Contrast Patents (Class 345/617)
  • Patent number: 10165218
    Abstract: A method includes identifying an optimal backlight value for at least one quality level of a first video segment. The method also includes transmitting data for the first video segment. The transmitted data for the first video segment includes a message containing a first set of display adaptation information. The first set of display adaptation information includes the optimal backlight value for the at least one quality level of the first video segment. The method further includes identifying a backlight value for the at least one quality level of a second video segment. The method also includes determining a maximum backlight value change threshold between successive video segments. In addition, the method includes applying temporal smoothing between the optimal backlight value and the backlight value based on the maximum backlight value change threshold.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: December 25, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Felix Carlos Fernandes, Esmaeil Faramarzi, Xin Li, Anshuman Tewari, Youngkwon Lim, Sungoh Hwang
  • Patent number: 10140694
    Abstract: An image display apparatus includes a display, an image receiver to receive a high dynamic range image, and a controller to set luminance information of an image to be displayed based on brightness information of the high dynamic range image and information about a luminance that is displayable on the display and to perform control to display an image having a luminance adjusted based on the set image luminance information. Accordingly, the image display apparatus is capable of converting and displaying the high dynamic range image so as to match the luminance that is displayable on the display.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 27, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyeongryeol Park, Jeonghyu Yang, Hansoo Kim, Seungjong Choi
  • Patent number: 10013764
    Abstract: Certain aspects relate to systems and techniques for performing local intensity equalization on images in a set of images exhibiting local intensity variations. For example, the local intensity equalization can be used to perform accurate region matching and alignment of the images. The images can be partitioned into regions of pixel blocks, for instance based on location, shape, and size of identified keypoints in the images. Regions depicting the same feature in the images can be equalized with respect to intensity. Region matching based on the keypoints in the intensity-equalized regions can be performed with accuracy even in images captured by asymmetric sensors or exhibiting spatially varying intensity.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: July 3, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Kalin Mitkov Atanassov, James Wilson Nash, Stephen Michael Verrall, Hasib Ahmed Siddiqui
  • Patent number: 9955084
    Abstract: According to some embodiments, a camera captures a plurality of images of substantially the same scene at different exposure levels for each video frame to be captured. These images are then merged or fused and processed using a spatially, and optionally also temporally, varying tonemapping operator, and the resulting image after some further finishing is written into a video stream. In some embodiments, this processing is performed in real time on a graphics processing unit present in the device containing the camera.
    Type: Grant
    Filed: May 17, 2014
    Date of Patent: April 24, 2018
    Inventor: Oliver Markus Haynold
  • Patent number: 9922411
    Abstract: Systems and methods are disclosed for weighting the image quality prediction of any visual-attention-agnostic quality metric with a saliency map. By accounting for the salient regions of an image or video frame, the disclosed systems and methods may dramatically improve the precision of the visual-attention-agnostic quality metric during image or video quality assessment. In one implementation, a method of saliency-weighted video quality assessment includes: determining a per-pixel image quality vector of an encoded video frame; determining per-pixel saliency values of the encoded video frame or a reference video frame corresponding to the encoded video frame; and computing a saliency-weighted image quality metric of the encoded video frame by weighting the per-pixel image quality vector using the per-pixel saliency values.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 20, 2018
    Assignee: Disney Enterprises, Inc.
    Inventors: Tunc Ozan Aydin, Nikolce Stefanoski, Aljoscha Smolic, Mark Arana
  • Patent number: 9741099
    Abstract: Systems and methods for local tone mapping are provided. In one example, an electronic device includes an electronic display, an imaging device, and an image signal processor. The electronic display may display images of a first bit depth, and the imaging device may include an image sensor that obtains image data of a higher bit depth than the first bit depth. The image signal processor may process the image data, and may include local tone mapping logic that may apply a spatially varying local tone curve to a pixel of the image data to preserve local contrast when displayed on the display. The local tone mapping logic may smooth the local tone curve applied to the intensity difference between the pixel and another nearby pixel exceeds a threshold.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: August 22, 2017
    Assignee: APPLE INC.
