Distortion Control In Image Reproduction (e.g., Removing, Reducing Or Preventing Image Artifacts) Patents (Class 358/3.26)
  • Patent number: 10306252
    Abstract: The present invention includes obtaining block type identification information on a partition of the current macroblock when the current macroblock is intra-mixed, specifying a block type of the current macroblock based on the block type identification information, obtaining an intra prediction mode of the current macroblock according to the block type of the partition of the current macroblock, and predicting the current macroblock using the intra prediction mode and a pixel value of a neighboring block.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: May 28, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Joon Young Park, Seung Wook Park, Jung Sun Kim, Young Hee Choi, Byeong Moon Jeon
  • Patent number: 10255665
    Abstract: When distortion correction is performed by dividing a distortion correction target region (Atc), a distortion-corrected division region image (D3) is generated by performing the distortion correction on each division region of the distortion correction target region and a distortion-corrected image (D4) is generated by combining a plurality of distortion-corrected division region images (D3). Regarding each pixel of the distortion-corrected image (D4), a gain (Gp) is determined according to scaling ratios (MR) of a division region including the pixel and one or more division regions around the division region, high-frequency components (D6) of the pixel are multiplied by the gain (Gp), and the product is added to a pixel value of the pixel of the distortion-corrected image (D4). This makes it possible to lessen the difference in the sense of resolution among the division regions of the distortion-corrected image (D4) and obtain an image having an excellent sense of resolution.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 9, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Suzuki, Yoshitaka Toyoda, Takeo Fujita, Narihiro Matoba
  • Patent number: 10204294
    Abstract: An image processing device includes circuitry to segment an image corresponding to input image data into a black text area including black text and a non-black text area of the image data other than the black text area, perform a first type of color correction on pixel data items in the black text area and a second type of color correction on pixel data items in the non-black text area to generate a processed image, and determine whether or not the image is a color image using the processed image. The second type of color correction is different from the first type of color correction.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: February 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Takumi Ishikawa
  • Patent number: 10163196
    Abstract: An image processing device includes: an HDR image generating unit configured to generate an HDR image signal by first high dynamic range combining of a first signal including first image data and a second signal including second image data; a tone compressing unit configured to generate a first tone-compressed image signal to be displayed by performing tone compression processing on the HDR image signal generated by the HDR image generating unit; and a color correcting unit configured to generate a second tone-compressed image signal by second high dynamic range combining of at least the first and second signals based on the first tone-compressed image signal.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: December 25, 2018
    Assignee: OLYMPUS CORPORATION
    Inventor: Tomoya Sato
  • Patent number: 10134121
    Abstract: There is provided a computerized method and system of controlling a quality measure in a compression quality evaluation system, the method comprising: calculating a value indicative of a characteristic of an input image; and configuring the quality measure upon a criterion being met by the value, the quality measure being indicative of perceptual quality of a compressed image compressed from the input image. The value can be a smoothness value indicative of an extent of smoothness of an input image, and the configuration of the quality measure can be performed upon a smoothness criterion being met by the smoothness value. Alternatively, the value can be a gradient value indicative of an extent of gradual spatial changes of an input image, and the configuration of the quality measure can be performed upon a gradient criterion being met by the gradient value.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: November 20, 2018
    Assignee: BEAMR IMAGING LTD
    Inventors: Sharon Carmel, Dror Gill, Tamar Shoham, Udi Yehuda Shrot
  • Patent number: 10129415
    Abstract: Provided is an image reading apparatus including a line sensor including three line sensors arranged at a predetermined interval in a sub-scanning direction, and being configured to read an image of an original by the respective line sensors, which includes light receiving elements arranged in a first direction, to generate read data representing the read image, the three line sensors each including a first light receiving element configured to receive red light, a second light receiving element configured to receive blue light, and a third light receiving element configured to receive green light, which are arranged in a main scanning direction; and a reading control board. The reading control board is configured to generate a first combined flag obtained by combining results of detecting abnormal images of respective colors and a second combined flag obtained by combining results of detecting abnormal images of the respective colors.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Morikawa
