For Television Cameras (epo) Patents (Class 348/E17.002)
  • Patent number: 9875390
    Abstract: A method of recognizing an object includes controlling an event-based vision sensor to perform sampling in a first mode and to output first event signals based on the sampling in the first mode, determining whether object recognition is to be performed based on the first event signals, controlling the event-based vision sensor to perform sampling in a second mode and to output second event signals based on the sampling in the second mode in response to the determining indicating that the object recognition is to be performed, and performing the object recognition based on the second event signals.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: January 23, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoobin Lee, Keun Joo Park, Eric Hyunsurk Ryu, Jun Haeng Lee
  • Patent number: 8766808
    Abstract: An imager array may be provided as part of an imaging system. The imager array may include a plurality of sensor arrays (e.g., also referred to as lenslets or optical elements). Each sensor array may include a plurality of sensors (e.g., pixels) associated with a lens. The sensor arrays may be oriented, for example, substantially in a plane facing the same direction and configured to detect images from the same scene (e.g., target area). Such images may be processed in accordance with various techniques to provide images of electromagnetic radiation. The sensor arrays may include filters or lens coatings to selectively detect desired ranges of electromagnetic radiation. Such arrangements of sensor arrays in an imager array may be used to advantageous effect in a variety of different applications.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: July 1, 2014
    Assignee: FLIR Systems, Inc.
    Inventor: Nicholas Hogasten
  • Publication number: 20140125818
    Abstract: A method for calibrating a camera and a display monitor is provided. The method includes identifying a parameter for optimization, assigning to a test color a target color relevant to the parameter, repeatedly performing, two or more times, a set of steps, determining a direction and timing of color divergence for the target color from obtained images, and adjusting the parameter based on the direction and rate of color divergence for the target color. The set of steps includes instructing the display monitor to display the test color on a portion of the display monitor, obtaining an image captured by the camera while the display is executing the instruction, and reassigning, to the test color, a color obtained from a portion of the image in which the portion of the display monitor was captured. The obtained image includes the portion of the display monitor.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Applicant: CATERPILLAR INC.
    Inventor: Paul Russell Friend
  • Publication number: 20140104437
    Abstract: Disclosed are systems, apparatus, devices, method, computer program products, and other implementations, including a method that includes capturing an image of a scene by an image capturing unit of a device that includes at least one sensor, determining relative device orientation of the device based, at least in part, on determined location of at least one vanishing point in the captured image of the scene, and performing one or more calibration operations for the at least one sensor based, at least in part, on the determined relative device orientation.
    Type: Application
    Filed: November 7, 2012
    Publication date: April 17, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Hui CHAO, Sameera PODURI, Saumitra Mohan DAS, Ayman Fawzy NAGUIB, Faraz Mohammad MIRZAEI
  • Patent number: 8698901
    Abstract: An automatic calibration method for a projector-camera system including a semi-transparent screen is disclosed herein. An image sequence is caused to be captured from the semi-transparent screen and through the semi-transparent screen while a calibration pattern having features is displayed and not displayed in an alternating succession on the semi-transparent screen. A temporal correlation image is created from the image sequence and a discrete binary signal. Peaks are identified in a spatial cross correlation image generated from the temporal correlation image, where a pattern of the identified peaks corresponds to a pattern of the features in the calibration pattern. The peaks are transformed to coordinates of corrected feature points. A comparison of the corrected feature points and a ground truth set of coordinates for the features is used to determine whether the projector-camera system is calibrated.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: April 15, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Wei Hong
  • Publication number: 20140071281
    Abstract: A method for determining a response to misalignment of a camera monitoring a desired area includes acquiring temporal related frames from the camera including a reference frame. A pixel location is determined of a reference object from the frames. Using the pixel location of the reference object, a displacement of the camera between a current frame and the reference frame is determined. For the displacement exceeding a first threshold, a new displacement of the camera is measured by introducing at least one additional object to a camera field of view and comparing the new displacement to a second threshold. For the new displacement not exceeding the second threshold, the camera is recalibrated using a determined pixel location and a physical location of the at least one additional object. For the new displacement exceeding the second threshold, notification is provided of a misalignment to an associated user device.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Applicant: XEROX CORPORATION
