Camera With Built-in Test Signal Generator, Test Pattern, Or Adjusting Adjunct Patents (Class 348/175)
  • Patent number: 10931908
    Abstract: A solid-state imaging device includes a first A/D converter circuit and a second A/D converter circuit per column. The first A/D converter circuit performs a first A/D conversion that (i) refines, using a first comparator, a range including a potential of an analog signal through a binary search, and (ii) generates, based on a result of the binary search, a first digital signal being a high-order portion of the digital signal. The second A/D converter circuit performs a second A/D conversion that generates a second digital signal being a low-order portion that is a remainder of the digital signal by measuring a time required for an output of the second comparator to be inverted, the second comparator comparing a quantitative relationship between the analog signal refined and a ramp signal.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 23, 2021
    Inventors: Yutaka Abe, Kazuko Nishimura, Hiroshi Fujinaka, Norihiko Sumitani, Yosuke Higashi
  • Patent number: 10873683
    Abstract: In one example embodiment, a camera system includes a plurality of cameras, a camera controller configured to control the plurality of cameras, a control signal line configured to facilitate an exchange of at least one control signal between the camera controller and the plurality of cameras and a synchronization signal line commonly connected to the plurality of cameras, and configured to transmit at least one transmission synchronization signal for synchronizing at least two cameras among the plurality of cameras.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: December 22, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il Joong Kim, Jeong A Jo
  • Patent number: 10831190
    Abstract: A system, method, and processor-readable medium for assessing the reliability of vehicle systems used in an autonomous vehicle. The assessment may be performed at least in part on the basis of data collected by one or more of the vehicle's sensors. The result of the assessment may be used as the basis for decisions about vehicle operation carried out by an autonomous driving module.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: November 10, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Elmira Amirloo Abolfathi
  • Patent number: 10811399
    Abstract: An optical sensing chip packaging structure includes a substrate, an optical sensing member, a light emitting member and a transparent cover plate. The substrate has a recess; the optical sensing member is positioned in the recess, and is electrically connected to the substrate. The light emitting member is positioned in the recess, and is electrically connected to the substrate or the optical sensing member. The transparent cover plate is positioned on the substrate, and covers the optical sensing member and the light emitting member.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 20, 2020
    Inventor: Cherng-Chiao Wu
  • Patent number: 10735643
    Abstract: Media user interfaces are described, including user interfaces for capturing media (e.g., capturing a photo, recording a video), displaying media (e.g., displaying a photo, playing a video), editing media (e.g., modifying a photo, modifying a video), accessing media controls or settings (e.g., accessing controls or settings to capture photos or videos to capture videos), and automatically adjusting media (e.g., automatically modifying a photo, automatically modifying a video).
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: August 4, 2020
    Assignee: Apple Inc.
    Inventors: Behkish J. Manzari, Alok Deshpande, Alan C. Dye, Craig M. Federighi, Paul Hubel, Nicholas Lupinetti, Jonathan McCormack, Grant Paul, William A. Sorrentino, III, Andre Souza Dos Santos
  • Patent number: 10712920
    Abstract: Methods for providing in-browser perspective manipulation are provided. In one aspect, a method includes executing, in a web browser, an image editing application retrieved from a remote server. The method also includes providing for display, in a user interface of the image editing application, a background and an image. The method also includes modifying anchors of the image in response to user input. The method also includes determining an indicator for supporting hardware graphics acceleration in the web browser. When the indicator is true, the method includes calling a 3D perspective transformation function on the image based on the modified anchors. When the indicator is false, the method includes a 2D approximation that divides the image into smaller units for affine transformations, which are then recombined into the transformed image. The method also includes compositing an output image comprising the transformed image in front of the background.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: July 14, 2020
    Assignee: Shutterstock, Inc.
