Based On Image Signal Patents (Class 348/364)
  • Patent number: 8934031
    Abstract: A light intensity control device includes a fixed opening 261, an aperture stop part 26 for controlling a light flux of incident light, a light intensity aperture part 24 for changing the size of an opening by moving a plurality of aperture blades to limit a light intensity of transmitted light and a ND filter 25 having a transparent area 253 and a light blocking area 254, which is arranged to be movable between a first light blocking state where the transparent area 253 faces the fixed opening 261 of the aperture stop part 26 and a second light blocking state where the light blocking area 254 faces the fixed opening. The moving of the ND filter 25 is carried out when the opening area of the light intensity aperture part 24 is a maximum.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 13, 2015
    Assignee: JVC Kenwood Corporation
    Inventors: Fumio Nidaira, Yasufumi Nakaaki
  • Patent number: 8922678
    Abstract: The present invention discloses an electronic apparatus, an image capturing apparatus and a method thereof. The image capturing method comprises the following steps of: capturing a plurality of temporal images by an image capturing module, and setting one of the temporal images as a base image by a processing module; dividing each temporal image into a plurality of temporal image blocks, and dividing the base image into a plurality of base image blocks by the processing module; determining whether the difference between each temporal image block and the corresponding base image block is lower than a threshold value by the processing module; integrating the temporal image block and the corresponding base image block to generate a final image by the processing module when the difference between the temporal image block and the corresponding base image block is lower than the threshold value.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: December 30, 2014
    Assignee: Altek Corporation
    Inventors: Yun-Chin Li, Yu-Ming Cheng, Chin-Lung Yang
  • Patent number: 8922721
    Abstract: A display apparatus and a control method thereof are provided The display apparatus includes: an image processor configured to process an image of content; a display configured to display the processed image of the content; a camera configured to capture an image of a remote controller; a storage configured to store information regarding a plurality of appearance states of the remote controller corresponding to user commands; and a controller configured to determine an appearance state from among the plurality of appearance states of the remote controller based on the image of remote controller captured by the camera, and control the display section to display the image of the content according to a user command corresponding to the determined appearance state of the remote controller.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Do-sung Jung, Nam-hyun Park, Hae-sung Park, Ri-na Shin, Hyung-ho Hwangbo
  • Publication number: 20140375815
    Abstract: An exposure level determination unit (33) determines, for a region of interest in an original image captured by a camera (2) using a first exposure level in a control cycle at a predetermined time point, a second exposure level which is an exposure level for the next control cycle, by calculating a transparent pixel saturation rate which is a ratio of transparent pixels having a saturated gradation value among transparent pixels in the region of interest, and changing the first exposure level according to the transparent pixel saturation rate.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 25, 2014
    Inventors: Tadahiko Kanou, Masahiko Adachi
  • Patent number: 8913153
    Abstract: Electronic devices may include image sensors. Image sensors may be used to capture images having rows of long-exposure image pixel values that are interleaved with rows of short-exposure image pixel values. The long-exposure and short-exposure values in each interleaved image frame may be interpolated to form interpolated values. A combined long-exposure image and a combined short-exposure image may be generated using the long-exposure and the short-exposure values from the interleaved image frames and the interpolated values from a selected one of the interleaved image frames. The combined long-exposure and short-exposure images may each include image pixel values from either of the interleaved image frames in a non-motion edge region and image pixel values based only on the image pixel values or the interpolated values from the selected one of the interleaved images in a motion or non-edge region. High-dynamic-range images may be generated using the combined long-exposure and short-exposure images.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 16, 2014