    Inventors: Suk Hwan Lim, D. Amnon Silverstein, Guy Cote, Steven David Hordley, Graham Finlayson, Weichun Ku, Joseph P. Bratt
  • Patent number: 9646559
    Abstract: A display device including a panel having a display area and first, second, third and fourth non-display areas formed at an outer portion of the display area, said first non-display area facing the second non-display area, and the third non-display area facing the fourth non-display area; a data driver disposed in the first non-display area, and configured to drive a plurality of data lines provided in a first direction in the display area; a gate driver disposed in the second non-display area and configured to drive a plurality of gate lines provided in a second direction vertical to the first direction in the display area; a timing controller configured to drive the data driver and the gate driver; and a plurality of link lines in the display area and extending from the gate driver and provided in parallel to the data lines respectively connected to the gate lines.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: May 9, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Woong Ki Min, Heum Seok Baek, Mi Young Son, Ho June Kim, Yoon San Park, Sung Gon Park
  • Patent number: 9615030
    Abstract: The luminance information of an image captured by a multi-lens camera system can be improved by selecting a luminance information source for each portion of the captured image. Each lens of the camera system can capture an initial image. For each portion of a final image, a corresponding initial image portion can be selected as the luminance information source. The portions of the final image and initial images can be pixels, groups of pixels, or other image portions. The luminance information from the selected initial image portions is combined to form final image luminance information. Chrominance information can also be selected from the initial images to form final image chrominance information, and the final image chrominance information and the final image luminance information can be combined to form a final image.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: April 4, 2017
    Assignee: LinX Computational Imaging Ltd.
    Inventors: Ziv Attar, Chen Aharon-Attar
  • Patent number: 9489722
    Abstract: A method for implementing image denoising is provided. The method includes: calculating a tangent value of each pixel; determining whether a modulus value of the tangent value of each pixel is less than a preset threshold, if yes, determining a corresponding pixel as a non-boundary point of the image, and performing bilateral filter on a pixel determined as a non-boundary point of the image and pixels which are around the pixel and of which distances to the pixel are less than or equal to a first filtering radius; and if not, determining a corresponding pixel as a boundary point of the image, and performing bilateral filter on a pixel determined as a boundary point of the image and pixels whose distances along tangent directions and opposite directions of the tangent directions to the pixel are less than or equal to a second filtering radius.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: November 8, 2016
    Assignee: Tencent Technology (Shenzhen) Company Limited
    Inventor: Deqiang Jiang
  • Patent number: 9390484
    Abstract: Methods, apparatus, and computer-readable storage media for tone mapping High Dynamic Range (HDR) images. An input HDR image is separated into luminance and color. Luminance is processed to obtain a base layer and a detail layer. The base layer is compressed according to a non-linear remapping function to reduce the dynamic range, and the detail layer is adjusted. The layers are combined to generate output luminance, and the output luminance and color are combined to generate an output image. A base layer compression technique may be used that analyzes the details and compresses the base layer accordingly to provide space at the top of the intensity scale where the details are displayed to thus generate output images that are visually better than images generated using conventional techniques. User interface elements may be provided via which a user may control one or more parameters of the tone mapping method.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 12, 2016
    Assignee: Adobe Systems Incorporated
    Inventors: Sylvain P. Paris, Jen-Chan Chien, Eric Chan
  • Patent number: 9007392
    Abstract: The present invention provides a method for enhancing contrast of a color image displayed on a display system and an image processing system utilizing the same. In the present invention, the gray values of R, G, and B components of one color image are separately counted during processing the image. When calculating the corresponding output values for the gray values of R, G, and B components in each pixel, they are adapted to ratios between the gray values of R, G, and B components. Therefore, the present invention can effectively maintain the color distribution for a considerable degree and greatly enhance the image contrast.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: April 14, 2015
