Hue Control Patents (Class 348/649)
  • Patent number: 10249260
    Abstract: An image enhancement method is provided, the method includes steps of converting grayscale values for each pixel of a preset image into a hue value, a color saturation value, and an intensity value for each pixel of the preset image; performing an enhancement process on the color saturation value for each pixel of the predetermined image; rectifying the color saturation value for each pixel of the preset image; and converting the post-rectified hue value, the post-rectified color saturation value, and the post-rectified intensity value for each pixel of the preset image into post-rectified grayscale values for each pixel of a preset image.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: April 2, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Junling Zhu, Hao Li, Shensian Syu
  • Patent number: 9973723
    Abstract: A method and system for adaptively mixing video components with graphics/UI components, where the video components and graphics/UI components may be of different types, e.g., different dynamic ranges (such as HDR, SDR) and/or color gamut (such as WCG). The mixing may result in a frame optimized for a display device's color space, ambient conditions, viewing distance and angle, etc., while accounting for characteristics of the received data. The methods include receiving video and graphics/UI elements, converting the video to HDR and/or WCG, performing statistical analysis of received data and any additional applicable rendering information, and assembling a video frame with the received components based on the statistical analysis. The assembled video frame may be matched to a color space and displayed. The video data and graphics/UI data may have or be adjusted to have the same white point and/or primaries.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 15, 2018
    Assignee: Apple Inc.
    Inventors: Haitao Guo, Kenneth I. Greenebaum, Guy Cote, David W. Singer, Alexandros Tourapis
  • Patent number: 9959604
    Abstract: The processing of RGB image data can be optimized by performing optimization operations on the image data when it is converted into the YCbCr color space. First, a raw RGB color space is converted into a YCbCr color space, and raw RGB image data is converted into YCbCr image data using the YCbCr color space. For each Y-layer of the YCbCr image data, a 2D LUT is generated. The YCbCr image data is converted into optimized CbCr image data using the 2D LUTs, and optimized YCbCr image data is generated by blending CbCr image data corresponding to multiple Y-layers. The optimized YCbCr image data is converted into sRGB image data, and a tone curve is applied to the sRGB image data to produce optimized sRGB image data.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 1, 2018
    Assignee: GoPro, Inc.
    Inventors: Ying Chen, Sumit Chawla, Elizabeth Torres Edwards, Kartheek Chandu, Bo Ding
  • Patent number: 9854136
    Abstract: There are provided a method and system for color correcting displays with different color gamuts. The method includes performing color correction on source picture content, using at least one of a non-reference type display having a non-reference color gamut and a reference type display having a reference color gamut. The performing step includes mastering the source picture content to provide mastered color corrected picture content for display on the reference type displays having a reference color gamut. The performing step further includes generating metadata for a subsequent inverse color gamut mapping that color transforms the mastered color corrected picture content for display on non-reference type displays having a non-reference color gamut. The subsequent inverse color gamut mapping is an inverse operation of a color gamut mapping applied during the color correction to obtain the mastered color corrected picture content for display on the reference type displays having the reference color gamut.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: December 26, 2017
    Assignee: THOMSON LICENSING DTV
    Inventors: Ingo Tobias Doser, Jurgen Stauder, Bongsun Lee
  • Patent number: 9723175
    Abstract: An image processing apparatus performs operations including: when a density value of a black component in uncorrected monochrome image data corresponding to each of pure colors including primary colors and secondary colors in color image data is lower than a reference density value, the uncorrected monochrome image data being obtained by a monochrome conversion from the color image data to monochrome image data, determining a correction content for correcting the density value of the black component in the uncorrected monochrome image data corresponding to at least each of the pure colors out of the pure colors and peripheral colors of the pure colors in a color space to a value equal to or higher than the reference density value; and obtaining corrected monochrome image data in which correction based on the determined correction content is reflected in the uncorrected monochrome image data.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 1, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Mitsuaki Ishitoya
