Chrominance Signal Amplitude Control (e.g., Saturation) Patents (Class 348/645)
  • Patent number: 10691321
    Abstract: A value of a display property of an affordance changes based a value of the same display property of the portion of content over which the affordance is displayed. The value of the display property of the affordance is constrained to vary within a second value range smaller than a first value range over which the value of the display property of the content is permitted to vary. A decrease of the value of the display property of the content causes an increase of the value of the display property of the affordance based on the magnitude of the value change for the content and the second value range. An increase of the value of the display property of the content causes a decreases of the value of the display property of the affordance based on a magnitude of the value change for the content and the second value range.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: June 23, 2020
    Assignee: APPLE INC.
    Inventors: Wan Si Wan, Chanaka G. Karunamuni, Marcos Alonso Ruiz, Bartosz Ciechanowski, Benjamin E. Nielsen
  • Patent number: 10666957
    Abstract: In general, techniques are described for processing high dynamic range (HDR) and wide color gamut (WCG) video data for video coding. A device comprising a memory and a processor may perform the techniques. The memory may store compacted fractional chromaticity coordinate (FCC) formatted video data. The processor may inverse compact the compacted FCC formatted video data using one or more inverse adaptive transfer functions (TFs) to obtain decompacted FCC formatted video data. The processor may next inverse adjust a chromaticity component of the decompacted FCC formatted video data based on a corresponding luminance component of the decompacted FCC formatted video data to obtain inverse adjusted FCC formatted video data. The processor may convert the chromaticity component of the inverse adjusted FCC formatted video data from the FCC format to a color representation format to obtain High Dynamic Range (HDR) and Wide Color Gamut (WCG) video data.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 26, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sungwon Lee, Joel Sole Rojals, Adarsh Krishnan Ramasubramonian, Dmytro Rusanovskyy, Done Bugdayci Sansli, Marta Karczewicz
  • Patent number: 10542296
    Abstract: Methods for the chroma reshaping of high-dynamic range (HDR) signals are presented. For each input pixel, a first scaler is generated based on the pixel luminance and a luma-based chroma reshaping (LCR) function. A second scaler is generated based on a saturation-based chroma reshaping (SCR) function and the saturation value of the pixel. A cascaded scaler is generated by multiplying the first scaler with the second scaler. Reshaped chroma values are generated by multiplying the input chroma values with the cascaded scaler. The characteristics of preferred LCR and SCR functions are discussed. Inverse decoding methods based on chroma-reshaping metadata that define the LCR and SCR functions are also described.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: January 21, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Taoran Lu, Fangjun Pu, Peng Yin, Tao Chen
  • Patent number: 10534524
    Abstract: A method and a device for providing content are provided. The device includes a display configured to display content, and an interface configured to receive a first input that selects a part of the displayed content, and a second input that requests to change a size of the displayed content. The device further includes a controller configured to control the display to display the selected part of the displayed content and an unselected part of the displayed content by changing a size of the selected part and a size of the unselected part to be different from each other, in response to the interface receiving the second input.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: January 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pil-seung Yang, Da-hye Park, Seol-hye Won, Young-ah Seong, Yong-gook Park, In-kuk Yun
  • Patent number: 10471053
    Abstract: Provided are methods for treatment of Fabry disease in patients having HEK assay amenable mutations in ?-galactosidase A. Certain methods comprise administering migalastat or a salt thereof every other day, such as administering about 150 mg of migalastat hydrochloride every other day.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 12, 2019
    Assignee: Amicus Therapeutics, Inc.