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Jian-rong Chen, Chun-chieh Chiu
  • Patent number: 8941563
    Abstract: The invention relates to a display device comprising a first light for emitting light rays and a first modulator operable to modulate those light rays for generating primary modulated light ray (10). A second light-source having a second modulator operable to generate secondary modulated light rays is also provided (14). The second light-source is transparent and is disposed relative to the first light-source such that primary modulated light rays generated by the first light-source are transmittable though the second light-source whereby a composite light-output comprising both primary and secondary modulated light rays is generated.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: January 27, 2015
    Assignee: Polygon Systems UK LLP
    Inventor: Alessandro Artusi
  • Patent number: 8917285
    Abstract: Display methods and interfaces for high dynamic range images. High dynamic range images and corresponding histograms are displayed on a display device. The histogram panel displays low dynamic range and high dynamic range data of the images simultaneously. The low dynamic range and high dynamic range data is brightness level of the image pixels.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: December 23, 2014
    Assignee: Corel Corporation
    Inventor: Tsung-Wei Lin
  • Patent number: 8907971
    Abstract: A global image adjustment, such as dynamic range adjustment is established based on image characteristics. The image adjustment is based more heavily on pixel values in image areas identified as being important by one or more saliency mapping algorithms. In one application to dynamic range adjustment, a saliency map is applied to create a weighed histogram and a transformation is determined from the weighted histogram. Artifacts typical of local adjustment schemes may be avoided.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Anders Ballestad, Gerwin Damberg
  • Patent number: 8896625
    Abstract: A method and a system for fusing images in an image processing field are described. The method includes: capturing at least two frames of images having different intensity under different exposure time in the same scene; fusing the images having different intensity values according to an intensity mapping relation between every two frames of images in the images having different intensity values, and obtaining a fused image is, in which the intensity mapping relation represents a corresponding relation between an intensity value of a pixel location in a bright image and that at the corresponding location in a dark image. Through the method and the system for fusing the images according to the present invention, the dynamic range of the image is enhanced, and the fusing process has a desired result and is easy to implement.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: November 25, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hai Chen, Lingzhi Liu
  • Publication number: 20140333649
    Abstract: An image processing apparatus can correct the influence of contrast caused by a difference between a photopic vision and a scotopic vision to provide an image excellent in image quality. An averaged within-visual-field luminance calculation unit calculates a luminance value in the visual field based on at least one of environmental luminance in the visual field and luminance in a screen on which image data can be displayed. A reverse gamma conversion processing unit corrects the contrast of the image data based on the obtained luminance value in the visual field.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Publication number: 20140327694
    Abstract: Techniques for presenting multiple content items on a display without hardware modification. These techniques determine a first angle relative to the display at which a first content item is to be shown and a second content item is to be hidden. The techniques also determine a second angle at which the first content item is to be hidden and the second content item shown. The techniques then compute a first pair of pixel values having a contrast that is less than a threshold at the first angle and a second pair of pixel values having a contrast that is less than the threshold at the second angle. The techniques then render the content items such that the first content item is perceivable at the first angle and hidden at the second angle, while the second content item is hidden at the first angle and perceivable at the second angle.