    Inventors: Roger Beaman, Andrea Bogazzi
  • Patent number: 10565466
    Abstract: An image processing apparatus according to an embodiment includes an arranger, an image processor, an evaluation value calculator, and an abnormality detector. The arranger arranges a test data sequence in a blanking period of video data including an image data region in which image data is arranged and the blanking period in which the image data is not arranged. The image processor applies image processing to the test data sequence arranged in the video data and the image data. The evaluation value calculator calculates an evaluation value based on an image processing result of the test data sequence in the video data. The abnormality detector outputs a signal indicating an abnormality when the evaluation value does not fluctuate according to the predetermined order.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: February 18, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshiharu Uetani
  • Patent number: 10547819
    Abstract: A method and system for visualizing micro-contrast. At least one processor obtains a selected root image from a digital video, generates an assistive image, and blends the assistive image with the selected root image to obtain a mutated image, which configured to be displayed by a display device. The selected root image includes root pixels each associated with color values. The assistive image is generated based on a plurality of micro-contrast scores comprising a micro-contrast score calculated for each of at least a portion of the root pixels. The micro-contrast score is calculated for a selected one of the root pixels by identifying a submatrix centered at the selected root pixel, and calculating the micro-contrast score for the selected root pixel based on the color values associated with only sample pixels positioned one each at corners of the submatrix.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: January 28, 2020
    Assignee: FILMIC INC.
    Inventors: Christopher Cohen, Matthew Voss
  • Patent number: 10373341
    Abstract: Systems, methods, and non-transitory computer-readable media can identify an object depicted in an image. True color information associated with the object is obtained from a true color database comprising true color information for a plurality of objects. A color delta associated with the object is determined based on the true color information and captured color information associated with the object. The image is modified based on the color delta.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 6, 2019
    Assignee: Facebook, Inc.
    Inventor: Ittai M. Golde
  • Patent number: 10358086
    Abstract: An onboard periphery image display device for adjusting transformation rule of each camera mounted on an automobile is provided. A predetermined calibration pattern of a calibration member is placed in a capture area of a reference camera and another calibration pattern of the calibration member is placed in a capture area of an adjustment-targeted camera. The onboard periphery image display detects a coordinate of an image of a reference calibration pattern based on the image of the predetermined calibration pattern captured by the reference camera, detects an coordinate of an image of an adjustment calibration pattern based on the image of the another calibration pattern captured by the adjustment-targeted camera, and adjusts the transformation rule determined for the adjustment-targeted camera based on the detected coordinates.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: July 23, 2019
    Inventors: Hitoshi Tanaka, Muneaki Matsumoto
  • Patent number: 10298780
    Abstract: A digital image is captured. The captured digital image includes a calibration pattern. The calibration pattern includes displayed information about the calibration pattern. The displayed information is read to obtain calibration information about the captured digital image.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: May 21, 2019
    Assignee: Pixameter Corp.
    Inventor: Mansoor Ghazizadeh
  • Patent number: 10110877
    Abstract: A system for determining a loss of calibration in a multi-view stereo imaging system including executing instructions, via a processor, for a multi-view stereo imaging system to process a plural image frame recorded from a plurality of digital cameras of an information handling system and based on plural image calibration parameters and detecting a physical impact event, via a physical sensor, to an information handling system. The system and method execute instructions for a physical impact event detection system to determine, based on physical sensor feedback data, whether a threshold level of a physical impact event has been reached so as to affect calibration of the multi-view stereo imaging system. The detected physical impact event may be a mechanical impact event, a thermal impact event, a vibration mechanical impact event, or another physical impact event.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: October 23, 2018
    Assignee: Dell Products, LP
    Inventors: Timothy C. Shaw, Christopher A. Torres, Deeder M. Aurongzeb, Roman Joel Pacheco, Maxwell Andrews
  • Patent number: 10021322