    Inventors: Jeff Castelli, Elfrida Benjamin
  • Patent number: 10425592
    Abstract: Observation in which the properties of a detection element are utilized is performed. Provided is a detection device including: a detector that has a linear response characteristic, in which an output signal changes linearly, and a nonlinear response characteristic, in which the output signal changes nonlinearly, and that detects light from a sample and outputs the output signal in accordance with the intensity of the light; a light detection circuit that is capable of switching between a first amplification factor and a second amplification factor, the light detection circuit amplifying the output signal output from the detector based on the first amplification factor or the second amplification factor so as to generate a brightness signal; and an input unit with which a user is allowed to switch the amplification factor for the output signal to be used between the first amplification factor and the second amplification factor.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: September 24, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Akinori Araya
  • Patent number: 10417976
    Abstract: A pixel rendering method and a pixel rendering device are disclosed. The method includes obtaining a grayscale value of a red, green, and blue (RGB) primary color weight of each pixel in an original image and converting the grayscale value into RGBW luminance values; determining a display mode of a pending pixel to be a text display mode or an image display mode; rendering the pending pixel based on the text display mode if the display mode of the pending pixel is on the text display mode; otherwise, rendering the pending pixel on the image display mode.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: September 17, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Biao Pan
  • Patent number: 10397585
    Abstract: In general, techniques are described for processing high dynamic range (HDR) and wide color gamut (WCG) video data for video coding. A device comprising a memory and a processor may perform the techniques. The memory may store compacted fractional chromaticity coordinate (FCC) formatted video data. The processor may inverse compact the compacted FCC formatted video data using one or more inverse adaptive transfer functions (TFs) to obtain decompacted FCC formatted video data. The processor may next inverse adjust a chromaticity component of the decompacted FCC formatted video data based on a corresponding luminance component of the decompacted FCC formatted video data to obtain inverse adjusted FCC formatted video data. The processor may convert the chromaticity component of the inverse adjusted FCC formatted video data from the FCC format to a color representation format to obtain High Dynamic Range (HDR) and Wide Color Gamut (WCG) video data.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: August 27, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sungwon Lee, Joel Sole Rojals, Adarsh Krishnan Ramasubramonian, Dmytro Rusanovskyy, Done Bugdayci Sansli, Marta Karczewicz
  • Patent number: 10393669
    Abstract: The present disclosure relates to an apparatus for measuring a color parameter of a gemstone. The apparatus comprises a support structure for supporting the gemstone at a measurement location, an illumination system for illuminating the gemstone at the measurement location, an imaging device directed towards the measurement location for obtaining an image of the gemstone, and an image processor for analyzing the image of the gemstone. The image processor is configured to identify a set of stone pixels corresponding to the gemstone in the image and identify luminance and chrominance values for each stone pixel. A color vector is calculated from an expression of the chrominance values of the stone pixels in chrominance space, the color vector extending in chrominance space from stone pixels having a relatively high luminance value to stone pixels having a relatively low luminance value. This color vector is used in the determination of the color parameter.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: August 27, 2019
    Assignee: De Beers UK Ltd
    Inventor: Alistair Fitch
  • Patent number: 10313687
    Abstract: Because we needed a new color saturation processing in tune with dynamic range transformations necessary for handling the recently introduced high dynamic range image encoding, we describe a color saturation modification apparatus (101) arranged to determine linear color differences (R-Y,G-Y,B-Y) on the basis of an input color (R,G,B) and a luminance (Y) of the input color, and to do a multiplication of the linear color differences (R-Y,G-Y,B-Y) with a gain (g), characterized in that the apparatus is arranged to determine the gain as a function of a difference value (V_in-Y) being defined as the value of the highest one of the linear color differences (R-Y,G-Y,B-Y).
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: June 4, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Jeroen Hubert Christoffel Jacobus Stessen
  • Patent number: 10284785
    Abstract: Systems and methods are disclosed for image signal processing. For example, methods may include receiving an image from an image sensor; applying a filter to the image to obtain a low-frequency component image and a high-frequency component image; determining a first enhanced image based on a weighted sum of the low-frequency component image and the high-frequency component image, where the high-frequency component image is weighted more than the low-frequency component image; determining a second enhanced image based on the first enhanced image and a tone mapping; and storing, displaying, or transmitting an output image based on the second enhanced image.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: May 7, 2019
    Assignee: GoPro, Inc.
    Inventors: Guillaume Matthieu Guerin, Antoine Regimbeau, Thomas Nicolas Emmanuel Veit, Bruno Cesar Douady-Pleven, Violaine Marie Mong-lan Sudret
  • Patent number: 10163410
    Abstract: A driving method for an image display apparatus which includes an image display panel having a plurality of pixels arrayed in a two-dimensional matrix and each configured from a first subpixel for displaying a first primary color, a second subpixel for displaying a second primary color, a third subpixel for displaying a third primary color and a fourth subpixel for displaying a fourth color, and a signal processing section. The signal processing section is capable of calculating a first subpixel output signal, a second subpixel output signal, a third subpixel output signal, and a fourth subpixel output signal. The driving method includes a step of calculating a maximum value (Vmax(S)) of brightness, a saturation (S) and brightness (V(S)), and determining the expansion coefficient (?0).