    Inventors: Wencheng Wu, Edul N. Dalal
  • Publication number: 20140063265
    Abstract: An electronic device may include a camera module. Control circuitry within the electronic device may use an image sensor within the camera module to acquire digital images. The camera module may have lens structures that are supported by lens support structures such as a lens barrel and lens carrier. An actuator such as a voice coil motor may control the position of the lens support structures relative to internal support structures such as upper and lower spacer members. Springs may be used to couple the lens support structures to the internal support structures. Outer wall structures in the camera module such as a ferromagnetic shield structures may surround and enclose at least some of the internal support structures. The outer wall structures may have openings. The internal support structures may have pins or other alignment structures that protrude through the openings.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 6, 2014
    Inventors: Ashutosh Y. Shukla, Kenta K. Williams, Shashikant G. Hegde, Tang Yew Tan, David A. Pakula
  • Publication number: 20140055591
    Abstract: Embodiments are disclosed that relate to calibrating an eye tracking system for a computing device. For example, one disclosed embodiment provides, in a computing device comprising a gaze estimation system, a method of calibrating the gaze estimation system. The method includes receiving a request to log a user onto the computing device, outputting a passcode entry display image to a display device, receiving image data from one or more eye tracking cameras, and from the image data, determining a gaze scanpath representing a path of a user's gaze on the passcode entry display image. The method further includes comparing the gaze scanpath to a stored scanpath for the user, and calibrating the gaze estimation system based upon a result of comparing the gaze scanpath to the stored scanpath for the user.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Inventor: Sagi Katz
  • Patent number: 8654873
    Abstract: In one embodiment, a Television (TV) receiver to perform a method of synchronizing a demodulator at a Viterbi decode input in the TV receiver using one or more bit de-interleaved even and odd Orthogonal Frequency Division Multiplexing (OFDM) symbols is provided. The method includes (i) performing a Viterbi decoding on the bit de-interleaved even and odd OFDM symbols when a frame boundary does not exist for the bit de-interleaved even and odd OFDM symbols, (ii) performing a convolutional encoding on an decoded data output of the Viterbi decoding, (iii) determining whether an output of the convolutional encoding of the bit de-interleaved OFDM symbols matches an input at a Viterbi decode, and (iv) determining whether the output of the convolutional encoding of the bit de-interleaved even and odd OFDM symbols matches with a SYNC pattern or a SYNC? pattern to obtain a RS packet align boundary.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 18, 2014
    Inventors: Gururaj Padaki, Sunil Hosur Rames, Rakesh A Joshi, Raghavendra Raichur, Rajendra Hegde
  • Publication number: 20140036095
    Abstract: A method and system for determining a camera-to-display latency of an electronic device (100) having a camera (134) and touch-sensitive display (108) are disclosed. In one example embodiment, the method (500) includes receiving (511) first light (136) at the camera, and essentially simultaneously receiving second light (138) at a first photosensitive structural portion (102, 602). The method (500) further includes detecting (512) a first simulated touch input at the display (108) in response to a first actuation of the first photosensitive structural portion (102, 602), receiving third light (140) at a second photosensitive structural portion (104, 604), the third light being generated based at least indirectly upon the received first light (136), detecting (514) a second simulated touch input at the display (108) as a result of the receiving of the third light (140), and determining the camera-to-display latency based at least indirectly upon the touch inputs (516).
    Type: Application
    Filed: August 1, 2012
    Publication date: February 6, 2014
    Applicant: Motorola Mobility LLC
    Inventors: John W. Kaehler, Alexander Klement, Mark F. Valentine, Sandeep Vuppu, Daniel H. Wagner
  • Publication number: 20140028819
    Abstract: An imaging section images a subject to generate an image. A display displays an image. A measuring section measures the size of the subject on the basis of the image. A recording section associates calibration data of a measuring endoscope apparatus including a value obtained when the measuring section measures the size of the calibrator on the basis of an image obtained when the imaging section has imaged the calibrator, and calibration data of the calibrator including a value obtained when the calibrator is measured by a higher-rank measuring instrument of a traceability system, and a value obtained when the measuring section measures the size of a measurement object different from the calibrator on the basis of an image of the measurement object, with the image of the measurement object image and records the associated data on a recording medium.