    Abstract: In semiconductor devices according to related art, it is impossible to sufficiently evaluate column ADC interference. According to one embodiment, a semiconductor device includes a plurality of analog/digital conversion circuits that are arranged in a column direction of a pixel array and convert a pixel output signal output from the pixel array for each row into a digital value, and a conversion signal selection circuit that selects one of the pixel output signal and a test signal having a test voltage for each analog/digital conversion circuit according to a test pattern and outputs the selected signal.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 10, 2018
    Assignee: Renesas Electronics Corporation
    Inventor: Shunsuke Kizuna
  • Patent number: 9858511
    Abstract: A printing device includes: a set unit on which a print medium can be set; a projection unit (projector) capable of projecting a first image onto the print medium set on the set unit; a printing unit capable of printing a second image on the print medium set on the set unit; and a control unit configured to modify a printing specification of the second image to be formed on the print medium based on modification information regarding a modification made to a projection specification of the first image projected onto the print medium by the projection unit.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 2, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Norihiro Yamashita, Sumito Anzai
  • Patent number: 9830732
    Abstract: A system and a method for image alignment between at least two images to a three-dimensional model. The method including: determining a lower bound and an upper bound of an acceptable likelihood of mismatch between the at least two images; evaluating the likelihood of mismatch between the at least two images over a set of poses (r), shifts (t), or both poses (r) and shifts (t); and discarding those evaluations resulting beyond the lower bound and upper bound.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: November 28, 2017
    Inventors: Ali Punjani, Marcus Anthony Brubaker, David James Fleet
  • Patent number: 9749621
    Abstract: A calibration plate and a method for calibrating image capturing devices are provided. The calibration plate includes: a plate having a front face and a rear face; a plurality of calibration patterns formed at the front face of the plate, arranged in a regular manner, and used to calibrate image distortions, lens aberrations, and image center positions for the image capturing devices; and a plurality of graphically encoded patterns formed at the front face of the plate, the graphically encoded patterns being different from each other, and the graphically encoded patterns having information providing the positions of the calibration patterns.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: August 29, 2017
    Inventors: Shi-Wei Lin, Chih-Chin Wen, Kuo-Kai Hung, Chia-Chu Huang, Hao-Jhen Chang
  • Patent number: 9600861
    Abstract: A super-resolution method for generating a high-resolution (HR) image from a low-resolution (LR) blurred image is provided. The method is based on a transform-invariant directional total variation (TI-DTV) approach with Schattenp=1/2 (S1/2-norm) and L1/2-norm penalties. The S1/2-norm and the L1/2-norm are used to induce a lower-rank component and a sparse component of the LR blurred image so as to determine an affine transform to be adopted in the TI-DTV approach. In particular, the affine transform is determined such that a weighted sum of the S1/2-norm and the L1/2-norm is substantially minimized. Based on the alternating direction method of multipliers (ADMM), an iterative algorithm is developed to determine the affine transform. The determined affine transform is used to transform a candidate HR image to a transformed image used in computing a directional total variation (DTV), which is involved in determining the HR image.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: March 21, 2017
    Assignee: Macau University of Science and Technology
    Inventors: Yong Liang, Zong Ben Xu, Liang-Yong Xia, Xiao-Ying Liu
  • Patent number: 9390646
    Abstract: A color calibration apparatus includes an image obtaining unit configured to obtain first and second photographed images which are generated by photographing first and second mono-color test images displayed on the display device; a controller configured to detect an ambient light area on which an ambient light is shining within the first photographed image based on pixel values of the first photographed image, and further configured to determine a remaining area of the first photographed image other than the ambient light area as a representative value calculating area; and an image processor configured to calculate a representative value based on pixel values of an area corresponding to the representative value calculating area within the second photographed image, and further configured to perform color calibration of the display device based on the representative value.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: July 12, 2016
    Inventors: Ji-yong Park, Nam-kyun Beon, Sang-kyun Im, Young-hoon Cho, Hye-rin Choi
  • Patent number: 9366839
