Motion Adaptive Patents (Class 348/452)
  • Patent number: 10148882
    Abstract: Systems and methods are provided that capture and process frames of frame data. An image sensor captures frames of frame data representative of light incident upon the image sensor using a rolling shutter and outputs the frames of frame data. The image sensor captures at least one of the frames over a frame capture interval and then waits over a blanking interval before capturing another frame. A buffer receives and stores the frames output by the image sensor. An image signal processor retrieves the frames from the buffer and processes the frames over successive frame processing intervals to generate a video having a time interval per frame greater than the frame capture interval. At least one of the successive frame processing intervals is greater than the frame capture interval and is less than or equal to a sum of the frame capture interval and the blanking interval.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: December 4, 2018
    Assignee: GoPro, Inc.
    Inventors: Paul Mobbs, Scott Patrick Campbell, David A. Newman, Kasturi Rangam, Sumit Chawla
  • Patent number: 10147350
    Abstract: Techniques for displaying a video or images in perceived better resolution are described. An input image is expanded into two frames based on the architecture of sub-pixels. A first frame is derived from the input image while the second frame is generated based on the first frame. These two frames are of equal size to the input image and displayed alternatively at twice the refresh rate of the input image.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: December 4, 2018
    Inventors: Darwin Hu, Tsunglu Syu
  • Patent number: 10019967
    Abstract: There is provided an image processing apparatus including an image reception unit configured to receive an image with markers including a sub image and marker pixels each indicating, using a pixel value, a combining ratio of a main image and the sub image that is combined with the main image, a combining ratio acquisition unit configured to acquire the combining ratio indicated by a pixel value of the marker pixel in the image with markers, and a combining unit configured to combine the main image and the sub image based on the acquired combining ratio.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: July 10, 2018
    Assignee: Saturn Licensing LLC
    Inventors: Takumi Takahashi, Nobuyuki Asakura, Etsuro Yamauchi, Junya Kameyama
  • Patent number: 9972070
    Abstract: Low spatial frequencies of an original image and an upscaled filtered image are analyzed. Differences will be observed in the low frequency components of the two images in the general case since the pixel art upscaler filter as a side effect introduces low frequency changes. A modification to images produced by the PAU is applied to attempt to match the brightness of the original images in the low frequency spectrum. From a viewer perspective (e.g., based on typical blurring visual effects), the original image and the modified filtered image will look the same—demonstrating that there is no low frequency brightness creep or resulting increased photosensitivity concerns.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: May 15, 2018
    Assignee: Nintendo Co., Ltd.
    Inventors: Sébastien Guido, Janos Boudet
  • Patent number: 9961367
    Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: May 1, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Virginie Drugeon, Youji Shibahara, Takahiro Nishi, Hisao Sasai, Kyoko Tanikawa
  • Patent number: 9860531
    Abstract: An encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal integrated candidate block for a current block based on a motion vector integration technology; determining, based a prediction direction of the optimal integrated candidate block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated, thereby improving encoding efficiency, avoiding an increase in data bandwidth, improving decoding quality, and reducing calculation complexity.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 2, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sixin Lin, Mingyuan Yang
  • Patent number: 9819900
    Abstract: Method and apparatus for de-interlacing a television signal are provided. The method includes: determining whether a pixel to be interpolated is in a strictly static mode; if it is in the strictly static mode, obtaining a pixel value of a first pixel in a previous field which corresponds to the pixel to be interpolated, and setting a pixel value of the pixel to be interpolated to be equal to the pixel value of the first pixel; if it is not in the strictly static mode, determining gradient bands along a plurality of directions by taking the pixel to be interpolated as a center, determining a direction of the pixel to be interpolated based on the gradient bands, and setting the pixel value of the pixel to be interpolated by interpolation based on the direction. Accuracy of the pixel value of the pixel to be interpolated may be improved.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 14, 2017
    Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.