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: December 25, 2018
    Assignee: JAPAN DISPLAY INC.
    Inventors: Masaaki Kabe, Amane Higashi, Yasuo Takahashi, Akira Sakaigawa
  • Patent number: 10152928
    Abstract: An image display apparatus includes: an image display section in which a first sub-pixel for displaying a first primary color, a second sub-pixel for displaying a second primary color, a third sub-pixel for displaying a third primary color, and a fourth sub-pixel for displaying a fourth color are arranged in a 2D matrix; and a signal generation section to generate a signal for driving the image display section based on a first input image signal for displaying the first primary color, a second input image signal for displaying the second primary color, and a third input image signal for displaying the third primary color, that are supplied in correspondence with pixels of an image to be displayed, the signal generation section carries out processing of decreasing chroma and generates signals for driving the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel based on those signals.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 11, 2018
    Assignee: SONY CORPORATION
    Inventors: Yohei Funatsu, Hidehisa Shimizu
  • Patent number: 9945724
    Abstract: A method and a device for determining a yellowish level of a screen caused by pressing are provided. The method includes: acquiring chromaticity coordinates of a plurality of test points of the screen during a pressing test; processing the acquired chromaticity coordinates, so as to acquire a chromatic aberration between the test point with a maximum value of X or a maximum value of Y in the chromaticity coordinates and the test point with a minimum value of X or a minimum value of Y in the chromaticity coordinates; and comparing the chromatic aberration with a predetermined standard chromatic aberration, so as to determine whether the screen is qualified after the pressing test.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 17, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Gang Yang
  • Patent number: 9894313
    Abstract: A video signal processing method includes: dividing a current frame which is to be processed into a plurality of blocks which are predetermined rectangular blocks; calculating, for each of the plurality of blocks divided into in the dividing, a feature quantity relating to luminance of pixels in the block; calculating first correction data, based on a feature quantity calculated from each of first blocks located above a first horizontal boundary in the current frame and a feature quantity calculated from each of one or more blocks located below a first horizontal boundary in a previous frame which has been processed immediately before the current frame; and correcting luminance of pixels in each of the first blocks in the current frame, based on the first correction data calculated in the calculating.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: February 13, 2018
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 9865191
    Abstract: An image processing device comprising: a conversion unit to receive a first input signal including first color information, a first color being reproduced at pixels on the basis of the first color information, the first input signal including first color information obtained from an input image signal corresponding to a red component, a green component and a blue component, to specify saturation of the first color, and configured to obtain luminance attenuation ratio on the basis of a relationship previously stored between saturation and luminance attenuation ratio, and the saturation of the first color, and to output a second input signal including second color information whose luminance is decreased from the first color information on the basis of the luminance attenuation ratio corresponding to the first color information; and a signal processing unit configured to output an output signal for driving the pixels on the basis of the second input signal.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: January 9, 2018
    Assignee: Japan Display Inc.
    Inventors: Tatsuya Yata, Takayuki Nakanishi
  • Patent number: 9736466
    Abstract: System and method for video processing. First video levels for pixels for a left image of a stereo image pair are received from a GPU. Gamma corrected video levels (g-levels) are generated via a gamma look-up table (LUT) based on the first video levels. Outputs of the gamma LUT are constrained by minimum and/or maximum values, thereby excluding values for which corresponding post-OD display luminance values differ from static display luminance values by more than a specified error. Overdriven video levels are generated via a left OD LUT based on the g-levels. The overdriven video levels correspond to display luminance values that differ from corresponding static display luminance values by less than the error threshold, and are provided to a display device for display of the left image. This process is repeated for second video levels for a right image of the stereo image pair, using a right OD LUT.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: August 15, 2017
    Assignee: zSpace, Inc.