    Type: Application
    Filed: October 26, 2012
    Publication date: January 30, 2014
    Applicant: OLYMPUS CORPORATION
    Inventor: Sumito NAKANO
  • Publication number: 20140002661
    Abstract: A method for detecting camera degradation and faults comprises identifying a plurality of cameras comprising a camera network, collecting at least one system metric indicative of the camera's performance, analyzing the system metrics according to at least one of a plurality diagnostics layers comprising an individual diagnostic layer, a network diagnostic layer, and a pair diagnostic layer, and identifying a fault condition indicative of a faulty camera in the camera network according to the diagnostic layers.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: XEROX CORPORATION
    Inventors: Wencheng Wu, Edul N. Dalal
  • Publication number: 20130286219
    Abstract: An image calibration system and an image calibration method thereof. The image calibration system includes an image capture module capturing a calibration image, first and second calibration tools comprising first and second calibration graphs respectively and a processing module calculating first and second calibration templates in the calibration image based on the first and second calibration graphs, and comparing the calibration image and the first and second calibration templates so as to obtain at least one locating point.
    Type: Application
    Filed: June 8, 2012
    Publication date: October 31, 2013
    Applicant: ALTEK AUTOTRONICS CORP.
    Inventors: Ching-Sung Yeh, Chung-Fang Chien
  • Publication number: 20130278779
    Abstract: An automatic calibration method for a projector-camera system including a semi-transparent screen is disclosed herein. An image sequence is caused to be captured from the semi-transparent screen and through the semi-transparent screen while a calibration pattern having features is displayed and not displayed in an alternating succession on the semi-transparent screen. A temporal correlation image is created from the image sequence and a discrete binary signal. Peaks are identified in a spatial cross correlation image generated from the temporal correlation image, where a pattern of the identified peaks corresponds to a pattern of the features in the calibration pattern. The peaks are transformed to coordinates of corrected feature points. A comparison of the corrected feature points and a ground truth set of coordinates for the features is used to determine whether the projector-camera system is calibrated.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 24, 2013
    Inventor: Wei Hong
  • Publication number: 20130258044
    Abstract: A camera with multiple lenses and multiple sensors wherein each lens/sensor pair generates a sub-image of a final photograph or video. Different embodiments include: manufacturing all lenses as a single component; manufacturing all sensors as one piece of silicon; different lenses incorporate filters for different wavelengths, including IR and UV; non-circular lenses; different lenses are different focal lengths; different lenses focus at different distances; selection of sharpest sub-image; blurring of selected sub-images; different lens/sensor pairs have different exposures; selection of optimum exposure sub-images; identification of distinct objects based on distance; stereo imaging in more than one axis; and dynamic optical center-line calibration.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: ZETTA RESEARCH AND DEVELOPMENT LLC - FORC SERIES
    Inventor: Jonathan N. Betts-Lacroix
  • Publication number: 20130250127
    Abstract: A method for checking a camera includes the steps of capturing an image of an object using a photo-sensitive element, converting the color level value of each of a plurality of pixels of the image into image gray level values, and when one of the image gray level values is higher than a predetermined gray level threshold value, displaying an alarm message on the screen of the camera. A camera is also disclosed herein.
    Type: Application
    Filed: August 23, 2012
    Publication date: September 26, 2013
    Inventor: Wen-Lung Huang
  • Publication number: 20130235213
    Abstract: An accurate camera pose is determined by pairing a first camera with a second camera in proximity to one another, and by developing a known spatial relationship between them. An image from the first camera and an image from the second camera are analyzed to determine corresponding features in both images, and a relative homography is calculated from these corresponding features. A relative parameter, such as a focal length or an extrinsic parameter is used to calculate a first camera's parameter based on a second camera's parameter and the relative homography.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Inventors: Howard J. Kennedy, Smadar Gefen
  • Publication number: 20130222605
    Abstract: A camera module under test is signaled to capture an image of a target. A group of pixels of the image that represent portions of several objects in the target are low pass filtered and then analyzed to compute a pixel distance between different subgroups of pixels that represent portions of the different objects. The computed pixel distance is then converted into a true distance using a predetermined math relationship that relates a pixel distance variable with a true distance variable.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 29, 2013
    Applicant: Apple Inc.