    Assignee: Aptina Imaging Corporation
    Inventors: Huai Dong Li, Peng Lin
  • Patent number: 8908061
    Abstract: Receiving an instruction from a user to start sensing a still image, an image sensing apparatus performs scene determination based on an evaluation value of scene determination from an image sensed immediately after the luminance of the image converges to a predetermined range of a target luminance. The image sensing apparatus can accurately determine a scene of the image even the image sensor with a narrow dynamic range.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: December 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akira Kubota
  • Patent number: 8896742
    Abstract: An image pickup apparatus is arranged to perform live view to display enlarged image by deciding a Tv value, an Av value, and an ISO value based on a program diagram for deciding an exposure amount from brightness of an object, when a change instruction of an AF adjustment value used for a live view is provided, while when an operation to start the live view is provided and the change instruction of the AF adjustment value used for the live view is not provided, the apparatus performs live view by deciding the Tv value, Av value, and ISO value based on the program diagram if a photographing mode is not a manual mode, but performs the live view by using the Tv value, Av value, and ISO value set by the user, if the photographing mode is the manual mode.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: November 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuki Fukushima
  • Patent number: 8885093
    Abstract: An image pickup apparatus includes: an image pickup unit configured to generate a long-exposure image signal and a short-exposure image signal from incident light and output the generated signals as image pickup signals, the long-exposure image signal being generated by exposure for a relatively long period and the short-exposure image signal being generated by exposure for a relatively short period; a signal processing unit configured to generate a combined image signal by combining the long-exposure image signal and the short-exposure image signal, the combined image signal having a dynamic range that is relatively wider than that of at least any one of the long-exposure image signal and the short-exposure image signal; a detection unit configured to obtain a luminance integrated value and a luminance histogram of the combined image signal; and a control unit configured to perform exposure correction control using the luminance integrated value and the luminance histogram.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventor: Akira Asoma
  • Patent number: 8878983
    Abstract: The invention relates to a system for automatically adjusting an exposure time to improve or otherwise optimize a dynamic range of a digital image. The system includes a camera configured to capture an image of a subject within the field of view at a first exposure time. The captured image is composed of multiple pixels, with each pixel having a respective intensity value. The system further includes a shutter or suitable control configured to control an exposure time of the camera. A controller configured to carryout the following steps including: (a) querying a frequency distribution of pixel intensity values; (b) determining an effective “center of mass” of such a distribution, or histogram, to determine an adjusted exposure time; and (c) capturing a second image of the subject at the adjusted exposure time thereby obtaining an image with an improved or optimal dynamic range.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 4, 2014
    Assignee: HistoRx, Inc.
    Inventors: Jason Christiansen, Dylan M. Reilly, Brian Bourke-Martin, Mark Gustavson
  • Publication number: 20140307159
    Abstract: Provided is an action control device, including a variable-transmittance ND filter configured to have transmittance that varies according to an applied voltage, an applied voltage control unit configured to control a voltage to be applied to the variable-transmittance ND filter, and a diaphragm control unit configured to control illuminance through a diaphragm. At a time of monitoring, the illuminance is controlled such that the applied voltage control unit applies a substantially minimum voltage to the variable-transmittance ND filter, and the diaphragm control unit opens or closes the diaphragm, and at a time of imaging preparation or imaging, the illuminance is controlled such that the applied voltage control unit applies a certain applied voltage to the variable-transmittance ND filter in a state of the substantially minimum voltage, and controls transmittance, and the diaphragm control unit performs control such that the diaphragm enters a fully opened state or substantially fully opened state.