    Type: Application
    Filed: January 19, 2012
    Publication date: November 6, 2014
    Applicant: Microsoft Corporation
    Inventors: Xiang Cao, Seokhwan Kim, Haimo Zhang, Desney S. Tan
  • Patent number: 8870393
    Abstract: An image projection apparatus that can perform a wall color correction and an ambient light correction obtains a wall color correction parameter by projecting a calibration image for the wall color correction and then obtains an ambient light correction parameter by projecting a calibration image for the ambient light correction, which has been subjected to the wall color correction using the wall color correction parameter.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: October 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Norihiro Kawahara
  • Patent number: 8874189
    Abstract: In a method and a device MR images having various contrasts are scanned and then values for some or all of the parameters T1, T2 and PD related to the scanned MR images are determined. Based on the scanned MR images and the determined parameter values an initial conventional MR contrast image with some default scanner settings is generated, or alternatively, a stronger non-physical MR contrast image. The initial MR contrast image can then be manipulated by a user in response to movement of a user-controlled marker on a screen showing the contrast image such that a contrast optimized image can be obtained for a particular diagnosis in a very short time. Furthermore a quantitative image can be generated representing the amount of a single tissue type.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 28, 2014
    Assignee: SyntheticMR AB
    Inventor: Marcel Warntjes
  • Patent number: 8866814
    Abstract: Systems and methods are provided for producing a rendered drawing or rendering from a detailed image of an object (e.g. photograph) resulting in a rendering that is photogrammetric and that preserves detail in the said image of said object. The combination of the metric nature and image detail preservation in a rendering resulting from the process enhances the usefulness of the rendering to users. The invention is useful in particular for large format renderings such as wire frame style drawings used for blueprints in the architecture, engineering and construction industry (AEC industry) when used for existing structures. The processes combine graphic arts techniques with photogrammetric techniques to preserve, fully or partially, information about an object as captured in image detail of said object and to present said information in photogrammetrically correct rendering, which rendering may be incorporated into drawings useful to and/or familiar to end users of said drawings.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: October 21, 2014
    Inventor: Battle M. Brown
  • Patent number: 8860718
    Abstract: In a method, unit and display device, the input image signal is split into a regional contrast signal and a detail signal, followed by stretching separately the dynamic ranges for at least one of the signals. The dynamic range for the regional contrast signal is stretched with a higher stretch ratio than the dynamic range for the detail signal. The stretch ratio for the detail signal may be near 1 or 1. Further, highlights are identified, and for the highlights the dynamic range is stretched to an even higher degree than for the regional contrast signal.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 14, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Remco Theodorus Johannes Muijs
  • Publication number: 20140300627
    Abstract: A method, apparatus and computer program product for indicating scroll position on a display is presented. A movement event requiring movement of content within a display area is identified. A location indicator is displayed at a first content location relative to content within the display area, the location indicator identifying that the first content location will remain visible on the display in response to the movement event. During movement of the content within the display area, a corresponding movement of the location indicator relative to the first content location is provided as the first content location moves with the content within the display area.
    Type: Application
    Filed: February 20, 2012
    Publication date: October 9, 2014
    Applicant: ADOBE SYSTEMS INCORPORATED
    Inventors: DAVID ZUVERINK, DOMINIC BUTLER
  • Publication number: 20140267378
    Abstract: Systems and methods may apply global contrast correction to a plurality of thermal images. For example, a vehicle may capture a plurality of aerial thermal images for use in generating a composite image. Each individual thermal image may be individually contrasted based on the temperature range of pixels in that image, so the contrast range of the thermal images may vary. The plurality of thermal images may be analyzed to determine a global contrast range. Extreme temperatures may be excluded from the global contrast range. Based on the global contrast range, a contrast level of each of the plurality of thermal images may be adjusted. For example, the individual temperature range of each thermal image may be scaled to a global temperature range. A composite image having consistent contrasting may be generated from the plurality of thermal images.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: Eric Olsen
  • Patent number: 8823726
    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: Grant
    Filed: June 3, 2011
    Date of Patent: September 2, 2014
    Assignee: Apple Inc.
    Inventors: Daniel Pettigrew, Andrew Bryant, James C. Arndt, Olivier Fedkiw, Ryan A. Gallagher
  • Patent number: 8823729
    Abstract: A patient monitoring/defibrillation instrument displays patient vital signs in numeric form or as graphical waveform traces. Under normal room lighting conditions the numeric and waveform information is displayed in color against a black or gray background. When the patient monitor is operated outside or in bright light, the user has the option to select a color map for display of the patient vital signs information in a highly contrasting manner such as black numeric or waveform information against a bright background such as yellow. The high contrast display, while being objectionable in most indoor settings, has been found to comfortably and effectively display the monitored information in sunlight without the need to increase power to the display.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: September 2, 2014
    Assignee: Koninklijke Philips N.V.