    Inventors: Hong Zhou, Hu Wei, Xiaowei Luo, Sen Wang, Minjie Chen, Jun Zhu, Duan Xue, Fuhuei Lin
  • Patent number: 9641861
    Abstract: An integrated circuit capable of video processing and a method thereof is disclosed. The integrated circuit comprises an image information generator, an adaptive motion vector (MV) candidate generator, and a block matching unit. The image information generator receives reference and current video data to determine image information. The adaptive MV candidate generator, coupled to the image information generator, receives the reference and current video data to generate spatial and temporal MV candidates, and generates an updated MV candidate based on the image information. The block matching unit, coupled to the adaptive MV candidate generator, receives the spatial and temporal MV candidates and the updated MV candidate and performs block matching to determine an output MV therefrom.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: May 2, 2017
    Assignee: MEDIATEK INC.
    Inventors: Te-Hao Chang, Siou-Shen Lin, Chin-Chuan Liang
  • Patent number: 9565428
    Abstract: A method and apparatus for chroma intra prediction for a current chroma block with reduced line memory requirement are disclosed. The chroma intra predictor is derived from reconstructed luma pixels of a current luma block using a model with parameters. In various embodiments according to the present invention, the derivation of the parameters relies on a reconstructed luma pixel set corresponding to neighboring reconstructed luma pixels from causal luma neighboring areas of the current luma block, wherein said causal luma neighboring areas include a first area corresponding to reconstructed luma pixels above a horizontal luma block boundary on a top side of the current luma block, and wherein the reconstructed luma pixels from the first area that are included in the reconstructed luma pixel set are from a luma pixel line immediately above the horizontal luma block boundary.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: February 7, 2017
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Mei Guo, Xun Guo, Yu-Wen Huang, Shaw-Min Lei
  • Patent number: 9552630
    Abstract: Motion de-blurring systems and methods are described herein. One motion de-blurring system includes an image sensing element, one or more motion sensors in an imaging device, a lens element that undergoes motion during a capture of an image by the sensing element, and a de-blurring element to de-blur the image captured by the sensing element via de-convolving a Point Spread Function (PSF).
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: January 24, 2017
    Assignee: Honeywell International Inc.
    Inventors: Scott McCloskey, Kelly Muldoon, Sharath Venkatesha
  • Patent number: 9510008
    Abstract: A method, system and computer program for decompressing video data, storing the compressed video data in such a way that random access is possible and the data can be mapped efficiently into existing memory systems and interface protocols. The compression is accomplished via lossless compression using an algorithm optimized for video data. Due to the compressed format, data transmission consumes less bandwidth than using uncompressed data and prevents degradation in the decoded video.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: November 29, 2016
    Assignee: ENTROPIC COMMUNICATIONS, LLC
    Inventors: Matthew Damian Bates, Mark Alan Baur
  • Patent number: 9438908
    Abstract: A method to produce a frame of video data includes receiving original frame true motion information, original frame object boundary information, and original frame layer information for at least two original frames of video data, and generating interpolation phase block-level motion and interpolation phase pixel-level layer information from the original frame block-level true motion information, original frame pixel-level object boundary information, and original frame pixel-level layer information for the original frame.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: September 6, 2016
    Assignee: PIXELWORKS, INC.