    Type: Application
    Filed: October 11, 2012
    Publication date: October 16, 2014
    Applicant: Sony Corporation
    Inventor: Yoshimitsu Takagi
  • Patent number: 8860836
    Abstract: A device for compressing an image for an image sensor, including a module for analog decorrelation of an image for providing low-frequency coefficients and high-frequency coefficients from the image, an analog-digital coefficient converter, and a module for a differentiated analog amplification of the low-frequency coefficients and of the high-frequency coefficients, provided by the analog decorrelation module to provide modified coefficients to the converter.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: October 14, 2014
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Tristan Thabuis, Patrick Villard
  • Patent number: 8860875
    Abstract: An imaging device for recognition (100) includes an image pickup unit (101) that sequentially generates a plurality of images by shooting an object, a face recognition unit (105) that recognizes, in each of the plurality of images, an object region in which the object is located in the image, a face tracking unit (106) that tracks the object region across the plurality of images, an area calculation unit (109) that calculates an area of the object region, and an exposure control unit (102) that sets a first exposure time for the image pickup unit (101) in the case where the area is smaller than a first threshold, and sets a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: October 14, 2014
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventor: Takashi Fujii
  • Patent number: 8854515
    Abstract: A method for adaptive spectral image capture that may be performed via an image capture device is disclosed. A default capture parameter is applied to an imaging assembly and a sample image of a scene is captured by an image capture device. The sample image is analyzed to identify transition zones between multiple different regions. An initial guess as to which spectral regions a filter mode might work best is obtained based on dominant transition region spectrum and a first iterated step in which numerical values for the filter mode are calculated. A second iterated step in which each such filter mode is evaluated for effectiveness against other filter modes. The regions in which a specific filter mode works best becomes associated with the filer mode and these regions become the guess for the next iteration.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Andy Lai Lin, Francisco Imai
  • Patent number: 8836851
    Abstract: Systems, methods, and computer readable media for performing auto-exposure operations in a digital image capture device. An image capture device's auto-exposure settings may be automatically adjusted by generating and then combining, in a dynamically weighted fashion, two sets of exposure values. One set of exposure values may be based on detected faces while the other set may be based on the image as a whole. Each set of exposure values may include a “measured” value and a “target” value, wherein each of these values may, in turn, be based on one or more (different) aspects of the image. Illustrative digital image capture devices in which the disclosed technology may be used include, but are not limited, to portable digital cameras, mobile telephones, personal digital assistants, mobile music and video devices, and portable computer platforms such as notebook and tablet computers.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 16, 2014
    Assignee: Apple Inc.
    Inventor: Ralph Brunner
  • Patent number: 8804028
    Abstract: Multiple uncompressed digital images, each at a different exposure, may be captured automatically in response to an image capture request. The set of uncompressed digital images may be stored as a single data object and manipulated to produce a final digital image.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: August 12, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Donald J. Stavely, Kenneth Jay Hall, Amy E. Battles, Sarah Jean Barrios, Robert E. Sobol
  • Patent number: 8780262
    Abstract: An image pickup apparatus capable of not only detecting whiteout or blackout but also effectively achieving exposure control. In the image pickup apparatus, an entire-screen brightness frequency distribution is detected based on a picked-up image signal. The image pickup apparatus calculates a first exposure control value from the entire-screen brightness frequency distribution. The image signal is divided into a plurality of small areas, and the brightness of each of the small areas is detected. The image pickup apparatus calculates a second exposure control value from the brightness. The image pickup apparatus calculates an exposure correction value based on the first exposure control value and the second exposure control value. An exposure value is calculated using the exposure correction value and an exposure value of the image signal. The image pickup apparatus performs exposure control of the image pickup section based on the calculated exposure value.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hironori Kaida
  • Patent number: 8780261
    Abstract: The present invention is directed to a light sensitivity calibration method and an imaging device. An exposure step is performed to obtain a light sensitivity according to a predetermined time. A time adjustment step is performed to adjust the predetermined time according to the light sensitivity, thereby obtaining an adjusted time. The predetermined time is replaced with the adjusted time and the exposure and time adjustment steps are repeatedly performed, until the adjusted time converges within a predetermined range.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: July 15, 2014
    Assignee: Ability Enterprise, Co., Ltd.