  • Patent number: 10121088
    Abstract: The page straightening system includes a word module to determine an enclosing quadrilateral of each connected component of curved page content. Further, a line module in the page straightening system is configured to form text lines by joining enclosing quadrilaterals based on a reading order. Subsequently, a correction module in the page straightening system is configured to generate straightened content from the curved content based on the text lines. As such, the page straightening system can automatically straighten curved page content.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: November 6, 2018
    Assignee: ADOBE SYSTEMS INCORPORATED
    Inventor: Ram Bhushan Agrawal
  • Patent number: 10091853
    Abstract: An illumination system comprising a light source with a linear array of light emitting elements and an arrangement for regulating power to the array whereby the light emitting elements emit light in accordance with a tapered gradient intensity profile. In the illustrative embodiment, the light source includes first and second linear arrays of light emitting elements and a mirror is mounted there between. The tapered profile begins at the waist of a user when a user is standing near and in front of the mirror. In the digital embodiment, a camera is included along with software for detecting the user's waist (or detecting the user's height and inferring therefrom said user's waist) and adjusting the profile based on the detection of the user's height or waist. Any intensity profile, e.g. ramp, Gaussian, etc., may be implemented and one or more such arrays may be used and mounted horizontally, vertically or both. Each array may have a different intensity or luminous profile.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: October 2, 2018
    Inventor: Mary L. Ellis
  • Patent number: 10043246
    Abstract: An image processing apparatus including an image transmission map estimator, a transmission map optimizer, and an image rebuilder is provided. The image transmission map estimator receives an input image and estimates transmission rate of the input image to generate an estimated transmission map. The transmission map optimizer receives the estimated transmission map and operates smooth operations with different strength on the estimated transmission map to respectively generate a plurality of smoothed transmission maps. The transmission map optimizer generates an optimized transmission map according to the estimated and smoothed transmission maps. The image rebuilder receives the optimized transmission map and generates an output image by rebuilding the input image according to the optimized transmission map.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: August 7, 2018
    Assignee: Novatek Microelectronics Corp.
    Inventor: Hsiu-Wei Ho
  • Patent number: 10032088
    Abstract: An automated, computerized method is provided for processing an image. The method includes the steps of arranging a digital camera on a vehicle body, operating the digital camera to provide an image file depicting an image of a scene related to vehicle operation on a road, in a computer memory, receiving from the memory the image file depicting pixels of an image of the scene related to vehicle operation on a road, and using an analysis of the pixels to generate an illumination invariant image of the scene. A further process step includes using the illumination invariant image to analyze the road scene for painted road markings.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: July 24, 2018
    Assignee: Tandent Vision Science, Inc.
    Inventor: Casey Arthur Smith
  • Patent number: 10002412
    Abstract: A device for removing haze from an image includes an image decomposer that decomposes a near-infrared (NIR) image to generate an NIR detail layer image and decomposes an RGB image to generate an RGB detail layer image and an RGB base layer image, a weight generator that generates a mixing weight value based on a similarity between high frequency (HF) components of the NIR image and the RGB image, a detail layer mixer that mixes the NIR detail layer image and the RGB detail layer image based on the mixing weight value to generate a mixed RGB detail layer image, a base layer dehazer that removes haze from the RGB base layer image to generate a compensated RGB base layer image, and an adder that adds the mixed RGB detail layer image and the compensated RGB base layer image to generate an output RGB image.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: June 19, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Rae-Hong Park, Dong-Won Jang
  • Patent number: 9998628
    Abstract: Disclosed are methods and multi-function devices for auto-correction of shadow effects in a scanned image. The method includes receiving a first image including a colored twin-page scanned document including at least one of a shadow region in a central part of the first image, at least one darker region caused at one or more borders of the first image, and distorted orientation with respect to a base of the first image; re-positioning the shadow region present in the central part to generate a re-positioned first binary image such that the shadow region becomes perpendicular to the base; detecting a shadow region in a central region of the re-positioned first binary image; removing the detected at least one shadow region from the re-positioned first binary image to generate a second image; and correcting a skewed orientation of each of a cropped left side and right side of the second image.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: June 12, 2018