    Abstract: To make it possible to adjust a relative positional relationship between an imaging lens and an image pickup device highly precisely within a short period of time, a position adjusting device includes: an image pickup device rotating and holding section (101) for holding an image pickup device (202) at any one of three or more rotational angles; a relationship information obtaining section (103) for obtaining, for each of respective images captured at the rotational angles, information on a relationship between the corresponding rotational angle and a contrast of the image at a plurality of points or regions in the image; a line approximation section (104) for approximating the relationship with use of an approximation line; and an image pickup device adjusting section (105) for rotating the image pickup device (202) so that the image pickup device (202) is held at a rotational angle corresponding to a position at which a plurality of the approximation lines cross each other.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 14, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Norimichi Shigemitsu, Hiroyuki Hanato
  • Patent number: 9036030
    Abstract: Method comprising the steps of: choosing a set of calibration colors within said scene, measuring each calibration color of said set such as to get a set of XYZ to represent each calibration color in the given colorimetric color space, by using said image capture device, capturing calibration colors such as to get a set of Raw RGB values to represent each calibration color, estimating a parametric color transform such that any set of Raw RGB values corresponding to a calibration color is transformed into a set of XYZ values corresponding to the same calibration color, building a color calibration transform by the concatenation of the parametric color transform with an output color transform.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: May 19, 2015
    Inventors: Jurgen Stauder, Patrick Morvan, Corinne Poree
  • Patent number: 9025033
    Abstract: A surveillance camera is positioned and positionable at a stationary surveillance position for monitoring. The surveillance camera has a calibration tool that is constructed or configured for ascertaining the stationary surveillance position of the surveillance camera.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: May 5, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Niem, Wolfgang Niehsen, Hartmut Loos
  • Publication number: 20150109458
    Abstract: A method of registering a camera of a surgical navigation system for an augmented reality which realizes an augmented reality with lowered error range is disclosed. The method of registering the camera of the surgical navigation system for the augmented reality enables single person to do the work by calculating and adjusting the coordinate of the optical center of the camera by moving the optical tracker, the camera, or the pattern board with a second marker attached on the pattern board, not manually attached on the pattern board. And, there is an effect of improving accuracy and safety of a surgery by realizing an augmented reality without generating an accumulated error by the second marker, since the spatial coordinate of the second marker attached on the pattern board maintains uniform.
    Type: Application
    Filed: May 27, 2013
    Publication date: April 23, 2015
    Inventor: Hyun-Ki Lee
  • Publication number: 20150097968
    Abstract: Various examples related to calibration of a scanning device are disclosed. In one example, among others, a calibration cradle includes a calibration pattern positioned within the calibration cradle and recesses to support a scanning device in a fixed position relative to the calibration pattern. In another example, a method includes positioning a scanning device in a calibration cradle, obtaining an image of a calibration pattern with a tracking sensor of the scanning device, determining an estimated pose of the scanning device, and determining an error associated with the calibration pattern using the estimated pose. In another example, a method includes capturing an image of a cone mirror a probe of a scanning device, determining a centroid of the cone mirror image, and determining an error associated with the cone mirror using the centroid.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Inventors: Harris Bergman, Giorgos Hatzilias, Karol Hatzilias, Ruizhi Hong, Jon Jowers, Wess Eric Sharpe
  • Patent number: 9001214
    Abstract: A method, system and reference target for estimating spectral data on a selected one of three spectral information types is disclosed. Spectral information types comprise illumination of a scene, spectral sensitivity of an imager imaging the scene and reflectance of a surface in the scene. The method comprises obtaining a ranking order for plural sensor responses produced by the imager, each sensor responses being produced from a reference target in the scene, obtaining, from an alternate source, data on the other two spectral information types, determining a set of constraints, the set including, for each sequential pair combination of sensor responses when taken in said ranking order, a constraint determined in dependence on the ranking and on the other two spectral information types for the respective sensor responses and, in dependence on the ranking order and on the set of constraints, determining said spectral data that optimally satisfies said constraints.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 7, 2015
    Assignee: University of East Anglia