    Inventors: Tai-Hung Chen, Yi-Wen Tsai, Yijian Lee
  • Patent number: 8773577
    Abstract: An example image capture device determines a region of interest using a first image captured while a light source is powered off and a second image captured while a light source is powered on and uses the region of interest to automatically set configurations. In one example, an image capture device includes a controlled light source, an image sensor configured to capture images, and a processing unit configured to cause the image sensor to capture a first image of a scene while the controlled light source is powered off, cause the image sensor to capture a second image of the scene while the controlled light source is powered on, calculate luminance differences between a plurality of regions in the first image and a plurality of collocated regions in the second image, and determine that a region of interest includes those regions for which the luminance differences exceed a threshold.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ruben M. Velarde, Thomas W. Osborne, Szepo Robert Hung, Haiyin Wang, Liang Liang, Ying X Noyes, Edward G. Atrero
  • Patent number: 8760537
    Abstract: Some embodiments of the invention provide a mobile device that captures and produces images with high dynamic ranges. To capture and produce a high dynamic range image, the mobile device of some embodiments includes novel image capture and processing modules. In some embodiments, the mobile device produces a high dynamic range (HDR) image by (1) having its image capture module rapidly capture a succession of images at different image exposure durations, and (2) having its image processing module composite these images to produce the HDR image.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: June 24, 2014
    Assignee: Apple Inc.
    Inventors: Garrett M. Johnson, Guy Cote, James Edmund Orr, IV
  • Patent number: 8736750
    Abstract: An image pickup apparatus includes: an image pickup unit configured to generate a long-exposure image signal and a short-exposure image signal from incident light and output the generated signals as image pickup signals, the long-exposure image signal being generated by exposure for a relatively long period and the short-exposure image signal being generated by exposure for a relatively short period; a signal processing unit configured to generate a combined image signal by combining the long-exposure image signal and the short-exposure image signal, the combined image signal having a dynamic range that is relatively wider than that of at least any one of the long-exposure image signal and the short-exposure image signal; a detection unit configured to obtain a luminance integrated value and a luminance histogram of the combined image signal; and a control unit configured to perform exposure correction control using the luminance integrated value and the luminance histogram.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: May 27, 2014
    Assignee: Sony Corporation
    Inventor: Akira Asoma
  • Patent number: 8736774
    Abstract: A chart generation unit generates an adjustment chart, and a projection unit projects the adjustment chart onto a circular cylinder. A parameter acquiring unit acquires 12 parameters in total, relating to the positions of four corners and middle points of a top side and a bottom side of a chart and lateral expansion of the chart, the chart being input by a user through manipulations of an operation unit. A transform function determination unit calculates, from the total of 12 parameters, an accurate transform function for projecting an image onto the circular cylinder. An image conversion unit applies geometric transformation to the image based on the calculated transform function.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: May 27, 2014
    Assignee: Casio Computer Co., Ltd.
    Inventor: Tetsuro Narikawa
  • Patent number: 8736748
    Abstract: There is provided an image capturing apparatus, comprising an image capturing unit configured to acquire video data at a first frame rate or a second frame rate higher than the first frame rate; and a control unit configured to perform control of an aperture and an exposure time within a range in which the exposure time is shorter than or equal to a maximum exposure time that is a reciprocal of a frame rate of the image capturing unit, so that luminance of the image signal acquired by the image capturing unit is at a predetermined level, wherein when the image capturing unit is operating at the first frame rate, the control unit performs the control within a range in which the exposure time is shorter than a first time that is a reciprocal of the first frame rate.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Taro Takita
  • Patent number: 8711271
    Abstract: A digital photographing apparatus includes an AF region setting unit for setting an AF region, a luminance detection area setting unit for setting a luminance detection area, a luminance calculation unit for calculating luminance values of the AF region and the luminance detection area, and a determination unit for calculating a luminance difference value that is a difference value between the luminance value of the AF region and the luminance value of the luminance detection area, and determining validity of an AF evaluation value with respect to the AF region according to the luminance difference value.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kazuhiko Sugimoto, Jong-hoon Won
  • Patent number: 8698948
    Abstract: An image pickup apparatus includes an object detection unit configured to detect an object, a brightness value acquisition unit configured to obtain a brightness value of each division region of an object field, an object photometric-value generation unit configured to generate a photometric value of the object from information of the object and a brightness value of each division region, a region selection unit configured to select a high brightness region, and an exposure-control photometric-value generation unit configured to generate a photometric value used for an exposure control from a photometric value of the object and a photometric value of the high brightness region.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: April 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Ikeda