    Assignee: XEROX CORPORATION
    Inventors: Mohan Palaniyappan, Punitha Puttuswamy, Arindam Das
  • Patent number: 9906655
    Abstract: A terminal device includes a display unit that displays acquired image information, a receiving unit that receives an analysis position of quality unevenness in the image information, and a detection unit that detects pitch information by respectively performing frequency analysis on first and second regions containing the analysis position. The display unit displays the pitch information detected from the first region with respect to pitch information equal to or greater than a predetermined pitch length and displays the pitch information detected from the second region with respect to pitch information less than the predetermined pitch length.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: February 27, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Shinya Miyamori
  • Patent number: 9898681
    Abstract: An apparatus and method for detecting an object using a multi-directional integral image are disclosed. The apparatus includes an area segmentation unit, an integral image calculation unit, and an object detection unit. The area segmentation unit places windows having a size of x*y on a full image having w*h pixels so that they overlap each other at their edges, thereby segmenting the full image into a single area, a double area and a quadruple area. The integral image calculation unit calculates a single directional integral image for the single area, and calculates multi-directional integral images for the double and quadruple areas. The object detection unit detects an object for the full image using the single directional integral image and the multi-directional integral images.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 20, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dae-Ha Lee, Cheon-Shu Park, Min-Su Jang, Jae-Hong Kim, Jong-Hyun Park
  • Patent number: 9881373
    Abstract: An image generating apparatus generates an edge image that is an image for which an edge has been enhanced or extracted from an original image obtained by imaging a subject. The image generating apparatus has a viewpoint image generating unit configured to generate a viewpoint image from the original image; and an edge processing unit configured to generate the edge image by applying edge processing to enhance or extract an edge with respect to the viewpoint image generated by the viewpoint image generating unit.
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: January 30, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tomochika Murakami
  • Patent number: 9875415
    Abstract: An automated, computerized method is provided for processing an image. The method includes the steps of arranging a digital camera on a vehicle body, operating the digital camera to provide an image file depicting an image of a scene related to vehicle operation on a road, in a computer memory, receiving from the memory the image file depicting pixels of an image of the scene related to vehicle operation on a road, and using an analysis of the pixels to generate an illumination invariant image of the scene. The illumination-invariant image is converted to a grayscale image and the grayscale image is then converted to an illumination-invariant color image.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 23, 2018
    Assignee: Tandent Vision Science, Inc.
    Inventor: Casey Arthur Smith
  • Patent number: 9870600
    Abstract: A method for processing image or video data receives color filtered mosaiced raw image or video data. The method, performed in an image processing pipeline, de-hazes the color filtered mosaiced raw image or video data, e.g. Bayer image data, to create de-hazed mosaiced image or video data and de-mosaicing the de-hazed mosaiced image or video data to crate de-hazed and de-mosaiced image or video data.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: January 16, 2018
    Assignee: The Regents of the University of California
    Inventors: Truong Q. Nguyen, Yeejin Lee, Changyoung Han
  • Patent number: 9852536
    Abstract: This disclosure describes techniques for performing high order filtering in a graphics processing unit (GPU). In examples of the disclosure, high order filtering may be implemented on a modified texture engine of a GPU using a single shader instruction. The modified texture engine may be configured to fetch all source pixels needed for the high order filtering and blend them together with pre-loaded filtering weights.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 26, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Liang Li, Guofang Jiao, Yunshan Kong, Javier Ignacio Girado
  • Patent number: 9842665
    Abstract: Disclosed herein are laser scanning systems and methods of their use. In some embodiments, laser scanning systems can be used to ablatively or non-ablatively scan a surface of a material. Some embodiments include methods of scanning a multi-layer structure. Some embodiments include translating a focus-adjust optical system so as to vary laser beam diameter. Some embodiments make use of a 20-bit laser scanning system.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: December 12, 2017
    Assignee: nLIGHT, Inc.
