Display Photometry Patents (Class 348/191)
  • Patent number: 11376961
    Abstract: Method and system for demonstrating a function of a vehicle-mounted heads up display are disclosed. The method includes setting a projection region for displaying a first image, obtaining relative position and relative size relationships between the projection region and the virtual display region, projecting the first image in the projection region, capturing a second image of the first image, generating a virtual recognition region in the second image, determining whether an object in the second image is located within the virtual recognition region, and determining, in a case that the object is located within the virtual recognition region, a first position of the object within the virtual recognition region, determining, based on the first position, a display position of a virtual marker representative of the object within the virtual display region, and displaying the virtual marker at the display position within the virtual display region.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: July 5, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Wei Wei
  • Patent number: 11330253
    Abstract: Methods, systems, and apparatus for a stray-light testing apparatus. In one aspect, the apparatus includes an optical assembly including a spatially extended light source and one or more optical elements arranged to direct light from the spatially extended light source along an optical path, a moveable frame supporting the optical assembly including one or more adjustable alignment features for guiding positioning of the stray-light testing apparatus relative to an onboard camera on a vehicle, and a shrouding mechanism attached to the frame and positioned on the frame such that, when the stray-light testing apparatus is aligned relative to the onboard camera on the vehicle and the optical path of the optical assembly is within the field of view of the onboard camera, ambient light exposure for the onboard camera is below a threshold.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: May 10, 2022
    Assignee: Waymo LLC
    Inventors: Chen David Lu, Erik Chubb
  • Patent number: 11210991
    Abstract: In a method of generating correction data for each of a plurality of display devices, a characteristic distribution for initial display devices among the plurality of display devices may be obtained, center characteristic compensation data may be generated based on the characteristic distribution for the initial display devices, the center characteristic compensation data may be applied to subsequent display devices that are subsequent to the initial display devices among the plurality of display devices, mura correction data and image quality correction data may be generated by performing mura correction and image quality correction on each of the subsequent display devices to which the center characteristic compensation data are applied, and the center characteristic compensation data, the mura correction data and the image quality correction data may be written into each of the subsequent display devices.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: December 28, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Seob Chung, Hoi Sik Moon, Hyung Woo Yim, Kang Hyun Kim, Hak Mo Choi
  • Patent number: 11211021
    Abstract: A grayscale adjustment method of a display panel, a grayscale adjustment device and a display device using the same are provided. The grayscale adjustment method includes steps of capturing an image of the display panel to obtain a current image; identifying a non-uniform block in the current image, and detecting an original output brightness value and an original input grayscale of the non-uniform block; determining a target input grayscale corresponding to a preset target brightness value according to an actual gamma curve value, wherein the actual gamma curve value is obtained by testing the display panel; and setting a difference between the original input grayscale and the target input grayscale as a grayscale compensation value of the non-uniform block.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: December 28, 2021
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Mingliang Wang
  • Patent number: 10937386
    Abstract: A color calibrator used to correct the display color of a display device is provided. The color calibrator includes a color correction module, a cover and a combiner. The color correction module includes a color correction unit for correcting the display color. The cover is connected to the color correction module to selectively expose or cover the color correction unit. The combiner is disposed on the cover, and the combiner is connected to the display device when the cover exposes the color correction unit.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 2, 2021
    Assignee: BenQ Corporation
    Inventors: Liu-Yi Huang, Hsin-Nan Lin, Wei-Chung Hsu, Ping Li, Ta-Yuan Lee
  • Patent number: 10893246
    Abstract: A projection system including a processing device and a projector is provided. The projector is coupled to the processing device. The projector includes a projection unit and an image capturing unit. The projection unit is configured to project an image frame onto a projection plane, where the image includes a grid point array. The image capturing unit is configured to capture the image frame on the projection plane according to a plurality of setting parameters, so as to obtain a plurality of captured images corresponding to the setting parameters. The processing device selects one of the captured images meeting a preset image condition as a desired captured image, and sets the image capturing unit according to a desired setting parameter. In addition, an automatic setting method is also provided. The projection system of the invention can operate without complex manual setting procedures.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 12, 2021