    Inventor: Mark F. Flynn
  • Patent number: 9681109
    Abstract: Exemplary embodiments are directed to configurable demodulation of image data produced by an image sensor. In some aspects, a method includes receiving information indicating a configuration of the image sensor. In some aspects, the information may indicate a configuration of sensor elements and/or corresponding color filters for the sensor elements. A modulation function may then be generated based on the information. In some aspects, the method also includes demodulating the image data based on the generated modulation function to determine chrominance and luminance components of the image data, and generating the second image based on the determined chrominance and luminance components.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: June 13, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hasib Ahmed Siddiqui, Kalin Mitkov Atanassov, Sergiu Radu Goma
  • Patent number: 9570040
    Abstract: A display device includes a color transformer and an image controller. The color transformer receives and transforms a three-color image into a four-color image. The four-color image includes a red image, a green image, a blue image, and a white image. The image controller calculates decrement offsets of the red image, the green image, and the blue image, and a compensation value of the white image. The image controller calculates gray level values of the red image, the green image, and the blue image when a value of the white image is zero. The image controller respectively calculates a red image control signal, a green image control signal, and a blue image control signal based on the gray level values and the decrement offsets, and the image controller calculates a white image control signal based on the gray level values and the compensation value of the white image.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: February 14, 2017
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Hsueh-Yen Yang, Hong-Shen Lin
  • Patent number: 9549175
    Abstract: Systems and methods for analyzing the performance of a digital network include capturing a stream of digital data, e.g., internet protocol (IP) packets, that represent streaming video, identifying which of the IP packets include bit errors, determining to which of a plurality of pixels the IP packets including bit errors belong and identifying such pixels as corrupted pixels, and illuminating only the corrupted pixels on a display of a tool. Corrupted pixels in different time blocks can be displayed with different colors to gain a better appreciation of the bit error rate over time.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 17, 2017
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: David John Boyes, John Garfield Williams
  • Patent number: 9478173
    Abstract: The techniques of this disclosure are applicable to backlight display devices. For such devices, the backlight may have different backlight intensity settings in order to promote power conservation. The techniques of this disclosure may apply different adjustments to the display, depending on the backlight intensity setting. In one example, different color correction matrices may be applied for different backlight settings in order to achieve desirable adjustments in the device at the different backlight settings. The adjustments described herein may address chrominance shifts due to different backlight settings as well as cross-talk between color channels. The techniques may also be applicable to organic light emitting diode (OLED) displays that have different luminance settings, and some described techniques may be applicable to displays that have static or fixed luminance output.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: October 25, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Reza Safaee-Rad, Min Dai, Milivoje Aleksic
  • Patent number: 9363522
    Abstract: A specification defining allowable luma and chroma code-values is applied in a region-of-interest encoding method of a mezzanine compression process. The method may include analyzing an input image to determine regions or areas within each image frame that contain code-values that are near allowable limits as specified by the specification. In addition, the region-of-interest method may comprise then compressing those regions with higher precision than the other regions of the image that do not have code-values that are close to the legal limits.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: June 7, 2016
    Assignee: WARNER BROS. ENTERTAINMENT, INC.
    Inventors: Michael Smith, Bradley Collar
  • Patent number: 9355614
    Abstract: This embodiment herein relates to an image quality processing method and a display device using the same which decrease a hardware processing load of the display device and improve both a contrast ratio and sharpness of edges in an image.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: May 31, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Kiltae Kim
  • Patent number: 9224363
    Abstract: Image data is transformed for display on a target display. A sigmoidal transfer function provides a free parameter controlling min-tone contrast. The transfer function may be dynamically adjusted to accommodate changing ambient lighting conditions. The transformation may be selected so as to automatically adapt image data for display on a target display in a way that substantially preserves creative intent embodied in the image data. The image data may be video data.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 29, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Anders Ballestad, Andrey Kostin, Gregory John Ward
  • Patent number: 9110522
    Abstract: Provided is an input signal converting device, including a device input receiving unit configured to receive an input signal from an input device, and extract a type of the input device from which the received input signal is generated and an input event corresponding to the input signal, an input event converting unit configured to obtain an output event in a corresponding user terminal and a type of a user terminal corresponding to the extracted input device type and input event, and a device input transmitting unit configured to generate an output signal corresponding to the output event to be output to the user terminal, and deliver the generated output signal to the user terminal.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: August 18, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kang-Woon Hong, Chang-Woo Yoon
  • Patent number: 9049408
    Abstract: A method of color processing determines whether a pixel color is within at least one range of predetermined colors corresponding to a viewer expected color. If so, the method altering the pixel color to better approximate the viewer expected color. For detection of skin tones determining whether the pixel color is within a range of predetermined colors includes discounting an illuminant of the pixel color. The viewer expected colors are preferably skin tone, grass green and sky blue. The saturation level of grass green and sky blue are enhanced and that of skin tones are suppressed. The saturation s is limited based upon lightness J and hue h to convert to an allowable RGB color format range.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: June 2, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Shereef Shehata, Weider Peter Chang
  • Patent number: 9014504
    Abstract: Image sensors have finite ranges of illuminance that may be captured. When the sensors for particular pixels receive an amount of light exceeding these finite ranges, the pixel values clip to the maximum pixel value. Systems and methods for estimating pixel values that are clipped or near clipping are provided. In one example, a method for processing image data includes determining that a first channel of the image data is saturated or near saturation. The method further includes computing a highlight recovery value for the first channel based upon alternative channels in the image data that are not saturated or near saturation. The highlight recovery value is applied to the first channel.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 21, 2015
    Assignee: Apple Inc.