    Inventor: Ken Gross
  • Patent number: 9837178
    Abstract: An image processing apparatus includes: a measurement data acquiring unit that acquires data obtained by using an imaging apparatus to capture an image formed by an electromagnetic wave transmitted through an object, as measurement data of the object; an image generating unit that generates a first image and a second image that represent information on different physical quantities, from the measurement data; a filter characteristics determining unit that determines, based on the first image, filter characteristics to be set when an anisotropic filter is applied, for each position in the image; and a filtering unit that applies the anisotropic filter to the second image while varying the filter characteristics of the anisotropic filter for each position in the image in accordance with the filter characteristics determined based on the first image.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: December 5, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kentaro Nagai
  • Patent number: 9813578
    Abstract: A device is connected to an information processing apparatus via a network. The device includes a receiving unit configured to receive a program from the information processing apparatus via the network; and a calling unit configured to call the program received by the receiving unit. The program causes the device to execute a process with respect to data stored in the device.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: November 7, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryoji Araki, Kunihiro Akiyoshi
  • Patent number: 9787874
    Abstract: Determination information is obtained to determine a degradation characteristic of sharpness of an image formed by an image forming apparatus. One of a plurality of recovery processing parameters used to recover sharpness of an image is selected based on the determination information, and characteristics of the plurality of recovery processing parameters are different from each other. Recovery processing of sharpness is performed on image data using the selected recovery processing parameter. When the degradation characteristics of sharpness are visually and substantially the same, the same recovery processing parameter is selected.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 10, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoya Takesue, Hisashi Ishikawa, Tomokazu Yanai, Hiroyuki Sakai, Yoshinori Nakajima, Hajime Nagai, Yumi Shimokodachi
  • Patent number: 9672598
    Abstract: Provided are a color moire reducing method, a color moire reducing apparatus, and an image processing apparatus. The color moire reducing method includes calculating a plurality of local color mean values around a pixel in a selected region of a current image, calculating difference values between the local color mean values and a maximum difference value from among the difference values, and setting a moire correction weight to the pixel on the basis of the maximum difference value.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: June 6, 2017
    Assignee: Hanwha Techwin Co., Ltd.
    Inventor: Jun Ho Gal
  • Patent number: 9674401
    Abstract: A printing control method includes acquiring colorimetric values of a pattern which is printed on first paper by a printing head which discharges an ink onto the first paper; generating first correction values each for correcting a corresponding one of amounts of the ink to be discharged onto the first paper by the printing head, on the basis of the colorimetric values and reference colorimetric values of the pattern printed on the first paper; generating second correction values on the basis of the first correction values and characteristic conversion coefficients; and when printing is performed on the second paper by the printing head which discharges the ink onto the second paper, correcting each of amounts of the ink to be discharged onto the second paper by the printing head, in accordance with a corresponding one of the second correction values.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: June 6, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takayoshi Kojima
  • Patent number: 9630433
    Abstract: A technique is described for determining pixel dropout in a printhead that has a plurality of print elements arrayed along an axis. In the technique, a dataset of integrated intensity values, in the printing direction on a substrate, of a captured image is generated and used to determine if pixel dropout has or may have occurred.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: April 25, 2017
    Assignee: ENTRUST DATACARD CORPORATION
    Inventor: Thomas J. Wagener
  • Patent number: 9613437