    Inventors: Xiaojie Sheng, Neil Woodall, Bob Zhang, Guohua Cheng, Yue Ma
  • Patent number: 9430713
    Abstract: According to an aspect of the present invention, there is provided a method of detecting a repetitive pattern. The method includes: clustering a plurality of pixels that form an input image according to color and obtaining one or more color layers composed of pixels included in each cluster; selecting one or more effective layers from the color layers, wherein each of the effective layers includes a predetermined number or more of pixel components, each composed of a plurality of pixels and having a predetermined shape or a predetermined size of area; selecting a unit pattern repeatedly disposed at different locations in each effective layer from the pixel components included in each effective layer; calculating distances between the unit patterns in each effective layer; and calculating a repetition cycle of the unit pattern of the input image based on the calculated distances in each effective layer.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: August 30, 2016
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Sudhakar Sah, Sang Hak Lee, Jong Hang Kim, Seong Jong Ha, Yu Ri Ahn, Yeon Hee Kwon
  • Patent number: 9432624
    Abstract: This disclosure describes an apparatus (106) for improving performance of a multipoint control unit (210). The apparatus (106) provides a video stream manipulator (208) and a multipoint control unit (210). The video stream manipulator (208) may encode one or more video streams in a predetermined video codec standard separately. Each of the encoded video streams includes at least one encoded video frame made of a plurality of macroblocks, where the macroblocks are segregated into a predetermined number of macroblock lines. The multipoint control unit (210) may assemble predetermined number of macroblock lines from each of the encoded video streams in a predetermined composition.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 30, 2016
    Assignee: ClearOne Communications Hong Kong Ltd.
    Inventor: Oren J. Maurice
  • Patent number: 9384561
    Abstract: A method of selecting at least one region of interest within an image includes the selection of a preliminary region having a preliminary border. The selection uses one or more characteristics of the image. An inner probability distribution of color components is determined within the preliminary region and an outer probability distribution of color components outside the preliminary region. The preliminary border is adjusted in dependence on the probability distributions, the adjusted border defining the at least one region of interest.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 5, 2016
    Assignee: APICAL LTD
    Inventor: Ilya Romanenko
  • Patent number: 9349204
    Abstract: Scene information describing a three-dimensional virtual space and/or virtual objects within the virtual space may be used to generate an animated video. A user interface may be presented to a user. The user interface may be configured to receive user entry and/or selection of parameter values for one or more video parameters. The user-provided parameter values may facilitate one or more of determining frames of the video, rendering images for the frames, generating a video using the rendered images, and/or other operations.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: May 24, 2016
    Assignee: HOUSE OF MOVES, INC.
    Inventors: Alberto Menache, Kilo Akuna
  • Patent number: 9288432
    Abstract: A motion vector detector detects, using pixel data in at least two real frames in an input video signal, a motion vector MV1 necessary for generating interpolated pixel data forming an interpolated frame to be inserted between the two real frames. A motion vector corrector corrects the motion vector MV1 to decrease the magnitude of motion vector MV1 when the magnitude of motion vector MV1 exceeds a predetermined threshold, and outputs it as a motion vector MV3.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 15, 2016
    Assignee: JVC KENWOOD CORPORATION
    Inventors: Tomoyuki Shishido, Hiroshi Noguchi, Hideki Aiba
  • Patent number: 9277168
    Abstract: A new motion adaptive deinterlacing method and apparatus detects motion corresponding to a pixel to be interpolated. The method and apparatus generates a subframe level motion map based on at least a portion of a current field and at least a portion of a plurality of previous fields. Based on the generated subframe level motion map, the apparatus and method generates a plurality of motion vectors associated with the subframe level motion map by applying a plurality of motion masks, associated with the pixel to be interpolated, to the subframe level motion map. The apparatus and method further generates deinterlaced content by adaptively interpolating the pixel to be interpolated for the current field based on the plurality of motion vectors produced by applying a plurality of motion masks to the subframe level motion map.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: March 1, 2016
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Rex George, Daniel P. Shimizu, Sateesh Lagudu, Niranjan P. Dasiga, Sai Kishore Reddipalli
  • Patent number: 9264128
    Abstract: A receiving circuit, method for receiving a signal, and use of a detection circuit and a control circuit of a receiving circuit of a node of a radio network is provided to deactivate an analog signal processing and/or determination of digital data from a signal received over an antenna of the node, when a stored current frame of the digital data has been recognized as valid, and to activate the analog signal processing and/or the determination, when the transmission of the current frame over an interface of the control circuit has been confirmed, whereby the control circuit is connected to the detection circuit and/or an input circuit for deactivation and activation, and whereby the detection circuit is formed to determine the digital data from the received signal.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: February 16, 2016