    Inventors: Suk Hwan Lim, David Hayward, D. Amnon Silverstein
  • Publication number: 20150098023
    Abstract: A method for determining a chroma gain for a modulated chroma signal, comprises the steps: receiving the modulated chroma signal; generating a first chroma gain as a function of a color burst of the received modulated chroma signal; generating a second chroma gain as a function of a peak amplitude of the modulated chroma signal; and determining a final chroma gain for the received modulated chroma signal as a function of the first generated chroma gain and the second generated chroma gain, wherein the determined chroma gain is applied on the modulated chroma signal.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Amlogic Co., Ltd.
    Inventors: Dongjian Wang, Wei Zhuang, Xuyun Chen
  • Patent number: 8913183
    Abstract: A video projector, a cluster of video projectors and a method for wirelessly transmitting image data within the cluster of video projectors. The video projector includes a first antenna located at a first side of the projector and a second antenna located at a second side of the projector, opposite to the first side. Image data is divided into sub-parts, and distributed by assigning each image data sub-part to a video projector. A video projector receiving image data sub-parts extracts and stores the image data sub-part assigned to it, and retransmits image data sub-parts assigned to respectively a second and third video projectors.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: December 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Laurent Frouin, Lionel Tocze, Pierre Visa
  • 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: 8861851
    Abstract: Methods and apparatus may be applied to reconstruct pixel values in saturated regions of an image. Saturated regions are identified and hues for pixels in the saturated regions are estimated based on hues in boundaries of the saturated regions. Gradients for pixel values in saturated color channels within the saturated region may be estimated based on known gradients for non-saturated color channels. Reconstructed pixel values may be derived from the estimated gradients. The methods and apparatus may be applied in conjunction with dynamic range expansion.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: October 14, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Wolfgang Heidrich, Mushfiqur Rouf
  • Patent number: 8861950
    Abstract: A determination unit determines a weighting coefficient for a second light metering area corresponding to a focus detection area at which a second defocus amount having an absolute value larger than an absolute value of a first defocus amount is acquired relatively smaller than a weighting coefficient for a first light metering area corresponding to a focus detection area at which a first defocus amount is acquired, and changes a difference between the weighting coefficient for the first light metering area and the weighting coefficient for the second light metering area based on a plurality of defocus amounts including the defocus amount of the focus detection area not corresponding to the first light metering area and the second light metering area.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 14, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kimihiro Masuyama
  • 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: 20140198256
    Abstract: An image processing apparatus for processing multiple sets of first image data of an image in a first color space is provided. The first color space is defined by multiple color components excluding a saturation component. The image processing apparatus includes a converting module, a gain determining module and an adjusting module. The converting module converts the multiple sets of first image data to multiple sets of image data in a second color space. The second color space is defined by multiple second color components including the saturation component. The gain determining module determines a saturation gain according to a part of the multiple sets of second data associated with the saturation component. The adjusting module adjusts the image according to the saturation gain.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventor: Te-Wei Hsu
  • 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: 8659709
    Abstract: An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU 30) determines a first chromaticity change amount stored in memory (31) on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED (17) up to a present time, the cumulative value having been measured by a counter (32), and the correction processing part also determines a second chromaticity change amount stored in the memory (31) on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED (17) up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU 30), the cumulative value having been measured by the counter (32).