    Assignee: Coretronic Corporation
    Inventors: Chi-Wei Lin, Chien-Chun Peng, Yung-Chiao Liu
  • Patent number: 10880530
    Abstract: A projector and a brightness adjusting method are provided. The projector includes a distance sensor configured to detect a distance between the projector and a projection plane, a light source, a brightness controlling circuit, and a processor. The light source is configured to provide an illumination beam. The brightness controlling circuit is configured to control the light source. The processor calculates according to the distance to obtain an image size of a projected image on the projection plane and instructs the light source to adjust a luminous flux of the illumination beam according to the image size of the projected image for generating a target brightness value of the projected image. Here, the brightness of the projector is adjusted and maintained to allow users to comfortably watch images with proper brightness.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: December 29, 2020
    Assignee: Coretronic Corporation
    Inventor: Yun-Lin Miao
  • Patent number: 10692413
    Abstract: A display device includes a display module and a color calibrator. The display module includes a first casing and a circuit board. The first casing has a positioning recess and an accommodating recess. The circuit board has a first electrical connecting portion. The circuit board is disposed corresponding to the positioning recess and the first electrical connecting portion is exposed from the positioning recess. The color calibrator includes a second casing, a second electrical connecting portion and a sensor. The second casing has a protruding portion. The color calibrator is selectively accommodated in the accommodating recess or connected to the positioning recess by the protruding portion. When the protruding portion of the color calibrator is connected to the positioning recess, the first electrical connecting portion is electrically connected to the second electrical connecting portion and the sensor faces a display area of the display module.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: June 23, 2020
    Assignee: Qisda Corporation
    Inventors: Chun-Jung Chen, Yung-Yeh Chang
  • Patent number: 10192325
    Abstract: A method for calibrating an imaging device includes calculating attitude information of the imaging device relative to a screen based at least in part on an image captured by the imaging device. The image includes information of at least a portion of a checkerboard displayed on the screen. The method further includes generating a calibration signal based at least in part on the attitude information, displaying the calibration signal on the checkerboard on the screen, and displaying a guiding signal on the screen. The guiding signal is configured to guide a user to move the imaging device or the screen.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: January 29, 2019
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Yu Shen, Ang Liu, Ketan Tang
  • Patent number: 10129466
    Abstract: An image generating apparatus includes: an input unit that inputs data on a defocused image group; a storage unit that stores data on a plurality of filters generated based on a three-dimensional blur function; and a computing unit that generates a new image by applying the filter to the defocused image group. When a first element of a first filter out of the plurality of filters is symmetrical or anti-symmetrical with a second element included in the first filter or a second filter, which is different from the first filter, the storage unit does not store the data on the first element, and the computing unit generates the data on the first element of the first filter based on data on the second element which is stored in the storage unit when the first filter is used.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Sato, Kazuya Kodama
  • Patent number: 9595299
    Abstract: To synchronize sound information with corresponding picture information for digital cinema compositions at different frame rates in a play list during play out of the digital cinema compositions, associated audio latency settings are first established for the corresponding picture information of the digital cinema compositions in the play list in accordance with the digital cinema composition frame rates. The timing between the sound information and the picture information is then adjusted during play out of the digital cinema compositions in accordance with the associated audio latency settings for the corresponding digital cinema composition frame rates.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: March 14, 2017
    Assignee: Thomson Licensing
    Inventor: William Gibbens Redmann
  • Patent number: 9565966
    Abstract: A coffee filter qualification system receives user-specified filter criteria relating to acceptable attributes for a plurality of apertures included in a liquid brewing filter. A light source illuminates the apertures of the liquid brewing filter and a machine vision camera images the apertures of the filter. A filter qualification information handling system (IHS) determines if the liquid brewing filter meets the predefined user-specified filter criteria. The filter qualification IHS accepts the liquid brewing filter if the filter meets the filter criteria, and otherwise rejects the filter. The filter criteria may include the total cumulative area of the apertures, individual aperture area, aperture count and aperture acircularity information.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: February 14, 2017
    Assignee: Voice Systems Technology, Inc.