  • Patent number: 9589370
    Abstract: The invention relates to a method for assisting with the search for an element (E) having a predefined hue in an environment, the method comprising the provision of at least one image in color, said or each image comprising pixels, the method being characterized in that the method comprises the selection in said or each image of the pixels having a hue for which value of the parameter associated through the bijection is comprised between first and second values, the first and second values being chosen so that the set of hues, for which value of the parameter associated through the bijection is comprised between both chosen values, comprises the predefined hue.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: March 7, 2017
    Assignee: THALES
    Inventors: Alain Le Meur, Olivier Koch
  • Patent number: 9489725
    Abstract: An apparatus generates pixel data in a display. RGB pixel data is received corresponding to a target pixel of an image. A local adaption level is determined for the RGB pixel data representing perceived brightness of the RGB pixel data. The local adaption level is modified to generate a modified local adaption level. A transfer curve is generated based on the modified local adaption level and the transfer curve is applied to the input RGB pixel data. A local dimming value is generated to drive a light source driver of the display based on RGB pixel data for each of the pixels in the local dimming block and RGBW pixel data for each of the pixels in the local dimming block.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 8, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Kyungjoon Kwon
  • Patent number: 9039199
    Abstract: A projector includes a light modulation part modulating light generated by a light source part, a video signal processing part processing a video signal to be input, and a projection optical system projecting the light modulated by the light modulation part onto an external projection target to obtain a projected video image. The video signal processing part includes a blue light effect alleviating part alleviating effects of blue light on retinas. In a case where among a red signal, a green signal, and a blue signal included in a video signal, only a ratio of the blue signal is high, the blue light effect alleviating part generates a blue light effect alleviating signal for controlling the light source part to reduce the brightness of the projected video image as a whole.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: May 26, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Katsumi Asakawa
  • Patent number: 9036087
    Abstract: A device for image processing includes a video signal receiver, for receiving at least one video signal, wherein an image frame of the at least one video signal includes: a plurality of pixel groups; a color engine; and an output stage, coupled to the color engine, for outputting the adjusted at least one video signal. The color engine includes: a local adjusting unit, configured to locally adjust at least one of color hue, luminance factor and saturation of a specific pixel group of the pixel groups without adjusting any other pixel group of the pixel groups, wherein the specific pixel group has color hue in a predetermined range that is a part of a full range of color hue; and a global adjusting unit, configured to globally adjust at least one of color hue, luminance factor and saturation of each of the pixels of the image frame.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: May 19, 2015
    Assignee: Novatek Microelctronics Corp.
    Inventors: Wei-Chen Su, Chung-Wen Hung
  • Patent number: 8947599
    Abstract: A system that adjusts chroma and luma values for a video signal is presented. During operation, the system receives a matrix of coefficients, which when applied to the chroma values and the luma values of a video signal produces substantially the same result as performing a sequence of discrete operations on the chroma values and the luma values, wherein the sequence of discrete operations includes one or more color-representation-conversion operations and one or more processing amplifier operations. For a given pixel of the video signal, the system performs a matrix-multiplication operation between a matrix representation of the chroma values and the luma values for the given pixel and the matrix of coefficients to produce a modified pixel.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: February 3, 2015
    Assignee: Apple Inc.