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: February 25, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tohru Hanaoka, Fumio Kokubo, Eiji Kurimoto, Ryoji Ishimura, Shota Inoue, Fumiaki Yamada
  • 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
  • Patent number: 8648968
    Abstract: A saturation adjusting apparatus for processing a pixel, which has three color components each having a value falling within a range defined by upper and lower extreme values, of a RGB color model includes an extreme value controller and a component adjuster. The extreme value controller determines maximum and minimum extreme value thresholds for ensuring that the values of the color components of the pixel after undergoing linear color correction processing based on a correction indicator fall within the range defined by the upper and lower extreme values. The component adjuster includes a decision-making unit for choosing the correction indicator from a group of values which includes the maximum extreme value threshold, the minimum extreme value threshold, and a saturation setting. The component adjuster further includes a color corrector for performing linear color correction processing on the three color components of the pixel using the correction indicator.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: February 11, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Li-Cong Hou, Dong-Yu He, Hong-Hai Dai
  • Patent number: 8611654
    Abstract: Systems and methods are presented for generating a new digital output image by blending a plurality of digital input images capturing the same scene at different levels of exposure. Each new pixel for the new digital output image is derived from a group of corresponding aligned pixels from the digital input images. For each group of corresponding pixels from the digital input images, an average color value in a first color space is derived by taking a separate average across each color channel of the first color space. The resulting average color value in the first color space is modified in order to raise its corresponding color saturation value in a second color space. The new pixel's color value in the first color space is set to the modified average color value.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: December 17, 2013
    Assignee: Adobe Systems Incorporated
    Inventor: Vikas Yadav
  • Publication number: 20130321679
    Abstract: Image sensors have finite ranges of illuminance that may be captured. When the sensors for particular pixels receive an amount of light exceeding these finite ranges, the pixel values clip to the maximum pixel value. Systems and methods for estimating pixel values that are clipped or near clipping are provided. In one example, a method for processing image data includes determining that a first channel of the image data is saturated or near saturation. The method further includes computing a highlight recovery value for the first channel based upon alternative channels in the image data that are not saturated or near saturation. The highlight recovery value is applied to the first channel.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Applicant: APPLE INC.
    Inventors: Suk Hwan Lim, David Hayward, D. Amnon Silverstein
  • 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
  • Patent number: 8547483
    Abstract: An image processing method includes receiving an image data including a first pixel, a second pixel and a third pixel, the second pixel being between the first pixel and the third pixel; calculating a difference between two initial chrominance values of the first pixel and two initial chrominance values of the second pixel to determine a first difference, and calculating a difference between the two initial chrominance values of the second pixel and two initial chrominance values of the third pixel to determine a second difference; comparing the first difference with the second difference to select either the first pixel or the third pixel as a target pixel; and determining two adjusted chrominance values of the second pixel according to at least two initial chrominance values of the target pixel.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: October 1, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Mei-Ju Chen, Jen-Shi Wu, Wei-Kuo Lee
  • Patent number: 8542420
    Abstract: Certain embodiments provide an image reading apparatus including: a monochrome CCD sensor including a first photo-diode array; plural color CCD sensors each including a second photodiode array; an AD converter configured to apply analog-to-digital conversion to each of analog outputs from the second photodiode array and the first photodiode array; a delay processing unit configured to delay at least one of color image data of plural colors from the AD converter and interpolate, with delayed any one or more of the color image data, a blank of image data that is to be read on a line in a sub-scanning direction; and an inter-line correction unit configured to correct, by the intervals and a set reduction magnification, a positional deviation in the sub-scanning direction between the monochrome image data and the color image data, respective timings of which are aligned on the line by the delay processing unit.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 24, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Shogo Ogawa, Yoshio Yoshimura, Tadashi Mokudai
  • Patent number: 8537177
    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: June 15, 2010
    Date of Patent: September 17, 2013
    Assignee: Marvell World Trade Ltd.