    Inventor: Vincent Fedele
  • Patent number: 9565365
    Abstract: A portable electronic device includes a camera and a display switchable between a portrait mode and a landscape mode in response to an inertial sensor. When it is determined that the display mode should be switched in response to movement of the device, a feature of a user of the device, such as the user's face, is imaged with the camera. If the imaged feature changes orientation with respect to the display by less than a threshold amount, then the switch in display mode is disabled and the display remains in its current mode. Other embodiments are also described and claimed.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: February 7, 2017
    Assignee: Apple Inc.
    Inventors: Koji Gardiner, E-Cheng Chang, Jason Rukes
  • Patent number: 9324146
    Abstract: Certain examples provide photometric or radiometric calibration using optical feedback. A disclosed example includes dithering between a first display pixel value and a second display pixel value to create a light source from a display. The disclosed example includes capturing the light source using a camera via a plurality of photographs taken by the camera. Each photograph includes a plurality of camera pixels. The disclosed example includes determining a camera response by measuring plurality of camera quantization levels associated with the plurality of camera pixels based on the first display pixel value and the second display pixel value. The disclosed example also includes determining a display response based on the plurality of camera quantization levels. The display response includes a plurality of luminance output values of the display.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: April 26, 2016
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Paul J. Olczak, John E. Tumblin
  • Patent number: 9319671
    Abstract: Provided is a video quality assessment system for digital TV. The video quality assessment system includes a video quality test signal insertion device which inserts a test signal for testing video quality into a predetermined area of a transient effect area (TEA) of each frame of a source video and a video quality measurement device which detects the test signal from a predetermined area of the video signal recovered after reception and outputs the test signal. Preferably, an insertion position of the test signal is one line or two or more lines of the TEA area which are located in a lower end portion of the video, and the test signal is configured with multi-bursts including a large number of frequencies which are in a range of DC to ½ of a sampling frequency.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: April 19, 2016
    Assignee: KANGWON NATIONAL UNIVERSITY UNIVERSITY-INDUSTRY COOPERATION FOUNDATION
    Inventor: Chan Ho Han
  • Patent number: 9013589
    Abstract: A digital image processing method includes obtaining photographing setting information from an input image, obtaining one or more candidate images corresponding to the obtained photographing setting information from a first database that stores candidate images, and determining photographing setting information for a selected candidate image from a second database that stores photographing setting information corresponding to the candidate images.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-ock Yim, Ji-hyun Goh
  • Patent number: 9013580
    Abstract: A method and a system for adjusting display parameters are provided. In the method, at least one real display parameter of a display to be adjusted is measured. A target template in accordance with the at least one real display parameter is searched from a plurality of templates stored in a database and target parameter adjusting data recorded in the searched target template is obtained, in which each template in the database records the at least one reference display parameter of a tested display and the reference parameter adjusting data used to adjust the tested display. Finally, the display is set and adjusted according to the obtained target parameter adjusting data.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: April 21, 2015
    Assignee: Wistron Corporation
    Inventors: Ching-Nan Lin, Chia-Yi Chen, Chun-Yi Wu, Kuo-Ting Ho
  • Patent number: 8970764
    Abstract: A digital image signal processing apparatus having an angle of view preview function, a method of controlling the digital image signal processing apparatus, and a recording medium having embodied thereon a computer program for executing the method. Accordingly, a display image displaying at least one piece of angle of view information that is different from angle of view information of a currently mounted interchangeable lens is generated by performing image signal processing, and the display image is displayed. Accordingly, a photographer is informed about angle of view information needed to capture a desired image, and the photographer may easily select an interchangeable lens having desired angle of view information.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hun-young Ryu
  • Patent number: 8958004
    Abstract: A portable electronic device includes a camera and a display switchable between a portrait mode and a landscape mode in response to an inertial sensor. When it is determined that the display mode should be switched in response to movement of the device, a feature of a user of the device, such as the user's face, is imaged with the camera. If the imaged feature changes orientation with respect to the display by less than a threshold amount, then the switch in display mode is disabled and the display remains in its current mode. Other embodiments are also described and claimed.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: February 17, 2015
    Assignee: Apple Inc.