    Inventor: Jason R. Rukes
  • Publication number: 20130208121
    Abstract: A method, system, and computer-usable tangible storage device for traffic camera diagnostics via strategic use of moving test targets are disclosed. The disclosed embodiments can comprise four modules: Moving test target management module, Moving test target detection and identification module, Image/video feature extraction module, and Sensor characterization and diagnostics module. A first test vehicle can travel periodically through traffic camera(s) of interest. The traffic camera(s) would then identify these test vehicles via matching of license plate numbers and then identify test targets in video frames through pattern matching or barcode reading. The identified test targets are then analyzed to extract image and video features that can be used for sensor characterization, sensor health assessment, and sensor diagnostics. The disclosed embodiments provide for a non-traffic-stop (i.e., non-traffic-interruption) traffic camera diagnostics.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Inventors: Wencheng Wu, Martin E. Hoover
  • Publication number: 20130182080
    Abstract: A method for testing a 3D camera is provided. The method includes: making a first camera of the 3D camera align with a first picture of a reference picture, wherein, the reference picture includes a second picture, a central point of the first picture and the second picture respectively has a first label and a second label; obtaining an image captured by a second camera of the 3D camera; identifying the first label, the second label, and a central point of the image; calculating an actual angle difference and an actual distance difference according to coordinates of the first label, the second label, and the central point; determining whether the 3D camera is installed appropriately by comparing the actual distance difference with the reference distance difference and the actual angle difference with the reference angle difference respectively.
    Type: Application
    Filed: March 27, 2012
    Publication date: July 18, 2013
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: YU-CHENG LIN, CHI-HSIANG PENG, CHIEH-WEN HSUEH
  • Publication number: 20130162813
    Abstract: A sensor event assessor trainer and integrator is disclosed. In one embodiment, a sensor event assessor assesses any event detected by at least two sensors and provides assessment information about the event. A different event detection system provides an input regarding an event. A collaborator combines the assessment information with the different event detection system input to generate a user recognizable output for presenting the integrated event information.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventor: Cory J. Stephanson
  • Publication number: 20130147968
    Abstract: A testing method includes: providing a camera under test and a planar light source having a first mark, wherein the camera includes a voice coil motor (VCM) and a lens module is fixed on the VCM by glue, the VCM moves the lens module, the VCM includes an elastic tab for limiting and restoring the movement of the lens module; taking an image of a light source using the camera during the movement of the VCM; displaying the image having the first mark; determining if the first mark tilts using a detector; displaying a first message indicating that the tab is not stuck by glue when the detector determines the first mark does not tilt; and displaying a second message indicating that the tab is stuck by glue when the detector determines the first mark tilts.
    Type: Application
    Filed: August 15, 2012
    Publication date: June 13, 2013
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: YUNG-FENG LIN
  • Publication number: 20130128040
    Abstract: A method is provided for determining a position where a reference point should be located on a display (24) of an alignment device (20). The reference point corresponds to a target located within a region to be monitored by a camera (10) being aligned with the alignment device (20). The method includes the steps of: determining a minimum Field of View (FoV) such that the camera (10) will view a substantial entirety of the region; determining a first bearing for the camera (10), the first bearing substantially bisecting the FoV; determining a second bearing to the target; determining a different between the first and second bearings; determining a scaling factor (A); and, determining a position where a reference point corresponding to the target should be located on the display (24) of the alignment device (20) based on the scaling factor (A) and the difference between the first and second bearings.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: ALCATEL-LUCENT USA INC.
    Inventors: Karl A. STOUGH, George P. WILKIN, Dean W. CRAIG
  • Publication number: 20130127999
    Abstract: According to one embodiment, an apparatus for calibrating a camera while a vehicle is moving includes a rearward monitoring camera mounted in a vehicle to acquire image information, a memory that stores a camera calibration program for computationally determining and calibrating mounting parameters of the camera while the vehicle is moving, using the image information acquired by the camera, a gear position detector to detect gear positions of the vehicle and generates position signals according to the gear positions and a control unit that receives the image information, and when the gear position detector detects a position signal for other than a reverse gear position, that reads out and executes the camera calibration program stored in the memory.
    Type: Application
    Filed: February 29, 2012
    Publication date: May 23, 2013
    Applicant: Toshiba Alpine Automotive Technology Corporation
    Inventor: Kiyoyuki KAWAI
  • Publication number: 20130107059
    Abstract: A noise detecting device includes an image acquiring unit and a parallel processing unit. The image acquiring unit acquires an image from a camera that captures the image of a test pattern including a plurality of lines tilted at a specific angle relative to a specific direction. The parallel processing unit sequentially extracts image signals for two lines extending in parallel in the specific direction of the image, the two parallel lines being away from each other by a specific number of lines, and performs in a parallel manner, for each image signals for the two parallel lines, processing for detecting noise generated in the image on the basis of a difference in pixel values calculated from the image signals for the two parallel lines.