    Inventor: Edward Parnagian
  • Publication number: 20140240342
    Abstract: A display screen is disclosed. The display screen comprises a light source layer, configured to be in an “on” state for providing a display light source corresponding to a first display mode, when the display screen is in the first display mode, and to be in an “off” state when the display screen is in a second display mode different from the first display mode; a liquid crystal layer, disposed in front of the light source layer; a polarizer, disposed in front of the liquid crystal layer; and a control unit, in connection with the liquid crystal layer and configured to control the liquid crystal layer. An electronic device is also disclosed, including the above described display screen and a method for processing information of the electronic device.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicants: Lenovo (Beijing) Limited, Beijing Lenovo Software Ltd.
    Inventors: Fang Xu, Zhenhua Zhang, Ke Shang, Like Zhong
  • Patent number: 8797347
    Abstract: A brightness control unit includes: a “feedback brightness control unit” that calculates a first gain from a corrected image data and multiplies the first gain by image data prior to correct; and a “feedforward brightness control unit” which, when a scene change is detected, calculates a second gain on the basis of a difference between the first gain which is calculated from the corrected image data and the first gain which has been multiplied by the pre-correction image data of the corrected image data in order to correct the difference, and multiplies the second gain by the corrected image data.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: August 5, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Norihiko Miyachi, Osamu Sagano, Makiko Mori
  • Patent number: 8791952
    Abstract: A system and method for generating immersive sensation for a two-dimensional still image is provided. The method for generating immersive sensation including: converting a color space of an inputted image; loading a background mask to separate a foreground image and a background image from the inputted image; achieving attribute information for each of the foreground image and the background image, based on a perceptual attribute with respect to the color space, via an image content analysis; predicting scaling parameters based on the attribute information; and enhancing the inputted image based on the scaling parameter.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: July 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiao Kaida, Ji Young Hong, Ho Young Lee
  • Publication number: 20140146070
    Abstract: The present document provides a method and apparatus for managing a display screen, and the display screen includes at least two display areas. The method includes: detecting a first display effect damaged value of a first display area in the at least two display areas; comparing the first display effect damaged value with a predetermined threshold value, and outputting a first comparison result; and when the first display effect damaged value is larger than the threshold value, adjusting a display effect of the first display area to a first display effect based on the first display effect damaged value, to match the first display effect with a second display effect of a second display area without stains. Through the above technical scheme, adjustment is performed on display effect of the display screen, which guarantees the display effect of the display screen and makes the user experience of users enhance greatly.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 29, 2014
    Applicant: ZTE CORPORATION
    Inventors: Fengpeng Liu, Haibo She, Dongmei Liu, Lingling Dong, Qinli Sun, Zongwei Huang
  • Patent number: 8681187
    Abstract: An image processing apparatus includes a calculation to calculate a compression gain that is applied to a low-frequency component of an input image and an amplification gain that is applied to a high-frequency component of the input image, a generation to generate a display image in which a pixel value of a pixel of the input image is corrected based on the compression gain and the amplification gain calculated by the calculation unit, and a display to display the display image.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: March 25, 2014
    Assignee: Fujitsu Limited
    Inventors: Motonobu Mihara, Masayoshi Shimizu
  • Patent number: 8670000
    Abstract: A method includes generating a light pattern using a display panel and forming a virtual image from the light pattern utilizing one or more optical components. The virtual image is viewable from a viewing location. The method also includes receiving external light from a real-world environment incident on an optical sensor. The real-world environment is viewable from the viewing location. Further, the method includes obtaining an image of the real-world environment from the received external light, identifying a background feature in the image of the real-world environment over which the virtual image is overlaid, and extracting one or more visual characteristics of the background feature. Additionally, the method includes comparing the one or more visual characteristics to an upper threshold value and a lower threshold value and controlling the generation of the light pattern based on the comparison.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: March 11, 2014
    Assignee: Google Inc.