    Inventors: Koji Gardiner, E-Cheng Chang, Jason Rukes
  • Patent number: 8953048
    Abstract: The present invention ensures the visibility of a character or a drawing displayed on a screen. The illuminance of one or more partial areas forming a display unit is measured, and a video display position is set to an area except for the partial area where the illuminance is a reference value or more.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Furukawa
  • Patent number: 8947448
    Abstract: A parallax representation unit in a displayed image processing unit uses a height map containing information on a height of an object for each pixel to represent different views caused by the height of the object. A color representation unit uses, for example, texture coordinate values derived by the parallax representation unit to render the image, shifting the pixel defined in the color map. The color representation unit uses the normal map that maintains normals to the surface of the object for each pixel to change the way that light impinges on the surface and represent the roughness accordingly. A shadow representation unit uses a horizon map, which maintains information for each pixel to indicate whether a shadow is cast depending on the angle relative to the light source, so as to shadow the image rendered by the color representation unit.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 3, 2015
    Assignees: Sony Corporation, Sony Computer Entertainment Inc.
    Inventors: Hiroyuki Segawa, Noriaki Shinoyama, Akio Ohba, Tetsugo Inada
  • Patent number: 8902372
    Abstract: A display system includes a laser projector that projects light onto a the back of a screen, a sensor that detects light reflected from the back of the screen, a processor in communication with the sensor, the processor controlling light projected from the laser projector based on data regarding the light detected from the sensor. The laser projector, sensor, and processor are all contained within a single housing.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: December 2, 2014
    Assignee: Superlumenary
    Inventors: Robert Loney, Matthew Ward
  • Patent number: 8872093
    Abstract: An electronic device may be provided with an image sensor for capturing digital images. The image sensor may be used as part of image-sensor-based ambient light sensing circuitry for producing ambient light sensor readings. The image-sensor-based ambient light sensing circuitry may include a reference array. The reference array may be formed from an array of light sensor elements that are matched to elements in the image sensor but that are covered with a light blocking material. Control circuitry can measure current flow into the reference array and the image sensor array and can use current measurements from these arrays in producing a calibrated ambient light sensor reading. The control circuitry may make current measurements by measuring a decay time associated with the voltage of a discharging capacitor. A comparator, pulse generator, and switch may be used in periodically recharging the capacitor. The capacitor may be adjusted to ensure accurate readings.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: October 28, 2014
    Assignee: Apple Inc.
    Inventors: Chiajen Lee, Anup Sharma, Xiaofeng Fan
  • Publication number: 20140307106
    Abstract: An apparatus for controlling electronic devices has a camera and a transmitter. The camera acquires a first image of an electronic device. The device is configured for remote control. The apparatus identifies a probable identity of the device by comparing the first image to a plurality of stored images of known electronic devices. Test instructions are selected based on the probable identity of the device and sent to the device. A confirmation image of the device is acquired after the test instructions are sent. The apparatus determines from the confirmation image that the state of the device is consistent with execution of the test instructions. The apparatus receives user input specifying a command for the device. Based on the first image, the device is not in a state corresponding to the command, so the apparatus transmits an instruction corresponding to the command to the device.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventor: Ronald Hughes
  • Publication number: 20140307105
    Abstract: A method and a system for adjusting display parameters are provided. In the method, at least one real display parameter of a display to be adjusted is measured. A target template in accordance with the at least one real display parameter is searched from a plurality of templates stored in a database and target parameter adjusting data recorded in the searched target template is obtained, in which each template in the database records the at least one reference display parameter of a tested display and the reference parameter adjusting data used to adjust the tested display. Finally, the display is set and adjusted according to the obtained target parameter adjusting data.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 16, 2014
    Applicant: Wistron Corporation
    Inventors: Ching-Nan Lin, Chia-Yi Chen, Chun-Yi Wu, Kuo-Ting Ho
  • Patent number: 8817111
    Abstract: This invention provides a calibration system and method for multi-unit display systems without a need for switching the system input resolution/configuration of the display system while calibrating. This serves to avoid carrying out a re-synchronization step. As such, this system and method allows for increases speed and reduced likelihood of failure. This system and method also corrects the display system by providing an arrangement that employs a minimum of required changes so as to avoid any changes that can consequently affect the output image of the display system. Calibration of the system of display units occurs free of any changes to the input resolution and this resolution is maintained in a manner that resists change unless specifically required. Moreover, this system and method enables a resolution for the overall system that differs from the sum of the input resolutions of the discrete, individual display units in the collection.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 26, 2014
    Assignee: Scalable Display Technologies, Inc.