    Inventors: Vasudev Bhaskaran, Sujith Srinivasan, Nikhil Balram
  • Publication number: 20130235273
    Abstract: The optical performance is enhanced of display systems that use field sequential color and pulse width modulation to generate color and color gray scale values. Such enhancement may be achieved by various data encoding methods disclosed herein that may include temporal redistribution of bit values to mitigate color motional artifacts associated with field sequential color-based display systems, selective combination of intensity modulation, pulse width modulation, and/or the noncontiguous sequencing of primary colors. There is further an intelligent real-time dynamic manipulation of gray scale values in portions of an image that are computationally determined to be images of objects moving against a global background, so as to temporally front load or concentrate the bits comprising such moving objects and thereby further mitigate said motional artifacts using both actual and virtual aggregate pulse truncation across all primary colors being modulated.
    Type: Application
    Filed: February 21, 2013
    Publication date: September 12, 2013
    Applicant: Rambus Delaware LLC
    Inventors: Daniel K. Van Ostrand, Carey King, Berry Tod Cox
  • Patent number: 8421818
    Abstract: A signal processing device (200) included in a display which has a color reproduction range larger than that of the input device.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: April 16, 2013
    Assignee: Sanyo Electric Co., Ltd
    Inventors: Takaaki Abe, Masutaka Inoue
  • Patent number: 8379153
    Abstract: In the video signal processing device, the first color space converting section performs color space conversion on an input video signal, to generate a converted video signal configured of H, S and V signals. The first high-frequency separating section separates a high-frequency component from the luminance signal in the input video signal, to generate high-frequency luminance signals. The combining section performs a combining process based on the V signal or the S signal or both, and the high-frequency luminance signal, to generate a combined V signal or a combined S signal or both. The second color space converting section performs color space conversion on a video signal, configured of the H signal, the S signal or the combined S signal, and the V signal or the combined V signal, to generate an output video signal defined in RGB color space.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: February 19, 2013
    Assignee: Sony Corporation
    Inventor: Toshinobu Isobe
  • Patent number: 8355566
    Abstract: A computerized device for converting a color image data, indicative of a plurality of color image regions defining a two-dimensional color image, into a grayscale image data indicative of a plurality of grayscale image regions defining a two-dimensional grayscale image, with each of the color image regions corresponding to one of the grayscale image regions. A luminance information and a two-dimensional chromatic information is associated with each of the color image regions. The device includes a processor and a memory store. The memory store is adapted to store a program executable by the processor so as to perform the following steps: determining a principal chromatic component of each of the color image regions; determining a first correlation value; and generating the grayscale image data by reference to the first correlation value.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: January 15, 2013
    Assignee: Hong Kong Baptist University
    Inventor: Michael K. P. Ng
  • Patent number: 8340410
    Abstract: The intelligent saturation controller calculates the exact maximum saturation any valid YCbCr pixel can undergo before it becomes invalid in ROB space. The controller models the saturation operation in RGB color space and calculates the maximum saturation level at which the RGB values falls outside the valid range. The saturation operation is performed independently for every pixel of the incoming video frame and ensures that each output pixel is a valid. The controller finds the maximum saturation for each input pixel and checks whether it is less than the input saturation factor. If so, then this calculated maximum saturation value is applied. If not, the input saturation factor is applied. Accordingly, the output RGB pixels are valid and no clamping is necessary if no other video processing is done in YCbCr space. Increasing the saturation of the video signal results in a more vivid and more colorful picture.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 25, 2012
    Assignee: Marvell International Ltd.
    Inventors: Sujith Srinivasan, Nikhil Balram
  • Patent number: 8334876
    Abstract: A signal processing device including: a color coordinate adjuster performing color coordinate adjustment processing for adjusting color coordinates of an image input signal according to a color reproduction range of a display device; a brightness adjuster performing brightness adjustment processing for adjusting a brightness component of the image input signal; and a coefficient controller controlling a color coordinate adjustment coefficient and a brightness adjustment coefficient. The coefficient controller controls the brightness adjustment coefficient so as to decrease the brightness component of the image input signal, when saturation of a pixel having a first hue is high, controls the brightness adjustment coefficient so as to increase the brightness component of the image input signal, when saturation of a pixel having a second hue is high, and decreases the brightness adjustment coefficient when increasing the color coordinate adjustment coefficient.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: December 18, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takaaki Abe, Masutaka Inoue