  • Patent number: 8687069
    Abstract: The present invention is applied to an image pickup apparatus for which, for example, a CMOS solid-state image pickup element is used. One screen image is divided into a plurality of blocks, and a motion is detected for each of the blocks to control the exposure time of the block.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: April 1, 2014
    Assignee: Sony Corporation
    Inventor: Seiji Kobayashi
  • Patent number: 8681260
    Abstract: An imaging system or camera having an array of elements switchable between two states for measuring of light received by the imaging system on a pixel by pixel basis to form two separate images simultaneously over a common integration time in which switching takes place faster than the integration time of the camera. Optical switching may be provided by a spatial light modulator along one of two paths each associated with a detector for one of the images, or each path being associated with one of two non-overlapping regions of the same detector, where each region provides one of the images. Electronic switching may be provided in which for each pixel a photodetector provide an electrical signal onto a switching element which switches the signal onto one of two sites for integrating the signal and providing a pixel value, where the two sites are each associated with a different one of the images.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: March 25, 2014
    Assignee: Clear Align LLC
    Inventor: Michael Garret Bush
  • Patent number: 8665355
    Abstract: Image capture with an image capture device including an imaging assembly having a spectral response which is tunable in accordance with a capture parameter. A first capture parameter is applied to the imaging assembly. A preview image of a scene is captured using the imaging assembly whose spectral response is tuned in accordance with the first capture parameter. A user interface is displayed by which first and second regions of the preview image are designated, and by which a target range is set for contrast between the first and second regions. A second capture parameter is derived for the imaging assembly, by implementing the target range for contrast between the first and second regions. The second capture parameter is applied to the imaging assembly. A second image of the scene is captured by using the imaging assembly whose spectral response is tuned in accordance with the second capture parameter.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: March 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Francisco Imai
  • Publication number: 20140055666
    Abstract: An image capture apparatus comprises an image capturing unit that captures an object image and outputs image data; a photometric value acquisition unit that acquires, from the image data, a first photometric value and a second photometric value different from the first photometric value; and an exposure change unit that changes exposure such that the first photometric value comes close to a target value, wherein the exposure change unit calculates a third photometric value based on the first photometric value, the target value, and the second photometric value and corrects the exposure in accordance with a difference between the third photometric value and a reference value.
    Type: Application
    Filed: July 26, 2013
    Publication date: February 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kenzo Hisa
  • Patent number: 8654210
    Abstract: An image capture device includes an imaging assembly having a spectral sensitivity tunable in accordance with a spectral capture mask. A pre-capture captures a sample image of a scene using the imaging assembly tuned by a first spectral capture mask. A second spectral capture mask is constructed by calculations which use image data of the sample image. The second spectral capture mask is constructed to tune the spectral sensitivity of the imaging assembly so as to adjust respective capture parameters for different objects in the scene. The second spectral capture mask is applied to the imaging assembly. An image of the scene is captured with the second spectral capture mask applied to the imaging assembly.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: February 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Francisco Imai, John Haikin
  • Publication number: 20140046341
    Abstract: A camera system that can be utilized in robotic surgery is presented. In particular, a method of setting a light level in a camera in a robotic system includes determining a location of at least one instrument end effectors within a field-of-view of the camera; determining a region-of-interest in the field-of-view based on the location of the at least one instrument tip; gathering luminance statistics in the region-of-interest; computing a luminance value from the luminance statistics; and adjusting an exposure in response to a comparison of the luminance value with a target luminance value.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Inventor: Jeffrey DiCarlo
  • Patent number: 8648929
    Abstract: Anti-flicker camera and image capture method are disclosed. According to the disclosed method, exposure integrals of different lines of an image sensed by a camera device are calculated. The exposure integrals are compared with reference exposure integrals of the plurality of lines, respectively, to calculate exposure integral offsets for the lines. The reference exposure integrals are estimated from at least one reference image. The positive and negative changes of the exposure integral offsets are statistically analyzed and, accordingly, it is determined whether there is light flicker from background illumination and an auto-exposure control module of the camera device is controlled based on the determination.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: February 11, 2014
    Assignee: Silicon Motion, Inc.