    Inventors: Samuel A. Figueroa, Jay D. Zipnick
  • Patent number: 8922667
    Abstract: In an image sensing apparatus adapted to apply user-settable image processing to a sensed image, display in an electronic viewfinder of an image to which a user-set image processing is applied and an image to which such image processing is not applied is switched with each passage of a predetermined period of time or in response to a user operation. Implementing a preview function with the electronic viewfinder image enables the user to check the results of the image processing in real time prior to actual image sensing by comparing the processed image and the original image to provide an easy-to-use preview function.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasufumi Oyama
  • Patent number: 8902367
    Abstract: A computer-readable storage medium storing an image processing program that causes a computer to execute a process includes, synthesizing, for each of frames included in a video image and to be processed, a synthesis image with an image of a synthesis target region existing in the frame by repeatedly executing a calculation using a Poisson's equation on the basis of the image of synthesis target region existing in the frame to be processed and the synthesis image to be replaced with the image of the synthesis target region, and thereby calculating, from an initial value image, a synthesis result image corresponding to a result obtained by synthesizing the synthesis image with the synthesis target region so as to sequentially execute a synthesis process on the frames of the video image; and setting, for each of the frames to be processed, initial values by setting, as the initial value image.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 2, 2014
    Assignee: Fujitsu Limited
    Inventors: Atsuko Tada, Ryoichi Funabashi, Ryuta Tanaka
  • Patent number: 8896706
    Abstract: A method for providing a mapping from apparent color to actual color for an image capture device including capturing an image of a reference color chart having a plurality of color patches using the image capture device, wherein each color patch has an associated reference color, measuring the apparent color of the plurality of color patches in the captured image, selecting a plurality of control points representing different hue values within a circular hue space, determining an angular offset for each control point such that the distance between a transformed apparent color and the reference color for each color patch is minimized, the angular offset representing a hue correction, wherein interpolation of the angular offsets for the control points provides a mapping from apparent color to actual color for the image capture device.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: November 25, 2014
    Assignee: LBT Innovations, Limited
    Inventors: Anton John van den Hengel, Rhys Ernst Hill
  • Patent number: 8860747
    Abstract: System and methods for gamut bounded saturation adaptive color enhancement are provided. Color enhancement incorporating gamut bounded saturation enhances colors of an pixel from a source color gamut such that the resulting color is within a target color gamut. This resulting color may, for example, take advantage of an expanded target color gamut of a display. Gamut bounded saturation may be implemented independently or in combination with RGB bounded saturation.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: October 14, 2014
    Assignee: Marvell World Trade Ltd.
    Inventors: Vasudev Bhaskaran, Sujith Srinivasan, Nikhil Balram
  • Patent number: 8824006
    Abstract: According to one embodiment, a color correction apparatus includes an input portion, a storing portion and a correction portion. The input portion inputs color image signals which correspond to recording color material amounts. The storing portion stores a standard color reproduction parameter for calculating a standard color reproduction chromaticity and reference chromaticity deviation amounts at a plurality of reference color points in recording color material amount coordinate space. The correction portion estimates chromaticity deviation amounts of the input color image signals on the basis of the reference chromaticity deviation amount, calculates a standard chromaticity which corresponds to the input color image signals on the basis of the standard color reproduction parameter and corrects the input color image signals on the basis of the estimated chromaticity deviation amounts and the standard chromaticity.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: September 2, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Takayuki Sawada, Naofumi Yamamoto
  • Publication number: 20140204274
    Abstract: A device for image processing includes a video signal receiver, for receiving at least one video signal, wherein an image frame of the at least one video signal includes: a plurality of pixel groups; a color engine; and an output stage, coupled to the color engine, for outputting the adjusted at least one video signal. The color engine includes: a local adjusting unit, configured to locally adjust at least one of color hue, luminance factor and saturation of a specific pixel group of the pixel groups without adjusting any other pixel group of the pixel groups, wherein the specific pixel group has color hue in a predetermined range that is a part of a full range of color hue; and a global adjusting unit, configured to globally adjust at least one of color hue, luminance factor and saturation of each of the pixels of the image frame.
    Type: Application
    Filed: March 26, 2014
    Publication date: July 24, 2014
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wei-Chen Su, Chung-Wen Hung
  • Publication number: 20140192219
    Abstract: An imaging device is provided which includes a hue value setting portion that sets at least one hue value from among a plurality of hue values, a color component region detection portion that detects a region having a color component that includes the set hue value, from image data of a photographic subject, and a color component region display portion that, based on the image data of the photographic subject, converts, of the photographic subject, the detected region having the color component to a first color, converts regions other than the detected region having the color component to a second color different from the first color, and displays the photographic subject on a display portion.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 10, 2014
    Applicant: Sony Corporation
    Inventor: Yohta ORIGUCHI
  • Patent number: 8724031
    Abstract: A device for image processing includes: a video signal receiver, for receiving at least one video signal; a color engine, comprising a local adjusting unit, for dividing pixels of an image frame of the at least one video signal into multiple pixel groups according to luminance factors of the pixels in HSI color space and adjusting the luminance factors of a specific pixel group of the pixel groups having luminance factors in a predetermined range that is a part of a full range of luminance factor by moving the pixels of the specific pixel group from a region to another region of the HSI color space without changing color axes of the HSI color space.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 13, 2014
    Assignee: Novatek Microelectronics Corp.