    Type: Application
    Filed: October 23, 2012
    Publication date: May 2, 2013
    Applicant: SONY CORPORATION
    Inventor: Sony Corporation
  • Publication number: 20130083205
    Abstract: A test chart can be used to test sharpness performance of an imaging system's full image field by having a sharpness inspection area formed of a plurality of identical visual elements that abut each other leaving no gaps to thereby form a mosaic. Each visual element includes a plurality of groups of differently oriented contrasting lines. The mosaic may fill an entire image captured by an imager. Thus, a test system can image the chart to objectively assess the performance of the imaging system in terms of image quality (e.g. sharpness, tilt, etc) throughout the entire spatial area of the captured image. The size of the chart and spatial frequency spacing) of the visual element lines can be selected to test an imaging system's full field sharpness at selected spatial frequencies. The full field sharpness results more quickly and accurately determine different aspects of a given imaging system.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Inventors: Mark N. Gamadia, Fei Wu, Shizhe Shen, Jason Rukes
  • Publication number: 20130083168
    Abstract: There is provided a calibration apparatus for a camera module capable of calibrating the difference in optical characteristics between left and right images of a binocular camera module in real time by capturing images of a plurality of rotating test boards. The calibration apparatus of a camera module includes: a test unit including two or more mutually connected test boards, the test boards having images captured by a camera module and rotating at a pre-set angle; and a calibration unit receiving the images of the test boards captured by the camera module and calibrating optical characteristics thereof.
    Type: Application
    Filed: December 29, 2011
    Publication date: April 4, 2013
    Applicant: SAMSUNG ELCTRO-MECHANICS CO., LTD.
    Inventors: Joo Hyun KIM, Jagarlamudi Veera Venkata PRASAD, Nagaraj AVINASH, Soon Seok KANG
  • Publication number: 20130083204
    Abstract: An imager including a self test mode. The imager includes a pixel array for providing multiple pixel output signals via multiple columns; and a test switch for (a) receiving a test signal from a test generator and (b) disconnecting a pixel output signal from a column of the pixel array. The test switch provides the test signal to the column of the pixel array. The test signal includes a test voltage that replaces the pixel output signal. The test signal is digitized by an analog-to digital converter (ADC) and provided to a processor. The processor compares the digitized test signal to an expected pixel output signal. The processor also interpolates the output signal from a corresponding pixel using adjacent pixels, when the test switch disconnects the pixel output signal from the column of the pixel array.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: APTINA IMAGING CORPORATION
    Inventors: JOHANNES SOLHUSVIK, TORE MARTINUSSEN
  • Publication number: 20130076914
    Abstract: A method for assessing performance of an operator of an imaging system is provided. The method comprises acquiring operator identification information, and acquiring time taken by the operator for initializing the imaging system for an image acquisition, wherein initializing the imaging system comprises at least one activity, and wherein initializing the imaging system is accomplished before a subject to be imaged is exposed for imaging.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 28, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: GENERAL ELECTRIC COMPANY
  • Publication number: 20130070108
    Abstract: A method for determining calibration data for at least two cameras (camera1, camera2) in a multi view position, includes a step of determining respective parameters ((h100, . . . , h122), (h200, . . . , h222)) for identifying at least one respective homographic transformation on respective images (image1,image2) taken by said cameras of a same scene, by performing respective geometry analyses on said respective images (image1, image2), a step of performing at least one respective combined homographic transformation/feature detection step on said respective images thereby obtaining respective sets (feature set1, feature set2) of features on respective transformed images, such that said calibration data are obtained from matches (m1, . . . , mk) determined between said respective sets of features.
    Type: Application
    Filed: March 8, 2011
    Publication date: March 21, 2013
    Inventors: Maarten Aerts, Donny Tytgat, Jean-Francois Macq, Sammy Lievens
  • Publication number: 20130063607
    Abstract: A camera system that transfers static image data while reducing power consumption is provided. A static image application issues a frame transfer command at a certain transfer period to a camera module. In each transfer period, the camera module wakes up from a suspend state and generates static image data. After the end of the transfer, the camera module transitions to the suspend state. The camera module is able to transition to the suspend state at each transfer period and thus is able to reduce power consumption.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 14, 2013
    Applicant: LENOVO (SINGAPORE) PTE, LTD.