    Inventors: Dennis Miaw, Rajeev J. Surati, Kevin Amaratunga, Samson J. Timoner, Tyler M. Johnson
  • Patent number: 8817108
    Abstract: A method is for monitoring the electrical integrity of lines of photosites of an imaging device with matrix array of photosites. The control lines of photosites may include for each line of photosites an emission of elementary electrical control signals for the photosites of the line. The method may include diagnosis of the elementary electrical control signals emitted.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: August 26, 2014
    Assignee: STMicroelectronics (Grenoble 2) SAS
    Inventor: Pascal Mellot
  • Publication number: 20140192209
    Abstract: An optical test equipment/method for display testing that features parallel testing/sensing configuration that covers spectrum and colorimetric quantities with spatial resolution is disclosed. In one embodiment, a spectra-camera, which is a hybrid system consisting of both a single-point spectrometer and an imaging colorimeter, can be configured for concurrent display artifact and parametric testing. An aperture mirror with a hole in the middle splits an image of a test display into two parts. One part of the image passes through the hole and is directed to the spectrometer for display parametric testing. The rest of the image is reflected off the aperture mirror for concurrent display artifact testing with the colorimeter. In another embodiment, a beam splitter can be used instead of an aperture mirror. In yet another embodiment, the single-point high accuracy spectrometer can be used to calibrate the low accuracy imaging colorimeter.
    Type: Application
    Filed: January 7, 2013
    Publication date: July 10, 2014
    Applicant: Apple Inc.
    Inventors: Ye YIN, Gabriel Marcu, Julia C. Davoud
  • Publication number: 20140160301
    Abstract: Certain aspects relate to a method and system whereby any defined system characteristic, property, or parameter can be normalized for farther improving the displayed image quality. The normalization processing can use a generalized calibration process and can normalize a system characteristic, or a system property, and/or parameter to result in a more uniform or accurately displayed image using a generalized image processing method.
    Type: Application
    Filed: July 20, 2012
    Publication date: June 12, 2014
    Applicant: IMAX CORPORATION
    Inventors: Weining Tan, Steven Charles Read, Matthew O'Dor
  • Patent number: 8749635
    Abstract: Systems and methods disclosed herein provide for infrared camera systems and methods for dual sensor applications. For example, in one embodiment, an enhanced vision system comprises an image capture component having a visible light sensor to capture visible light images and an infrared sensor to capture infrared images. The system comprises a first control component adapted to provide a plurality of selectable processing modes to a user, receive a user input corresponding to a user selected processing mode, and generate a control signal indicative of the user selected processing mode, wherein the plurality of selectable processing modes includes a visible light only mode, infrared only mode, and a combined visible-infrared mode.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: June 10, 2014
    Assignee: FLIR Systems, Inc.