    Inventor: Graham Finlayson
  • Publication number: 20150085140
    Abstract: An imaging apparatus includes an imaging unit that is provided with an image pickup device and a fixed pattern outputting section that outputs a fixed pattern set in advance and includes a control unit and a path. The control unit is electrically connected to the imaging unit and receives an image acquired by the image pickup device and a fixed pattern outputted from the fixed pattern outputting means. The path electrically connects the imaging unit and the control unit, and electrically transmits an image and a fixed pattern from the imaging unit to the control unit. The control unit controls, depending on the image, an application which requires the image as one of inputs to the application. Further, the control unit compares a specific pattern prepared in advance according to the fixed pattern, with the fixed pattern, to determine the occurrence of an anomaly in the electrical connection of the path.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 26, 2015
    Inventor: Nobuhisa Shimizu
  • Publication number: 20150077570
    Abstract: It is disclosed that, as an embodiment, a test circuit includes a test signal supply unit configured to supply a test signal via a signal line to signal receiving units provided in a plurality of columns, wherein the test signal supply unit is a voltage buffer or a current buffer, and the test circuit has a plurality of test signal supply units and a plurality of signal lines, and wherein at least one test signal supply unit is electrically connected to one signal line different from a signal line to which another test signal supply unit is electrically connected.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventors: Akira Okita, Masaaki Iwane, Yu Arishima, Masaaki Minowa
  • Patent number: 8976251
    Abstract: Methods and systems for analyzing camera lenses and presenting information regarding camera lenses performance are described. An interactive user interface is provided over a network for display on a user terminal by a computer system. A user request is received at the computer system from the user terminal for lens data from a first lens. Lens data, including test data obtained via a first digital image captured using the first lens at the first focal length setting and the first aperture setting is accessed from memory and transmitted to interactive user interface. The interactive user interface is configured to display an identification of the first camera body, an identification of the first lens, the first focal length setting used to capture the image, and the first aperture setting used to capture the image. Using the lens test data, the interactive user interface generates and displays sharpness graph data.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: March 10, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Philip Askey, Andrew C G Westlake, Jaysen B. Marais, Simon Ashley Joinson
  • Publication number: 20150062349
    Abstract: A computer-implemented method for color correcting images captured using a mobile computing device is described. A wavelength of light is emitted from a display of a mobile computing device. An image of the emitted wavelength of light is captured using a camera on the mobile computing device. The image of the wavelength of light emitted from the display of the mobile computing device that is captured using the camera on the mobile computing device is analyzed. At least one image captured using the camera on the mobile computing device is modified based on the analysis of the image of the wavelength of light emitted from the display of the mobile computing device.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: 1-800 Contacts, Inc.
    Inventor: Jonathan Coon
  • Patent number: 8953047
    Abstract: An imaging system may include an array of image pixels and verification circuitry. The verification circuitry may inject a test voltage into the pixel signal chain of a test pixel. The test voltage may be output on a column line associated with the column of pixels in which the test pixel is located. The test signal may be provided to a column ADC circuit for conversion from an analog test signal to a digital test signal. Verification circuitry may compare the digital output test signal with a predetermined reference signal to determine whether the imaging system is functioning properly (e.g., to determine whether column ADC circuits or other circuit elements in the pixel signal chain are functioning properly). If the output test signals do not match the expected output signals, the imaging system may be disabled and/or a warning signal may be presented to a user of the system.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 10, 2015
    Assignee: Aptina Imaging Corporation
    Inventor: Tore Martinussen
  • Patent number: 8947537
    Abstract: An example system for testing camera modules may include: a polygonal structure that is rotatable, where the polygonal structure includes faces, each of which is configured to receive at least one camera module under test; and targets facing at least some of the faces of the polygonal structure, where each target is usable in testing a corresponding camera module facing the each target.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: February 3, 2015
    Assignee: Teradyne, Inc.