    Inventors: Wei-Chen Su, Chung-Wen Hung
  • Patent number: 8704952
    Abstract: A video decoder that separates and analyzes analog video signals includes a hue and saturation separator and a video signal determiner. The hue and saturation separator demodulates from a component video signal chroma signal, which includes a hue signal and a saturation signal. The video signal determiner determines at least one video signal characteristic of the component video signal dependent on the hue and saturation signal. The video signal determiner may include a mode determiner that determines the encoding standard of the video signal, and a color burst determiner that determines a location of a color burst signal with the video signal. The mode determiner may include a signal lock detector, a sequence matcher, and an encoding mode selector. The color burst determiner may include an absolute value determiner and a burst position determiner.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 22, 2014
    Assignee: STMicroelectronics International N.V.
    Inventor: Ravindranath Ramalingaiah Munnan
  • Patent number: 8698833
    Abstract: A color designation control device includes: an image acquisition section that acquires a color image; and a display control section that displays a user interface screen, which includes at least a preview image of the acquired color image and a hue scale representing a change in hue, on a predetermined display while accepting designation of a position or a region within the preview image, acquiring a hue at the designated position or in the designated region from the preview image, and adding a specific indication for a range within the hue scale corresponding to the acquired hue.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Kengo Anazawa
  • Patent number: 8659614
    Abstract: An image display apparatus adapted to display an image based on an image signal input includes: a color adjustment circuit adapted to perform one of a modification process and a correction process individually on a hue signal, a lightness signal, and a saturation signal included in first HLS signals as an image signal, and output the processed signals as second HLS signals.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: February 25, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Fumio Koyama
  • Publication number: 20130314604
    Abstract: A computer-readable storage medium storing an image processing program that causes a computer to execute a process includes, synthesizing, for each of frames included in a video image and to be processed, a synthesis image with an image of a synthesis target region existing in the frame by repeatedly executing a calculation using a Poisson's equation on the basis of the image of synthesis target region existing in the frame to be processed and the synthesis image to be replaced with the image of the synthesis target region, and thereby calculating, from an initial value image, a synthesis result image corresponding to a result obtained by synthesizing the synthesis image with the synthesis target region so as to sequentially execute a synthesis process on the frames of the video image; and setting, for each of the frames to be processed, initial values by setting, as the initial value image.
    Type: Application
    Filed: November 13, 2012
    Publication date: November 28, 2013
    Applicant: FUJITSU LIMITED
    Inventor: FUJITSU LIMITED
  • Patent number: 8564647
    Abstract: Color correction of an autostereoscopic color display capable of displaying multiple views of one scene. Multiple viewing regions of the autostereoscopic color display are identified. The multiple viewing regions together comprise the whole of an operating viewing zone for the autostereoscopic color display. A respective plurality of color correction LUTs are constructed. At least one color correction LUT is constructed for each different viewing region. Color correction LUTs corresponding to current viewing regions are selected based on information regarding viewer location. The selected color correction LUTs are applied to the autostereoscopic color display.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: October 22, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Siu-Kei Tin
  • Publication number: 20130265498
    Abstract: A projector includes a light modulation part modulating light generated by a light source part, a video signal processing part processing a video signal to be input, and a projection optical system projecting the light modulated by the light modulation part onto an external projection target to obtain a projected video image. The video signal processing part includes a blue light effect alleviating part alleviating effects of blue light on retinas. In a case where only a ratio of a blue signal included in the video signal is high, the blue light effect alleviating part performs control to reduce the brightness of the projected video image as a whole by reducing signal values of the blue signal, a green signal, and a red signal.