    Inventors: Susumu Shimotono, Jun Sugiyama, Hideki Kashiyama
  • Publication number: 20130057706
    Abstract: Methods, systems and software are disclosed for automated Measurement of Video Quality parameters. The system includes a static Test Pattern provided either in form of a Test Pattern File, converted via a standard playout device (test source) into analog or digital test signal and supplied to the input of a System Under Test, or in form of a Reflectance Chart installed before the front-end device of the System Under Test, such as TV camera. The system also includes a video capture device connected to the back-end device of the System Under Test, e.g. to the output of system decoder/player. A Video Quality Analyzer processes the captured video data and generates a detailed Analysis Report.
    Type: Application
    Filed: September 4, 2011
    Publication date: March 7, 2013
    Inventors: Victor Steinberg, Michael Shinsky
  • Publication number: 20130050505
    Abstract: Embodiments of a system and method for blur-calibration of an imaging sensor using a moving constellation are generally described herein. In some embodiments, blur-calibration of an imaging sensor includes moving a known target pattern across the field-of view (FOV) of the imaging sensor to present the target pattern across different frames at different pixel phases. Frames of images of the moving target pattern as seen in the FOV of the imaging sensor are captured to generate image data output. The image data output may be subsequently processed to generate data products representative of a shape of a point-spread function (PSF) from a high-resolution composite image generated from the captured frames. A chopper modulation may be applied to the moving target sequence and separate chopper-open and chopper-closed composite images are created. The PSF may be determined based on the difference between the chopper-open and chopper-closed composite images.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 28, 2013
    Applicant: Raytheon Company
    Inventor: Darin Williams
  • Publication number: 20130044222
    Abstract: Calculating a gain setting for a primary image sensor includes receiving a test-matrix of pixels from a test image sensor, and receiving a first-frame matrix of pixels from a primary image sensor. A gain setting is calculated for the primary image sensor using the first-frame matrix of pixels except those pixels imaging one or more exclusion regions identified from the test matrix of pixels.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: Microsoft Corporation
    Inventors: John Tardif, Seshagiri Panchapagesan
  • Publication number: 20130044223
    Abstract: A method for testing an image capturing device with quality parameters includes providing a predetermined criteria for the variations in images and quality parameters corresponding to a specific target-object, capturing a test image corresponding to the same target object by an image capturing device to be tested, and retrieving a standardized image and a test image located at the same position by a standard image unit and a test image unit, respectively, thereby comparing quality parameters of the standard image unit and the test image unit on the same position to accurately detect and determine any abnormity in the image capturing device.
    Type: Application
    Filed: November 9, 2011
    Publication date: February 21, 2013
    Applicants: ASKEY COMPUTER CORPORATION, ASKEY TECHNOLOGY (JIANGSU) LTD.
    Inventors: Yi-Ju Chen, Ching-Feng Hsieh
  • Publication number: 20130033608
    Abstract: A method for predicting whether a test image (318) is sharp or blurred includes the steps of: providing a sharpness classifier (316) that is trained to discriminate between sharp and blurred images; computing a set of sharpness features (322) for the test image (318) by (i) generating a high pass image (404) from the test image (318), (ii) generating a band pass image (406) from the test image (318), (iii) identifying textured regions (408) in the high pass image, (iv) identifying texture regions (410) in the band pass image, and (v) evaluating the identified textured regions in the high pass image and the band pass image to compute the set of test sharpness features (412); and evaluating the sharpness features using the sharpness classifier (324) to estimate if the test image (318) is sharp or blurry (20).
    Type: Application
    Filed: June 24, 2010
    Publication date: February 7, 2013
    Applicant: NIKON CORPORATION
    Inventor: Li Hong
  • Publication number: 20130027566
    Abstract: Imaging systems may be provided with image sensors having verification circuitry. Verification circuitry may be configured to continuously or occasionally verify that the image sensor is functioning properly. For example, verification circuitry may be configured to monitor levels of leakage current during standby mode. Verification circuitry may be coupled between a power supply and circuitry that is powered by that power supply. When the imaging system is in standby mode, circuitry associated with the imaging system such as pixel circuitry may draw a standby leakage current. Verification circuitry may be configured to measure the amount of standby leakage current drawn by associated imaging system circuitry. If the measured level of standby leakage current exceeds a maximum acceptable level of standby leakage current, a warning signal may be generated. Standby leakage current levels on multiple power supply lines may be monitored with associated verification circuitry.