    Inventors: David Walter Lewinnek, Richard Pye
  • Publication number: 20150009338
    Abstract: Various corporate, industry, and regulatory guidelines, best practices and standards are used in establishing acceptable levels of accuracy for volume dimensioning systems used in commerce. A volume dimensioning system can determine at least one distortion value that is indicative of an amount of distortion present in the system and responsive to the amount of distortion, autonomously after or adjust the units of accuracy of information reported by the system. Such alteration or adjustment of units of accuracy may be performed based on an assessment of the distortion relative to a number of distortion thresholds. Responsive to the assessment, the volume dimensioning system can adjust a unit of accuracy in a representation of volume dimensioning related information.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 8, 2015
    Inventors: Franck Laffargue, Serge Thuries, H. Sprague Ackley
  • Patent number: 8917324
    Abstract: In an image capturing and processing system, a device and method is provided. The lens is made of simple lens with high diffractive materials and known strong color aberrations. The method includes the steps of: calibrating or measuring a Point Spread Function (PSF) for each color components at a set of distances, capturing image data, and calculating the image obtained using a de-convolution method based on the PSF found.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 23, 2014
    Inventor: Jennifer Jinghan Yu
  • Patent number: 8913128
    Abstract: The present invention discloses an image-based barrier detection and warning system and a method thereof, wherein an image processing technology is used to establish ROI and verify whether a horizontal line signal exists, and wherein the image processing technology determines whether an object is a barrier via detecting contours of an object and detecting distance to the object, and wherein the system timely outputs warning signals and presents distance to a barrier when detecting the barrier. The image-based barrier detection and warning system enables the driver to watch the surroundings of the vehicle directly and clearly and learn the relative positions of barriers, whereby the driver can park more easily and safely.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: December 16, 2014
    Assignee: Automotive Research & Test Center
    Inventors: Yu-Hsiang Wu, Chia-Tseng Chen, Ming-Feng Hsieh, Yi-Feng Su
  • Patent number: 8908046
    Abstract: There is provided a method for determining the reliability of a fault detection of a camera in a camera system. According to the method data relating to environmental conditions are received (204) and compared to accessed (202) criteria relating to environmental conditions external to the camera and affecting the reliability of the fault detection test. If the received data complies with the criteria it is determined (206) that the fault detection test gives a reliable result. This is advantageous in that false fault detection tests may be identified.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: December 9, 2014
    Assignee: Axis AB
    Inventors: Anders Johannesson, Stefan Lundberg, Wilfried Rakow
  • Publication number: 20140354826
    Abstract: Devices and methods for determining image quality using full-reference and non-reference techniques. Full reference image quality may be determined prior to output of an image or video frame from an image sensor processor by temporarily retaining image data from the image sensor and comparing processed image data of the image to the retained, non-processed image data of the same image. Full reference image quality determination may be assisted by a heuristic-based fault indicator. Image quality may also be determined by a non-reference technique of matching the image to one of various scenarios that are associated with sets of heuristics and applying the heuristics of the particular scenario to the image. Instead of relying on a nominal frame rate, video timing quality may be determined by comparing the capture time interval between successive video frames to the presentation time interval of the same video frames.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Applicant: Apple Inc.
    Inventors: Krasimir D . Kolarov, Steven E. Saunders
  • Publication number: 20140347496
    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: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Johannes Solhusvik, Tore Martinussen
  • Publication number: 20140340526
    Abstract: An imaging apparatus includes an imaging unit having a predetermined pixel array, and a generation unit configured to generate a test video signal for evaluating consistency between a video signal generated by performing predetermined processing on a video signal output from the imaging unit, and the video signal output from the imaging unit. In the test video signal, a signal value of each pixel is set so as to exhaustively cover signal values within a predetermined range in a direction in a video image of the test video signal. The test video signal has a repetition pattern in the direction in the video image of the test video signal. A signal deviating from regularity of the repetition pattern is inserted at a predetermined position in the repetition pattern. The spatially or temporally adjacent repetition patterns have different phases from each other.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 20, 2014
    Inventor: Hiroya Miura
  • Publication number: 20140340525
    Abstract: There is provided a method for determining the reliability of a fault detection of a camera in a camera system. According to the method data relating to environmental conditions are received (204) and compared to accessed (202) criteria relating to environmental conditions external to the camera and affecting the reliability of the fault detection test. If the received data complies with the criteria it is determined (206) that the fault detection test gives a reliable result. This is advantageous in that false fault detection tests may be identified.