    Type: Application
    Filed: November 21, 2012
    Publication date: October 10, 2013
    Inventor: Katsumi ASAKAWA
  • Patent number: 8553134
    Abstract: An endoscope is provided having an imaging sensor, a focusing lens, and an image processor. The imaging sensor converts an optical image to an output image signal. The focusing lens focuses on an object. The image processor calculates a contrast value based on the image signal while the focusing lens moves to focus on an object, and in the case where the image processor detects a region in which the amount of variation in the contrast value is within a predetermined range, while the focusing lens moves in a close range around a focusing point the image processor processes at least one output image in which either the image has been cropped to exclude the region, an ornament has been added to the region, or the region has been softened.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: October 8, 2013
    Assignee: Pentax Ricoh Imaging Company, Ltd.
    Inventor: Saki Shimizu
  • Patent number: 8553154
    Abstract: An apparatus comprising a first circuit, a processing circuit and a conversion circuit. The first circuit may be configured to generate a first intermediate signal in a second format in response to an input signal in a first format. The processing circuit may be configured to generate a second intermediate signal and a third intermediate signal in response to the first intermediate signal. The conversion circuit may be configured to generate an output signal in the first format in response to the second intermediate signal and the third intermediate signal. The processing circuit may be configured to implement color blending on the second intermediate signal in the second format prior to conversion to the first format and pass the third intermediate signal without color blending.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: October 8, 2013
    Assignee: VIXS Systems, Inc
    Inventors: Hui Zhou, Christopher A. Aardema
  • Publication number: 20130201402
    Abstract: A device for image processing includes: a video signal receiver, for receiving at least one video signal; a color engine, comprising a local adjusting unit, for dividing pixels of an image frame of the at least one video signal into multiple pixel groups according to luminance factors of the pixels in HSI color space and adjusting the luminance factors of a specific pixel group of the pixel groups having luminance factors in a predetermined range that is a part of a full range of luminance factor by moving the pixels of the specific pixel group from a region to another region of the HSI color space without changing color axes of the HSI color space.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 8, 2013
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Novatek Microelectonics Corp.
  • Publication number: 20130194506
    Abstract: An apparatus for providing improved color intensity mapping may include a processor. The processor may be configured to divide color intensity value byte data into high priority portions and low priority portions distributed as constellation points in a constellation matrix and to provide separation between each of the constellation points by assigning a unique mapping code to a plurality of the constellation points.
    Type: Application
    Filed: January 28, 2013
    Publication date: August 1, 2013
    Applicant: CORE WIRELESS LICENSING S.A.R.L.
    Inventor: CORE WIRELESS LICENSING S.A.R.L.