    Inventors: Wen-Cheng Ho, Yung-Wei Chen
  • Patent number: 8643728
    Abstract: Provided is a method of controlling a digital photographing device, the method including: removing high-frequency components from a first input image and a second input image; calculating a differential image between the first input image and the second input image from which the high-frequency components are removed; calculating the frequency of each of the pixel values of the differential image; determining at lease one pixel value of the differential image having a frequency greater than a frequency threshold as a target motion range among the pixel values of the differential image greater than a motion threshold; and determining photographing settings corresponding to the target motion range.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soon-keun Chang, Eun-sun Ahn
  • Patent number: 8634018
    Abstract: An exemplary aspect of the invention is an image pickup apparatus including a sensor unit including a plurality of pixels; an exposure control unit that controls exposure by a feedback control based on image data acquired by the sensor unit; and a display unit that displays an image having undergone exposure control. During a time period from a point immediately after activation of the image pickup apparatus until a point when an image is displayed on the display unit, the sensor unit executes temporary loading of a part of the image data, and the exposure control unit sets an optimum exposure value based on the image data temporarily loaded.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: January 21, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Toshiharu Ooi
  • Patent number: 8627391
    Abstract: A network connected computer receives data from a wireless communication device including location data and user data. The computer is programmed to determine if the wireless communication device is in a vicinity of a preselected location, stored on the computer, based on the data for identifying the location of the wireless communication device. The computer transmits data to the communication device for notifying the user of the communication device that the user is in the vicinity of the preselected location. Directional information can then be sent to the communication device for the user to access in order to assist the user in finding the preselected location.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 7, 2014
    Assignee: Intellectual Ventures Fund 83 LLC
    Inventors: Tomi Lahcanski, Dustin L. Winters
  • Patent number: 8610818
    Abstract: Systems and methods for improving video stutter in high resolution progressive video captured with fast exposure times. In a first approach, digital video is captured with fast shutter speeds that cause each frame of the video to be sharp. A motion blur is not captured for objects moving within the frame. The video codec generates motion information that may be utilized to add an artificial motion blur to each frame of the digital video during processing in a digital video pipeline. In a second approach, the lens assembly of the digital camera includes an electronically actuated filter that attenuates the light reaching an image sensor such that the shutter speeds may be decreased in order to capture motion blur. The electronically actuated filter may be a liquid crystal display (LCD) device that is set to a plurality of different transparency levels based on the voltage applied to the LCD device.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 17, 2013
    Assignee: Cisco Technology, Inc.
    Inventor: John Furlan
  • Patent number: 8576304
    Abstract: The present invention provides an imaging apparatus capable of performing a live view display showing a multiple image combination result image generated by combining a through-the-lens image with an already captured image at a more suitable combination ratio according to a user's intended operation during multiple exposure shooting. The imaging apparatus switches a multiple image combination result image displayed as a live view from a multiple image combination result image combined at a first combination ratio to a multiple image combination result image combined at a second combination ratio allowing a user to preliminarily check a combination ratio for generating a multiple image combination result image to be recorded into a recording medium, according to a user's operation.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tohru Ishibashi
  • Patent number: 8576331
    Abstract: An image pickup apparatus capable of not only detecting whiteout or blackout but also effectively achieving exposure control. In the image pickup apparatus, an entire-screen brightness frequency distribution is detected based on a picked-up image signal. The image pickup apparatus calculates a first exposure control value from the entire-screen brightness frequency distribution. The image signal is divided into a plurality of small areas, and the brightness of each of the small areas is detected. The image pickup apparatus calculates a second exposure control value from the brightness. The image pickup apparatus calculates an exposure correction value based on the first exposure control value and the second exposure control value. An exposure value is calculated using the exposure correction value and an exposure value of the image signal. The image pickup apparatus performs exposure control of the image pickup section based on the calculated exposure value.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: November 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hironori Kaida
  • Patent number: 8570396
    Abstract: Techniques for creating a High Dynamic Range (HDR) image within a consumer grade digital camera from a series of images of a scene captured at different exposure levels, and displaying the HDR image on the camera's built-in display are provided. The approach employs mixing images of the series to incorporate both scene shadow and highlight details, and the removing of “ghost” image artifacts appearing in the mixed HDR image resulting from movement in the scene over the time the series images are captured. The low computational resource utilization of the image mixing and ghost removal processing operations, along with the ability to commence image mixing and ghost removal prior to the acquisition of all series images, can significantly reduce the time required to generate and display a tone mapped HDR image.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: October 29, 2013
    Assignee: CSR Technology Inc.