    Inventors: Nicholas Högasten, Jeffrey S. Scott, Patrick B. Richardson, Jeffrey D. Frank, Austin A. Richards, James T. Woolaway
  • Publication number: 20140132778
    Abstract: Color calibration of color image rendering devices, such as large color displays, which operate by either projection or emission of images, utilize internal color measurement instrument or external color measurement modules locatable on a wall or speaker. A dual use camera is provided for a portable or laptop computer, or a cellular phone, handset, personal digital assistant or other handheld device with a digital camera, in which one of the camera or a display is movable with respect to the other to enable the camera in a first mode to capture images of the display for enabling calibration of the display, and in a second mode for capturing image other than of the display. The displays may represent rendering devices for enabling virtual proofing in a network, or may be part of stand-alone systems and apparatuses for color calibration.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: RAH COLOR TECHNOLOGIES LLC
    Inventor: RICHARD A. HOLUB
  • Patent number: 8711225
    Abstract: An image-capturing device and a projection automatic calibration method of a projection device are provided. The image-capturing device includes an image sensing device, a lens, a processing unit and a storage unit. The lens is configured to image a calibration pattern on the image sensing device. The processing unit is configured to issue a projection calibration requirement and analyze the calibration pattern imaged on the image sensing device to obtain information relating to the calibration pattern, and the processing unit is further configured to convert imaging coordinates of the calibration pattern imaged on the image sensing device into projecting coordinates of the projection device by executing a calibration driving program to establish a coordinate conversion table. The storage unit is configured to store the calibration driving program and the coordinate conversion table.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: April 29, 2014
    Assignee: Coretronic Corporation
    Inventors: Kun-Rong Chang, Wen-Wei Tsai
  • Patent number: 8643714
    Abstract: A test device is for testing display parameters of an electronic product with a page browsing function. The electronic product stores display times of a number of standard frames which selected from a standard video file. The standard video file includes frames record the play process of a testing file being played by a standard electronic product. The test device controls a video capturing unit to capture an original video file which includes frames to records the playing process of the electronic product. The electronic product searches matching frames of the number of standard frames in the original video file. Thus the parameters of the electronic product can be determined by display times of the matching frames in the video file.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: February 4, 2014
    Assignees: Fu Tai Hua Industry (Shenzhen) Co. Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Yu-Kai Xiong, Xin Lu, Shih-Fang Wong, Dong-sheng Lv, Xin-Hua Li, Yu-Yong Zhang, Jian-Jian Zhu
  • Patent number: 8610781
    Abstract: A system for adjusting the light uniformity of a monitor. The system comprises a camera for capturing a test pattern image on a display of the monitor and a controller configured to select the test pattern image and to cause the monitor to display the selected test pattern image. The controller receives the captured image from the camera and compares pixel values from the captured image to known pixel values associated with the selected test pattern image. The selected test pattern image has an ideal uniform light distribution and the captured image has a non-uniform light distribution. In response to the comparison, the controller calculates a compensation light distribution that may be combined with the non-uniform light distribution to generate a resulting image on the display of the monitor having a resulting light distribution that approximates the ideal uniform light distribution.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: December 17, 2013
    Assignee: STMicroelectronics, Inc.
    Inventors: Dong Wei, Zhao Huang, Greg Neal, Caba Moldvai
  • Patent number: 8593556
    Abstract: A digital image signal processing apparatus having an angle of view preview function, a method of controlling the digital image signal processing apparatus, and a recording medium having embodied thereon a computer program for executing the method. Accordingly, a display image displaying at least one piece of angle of view information that is different from angle of view information of a currently mounted interchangeable lens is generated by performing image signal processing, and the display image is displayed. Accordingly, a photographer is informed about angle of view information needed to capture a desired image, and the photographer may easily select an interchangeable lens having desired angle of view information.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: November 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hun-young Ryu
  • Patent number: 8593558
    Abstract: A portable electronic device includes a camera and a display switchable between a portrait mode and a landscape mode in response to an inertial sensor. When it is determined that the display mode should be switched in response to movement of the device, a feature of a user of the device, such as the user's face, is imaged with the camera. If the imaged feature changes orientation with respect to the display by less than a threshold amount, then the switch in display mode is disabled and the display remains in its current mode. Other embodiments are also described and claimed.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: November 26, 2013
    Assignee: Apple Inc.
    Inventors: Koji Gardiner, E-Cheng Chang, Jason Rukes
  • Patent number: 8564688
    Abstract: Methods, systems and apparatuses for white balance calibration. A calibration correction matrix is specifically calibrated for each individual imager, thereby providing improved automatic white balance performance. The individual imager calibration corrects for variation of the spectral response among different imagers. The calibration correction matrix is placed before the gray checker module, which analyzes the chromaticity of the image pixels and supplies resulting statistics to the automatic white balance decision engine for use in automatic white balance operations. The calibration correction matrix may be implemented as a 3×3 matrix.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: October 22, 2013
    Assignee: Aptina Imaging Corporation
    Inventor: Ilia Ovsiannikov
  • Patent number: 8525885
    Abstract: A system to perform automated audio visual (AV) delay measurement for a system under test (SUT) includes a test pattern generator to generate a dynamic AV test pattern and connected to a source display device and to one or more destination video display devices; at least one light sensor coupled to the one or more destination video display devices; an AV capture device having video inputs connected to the light sensors; and an AV delay analyzer coupled to the AV capture device to perform multi-channel delay parameters analysis.