  • Patent number: 8494723
    Abstract: A method for operating a vehicle display includes receiving from a user interface a request to modify a display screen of the vehicle display. In response to the received request to modify, the method can further include displaying a query on the display screen prompting an operator to choose a portion of the display screen that is to be modified. The method can further include receiving an input selection corresponding to a chosen portion of the display screen to be modified. The input selection can be received from the user interface into a control unit in communication with the vehicle display, which is in communication with the control unit. In response to the received input selection, the method can further include displaying an image on the chosen portion of the display screen in accordance with the received request to modify the display screen. A vehicle display system is also provided.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: July 23, 2013
    Assignees: Honda Motor Co., Ltd., Panasonic Corporation
    Inventors: Jason M. Strohmaier, Toshiyuki Yasuhara, Yuki Teramoto, Hiroaki Sakai
  • Patent number: 8493514
    Abstract: Disclosed is the apparatus for controlling color temperature enabling the color region determiner to determine whether the inputted chroma signal value in pixels belongs to a pre-set achromatic color region or a chromatic color region, and the color temperature corrector to correct the chroma signal gains according to the determined achromatic color region or chromatic color region.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 23, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yoon Seok Choi, Hun Cheol Lee, Hak Tae Kim
  • Patent number: 8477247
    Abstract: In some embodiments, color and contrast enhancement video processing may be done in one shot instead of adjusting one of color and contrast enhancement, then the other, and then going back to the first one to readjust because of the second adjustment. In some embodiments, global lightness adjustment, local contrast enhancement, and saturation enhancement may be done at the same time and in parallel. Lightness adjustment improves visibility of details for generally dark or generally light images without changing intended lighting conditions in the original shot, and is used to enhance the range of color/saturation enhancement. Local contrast enhancement done in parallel improves visual definition of objects and textures and thus local contrast and perceived sharpness.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 2, 2013
    Assignee: Intel Corporation
    Inventors: Abhijit Sarkar, Jorge E. Caviedes, Mahesh Subedar
  • Patent number: 8446488
    Abstract: A method of controlling a digital photographing device, the method including analyzing the color distribution of an input image, determining an enhancement color from the input image according to a predetermined criterion based on the analyzed color distribution, and enhancing the enhancement color in the input image. The predetermined criterion may be that a color distributed at a ratio higher than a predetermined ratio is determined as the enhancement color. The predetermined enhancement color may further depend on the focal length of the image.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyun-ock Yim
  • Publication number: 20130100351
    Abstract: A method and apparatus for reduced complexity video and image processing with special chroma handling are disclosed. Frame-type decisions are made on a video stream made up of a sequence of frames. A first subset of the frames are selected to be monochrome and generated without chroma data. A second subset of the frames are selected to be in color and generated with chroma components. In one embodiment, the first subset of frames includes odd frames and the second subset of frames includes even frames in the video stream. Under higher video frame rates, the lack of color in every other frame is not visible to the end viewer. Accordingly, subsequent processing of the output video stream permits luma-only processing of many frames in the video stream, extensively reducing the amount of computation.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 25, 2013
    Applicant: BROADCOM CORPORATION
    Inventor: Broadcom Corporation
  • Patent number: 8421924
    Abstract: An image processing method and its associated image processing circuit for processing an image based on a sequential couleur avec memoire (SECAM) system are provided. The image includes a first pixel, a second pixel and a third pixel, which are successively arranged in a same vertical line and are respectively corresponding to a first image signal and a second image signal and a third image signal. The image processing method includes steps of calculating a chroma signal via a vertical filtering process according to the first image signal, the second image signal and the third image signal; calculating a chroma angular frequency via a frequency modulation process according to the chroma signal; and generating a chromaticity according to the chroma angular frequency.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: April 16, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventor: Ming-Hao Liao
  • Patent number: 8421925
    Abstract: A display device and a color adjustment method thereof and a method for displaying video signals are provided. The display device includes a video signal receiver, a scaling engine, a color engine, an output stage, and a panel. The video signal receiver receives the video signals. The scaling engine is coupled to the video signal receiver to modulate the resolution of the video signal. The color engine is coupled to the scaling engine, which includes a local adjusting unit. The local adjusting unit adjusts hue, saturation, or intensity of a group of pixels, and thereby increase the quality of images. The output stage is coupled to the color engine, which outputs the adjusted video signals. The panel is coupled to the output stage, which displays the adjusted video signal.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: April 16, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Wei-Chen Su, Chung-Wen Hung