    Inventor: Guy Rapaport
  • Patent number: 8558936
    Abstract: An imaging apparatus includes an imaging unit operable to capture a subject image to generate image data, a controller operable to calculate a target exposure value based on the image data and control exposure based on a first shooting parameter set by a user to obtain the target exposure value, and a display unit operable to provide a display. The controller calculates a first suitable range which is a range of the first shooting parameter for obtaining the target exposure value, and calculates a second shooting parameter based on the target exposure value and the first shooting parameter set by the user. The display unit displays exposure guide information including the first shooting parameter set by the user, information representing the first suitable range, and the calculated second shooting parameter.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuji Nomura, Satoko Nishizaki, Tetsuya Satou, Taizo Aoki
  • Patent number: 8553103
    Abstract: Compensation of ambient illumination. A visible image of an object with ambient illumination is captured. Image brightness of at least a portion of said object of said visible image is sampled. A difference between sampled image brightness of at least said portion of said object and a target brightness profile is determined. The difference is compensated for by projecting additional illumination onto said object.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 8, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ramin Samadani, Thomas G. Malzbender
  • Patent number: 8553139
    Abstract: The present invention is an image pickup apparatus including an image pickup device having an image pickup plane on which pixels are two-dimensionally arranged, a mechanical rear curtain shutter that runs along the image pickup plane to control passage/shielding of light, a system control section that divides the image pickup plane into a plurality of pixel groups along the running direction ahead of running of the mechanical rear curtain shutter and collectively resets charge of all pixels in one pixel group sequentially at timing per pixel group according to running characteristics of the mechanical rear curtain shutter, and an image processing section that corrects a signal level of an image signal read from the image pickup device to approximate to an image signal obtained when the pixels have a same exposure time based on the running characteristics of the mechanical rear curtain shutter and reset timing for each pixel group.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: October 8, 2013
    Assignee: Olympus Imaging Corp.
    Inventor: Hiroaki Iwasaki
  • Patent number: 8553140
    Abstract: An image acquisition apparatus includes: an imaging device on which an image of a small area allocated to an area to be imaged is formed; a detection section detecting intensity of light irradiated on the small area from a light source; an integration section integrating the intensity of light detected by the detection section; if an integration value of the intensity of light integrated by the integration section from a point in time when light is emitted from the light source is greater than a predetermined threshold value, a light-source control section terminates light emission; an exposure control section starting exposure of the imaging device before light is emitted from the light source and terminating exposure of the imaging device after emission of light from the light source is terminated; and an image acquisition section acquiring the image of the small area as a divided image from the imaging device.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: October 8, 2013
    Assignee: Sony Corporation
    Inventors: Takamichi Yamakoshi, Koichiro Kishima
  • Publication number: 20130258175
    Abstract: An image sensing apparatus obtains the weighted average luminance of an image sensing target that puts weight on a main subject in an obtained luminance distribution of the image sensing target. The image sensing apparatus decides exposure control values based on the average luminance of a region that is lower than the weighted average luminance, out of regions each of a predetermined size contained in the image sensing target, and the weighted average luminance.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 3, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Toshifumi Osawa
  • Patent number: 8547451
    Abstract: Provided is an apparatus and method for obtaining a high dynamic range (HDR) image. The apparatus includes an image sensor generating a first image by applying different exposure times for units of different predetermined regions, an image separating unit separating the first image into images, each of which is composed of regions having an identical exposure time, an image restoring unit restoring the separated images in such a way that each of the separated images has a resolution that is the same as a resolution of the first image, and an image synthesizing unit synthesizing the restored images into a second image.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronic Co., Ltd.