    Inventors: Max Braun, Xiaoyu Miao, Adrian Wong, Babak Amirparviz
  • Patent number: 8665286
    Abstract: Teachings herein compose a digital image so that the image is perceptible on a viewing surface, such as a projection surface or a transparent screen. In doing so, the teachings advantageously recognize a digital image as consisting of one or more logical objects, like buttons of a user interface. Often, logical objects may be spatially arranged within the image and/or colored in different possible ways without substantially affecting the meaning conveyed by the image. Exploiting this, teachings herein evaluate light reflected from, or transmitted through, the viewing surface, and compose the digital image from one or more logical objects that have a spatial arrangement or coloration determined in dependence on that evaluation. The teachings might, for example, place a logical object within the image so that it will be displayed on a region of the surface which has high contrast with the object's colors and/or low color variance.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: March 4, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Harald Gustafsson, Jan Patrik Persson, Per Persson
  • Patent number: 8660379
    Abstract: To obtain an output image where contrast relating to the luminance of an input image has been adjusted. In an image processing method for adjusting the luminance value of each pixel contained in an input image, first, a closed region ?(x, y) made up of a plurality of pixels in the input image is demarcated as a target region, and the target region is moved within the input image by predetermined pixel units. At this point, a maximum value and a minimum value of luminance energy defined as a luminance arrangement in the target region are calculated, and difference data of the luminance energy is calculated (step S4). Next, the difference data calculated in step S4 is adapted to the input image to generate an output image (step S6).
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: February 25, 2014
    Assignees: Rohm Co., Ltd., Takumi Vision Co., Ltd.
    Inventors: Shogo Takamura, Hironori Yamauchi
  • Patent number: 8654139
    Abstract: An apparatus may include a processor configured to determine a first value for a center of brightness and a second value for a window width for contrast. The processor may further be configured to process a first image to generate a second image having a reduced bit-depth based at least in part upon the determined first and second values. The processor may additionally be configured to provide the second image to a remote device to facilitate viewing and manipulation of the second image in a general purpose viewing agent. Corresponding methods, computer program products, and systems are also provided.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: February 18, 2014
    Assignee: McKesson Technologies Inc.
    Inventor: Rex Jakobovits
  • Patent number: 8648873
    Abstract: A system including a processor for adjusting the dynamic range of an image including a plurality of pixels. The processor segments the pixels into blocks, and computes statistical values for each block based on intensity values of the pixels. The processor also adjusts the dynamic range of the image by controlling the intensity values of the pixels based on the statistical values.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 11, 2014
    Assignee: Exelis, Inc.
    Inventors: Theodore Anthony Tantalo, Kenneth Michael Brodeur
  • Patent number: 8605083
    Abstract: In a method, unit and display device the input image signal is split into a regional contrast signal (VRC) and a detail signal (VD), followed by stretching separately the dynamic ranges for both signals, wherein the dynamic range for the regional contrast signal is stretched with a higher stretch ratio than the dynamic range for the detail signal. Preferably the stretch ratio for the detail signal is near 1 or preferably 1. In preferred embodiment highlights are identified and for the highlights the dynamic range is stretched to an even higher degree than for the regional contrast signal.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: December 10, 2013
    Assignee: Koninklijke Philips N.V.