  • Patent number: 8384829
    Abstract: A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: February 26, 2013
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8284316
    Abstract: A real-time image processing circuit includes: a first converting unit for converting an input image frame into hue data, first saturation data and first luminance data; a saturation processing unit operable to adjust the first saturation data based on saturation mapping information to generate second saturation data corresponding to the input image frame and having a saturation distribution range larger than that of the first saturation data; a luminance processing unit operable to adjust the first luminance data based on luminance mapping information to generate second luminance data corresponding to the input image frame and having a luminance distribution range larger than that of the first luminance data; and a second converting unit for converting the hue data, the second saturation data and the second luminance data into an output image frame corresponding to the input image frame and outputting the output image frame.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: October 9, 2012
    Assignee: ILI Technology Corporation
    Inventors: Tsung-Hsi Chiang, Ching-Fang Hsiao
  • Patent number: 8285041
    Abstract: An image processing apparatus includes a histogram computing section which computes a histogram of pixel values of input image data. A gradation conversion characteristic determining section determines a gradation conversion characteristic in a case where gradation conversion processing is applied to the image data on the basis of the histogram computed by the histogram computing section, and photographing information when the image data has been picked up. A gradation converting section converts the gradation of the input image data on the basis of the gradation conversion characteristic determined by the gradation conversion characteristic determining section.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: October 9, 2012
    Assignee: Olympus Corporation
    Inventor: Tetsuya Toyoda
  • Patent number: 8265411
    Abstract: An image recording apparatus includes an imaging section which images a subject to obtain imaging data. An image quality information acquiring section acquires a plurality of sets of information concerning image quality. An image quality information converting section converts the plurality of sets of information concerning the image quality acquired in the image quality information acquiring section into image processing parameters used in image processing of the imaging data. An image processing section performs image processing with respect to the imaging data based on the image processing parameters converted by the image quality information converting section. A recording section records in a recording medium the imaging data subjected to image processing in the image processing section, or records in the recording medium the imaging data which is not yet subjected to image processing in the image processing section and the plurality of sets of information concerning the image quality.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 11, 2012
    Assignee: Olympus Corporation
    Inventor: Tetsuya Toyoda
  • Patent number: 8248431
    Abstract: An image processing apparatus is disclosed that includes an extraction unit extracting predetermined color areas from an input image, a calculation unit calculating each of representative colors of the extracted predetermined color areas, an evaluation unit evaluating whether hue values of the representative colors of the predetermined color areas are distributed in both directions from the hue value of a target color, and a color correcting unit, in which when it is determined that the hue values of the representative colors of the predetermined color areas are not distributed in both directions from the hue value of the target color, color correction is performed on the predetermined color areas.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: August 21, 2012
    Assignee: Ricoh Company Ltd.
    Inventor: Yasunobu Shirata
  • Publication number: 20120206655
    Abstract: Some embodiments provide a program that performs a color balance operation. The program identifies an image that includes several pixels. Each pixel includes a luma component value and chroma component values. The program analyzes the luma component values of the pixels in the image to identify several luma ranges. The program determines, for each luma range in the several luma ranges, a set of transforms for modifying chroma component values of pixels in the image in order to remove a color cast from the image. The program applies the sets of transforms to the image to remove the color casts from the image.
    Type: Application
    Filed: June 3, 2011
    Publication date: August 16, 2012
    Inventors: Daniel Pettigrew, Andrew Bryant, James C. Arndt, Olivier Fedkiw, Ryan A. Gallagher
  • Patent number: 8233098
    Abstract: A system (600) for performing gamut compression or gamut extension by transforming an input color (608) of an input image defined within a first gamut (102) into a reproduction color (610) of an output image for rendering by a reproduction device capable of rendering colors within a second gamut (104) different from the first gamut. The input color has an input chromaticity (C1) and an input lightness (Z-*) together forming an input point (202) in a chromaticity-lightness plane. The reproduction color has a reproduction point (210) in the chromaticity-lightness plane, wherein an absolute difference between the input lightness and the output lightness is a decreasing function of at least the chromaticity. An absolute difference between the input chromaticity and the output chromaticity is an increasing function of at least the chromaticity.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: July 31, 2012
    Assignee: TP Vision Holding B.V.