    Inventors: Seung-ki Cho, Hyun-seok Hong, Hee-chul Han, Yang-lim Choi, Yong-ju Lee
  • Patent number: 8542315
    Abstract: A method and apparatus for enabling wide intensity range in digital imaging using a small amount of memory beyond the memory required for storing the relevant image. The methods and apparatus disclose exposing few-line segments within an image using two different exposure times before continuing with other segments of the image. In alternative configurations, sensors are sampled such that neighboring sensors having the same colors are sampled after being exposed for different durations.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: September 24, 2013
    Assignee: Broadcom Corporation
    Inventors: Noam Sorek, Ilia Vitsnudel, Ron Fridental
  • Patent number: 8531588
    Abstract: A method for adjusting an exposure condition of an optical sensor module includes the following steps, (A) receiving reflected light reflected by a working surface; (B) generating an image signal by exposing the optical sensor module to the reflected light, in which the image signal includes a plurality of luminance signals and an image quality signal; (C) setting an exposure condition of the optical sensor module according to part of the luminance signals; (D) repeating Step (B) and Step (C) under different exposure conditions so that the optical sensor module generates a plurality of image quality signals; and (E) setting an optimal exposure condition corresponding to the working surface according to the image quality signals under the different exposure conditions. The optical sensor module is applicable to a pointing device.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 10, 2013
    Assignee: Pixart Imaging Inc.
    Inventors: Shu-Sian Yang, Hsin-Chia Chen, Tzung-Min Su
  • Patent number: 8531554
    Abstract: There is provided an image capturing method for use in an image capturing apparatus including an image capturing unit configured to capture an image of an object to output image data. The method includes performing a first position adjustment between the image data obtained under the first image capturing control and the image data obtained under the second image capturing control, thereby calculating a first displacement, performing a second position adjustment between the image data obtained under the second image capturing control and the image data obtained under the third image capturing control, thereby calculating a second displacement, and performing an image composition of obtaining image data representing a composite image, by performing a position adjustment between the image data obtained under the first image capturing control and the image data obtained under the third image capturing control, using the first and second displacements.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: September 10, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Kazuhisa Matsunaga
  • Patent number: 8531589
    Abstract: An image pickup device (100) wherein a target area, on which an exposure control is based, is accurately detected to perform the exposure control most favorably to the target.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventor: Weijie Liu
  • Patent number: 8525900
    Abstract: Techniques for creating a High Dynamic Range (HDR) image within a consumer grade digital camera from a series of images of a scene captured at different exposure levels, and displaying the HDR image on the camera's built-in display are provided. The approach employs mixing images of the series to incorporate both scene shadow and highlight details, and the removing of “ghost” image artifacts appearing in the mixed HDR image resulting from movement in the scene over the time the series images are captured. The low computational resource utilization of the image mixing and ghost removal processing operations, along with the ability to commence image mixing and ghost removal prior to the acquisition of all series images, can significantly reduce the time required to generate and display a tone mapped HDR image.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: September 3, 2013
    Assignee: CSR Technology Inc.
    Inventor: Haim Garten
  • Publication number: 20130222680
    Abstract: An image pickup apparatus and a lens apparatus capable of photographing high-grade still images even where an interlace type image pickup element is used are to be provided. When an instruction to photograph a still image is entered, a camera microcomputer generates a timing to intercept light coming incident on a lens according to the aperture value of an iris, and transmits this timing to a lens microcomputer. The lens microcomputer supplies a control signal to an aperture control circuit according to the received timing, and a mechanical shutter is caused to operate as the aperture control circuit closes the iris at high speed.
    Type: Application
    Filed: April 12, 2013
    Publication date: August 29, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: CANON KABUSHIKI KAISHA