    Inventor: Remco Theodorus Johannes Muijs
  • Patent number: 8594445
    Abstract: One embodiment of the present invention provides a system for applying a bilateral filter to an image. During operation, the system selects a first region within the image which is associated with a first pixel. Next, the system constructs a first histogram using pixel values within the first region. The system then computes a new value for the first pixel using the current value of the first pixel and the first histogram. The system then selects a second region within the image which is associated with a second pixel. Next, the system determines a non-overlapping region between the first region and the second region. The system then constructs a second histogram using the first histogram and pixel values in the non-overlapping region. Next, the system computes a new value for the second pixel using the current value of the second pixel and the second histogram.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 26, 2013
    Assignee: Adobe Systems Incorporated
    Inventor: Christopher B. Cox
  • Patent number: 8576157
    Abstract: Provided is a low-power image display device including a brightness determining unit that determines the brightness of image data applied from outside; a histogram analyzing unit that is connected to the brightness determining unit, calculates a cumulative distribution function (CDF) of the determined image data, and selects the brightness of the image data, corresponding to the number of pixels preset in the calculated CDF, as reference brightness; a brightness control unit that is connected to the brightness determining unit and the histogram analyzing unit and converts the image data such that the contrast of the image data is converted into contrast corresponding to the reference brightness; a data drive that is connected to the brightness control unit, receives the image data of which the contrast is changed, and converts the image data into an image output signal for displaying an image to the outside; a backlight control unit that is connected to the histogram analyzing unit and the data drive and gene
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: November 5, 2013
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventor: Cheon Ho Bae
  • Patent number: 8564831
    Abstract: The different illustrative embodiments provide a computer program product, and apparatus for managing a set of colors in a document. A plurality of respective costs are identified. Each respective cost is associated with printing the document using a respective combination of a plurality of combinations of the set of colors. An amount of contrast for a first respective combination is identified using a contrast matrix. A determination is made as to whether the amount of contrast for the first respective combination and an associated respective cost meet a set of criteria. Responsive to a determination that the set of criteria is met, the document is printed using the first respective combination.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: October 22, 2013
    Assignee: International Business Machines Corporation
    Inventors: Vinicio Bombacino, Leonardo Lanni, Luigi Massa, Andrea Tortosa
  • Patent number: 8564835
    Abstract: The different illustrative embodiments provide a method and apparatus for managing a set of colors in a document. A plurality of respective costs are identified. Each respective cost is associated with printing the document using a respective combination of a plurality of combinations of the set of colors. An amount of contrast for a first respective combination is identified using a contrast matrix. A determination is made as to whether the amount of contrast for the first respective combination and an associated respective cost meet a set of criteria. Responsive to a determination that the set of criteria is met, the document is printed using the first respective combination.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: October 22, 2013
    Assignee: International Business Machines Corporation
    Inventors: Vinicio Bombacino, Leonardo Lanni, Luigi Massa, Andrea Tortosa
  • Patent number: 8542233
    Abstract: Systems and methods are provided for producing a rendered drawing or rendering from a detailed image of an object (e.g. photograph) resulting in a rendering that is photogrammetric and that preserves detail in the said image of said object. The combination of the metric nature and image detail preservation in a rendering resulting from the process enhances the usefulness of the rendering to users. The invention is useful in particular for large format renderings such as wire frame style drawings used for blueprints in the architecture, engineering and construction industry (AEC industry) when used for existing structures. The processes combine graphic arts techniques with photogrammetric techniques to preserve, fully or partially, information about an object as captured in image detail of said object and to present said information in photogrammetrically correct rendering, which rendering may be incorporated into drawings useful to and/or familiar to end users of said drawings.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: September 24, 2013
    Inventor: Battle M. Brown
  • Publication number: 20130207992
    Abstract: The application discloses a method of controlling frame data to be fed to a display device, comprising: controlling one or more processors of an electronic device to produce frame data in which the contrast of a region of the image represented by the frame data is adjusted responsive to: animation of that region of the image; and an indication that the contrast of the region should be adjusted during animation.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Inventors: Emil Alexander WASBERGER, Svante Magnus Ulfstand HALLERSTRÖM SJÖSTEDT, Dan Zacharias GÄRDENFORS
  • Patent number: 8478078
    Abstract: Provided is a method for determining the magnification of a pattern searching template of a scanning electron microscope. The determining method comprises: acquiring a first image initially at a first magnification; then acquiring a second image which contains a pattern image displayed on the first image at a second magnification lower than the first magnification; making the size of the first image coincident with the size of a third image which cut out a portion of the second image; thereafter determining the correlation value between the first image and the third image; and setting the second magnification as the magnification of a pattern searching template, in the case where the correlation value is equal to or higher than a predetermined value. As a result, a condition for acquiring a search area can be properly set, when pattern recognition is performed by means of the template.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: July 2, 2013