    Abstract: An image producing apparatus comprising a reconstructing unit configured to use a first reconstruction filter to reconstruct an image based on projection data collected by a scan on a subject to be imaged using a radiation source and a detector; a difference-calculating unit configured to calculate a difference between two images based on said projection data, said two images being reconstructed using second and third reconstruction filters respectively having spatial frequency characteristics such that degrees of enhancement in a mid-/low-frequency region are substantially identical to each other and degrees of enhancement in a high-frequency region are different from each other; and an image production unit configured to produce an image having reduced aliasing artifacts using said image reconstructed using said first reconstruction filter, and said difference.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 4, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Akira Hagiwara
  • Patent number: 9589323
    Abstract: A method for image enhancement may include selecting a plurality of patches of an image and determining at least one dimensionally reduced feature for each of the plurality of patches. The system may further determine a generally closest cluster from a set of clusters for each of the dimensionally reduced features and select a corresponding set of regression coefficients for each of the set of generally closest cluster. The system may also apply the selected set of regression coefficients to a corresponding patch to enhance the image.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: March 7, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Anustup Kumar Choudhury, Xu Chen, Petrus J. L. van Beek
  • Patent number: 9571840
    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: February 14, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Shankar Regunathan, Shijun Sun, Chengjie Tu, Chih-Lung Lin
  • Patent number: 9503698
    Abstract: An image sensor comprising a plurality of pixels arranged in rows and columns, the plurality of pixels comprising: image pixels arranged for providing image data, and shading detection pixels arranged for providing signals from which a degree of shading can be derived, wherein the shading detection pixels are located in substantially the same area as defined by the image pixels.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: November 22, 2016
    Assignee: Harvest Imaging BVBA
    Inventor: Albert Theuwissen
  • Patent number: 9498993
    Abstract: Judgment image data having a resolution in a direction in which a printing medium is conveyed which is lower than a printing resolution is generated based on input image data. It is determined whether color unevenness is generated in a printed image by comparing the judgment image data with reading data obtained by reading the printed image.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: November 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Kubozono, Shinsuke Ikegami, Akira Kuronuma
  • Patent number: 9495740
    Abstract: A mask inspection apparatus including, a driving unit configured to drive a stage holding an inspection target mask, in which a pattern is formed, or a calibration mask, a light irradiation device configured to irradiate light on the inspection target mask or the calibration mask, an image sensor configured to detect a light quantity signal of transmitted light or reflected light of the inspection target mask or the calibration mask at a plurality of pixels. A sensor amplifier configured to amplify an output of the image sensor with respect to each pixel, generates an optical image, and normalizes a gain and an offset of signal amplitude, wherein at a first setting the sensor amplifier sets the gain and the offset using the calibration mask, and at a second setting the sensor amplifier sets the gain and offset of the inspection target mask based on the first setting.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: November 15, 2016
    Assignee: NuFlare Technology, Inc.
    Inventor: Toshiyuki Watanabe
  • Patent number: 9475321
    Abstract: A judgment reference data having a resolution lower than a nozzle resolution in a nozzle arranging direction is generated based on input image data. The judgment reference data and read data acquired by reading a printed image are compared to judge whether the printed image has color unevenness or not.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: October 25, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinsuke Ikegami, Akira Kuronuma, Kenji Kubozono
  • Patent number: 9466005
    Abstract: An automated, computerized method is provided for processing an image. The method includes the steps of arranging a digital camera on a vehicle body, operating the digital camera to provide an image file depicting an image of a scene related to vehicle operation on a road, in a computer memory, receiving from the memory the image file depicting pixels of an image of the scene related to vehicle operation on a road, and using an analysis of the pixels to generate an illumination invariant image of the scene. A further process step includes using the illumination invariant image to analyze the road scene for painted road markings.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: October 11, 2016
    Assignee: Tandent Vision Science, Inc.