    Assignee: Atmel Corporation
    Inventors: Sascha Beyer, Tilo Ferchland, Thomas Hanusch
  • Patent number: 9262809
    Abstract: Methods and apparatus for filtering noise of low frequency from an image of the surface characteristics of an object expressed with reference to orthogonal first and second axis and obtained with linear light scanning, involve calculating a difference between pixel values of an image column vector along the second axis adjacent a selected reference image column vector and respective pixel values of the selected reference image column vector to obtain a pixel difference vector. The pixel difference values not mainly associated with a corresponding atypical change of surface characteristics as compared with noise are then selected, and a mean value from the selected pixel difference values are calculated as an estimated value of the noise. The estimated noise value are subtracted from the adjacent image column vector to obtain a corrected image column vector.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: February 16, 2016
    Assignee: CENTRE DE RECHERCHE INDUSTRIELLE DU QUEBEC
    Inventors: Richard Gagnon, Jean-Pierre Couturier
  • Patent number: 9213901
    Abstract: A method and system for video-based object tracking includes detecting an initial instance of an object of interest in video captured of a scene being monitored and establishing a representation of a target object from the initial instance of the object. The dominant motion trajectory characteristic of the target object are then determined and a frame-by-frame location of the target object can be collected in order to track the target object in the video.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: December 15, 2015
    Assignee: Xerox Corporation
    Inventors: Edgar A. Bernal, Wencheng Wu, Thomas F. Wade, Daniel Hann
  • Patent number: 9215465
    Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 15, 2015
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Virginie Drugeon, Youji Shibahara, Takahiro Nishi, Hisao Sasai, Kyoko Tanikawa
  • Patent number: 9131127
    Abstract: A method and apparatus is provided for reconstructing video frames that include missing pixels as a result of video stabilization techniques to compensate for camera movement and/or zooming. In one example, the method and apparatus caches transformed frames of video, identifies coordinates of missing pixels in a current transformed frame, and sequentially processes, for only the missing pixel coordinates, the cached transformed frames in reverse chronological order to identify pixels at coordinates in the cached transformed frames having valid data and corresponding to one of the missing pixel coordinates. Upon identifying a pixel having valid data at a coordinate in a cached transformed frame corresponding to a missing pixel coordinate, the method and apparatus inserts the valid data at the missing pixel coordinate.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: September 8, 2015
    Assignee: ATI TECHNOLOGIES, ULC
    Inventors: Yubao Zheng, Zingping Cao
  • Patent number: 9123115
    Abstract: This disclosure describes techniques for estimating a depth of image objects for a two-dimensional (2D) view of a video presentation. For example, an initial indication of depth (e.g., an optical flow) may be determined for a 2D view. The initial indication of depth may be used to estimate global motion, e.g., motion of an observer (e.g., camera), of the 2D view. The initial indication of depth may be modified based on the estimation of global motion to create a global motion-adjusted indication of depth. The global motion-adjusted depth indication may be used to create a depth map for the 2D view, which may be used to generate an alternative view of the video presentation that may be used to display a three-dimensional (3D) video presentation.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: September 1, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Rong Zhang, Ying Chen, Marta Karczewicz
  • Patent number: 9076230
    Abstract: A method for interpolating an image field with image processing circuitry includes identifying, from a first row in the image field, a pixel to be interpolated. Edge direction vectors from the identified pixel and a plurality of neighboring pixels in a second row of the image field are determined. The edge direction vectors may then be combined to produce an interpolated pixel. The edge direction vectors may be combined such that the pixel is interpolated along each edge direction vector to obtain multiple interpolated pixel values. The pixel may be interpolated based on a weighted average of the interpolated pixel values.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: July 7, 2015
    Assignee: Altera Corporation
    Inventor: Jon Michael Harris
  • Patent number: 9042680
    Abstract: A direction of regularity, which minimizes a directional energy computed from pixel values of consecutive first and second frames of an input video sequence, is respectively associated with each pixel of the first frame and with each pixel of the second frame. Another direction of regularity (vz), which minimizes a directional energy computed from pixel values of the first and second frames, is also associated with an output pixel (z) of a frame of an output video sequence, located in time between the first and second frames. For processing such output pixel, the respective minimized directional energies for the output pixel, at least one pixel (z?) of the first frame and at least one pixel (z?) of the second frame are compared to control an interpolation performed to determine a value of the output pixel. The interpolation uses pixel values from at least one of the first and second frames of the input video sequence depending on the comparison of the minimized directional energies.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 26, 2015
    Assignee: ZORAN (FRANCE) S.A.