    Type: Grant
    Filed: May 15, 2011
    Date of Patent: September 3, 2013
    Assignee: Videoq, Inc.
    Inventors: Victor Steinberg, Michael Shinsky
  • Publication number: 20130169826
    Abstract: The disclosed method is directed to viewing a simulated light output generated for a first display on a second display. First, the simulated light output is generated based on qualities of the first display. Next, the simulated light output is compensated for color differences, temporal differences, luminance differences including gamma difference, and differences in viewing environment between the first and the second display, in real-time. Then, the simulated light output that has been compensated for the differences and for viewing environment is output for the second display.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: TEKTRONIX, INC.
    Inventor: KEVIN M. FERGUSON
  • Publication number: 20130107060
    Abstract: A system for adjusting the light uniformity of a monitor. The system comprises a camera for capturing a test pattern image on a display of the monitor and a controller configured to select the test pattern image and to cause the monitor to display the selected test pattern image. The controller receives the captured image from the camera and compares pixel values from the captured image to known pixel values associated with the selected test pattern image. The selected test pattern image has an ideal uniform light distribution and the captured image has a non-uniform light distribution. In response to the comparison, the controller calculates a compensation light distribution that may be combined with the non-uniform light distribution to generate a resulting image on the display of the monitor having a resulting light distribution that approximates the ideal uniform light distribution.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Applicant: STMICROELECTRONICS, INC.
    Inventors: Dong Wei, Zhao Huang, Greg Neal, Caba Moldvai
  • Patent number: 8331721
    Abstract: An arrangement is provided for automatically correcting a digital image by first examining the image to determine the class or type of correction that is needed to produce a more accurate rendition. The classes or types of corrections may include such items as exposure, color, depth of field, sharpness, distortion, and combinations thereof. The type of correction that is needed by any particular digital image is determined from an analysis of the image itself. Instead of presenting the user with a single corrected image, the user is typically presented with different renditions of the image. Each rendition corrects for the particular type of correction that has been identified, but in different ways from one another.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: December 11, 2012
    Assignee: Microsoft Corporation
    Inventor: Tomasz S. M. Kasperkiewicz
  • Patent number: 8320658
    Abstract: An unevenness inspection method for inspecting presence of unevenness in a panel material, the method includes: acquiring a plurality of primary images by imaging the panel material under inspection on a plurality of levels of condition; creating a plurality of secondary images by processing the plurality of primary images to enhance variation of the image; creating a composite image by combining the plurality of secondary images with a prescribed weighting; and determining the presence of unevenness using the composite image, the prescribed weighting being determined so that a region having the unevenness can be distinguished from the other region, when the plurality of secondary images are created for the panel material for training use having unevenness and are combined into a composite image.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: November 27, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Tanizaki, Naoko Toyoshima, Yosuke Okamoto, Yasunori Takase
  • Patent number: 8264547
    Abstract: Test patterns and associated techniques for testing the fidelity of intensity reproduction are disclosed. One set of embodiments provide test patterns that incorporate anti-aliased features such as anti-aliased edges or lines. In various embodiments, these anti-aliased features expose undesirable, nonlinear transformations of the test patterns by one or more devices in an image output system or chain. Using these test patterns, users may more easily evaluate the end-to-end gamma response of the system, and may more easily calibrate gamma controls accordingly. Additionally, users may more easily identify nonlinear image resampling performed in gamma, rather than linear, space.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 11, 2012
    Assignee: Pixar
    Inventors: Rick Sayre, Rod Bogart
  • Patent number: 8259181
    Abstract: An image quality assessment method and an image quality assessment apparatus are provided. In the image quality assessment method, the contrast of a measurement pattern displayed on the display apparatus, the brightness of the background, and the resolution are adjusted, and thereby the luminance characteristic of the measurement pattern is detected. Accordingly, the image quality of a display apparatus can be assessed using the number of waves determined from the luminance characteristic and the modulation transfer function (MTF) of the waves. Therefore, image quality assessment can be performed objectively by the display apparatus.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tae-hee Kim
  • Patent number: 8189122