    Inventor: Casey Arthur Smith
  • Patent number: 9467716
    Abstract: Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Hoon Park, Yong-je Kim, Yung-lyul Lee
  • Patent number: 9467717
    Abstract: Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Hoon Park, Yong-je Kim, Yung-Iyul Lee
  • Patent number: 9467714
    Abstract: Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Hoon Park, Yong-je Kim, Yung-lyul Lee
  • Patent number: 9467715
    Abstract: Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-Hoon Park, Yong-je Kim, Yung-Iyul Lee
  • Patent number: 9454810
    Abstract: A tone mapping unit applies tone mapping to a block of pixel values. In each of a plurality of iterations, one or more lines of pixel values are processed based on information relating to pixel values of at least one previous line of the block which have been processed in at least one previous iteration. The information is used to determine one or more tone mapping relationships which is/are used to map the pixel values of the current line to tone-mapped pixel values. Furthermore, the information is updated based on the pixel values of the current line and stored for use in processing pixel values of a subsequent line of pixel values of the block in a subsequent iteration.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: September 27, 2016
    Assignee: Imagination Technologies Limited
    Inventors: Victor Valdes Lopez, Michael Bishop
  • Patent number: 9454841
    Abstract: This disclosure describes techniques for performing high order filtering in a graphics processing unit (GPU). In examples of the disclosure, high order filtering may be implemented on a modified texture engine of a GPU using a single shader instruction. The modified texture engine may be configured to fetch all source pixels needed for the high order filtering and blend them together with pre-loaded filtering weights.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: September 27, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Liang Li, Guofang Jiao, Yunshan Kong, Javier Ignacio Girado
  • Patent number: 9418604
    Abstract: A method of compensating a left-right gamma difference in a display apparatus using a vision inspection apparatus, which includes sensing sample grayscales displayed on areas defined on a display area of the display apparatus using image sensors of the vision inspection apparatus, estimating intensity values of a left reference boundary at a central area, a left boundary area, a right reference boundary area at the central area and a right boundary area, calculating a first grayscale correction value of the left boundary area such that an intensity estimation value of the left boundary area is substantially equal to an intensity estimation value of the left reference boundary area, and calculating a second grayscale correction value of the right boundary area such that an intensity estimation value of the right boundary area is substantially equal to an intensity estimation value of the right reference boundary area.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Yun Kim, Hoi-Sik Moon
  • Patent number: 9374487
    Abstract: A reading control portion reads an image in reading range including image regions of an entire document sheet image in both state where a document sheet is not tilted and a state where the document sheet is tilted at predetermined maximum tilt angle. A first blank sheet determination processing portion is able to determine whether the image read by the reading control portion is a blank sheet image, based on an image of a first determination region which is included in both the image region of the entire document sheet image in the state where the document sheet is not tilted and the image region of the entire document sheet image in the state where the document sheet is tilted at the maximum tilt angle. A first tilt correction processing portion executes no tilt correction processing for the document sheet image when the read image is a blank sheet image.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: June 21, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yasuyuki Yabuuchi
  • Patent number: 9361670
    Abstract: A method and a system for image haze removal are provided. The method includes the following steps: receiving an input hazy image including input pixels; determining a hybrid dark channel for each of the input pixels according to a first minimum dark channel of a corresponding large local patch and a second minimum dark channel of a corresponding small local patch; determining a transmission map for each of the input pixels according to the hybrid dark channel prior, the corresponding hybrid dark channel, and atmospheric light associated with the input hazy image in each color channel; determining a color spectrum adjustment parameter corresponding to each of the color channels; recovering scene radiance for each of the input pixels in each of the color channels according to the corresponding color spectrum adjustment parameter, the transmission map, and the corresponding atmospheric light to produce and output a de-hazed image.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: June 7, 2016
    Assignee: National Taipei University of Technology
    Inventors: Shih-Chia Huang, Bo-Hao Chen, Yi-Jui Cheng
  • Patent number: 9361527
    Abstract: An automated, computerized method is provided for processing an image. The method includes the steps of arranging a digital camera on a vehicle body, operating the digital camera to provide an image file depicting an image of a scene related to vehicle operation on a road, in a computer memory, receiving from the memory the image file depicting pixels of an image of the scene related to vehicle operation on a road, and using an analysis of the pixels to generate an illumination invariant image of the scene. A further process step includes using the illumination invariant image to analyze the road scene for painted road markings.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: June 7, 2016
    Assignee: Tandent Vision Science, Inc.