    Inventor: Joan Bruna Estrach
  • Patent number: 9041814
    Abstract: An automatic tracking camera system includes: a rotating unit for panning and tilting an image pickup unit including a lens apparatus and an image pickup apparatus; a tracking object detector; a motion vector detector for detecting a motion vector of the object to be tracked; a capture position setting unit for setting a capture position of the object to be tracked in the picked up image; and a controller for controlling drive of the rotating unit. The controller controls the rotating unit in a capture mode to capture the object to be tracked at the capture position based on the motion vector detected by the motion vector detector after the tracking object detector has detected the object to be tracked in the picked up image, and a maintenance mode to continuously capture the object to be tracked at the capture position after the capture mode.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: May 26, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuji Takashima
  • Patent number: 9036082
    Abstract: The present invention is related to line-based motion estimation and compensation in video image data. In particular, by performing the line-based motion estimation, a set of motion vectors for the line-based motion compensation is provided. By use of the provided set of motion vectors, the line-based motion compensation is performed by interpolating the image data of the current field/frame, wherein an interpolated image data of the image data of the current field/frame is provided as result of the performing of the line-based motion compensation. Then, it is checked, whether a region of the interpolated image data of the current field/frame comprises at least one pixel of the region, which was interpolated according to a motion vector from the set of motion vectors, which is indicated as being not reliable for the line-based motion compensation. If so, a blurring of the corresponding region is performed according to the present invention.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 19, 2015
    Assignee: NXP, B.V.
    Inventor: Volker Blume
  • Patent number: 9035968
    Abstract: A method for creating a distance dependent display that comprises providing an image separating mask having a plurality precision slits arranged in a pattern, generating an interlaced image from a plurality of images according to the pattern, and combining the interlaced image and the image separating mask to allow an observer to view substantially separately each the image from a respective of a plurality of different distances from the image separating mask.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: May 19, 2015
    Assignee: HumanEyes Technologies Ltd.
    Inventor: Assaf Zomet
  • Patent number: 8976186
    Abstract: This invention provides an image processing apparatus and an image processing method. By calculation of the pixel difference that is the difference of each corresponding pixels between the current image and the previous image with its neighbor pixel difference, this invention can determine the blending value.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 10, 2015
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chung-Ping Yu, Cheng-Han Li
  • Patent number: 8964117
    Abstract: A frame construction engine constructs a first frame of deinterlaced video and a second frame of deinterlaced video based on a first field of interlaced video and based on a second field of interlaced video, independent of any other fields of interlaced video. The frame construction engine constructs the first frame of deinterlaced video by assigning pixel values from the first field of interlaced video to corresponding pixel locations in the first frame. The frame construction engine constructs the second frame of deinterlaced video by assigning pixel values from the second field of interlaced video to corresponding pixel locations in the second frame. Missing pixel locations in each of the frames are selected from a corresponding field of spatially interpolated pixel values or from an opposite field of deinterlaced video.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 24, 2015
    Assignee: ATI Technologies ULC
    Inventor: Jeff X. Wei
  • Patent number: 8953097
    Abstract: Provided is a motion vector estimation device capable of estimating the motion vector with less computation. A motion vector estimation device for estimating, by means of repetitive calculations, the motion vector of each of a plurality of pixel groups which is contained in an input image and which each contains one or more pixels, the motion vector estimation device being provided with a means for making repetitive calculations with regard to the pixel groups that do not have a high frequency component from among the plurality of pixel groups contained in the input image after making repetitive calculations with regard to the pixel groups that have a high frequency component from among the plurality of pixel groups contained in the input image.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 10, 2015