    Type: Application
    Filed: April 9, 2014
    Publication date: November 20, 2014
    Applicant: Axis AB
    Inventors: Anders Johannesson, Stefan Lundberg, Wilfried Rakow
  • Patent number: 8885049
    Abstract: A method of determining calibration parameters of a camera comprises taking a first image of an object, taking a second image of the object, wherein the position of the camera with respect to the object is changed between the first and the second image, the calibration parameters of the camera being fixed between the first and the second image, determining a transformation that is adapted to transform a portion of the first into a corresponding portion of the second image, and determining the calibration parameters from the transformation.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventor: Michael Miksch
  • Patent number: 8872923
    Abstract: The present disclosure relates to color calibration chart acquisition. In an example, a video acquired by an imaging device may be processed. The video may be analyzed to automatically detect a reproduction of a color calibration chart. Upon detection of a reproduction of the color calibration chart, it may be determined whether color calibration chart reproduction quality is within a selected quality threshold. Upon determining that color calibration chart reproduction quality is not within a selected threshold, user feedback may be provided, via the imaging device, to dynamically guide the user to make adjustments in the video acquisition in order to obtain a color calibration chart reproduction within the selected quality threshold.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: October 28, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Melanie M. Gottwals, Ehud Chatow, Nathan Moroney
  • Patent number: 8872925
    Abstract: Techniques pertaining to methods and devices for calibrating camera parameters are disclosed. According to one aspect of the present invention, objects on an image are detected and features on the objects, such as the top of a person, are identified. Perspective parallel lines based on the object features are constructed and vanishing points from the converged perspective parallel lines are determined. A vanishing line is defined according to the vanishing points. The intrinsic parameters, such as focal length, and the extrinsic parameters, such as tilting and pan angles, of a camera are calibrated according to the vanishing points, the vanishing line and a reference object with known dimensions, or known camera angles, The calibrated camera parameters are used for accurate photogrammetric measurements and computer vision applications.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: October 28, 2014
    Assignee: Vimcro Corporation
    Inventors: Donghai Xie, Lei Wang
  • Patent number: 8866913
    Abstract: Systems and methods for calibrating a 360 degree camera system include imaging reference strips, analyzing the imaged data to correct for pitch, roll, and yaw of cameras of the 360 degree camera system, and analyzing the image data to correct for zoom and shifting of the cameras. Each of the reference strips may include a bullseye component and a dots component to aid in the analyzing and correcting.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: October 21, 2014
    Assignee: OmniVision Technologies, Inc.
    Inventors: Jeff Hsieh, Hasan Gadjali, Tawei Ho
  • Publication number: 20140307102
    Abstract: A projection device and an automatic projection calibration method thereof are disclosed. When the projection device boots up, an image pattern corresponding to a display data is projected through a projecting unit. The image pattern is sensed through an image sensor to obtain information of the image pattern. The information of the image pattern is compared with information of a previous image pattern through a processing unit to determine whether to execute an automatic calibration procedure. When the processing unit executes the automatic calibration procedure, a calibration pattern is projected through the projecting unit. The calibration pattern is sensed through the image sensor to obtain information of the calibration pattern. A calibration driving procedure is executed through the processing unit to convert imaging coordinates of the calibration pattern sensed through the image sensor into projecting coordinates of the projection device, so as to establish a coordinate conversion table.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 16, 2014
    Applicant: Coretronic Corporation
    Inventors: Kun-Rong Chang, Wen-Wei Tsai
  • Publication number: 20140293065
    Abstract: A camera includes a photo-sensitive element and a controller. The controller is electrically connected to the photo-sensitive element. The photo-sensitive element is configured to capture an image of an object. The controller is configured to convert a color level value of each of pixels of the image into an image gray level value, and the controller is configured to generate an alarm message to display on a screen of the camera when one of the image gray level values is higher than a predetermined gray level threshold value.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 2, 2014