    Inventor: Casey Arthur Smith
  • Patent number: 9350892
    Abstract: An image processing apparatus processes image data configured of pixels disposed in grid form. The apparatus includes an obtaining unit that obtains distortion characteristics indicating characteristics of distortion in a target contained in original image data obtained by capturing an image of the target, and a correction unit that, using a sampling function, interpolates a pixel of interest in the original image data, based on pixels of the original image data present in a reference region in the periphery of the location of the pixel of interest. The correction unit changes the range of the reference region, the frequency characteristics of the sampling function, or both in accordance with the distortion characteristics.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: May 24, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinji Sano
  • Patent number: 9339183
    Abstract: A fundus image photographing apparatus with adaptive optics generally corrects an aberration by feedback control using a wave front sensor and a wave front correction device. The reduction in the time required to correct the aberration to a high-resolution photographing level is demanded. Aberration correction information of last photographing is stored for each subject, and a stored correction value is used to correct the aberration to reduce the time before the completion of the aberration correction. If there is no stored information, a correction value for a preset reference aberration amount is used.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 17, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tsutomu Utagawa
  • Patent number: 9317761
    Abstract: The present invention is directed to a method of determining vein patterns from a color image for personal identification, the method comprising forming a counterpart of the color image by applying a functional relationship obtained from optimization on the color image, wherein the counterpart of the color image comprises the vein patterns. An apparatus for determining vein patterns from a color image is also disclosed.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 19, 2016
    Assignees: Nanyang Technological University, Los Angeles Biomedical Research Institute
    Inventors: Wai Kin Adams Kong, Chaoying Tang, Hengyi Zhang, Noah Ames Craft
  • Patent number: 9307222
    Abstract: Systems and methods are disclosed for identifying image capture instructions for capturing images that may be used to generate quality depth maps. In some examples, the image capture instructions are generated by predictively determining in a scene-independent manner configuration settings to be used by a camera to capture a minimal quantity of images for generating the quality depth map. The image capture instructions may thus indicate a quantity of images to be captured and the aperture and focus settings to be used when capturing the images. The image capture instructions may be determined based in part on a distance estimate, camera calibration information and a predetermined range of optimal blur radii. The range of optimal blur radii ensures that there will be sufficient depth information for generating a depth map of a particular quality from the yet-to-be-captured images.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 5, 2016
    Assignee: Adobe Systems Incorporated
    Inventors: Huixuan Tang, Scott Cohen, Stephen Schiller, Brian Price
  • Patent number: 9307221
    Abstract: Systems and methods are disclosed for identifying depth refinement image capture instructions for capturing images that may be used to refine existing depth maps. The depth refinement image capture instructions are determined by evaluating, at each image patch in an existing image corresponding to the existing depth map, a range of possible depth values over a set of configuration settings. Each range of possible depth values corresponds to an existing depth estimate of the existing depth map. This evaluation enables selection of one or more configuration settings in a manner such that there will be additional depth information derivable from one or more additional images captured with the selected configuration settings. When a refined depth map is generated using the one or more additional images, this additional depth information is used to increase the depth precision for at least one depth estimate from the existing depth map.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 5, 2016
    Assignee: Adobe Systems Incorporated
    Inventors: Huixuan Tang, Scott Cohen, Stephen Schiller, Brian Price
  • Patent number: 9207561
    Abstract: An image forming apparatus that forms a color image by layering toner images of different colors includes: a photoreceptor on which an electrostatic latent image is formed through charging and exposure; an exposure unit performing exposure-scanning on the photoreceptor in accordance with image signal; an intensity determination unit determining exposure intensity according to image forming condition; and a timing determination unit determining a timing of inputting image signal for each scanning line, wherein the exposure unit has a delay duration differing depending on the exposure intensity and being from input of image signal of each pixel to be exposed to exposure of the pixel at the exposure intensity, and the timing determination unit obtains the delay duration corresponding to the exposure intensity, and determines the timing such that image signal of an initial pixel to be initially exposed is input the delay duration before the initial pixel is exposed.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 8, 2015
    Assignee: Konica Minolta, Inc.
    Inventors: Yohei Yamada, Tatsuya Eguchi, Akimasa Ishikawa
  • Patent number: 9204007
    Abstract: An image reading device includes a conveying unit, reading unit, and a control unit. The conveying unit conveys successive two sheets along a conveying path such that a gap is formed between the successive two sheets. The reading unit reads a sheet conveyed at a reading position in the conveying path. The reading unit has a light source and light-receiving unit. The control unit controls the light source to emit light at a first light intensity for a sheet that has reached the reading position. The light-receiving unit receives light reflected by the sheet present at the reading position. The control unit further controls the light source to emit a light at a second light intensity lower than the first light intensity during a period of time from when the reading unit has been read the preceding sheet to when the reading unit begins reading the subsequent sheet.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 1, 2015
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Maeda, Yuki Nakajima