    Assignee: NEC Corporation
    Inventor: Akihiko Iketani
  • Patent number: 8937683
    Abstract: The present invention relates to systems and methods for inverse telecine or video de-interlacing for picture quality improvement on set-top-box and TV products. The system comprises a film mode detector at the picture or sequence level, a global mixed video and film content detector at the region, picture, or sequence level on top of the detected film content, and a local video content detector at pixel level on top of the detected mixed video and film content. Inverse telecine processing is applied on detected film content fading in with a locally de-interlaced local video content. The invention further provides an apparatus and method for globally detecting mixed video and film content at region, picture, or sequence level. Such apparatus and method comprise a plurality of detectors for robustness and increased detection accuracy.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 20, 2015
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventors: Xiaoyun Deng, Lucas Hui
  • Patent number: 8934055
    Abstract: A method of performing motion compensation includes dividing a current frame of video data into blocks, and clustering the blocks based on motion vectors.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: January 13, 2015
    Assignee: Pixelworks, Inc.
    Inventors: Xiaojie Sheng, Neil Woodall, Yue Ma, Bob Zhang, Guohua Cheng
  • Patent number: 8934054
    Abstract: A frame rate conversion processing system can generate a second row of frames that is different from a first row of frames in the number of frames. The frame rate conversion processing system includes a luminance change detection unit configured to calculate a luminance change value of the first row of frames based on luminance changes in the entire area or a partial area of the frames that constitutes the first row of frames and configured to compare the calculated luminance change value with a predetermined value. The frame rate conversion processing system further includes a correction unit configured to correct the luminance of the entire area or a partial area of the frames that constitutes the second row of frames according to a comparison result obtained by the luminance change detection unit.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: January 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takenori Ohno
  • Patent number: 8934534
    Abstract: The present invention relates to a method for providing reliable motion vectors, comprising the steps of determining motion vectors between two image frames with backward and forward estimation, comparing backward estimation motion vectors and forward estimation motion vectors, and detecting unreliable motion vectors based on the comparison result. The present invention further relates to a system for providing reliable motion vectors.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 13, 2015
    Assignee: Sony Corporation
    Inventors: Yalcin Incesu, Volker Freiburg, Oliver Erdler
  • Patent number: 8922711
    Abstract: The present invention provides a method and apparatus for de-interlacing video data by using a horizontal motion vector of a horizontal motion between fields. The horizontal motion regarding a target pixel of a frame is compensated if the horizontal motion vector is found to be substantially not null according to the pixels residing in the fields determined by the horizontal motion vector. This results in an upgraded quality of image after the de-interlacing process.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: December 30, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Ching-Hua Chang, Wen-Tsai Liao, Po-Wei Chao
  • Patent number: 8922712
    Abstract: In an embodiment, there is provided a video processing component comprising a compensation engine configured to generate pixels of a first video frame from a second video frame based at least in part on specified pixel motion; and an access buffer configured to store pixel data corresponding to pixels of the second video frame for reference by the compensation engine, wherein the pixel data is stored by the access buffer at different vertical resolutions depending on vertical distances of the pixels corresponding to the pixel data from a target pixel that is indicated by the compensation engine.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: December 30, 2014
    Assignee: Marvell International Ltd.
    Inventor: Vipin Namboodiri
  • Patent number: 8917354
    Abstract: A method for detecting motion in video fields of video data, comprises the steps of: calculating texture information for a pixel in the video fields; determining a threshold value as a function of the calculated texture information; calculating a differential value for the pixel; and detecting motion in the video fields as a function of the determined threshold value and the calculated differential value.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: December 23, 2014
    Assignee: Amlogic Co., Ltd.