    Type: Application
    Filed: February 17, 2012
    Publication date: January 31, 2013
    Inventors: Johannes Solhusvik, Steffen Skaug
  • Publication number: 20130027565
    Abstract: An imaging system may include an array of image pixels. The array of image pixels may be provided with one or more rows and columns of optically shielded dark image pixels. The dark image pixels may be used to produce verification image data that follows the same pixel-to-output data path of light-receiving pixels. The output signals from dark pixels may be continuously or intermittently compared with a set of expected output signals to verify that the imaging system is functioning properly. In some arrangements, verification image data may include a current frame number that is encoded into the dark pixels. The encoded current frame number may be compared with an expected current frame number. In other arrangements, dark pixels may be configured to have a predetermined pattern of conversion gain levels. The output signals may be compared with a “golden” image or other predetermined set of expected output signals.
    Type: Application
    Filed: February 17, 2012
    Publication date: January 31, 2013
    Inventors: Johannes Solhusvik, Neal Crook
  • Publication number: 20130016186
    Abstract: Described are methods and apparatus for adjusting images of a stereoscopic image pair based on keypoint matches. The quality of the key point matches is first evaluated to determine whether the quality exceeds a keypoint quality threshold. If the quality level of the keypoint matches exceeds the threshold, the vertical disparity between the images of the stereoscopic image pair can be evaluated based on vertical disparity vectors between the keypoint matches. If the vertical disparity is below a threshold, no adjustment of the stereoscopic image pair may be performed. If the vertical disparity is above the threshold, an affine correction may compensate for pitch, roll, and scale differences between the images. A projective correction may compensate for yaw differences. The vertical disparity between the two images is then evaluated after the corrections to determine if additional adjustment should be performed.
    Type: Application
    Filed: June 7, 2012
    Publication date: January 17, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Kalin Mitkov Atanassov, Sergiu R. Goma, Vikas Ramachandra
  • Publication number: 20130016222
    Abstract: This disclosure describes techniques for initially calibrating an image capture device. According to one aspect, the calibration includes calibrating parameters of an image filter for resolving the captured image. The method includes receiving a captured image of a test target and resolving the captured image using a set of initial parameters. A sharpness index of the resolved image is determined without matching the captured image to the test target. The sharpness index is used to minimize a cost function for determining parameters for use by the image capture device.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Xiaoyun Jiang, Eri Haneda
  • Publication number: 20130002826
    Abstract: Appropriate selection of calibration data by shortening process time without wasteful processing is provided. Before measuring a three dimensional point of a target object from a stereo image, the calibration data according to an in-focus position of taking optical systems are applied to the stereo image. To select the calibration data, an object distance is acquired according to parallax obtained from the stereo image being reduced. The object distance is an estimated focusing distance corresponding to the in-focus position. One of the calibration data assigned with a set distance region in which the estimated focusing distance is included is selected. Respective view images are reduced in a range in which it is possible to detect any one of the set distance regions determined for a respective reference focusing distance corresponding to the calibration data.
    Type: Application
    Filed: April 1, 2011
    Publication date: January 3, 2013
    Inventors: Eiji Ishiyama, Tomonori Masuda
  • Publication number: 20130002871
    Abstract: In order to determine extrinsic parameters of a vehicle vision system or an aspect of a vehicle vision system, road lane markings may be identified in an image captured by a camera and provided to the vehicle vision system. For one or more of the identified road lane markings, a first set of parameters defining an orientation and a position of a line along which a road lane marking extends in an image plane may be determined. Also, a second set of parameters defining an orientation and a position of a line along which a road lane marking extends in a road plane may be determined. A linear transformation that defines a mapping between the first set of parameters and the second set of parameters may be identified. The extrinsic parameters may be established based on the identified linear transformation.
    Type: Application
    Filed: June 19, 2012
    Publication date: January 3, 2013
    Applicant: Harman Becker Automotive Systems GmbH
    Inventors: Koba Natroshvili, Stefan Vacek
  • Publication number: 20120327251
    Abstract: One example discloses a method for calibrating an imager. A plurality of images of a target, each having an associated integration time, are captured at the imager. A representative digital count is determined for each of the plurality of images. Integration time is represented as a function of digital count from the respective digital counts and integration times associated with the plurality of images. A calibrated integration time is calculated from a target digital count.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 27, 2012
    Inventors: Peter Ivan Majewicz, Jennifer Lynn Melin, Kurt Bengtson
  • Publication number: 20120320190
    Abstract: A system for calibrating a vision system of an object. For example, a system for calibrating a surround view system of a vehicle. The system may be configured to capture, via a first and second image sensor, a first and second image of a plurality of objects. Upon capturing such information, the system may be configured to determine a position and orientation of the first and the second image sensor relative to the plurality of objects based on the first and the second captured image. Further, the system may be configured to determine a relative position and orientation between the first and the second image sensor based on a result of the determining a position and orientation of the first and the second image sensor. Also, the system may be configured to determine intrinsic and extrinsic parameters of the first and the second image sensor.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 20, 2012
    Applicant: Harman Becker Automotive Systems GmbH
    Inventors: Koba Natroshvili, Kay-Ulrich Scholl, Johannes Quast
  • Publication number: 20120320209
    Abstract: In a first aspect, the invention is directed to a vehicular camera and a method for calibrating the camera after it has been installed in a vehicle. In particular, the invention is directed to calibrating a vehicular camera after the camera has been installed in a vehicle, wherein the camera is of a type that applies an overlay to an image and outputs the image with the overlay to an in-vehicle display.