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Kei Sakai, Fumihiro Sasajima
  • Patent number: 8462169
    Abstract: A system and method for generating immersive sensation for a two-dimensional still image is provided. The method for generating immersive sensation including: converting a color space of an inputted image; loading a background mask to separate a foreground image and a background image from the inputted image; achieving attribute information for each of the foreground image and the background image, based on a perceptual attribute with respect to the color space, via an image content analysis; predicting scaling parameters based on the attribute information; and enhancing the inputted image based on the scaling parameter.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: June 11, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiao Kaida, Ji Young Hong, Ho Young Lee
  • Patent number: 8427501
    Abstract: The present invention relates to a method of calibration of a display device by iteration in order to optimize an electrical control voltage of the display device, the calibration method comprising a measurement of an optical contrast of the display device and a calculation of an electrical control voltage value, the optical contrast measurement and the calculation of the electrical voltage value being carried out once during each calibration step, the optimization of the electrical control voltage being carried out starting from an initial value of the electrical control voltage and ending with a final value of the electrical control voltage, the calibration method being carried out by means of an initial calibration step and by means of a calibration refinement step, the initial calibration step being carried out once during the calibration method, the calibration refinement step being carried out once or several times during the calibration method, the approximation of the final value of the electrical con
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: April 23, 2013
    Assignee: Johnson Controls Technology Company
    Inventor: Christophe Bardot
  • Publication number: 20130070209
    Abstract: A projection system for projecting an output image. The projection system comprises a plurality of laser diodes, each laser diode operable to generate a light beam having a selected intensity in response to a control voltage and a control current and combiner optics for combining light beams received from the plurality of laser diodes to generate an output light beam. A MEMS mirror module receives the output light beam from the combiner optics and generates a scanning light beam that forms the output image on a projection surface. A controller adjusts the control voltage associated with each of the plurality of laser diodes for a first line of pixel data in response to a determination of a level of contrast associated with the first line of pixel data.
    Type: Application
    Filed: November 3, 2008
    Publication date: March 21, 2013
    Applicant: NATIONAL SEMICONDUCTOR CORPORATION
    Inventor: Michel Cantelobre
  • Patent number: 8384732
    Abstract: A method for adjusting color saturation is adapted for color adjustment of a pixel in a color space. The method includes: determining a color cube in the color space; selecting one from a plurality of diagonals of the color cube as a primary diagonal, and setting the primary diagonal at a vertical axis of the color space; determining a hue azimuth angle and a height in the color cube desired by the pixel; determining a reference point at an outermost periphery of the color cube corresponding to the azimuth angle, and obtaining a reference height and a reference horizontal distance of the reference point distant from the primary diagonal; and obtaining a color saturation value of the pixel by multiplying the reference horizontal distance with a ratio between the reference height and the height of the pixel.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: February 26, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Hung Lien, Dong-Yang Lin, Ching-Hsung Wang
  • Patent number: 8379049
    Abstract: The invention provides tools and techniques for clone brushing pixels in an image while accounting for inconsistencies in apparent depth and orientation within the image. The techniques do not require any depth information to be present in the image, and the data structure of the image is preserved. The techniques allow for color compensation between source and destination regions. A snapping technique is also provided to facilitate increased accuracy in selecting source and destination positions.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: February 19, 2013
    Assignee: EveryScape, Inc.
    Inventors: Byong Mok Oh, Fredo Durand
  • Publication number: 20130038626
    Abstract: A method and system for color enabled local area contrast enhancement, are provided by generating a first copy of an image; processing the first copy to locally enhance visual contrast in the image; generating a second copy of the image; processing the second copy of the image to provide at least one visual cue to radiant flux within the image incident on the focal plane pixels; displaying a combined image formed from the combination of the locally enhanced first copy and flux mapped the second copy.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 14, 2013
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Francis M. Feda
  • Patent number: 8355030
    Abstract: Display methods and interfaces for high dynamic range images. High dynamic range images and corresponding histograms are displayed on a display device. The histogram panel displays low dynamic range and high dynamic range data of the images simultaneously. The low dynamic range and high dynamic range data is brightness level of the image pixels.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: January 15, 2013
    Assignee: Corel Corporation
    Inventor: Tsung-Wei Lin