    Inventors: Remco Theodorus Johannes Muijs, Jiangtao Kuang
  • Patent number: 8228438
    Abstract: An image processing method is provided. An image signal is received and correspondingly converted to an original luminance value, an original first chroma value and an original second chroma value. The original luminance value is adjusted to a modulated luminance value. The modulated luminance value is larger than the original luminance value as the original luminance value is larger than a threshold. The modulated luminance value is less than the original luminance value as the original luminance value is less than the threshold. The original first and second chroma values are linearly adjusted to a modulated first chroma value and a modulated second chroma value according to an original vector between the original first and second chroma values and a white point in a color gamut. The modulated luminance value, the modulated first chroma value and the modulated second chroma value are reconverted to a modulated image signal.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: July 24, 2012
    Assignee: Wintek Corporation
    Inventors: Ching-Fu Hsu, Chih-Chang Lai, Jyun-Sian Li
  • Patent number: 8228340
    Abstract: A display apparatus includes: an image processor which processes image data; a display unit which displays an image based on the image data processed by the image processor; and a controller which controls the image processor to adjust at least one of a hue saturation and R, G and B gains of the image according to a color effect mode selected by a user among a plurality of preset color effect modes.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Mi-sook Jang
  • Publication number: 20120154683
    Abstract: A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a black-level shift amount holder, and a video signal generator.
    Type: Application
    Filed: October 17, 2011
    Publication date: June 21, 2012
    Applicant: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Publication number: 20120154682
    Abstract: A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator.
    Type: Application
    Filed: October 31, 2011
    Publication date: June 21, 2012
    Applicant: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8199172
    Abstract: A color adjustment method for a display device includes receiving a composite video signal including a first chrominance signal and a first luminance signal, generating a hue signal and a saturation signal according to at least the first chrominance signal, generating an intensity gain parameter according to the hue signal and the saturation signal, generating a saturation gain parameter according to the hue signal, generating a hue deviation parameter according to the hue signal, adjusting the first luminance signal according to the intensity gain parameter for generating a second luminance signal, and adjusting the first chrominance signal according to the hue deviation parameter and a mixed parameter generated according to the saturation gain parameter, for generating a second chrominance signal.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: June 12, 2012
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Chih-Chia Kuo
  • Patent number: 8194151
    Abstract: An image pickup apparatus is equipped with an image pickup device in which pixels coated with different color filters are arranged. Further, the image pickup apparatus includes a separation unit that separates a video signal outputted from the pixels coated with the different color filters into three color image signals; an adjustment signal generation unit for generating a color balance adjustment signal and a hue adjustment signal from the separated three color image signals; and an adjustment unit for adjusting the video signal outputted from the pixels coated with the different color filters by using the color balance adjustment signal and hue adjustment signal generated by the adjustment signal generation unit.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: June 5, 2012
    Assignee: Hitachi Kokusai Electric Inc.
    Inventor: Kazuhiro Tanabe
  • Patent number: 8179478
    Abstract: A system for adjusting color image quality includes converting color video signal sources into component video signals including a luminance signal and chrominance signals. A signal axis rotation circuit performs coordination transformation on the chrominance signals in accordance with a hue calibration parameter; and a multiplier multiplies the coordinate-transformed chrominance signals with a chroma calibration parameter to obtain output chrominance signals. The output chrominance signals and the luminance signal together form a component chrominance signal, which is applied to and output by a chrominance signal inverse conversion unit.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: May 15, 2012
    Assignee: Vastview Technology, Inc.
    Inventors: Cheng-Chung Peng, Yuhren Shen
  • Patent number: 8155438
    Abstract: A specific color-adjusting stage adjusts data of an inputted color with respect to a specific color. A total color-adjusting stage adjusts the data of the inputted color with respect to a total color. The specific color-adjusting stage and the total color-adjusting stage are provided in parallel. A composing unit composes linearly an output of the specific color-adjusting stage and an output of the total color-adjusting stage. When a degree that the total color-adjusting stage adjusts the data of the inputted color increases, then a degree that the specific color-adjusting stage adjusts the data of the inputted color decreases, and vice versa.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 10, 2012
    Assignee: Panasonic Corporation
    Inventors: Tsuyoshi Hirashima, Jun Ikeda, Shuichi Ojima, Ryouta Hata, Shinya Kiuchi