    Type: Application
    Filed: January 13, 2011
    Publication date: December 20, 2012
    Applicant: MAGNA ELECTRONICS INC.
    Inventors: Marko Vico, Sharon Zibman, Aleksandar Stefanovic
  • Publication number: 20120314086
    Abstract: Systems and methods for testing and calibrating camera modules based on a benchmark standard are provided. The systems can include a receptacle for receiving a camera module under test and a spectrometer. The test station can capture a test measurement using the camera module under test while contemporaneously capturing a true measurement using the spectrometer. Using the true measurement, the test station can predict how the benchmark standard would have performed in those conditions and compare that expected performance to the test measurement. Any differences can be stored in memory within the camera module under test for later retrieval to optimize image processing.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Applicant: APPLE INC.
    Inventors: Paul M. Hubel, Richard L. Baer
  • Publication number: 20120307077
    Abstract: An alignment apparatus for adjusting an image sensor is provided. The alignment apparatus includes a first stage, a second stage, a positioning aligned unit, and an adjustment unit. The second stage is floatingly disposed on the first stage. The image sensor is adapted to be disposed on the second stage. The positioning aligned unit connected between the first stage and the second stage constrains the second stage on a datum surface above the first stage. The positioning aligned unit coupled to the second stage drives the second stage to rotate along the datum surface.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 6, 2012
    Applicant: ALTEK CORPORATION
    Inventor: Ming-Tsung Hsin
  • Publication number: 20120293628
    Abstract: A camera installation position evaluating system includes a processor, the processor executing a process including setting a virtual plane orthogonal to the optic axis of a camera mounted on a camera mounted object, generating virtually a camera image to be captured by the camera, with use of data about a three-dimensional model of the camera mounted object, data about the virtual plane set by the setting and parameters of the camera, and computing a boundary between an area of the three-dimensional model of the camera mounted object and an area of the virtual plane set by the setting, on the camera image generated by the generating. Accordingly, the camera installation position evaluating system is able to quantitatively obtain the camera's view range at the present camera installation position based on the computed boundary.
    Type: Application
    Filed: July 31, 2012
    Publication date: November 22, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Masayoshi Hashima, Shinichi Sazawa, Hiroki Kobayashi
  • Publication number: 20120293667
    Abstract: Systems and methods for generating motion corrected tomographic images are provided. A method includes obtaining first images of a region of interest (ROI) to be imaged and associated with a first time, where the first images are associated with different positions and orientations with respect to the ROI. The method also includes defining an active region in the each of the first images and selecting intrinsic features in each of the first images based on the active region. Second, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of second images of the ROI associated with a second time prior to the first time and computing three-dimensional (3D) coordinates for the portion of the intrinsic features. Finally, the method includes computing a relative pose for the first images based on the 3D coordinates.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 22, 2012
    Applicant: UT-Battelle, LLC
    Inventors: Justin S. Baba, James Samuel Goddard, JR.
  • Publication number: 20120287232
    Abstract: A system for calibrating a surround view system of an object, such as a vehicle. The system may be implemented via calibration logic that may include software, hardware, firmware, or a combination thereof. The system may include positioning a set of markers on a plane at least partially surrounding the object. The plane may be in a field of view of a camera of the surround view system, and the camera may include a predetermined intrinsic calibration. The system may also include determining a first plurality of extrinsic parameters of the camera with respect to the set of markers. The system may repeat the positioning of the set of markers and the determination of the first plurality of extrinsic parameters for at least one other camera of the surround view system.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 15, 2012
    Applicant: Harman Becker Automotive Systems GmbH
    Inventors: Koba Natroshvili, Bernd Gassmann