    Inventors: Dongjian Wang, Xin Hu, Xuyun Chen
  • Patent number: 8913186
    Abstract: A device for use in conjunction with a video processing device includes an adaptive filter for processing input pictures into selectively filtered pictures, based on a filter motion data. A deinterlacer selectively interpolates the selectively filtered pictures into selectively deinterlaced pictures, based on deinterlace motion data. A motion detector generates the filter motion data and the deinterlace motion data, based on detecting motion in the input pictures.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: December 16, 2014
    Assignee: ViXS Systems, Inc.
    Inventor: Hui Zhou
  • Patent number: 8913185
    Abstract: The present invention provides a multi-level bidirectional motion estimation method and device searching for matched blocks in a current frame and a previous frame respectively by using M1×M1 blocks of a to-be-interpolated frame as a mirror center, where the first to-be-determined matched block pair is a pair of matched blocks with a minimum sum of binary absolute difference SHAD value among all pairs of matched blocks searched out in the current frame and the previous frame; and if determined that the SHAD value of the first to-be-determined matched block pair is greater than or equal to an SHAD threshold, splitting the M1×M1 blocks into M2×M2 blocks, and searching for matched blocks again in the current frame and the previous frame respectively by using the M2×M2 blocks of the to-be-interpolated frame as a mirror center. Therefore, accuracy of motion estimation can be improved effectively, and image quality can be improved.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: December 16, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaojun Wu, Benshun Yi, Jinsheng Xiao
  • Patent number: 8913184
    Abstract: Systems and methods are provided for detecting sharpness among video fields. In certain implementations of the systems and methods, a plurality of video fields is received and a sharpness metric for each of the plurality of video fields is determined. The sharpness metric of a first video field is compared to the sharpness metric of a second video field among the plurality of video fields and a video field source of the first video field and the second video field is determined based on the comparison.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: December 16, 2014
    Assignee: Marvell International Ltd.
    Inventors: Shilpi Sahu, Panikumar Gururaj Kallamballe, Sujith Srinivasan
  • Patent number: 8908107
    Abstract: A remote control system includes a remote control device and an electronic device. The remote control device includes an input element, a wireless transmitter to transmit an absolute coordinate signal and a motion signal and a control unit electrically connected to the input element and the wireless transmitter. The electronic device includes a wireless receiver and a display screen. The wireless receiver receives the absolute coordinate signal and the motion signal, and displays the absolute coordinate signal at the display screen via a cursor. When the electronic device does not receive the motion signal, the absolute coordinate signal is not operated on an application program of the electronic device. When the electronic device receives the motion signal, the absolute coordinate signal is operated on the application program.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: December 9, 2014
    Assignee: ASUSTeK Computer Inc.
    Inventor: Cheng-Shen Wu
  • Patent number: 8902358
    Abstract: A deinterlacing apparatus includes a buffer to receive a plurality of consecutive fields of an interlaced video and a field combination module coupled to the buffer to deinterlace the interlaced video in accordance with cadence of the interlaced video. The deinterlacing apparatus also includes a cadence detection module to detect the cadence by (1) causing each of the fields to be combined with its preceding field into a frame and with its subsequent field into another frame to obtain a plurality of combined frames, (2) determining a comb factor of each of the combined frames to obtain a sequence of comb factors of the combined frames, and (3) determining if the sequence of comb factors of the combined frames follows a pre-determined repeating pattern. A cadence detection method is also described.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 2, 2014
    Assignee: Altera Corporation
    Inventors: Jon Michael Harris, Vivek Gowri-Shankar, Boon Hong Oh
  • Patent number: 8902359
    Abstract: Systems and methods are provided for determining pixels in an interpolated frame. A motion vector field is determined based on movement of pixels between first and second frames. A region of the motion vector field is clustered based on similarity of motion vectors of the motion vector field within the region. A region of discontinuity is identified comprising a portion of the motion vector field not belonging to a cluster. A determination is made as to whether the region of discontinuity is an occlusion region or a reveal region. A portion of the region of discontinuity in the interpolated frame is filled using pixel data from the first frame when the region of discontinuity is an occlusion region, and a portion of the region of discontinuity in the interpolated frame is filled using pixel data from the second frame when the region of discontinuity is a reveal region.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: December 2, 2014
    Assignee: Marvell International Ltd.