    Inventor: Wen-Lung HUANG
  • Patent number: 8810652
    Abstract: A method and device for monitoring a monitored area with at least one camera and in which the monitored area has a contrast strip with at least one bright partial strip and/or at least one dark partial strip that extend in the longitudinal direction. A control unit recognizes the obscuration of a minimum area of the bright partial strip and/or the dark partial strip as the entry of an object into the monitored area. The control unit detects from an image of the camera the obscuration in columns which are oriented transverse to the contrast strip. A violation of the signature of the contrast strip is recognized when a first minimum number of bright pixels between the bright beginning and the bright end of the bright partial strip and/or a second minimum number of dark pixels between the dark beginning and the dark end of the dark partial strip in the respective columns, and the obscuration of the minimum area as the obscuration of a predetermined number of side-by-side columns have been detected.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: August 19, 2014
    Assignee: Sick AG
    Inventors: Ingolf Braune, Bernd Rothenberger
  • Patent number: 8797411
    Abstract: A test apparatus comprising a combination of front illuminated and rear illuminated optical reference test elements designed to produce predetermined electronic signals. The front illuminated elements comprise spectrophotometrically neutral gray patches and primary and secondary color patches of predetermined hues. Additional color patches having the same hue as the primaries and secondaries, but at lower saturation levels, generate unique logical patterns on display devices well known to the broadcasting and image reproducing industries. The rear illuminated test elements comprise wide color gamut hues at levels of saturation not attainable in reflected light systems. Also disclosed is a method of evaluating and optimizing the image quality in high gamut imaging systems, using the above described apparatus.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: August 5, 2014
    Inventor: Ferrand David E Corley
  • Patent number: 8797410
    Abstract: There are provided an image pickup apparatus, an image pickup system, and a method for driving the image pickup apparatus which perform correction of a reference potential used in an operation performed by a successive approximation AD conversion circuit and correction of a digital signal, into which a pixel signal which is output by a pixel is converted.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 5, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yoshida
  • Patent number: 8786671
    Abstract: A driving recorder system and a coordinate positioning method thereof. The system comprises a curved image lens, an operation module, a processing module, a display module and a storage module. The curved image lens captures the curved image of the surrounding areas thereof. The operation module restores the curved image into a restored image. The processing module receives the restored image and adds time data to the restored image. The display module displays the restored image and the time data. The storage module stores the restored image and the time data.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: July 22, 2014
    Assignee: dadny, Inc.
    Inventors: Daniel Shih, Mao Hui Wu
  • Patent number: 8786679
    Abstract: A control part 210 sets up an exposure condition under which the bright part of the object is properly exposed and an exposure condition under which the dark part of the object is properly exposed. The control part 210 controls the first and second imaging part 110 and 120 to capture images with the set exposures, whereby a pair of images captured with different exposures is obtained. The control part 210 extracts corresponding points that are characteristic points corresponding between the image pairs. The control part 210 optimizes the extracted corresponding points based on the density of corresponding points between the images constituting an image pair captured with the same exposure and based on the pixel value of the corresponding points between the images captured with different exposures. The control part 210 creates 3D modeling data using the optimized corresponding points.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: July 22, 2014
    Assignee: Casio Computer Co., Ltd.
    Inventors: Mitsuyasu Nakajima, Yuki Yoshihama
  • Publication number: 20140198221
    Abstract: A three-dimensional coordinate position of a calibration device is determined. Further, a code is emitted to an image capture device. The code indicates the three-dimensional coordinate position of the calibration device. In addition, an image of light emitted from the calibration device is captured. The light includes the code. An image capture device three-dimensional coordinate position of the calibration device is calibrated according to the real world three-dimensional coordinate position of the calibration device indicated by the code.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Inventors: Paul Beardsley, Anselm Grundhoefer, Daniel Reetz