    Abstract: In a method for automatic color wheel calibration in a projector, the color wheel includes three primary colors and a non-primary color. The method includes: enabling the projector to project the non-primary color, and measuring first optical physical amounts of the projected non-primary color; enabling the projector to project a combination color of the three primary colors having respective color level values, measuring second optical physical amounts of the projected combination color, and adjusting the respective color level values of the three primary colors according to respective values of differences between the first optical physical amounts and the second optical physical amounts; and repeating the above steps until each of the values of differences approximates zero, thereby obtaining color level values for the three primary colors to produce a combination color matching the non-primary color.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: May 29, 2012
    Assignee: Acer Incorporated
    Inventors: Chueh-Pin Ko, Chen-Kang Su
  • Publication number: 20120127324
    Abstract: In a class of embodiments, a method and system for characterizing a display device using a camera device (e.g., a consumer grade, mobile camera device) to sense light emitted by the display device during display of one or more test images, and to generate measurement data characterizing the display and/or calibration data useful for calibrating the display device. In some embodiments, the display device is adjusted or calibrated manually in response to such calibration data, for example by user actuation of display device controls in response to calibration data indicative of display setting recommendations. In some embodiments, the test image(s) are embedded in a video stream (e.g., overlaid on arbitrary video content). For example, test images including appropriate timing information and calibration sequences are embedded in a video stream for display by the display device. In some embodiments, the user is prompted to align the camera device (e.g.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 24, 2012
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Glenn Dickins, Simon Aridis-Lang
  • Patent number: 8164632
    Abstract: A picture is scrolled on a display 5 to be measured, and the scrolling moving picture is pursuit-captured by a color camera 3 so as to obtain a pursuit-captured moving picture image. A moving picture response curve using received light intensity data obtained based upon the pursuit-captured moving picture image is converted into a color moving picture response curve using emission intensity of display elements of the display 5 to be measured. The coloration of an edge part of the pursuit-captured moving picture image is decomposed into the respective color components, by which objective quantitative evaluations of color shifting can be made.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: April 24, 2012
    Assignee: Otsuka Electronics Co., Ltd.
    Inventors: Yoshi Enami, Yoshihisa Furukawa, Hiroyuki Nakamoto, Tsutomu Mizuguchi
  • Patent number: 8094196
    Abstract: A matched state detection unit (33) of a video matching device (100) detects a reference video frame, of the respective video frames of a reference video (1) and degraded video (2B), which is in a matched state in which it is spatially and temporally matched with each degraded video frame. A matching degree derivation unit (34) controls a degradation amount derivation unit (40) to acquire the first degradation amount indicating the degradation amount between a reference video frame and a degraded video frame in the matched state and the second degradation amount indicating the degradation amount between a reference video frame and a degraded video frame in a state shifted from the matched state by a predetermined number of pixels and calculate a matching degree on the basis of the ratio between the first degradation amount and the second degradation amount. A matching information output unit (35) outputs the matching degree between the reference video and the degraded video after matching.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: January 10, 2012
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Jun Okamoto, Takaaki Kurita
  • Patent number: 8035812
    Abstract: A system and method for measuring display quality by using a hyperspectral imager are disclosed. In one embodiment, the system comprises a hyperspectral imager configured to determine an intensity of light for a plurality of locations in a first area on a display for a plurality of spectral channels, and a processor configured to determine a measure of display quality based on the determined intensities.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: October 11, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Hemang J Shah
  • Patent number: 7999852
    Abstract: Testing a display involves display of a series of test patterns, each at a different luminance or color, and with a predetermined minimum difference of luminance or color from their background, each pattern being unpredictable to a user, and determining if the user has correctly identified the patterns. This can enable a more objective test without needing external measuring equipment. Calibrating the display involves determining an output luminance level by detecting a minimal difference of drive signal to give a just noticeable output luminance difference at a given high luminance drive level, and determining an absolute luminance of the given high input luminance level from the minimal difference and from a predetermined human characteristic of visibility threshold of luminance changes. This can avoid the need for an external or internal sensor. This can be useful during conformance checks or during calibration of the display for example.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: August 16, 2011
    Assignee: Barco N.V.
    Inventors: Danny Deroo, Tom Kimpe