    Inventors: Mainak Biswas, Vipin Namboodiri
  • Patent number: 8891012
    Abstract: A method for converting an interlaced video signal to a non-interlaced video signal, comprising, for each pixel in each missing line of a video field in the interlaced video signal: deriving a correlation data set comprising correlation data for each of a plurality of possible interpolation schemes to be used in reconstructing the pixel; dividing each correlation data set into a plurality of correlation data zones; selecting an interpolation scheme from each correlation data zone; reconstructing the pixel using a blend of the selected interpolation schemes, wherein the blend for each pixel subsequent to a first pixel is determined based on the result of a comparison between the selected interpolation schemes and based on the blend used for a preceding pixel.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: November 18, 2014
    Assignee: Imagination Technologies, Limited
    Inventor: Paolo Fazzini
  • Publication number: 20140327820
    Abstract: Provided is a motion vector estimation device capable of estimating the motion vector with less computation. A motion vector estimation device for estimating, by means of repetitive calculations, the motion vector of each of a plurality of pixel groups which is contained in an input image and which each contains one or more pixels, the motion vector estimation device being provided with a means for making repetitive calculations with regard to the pixel groups that do not have a high frequency component from among the plurality of pixel groups contained in the input image after making repetitive calculations with regard to the pixel groups that have a high frequency component from among the plurality of pixel groups contained in the input image.
    Type: Application
    Filed: October 25, 2012
    Publication date: November 6, 2014
    Applicant: NEC CORPORATION
    Inventor: Akihiko Iketani
  • Patent number: 8872968
    Abstract: A method of determining a motion value for a missing pixel in an interlaced video field using an adaptive window. The method includes computing a first mean absolute difference (MAD) value for a pixel based on a 1×5 window, computing a second MAD value for the pixel using a 3×5 window, and selectively blending the first and second MAD values to form a resultant motion value.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 28, 2014
    Assignee: CSR Technology Inc.
    Inventor: Monica Man Kay Tang
  • Patent number: RE45306
    Abstract: An image processing method and device thereof are provided. The device includes a capture device and a processor. The capture device is adopted for receiving a plurality of frames and comparing at least two adjacent frames to obtain an area selection signal according to a differential value there-between. The processor is connected to the capture device for receiving the area selection signal and to separate each of the adjacent frames into at least two areas. Each of the areas of the adjacent frames is performed by an image processing step respectively, and then the images of the areas are combined to obtain a resulted frame.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: December 30, 2014
    Assignee: Novatek Microelectronics Corp.
    Inventors: Tsui-Chin Chen, Dze-Chang Wang, Hsiao-Ming Huang, Chang-Lun Chen, Ho-lin Wang, Chui-Hsun Chiu
  • Patent number: RE46468
    Abstract: Methods for motion estimation with adaptive motion accuracy of the present invention include several techniques for computing motion vectors of high pixel accuracy with a minor increase in computation. One technique uses fast-search strategies in sub-pixel space that smartly searches for the best motion vectors. An alternate technique estimates high-accurate motion vectors using different interpolation filters at different stages in order to reduce computational complexity. Yet another technique uses rate-distortion criteria that adapts according to the different motion accuracies to determine both the best motion vectors and the best motion accuracies. Still another technique uses a VLC table that is interpreted differently at different coding units, according to the associated motion vector accuracy.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: July 4, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Jordi Ribas-Corbera, Jiandong Shen