公开(公告)号：US20220141472A1

公开(公告)日：2022-05-05

申请号：US17086160

申请日：2020-10-30

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Shu-Hsien Wu ,  Crystal Yeong-Pian Sau ,  Yang Liu ,  Wei Gao ,  Feng Pan ,  Ihab M. A. Amer ,  Ying Luo ,  Edward A. Harold ,  Gabor Sines ,  Ehsan Mirhadi

IPC: H04N19/186 ,  H04N19/182 ,  H04N19/136

Abstract: An encoding method is provided which includes receiving a plurality of images, obtaining values of elements in a portion of the images, sorting the elements according to different values of the elements, sorting the elements according to a number of occurrences of the different values and encoding the elements using a subset of the different values having corresponding numbers of occurrences that are higher than corresponding numbers of occurrences of other values. Examples also include a processing device and method for use with palette mode encoding in which the elements are a portion of pixels in images and the values are color values of the portion of pixels in the images.

公开(公告)号：US10368087B2

公开(公告)日：2019-07-30

申请号：US15271055

申请日：2016-09-20

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Ihab Amer ,  Gabor Sines ,  Edward Harold ,  Jinbo Qiu ,  Lei Zhang ,  Yang Liu ,  Zhen Chen ,  Ying Luo ,  Shu-Hsien Wu ,  Zhong Cai

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/172 ,  H04N19/57 ,  H04N19/433

Abstract: A processing apparatus is provided that includes an encoder configured to encode current frames of video data using previously encoded reference frames and perform motion searches within a search window about each of a plurality of co-located portions of a reference frame. The processing apparatus also includes a processor configured to determine, prior to performing the motion searches, which locations of the reference frame to reload the search window according to a threshold number of search window reloads using predicted motions of portions of the reference frame corresponding to each of the locations. The processor is also configured to cause the encoder to reload the search window at the determined locations of the reference frame and, for each of the remaining locations of the reference frame, slide the search window in a first direction indicated by the location of the next co-located portion of the reference frame.

公开(公告)号：US12132917B2

公开(公告)日：2024-10-29

申请号：US17029730

申请日：2020-09-23

Applicant: ATI TECHNOLOGIES ULC

Inventor： Wei Gao ,  Yang Liu ,  Ihab Amer ,  Ying Luo ,  Shu-Hsien Wu ,  Edward Harold ,  Feng Pan ,  Crystal Sau ,  Gabor Sines

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/96

CPC classification number: H04N19/186 ,  H04N19/119 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/30 ,  H04N19/96

Abstract: An encoder encodes an image portion by recursively partitioning the portion into a partitioning hierarchy of levels. The top level has a single block representing the entire portion and each lower level has four smaller blocks representing a corresponding larger block at a higher level. A palette table is generated for each bottom-level block based on the pixels of the associated block. For each successively higher level, the encoder generates a palette table for each current-level block by selecting palette colors based on the palette colors from the four palette tables for the associated four blocks at the next-lowest level. A color index map is then generated based on a final palette table selected from the palette tables generated for the partitioning hierarchy. A representation of the portion is then encoded using the final palette table and the color index map to generate a corresponding segment of an encoded bitstream.

公开(公告)号：US20180084270A1

公开(公告)日：2018-03-22

申请号：US15271055

申请日：2016-09-20

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Ihab Amer ,  Gabor Sines ,  Edward Harold ,  Jinbo Qiu ,  Lei Zhang ,  Yang Liu ,  Zhen Chen ,  Ying Luo ,  Shu-Hsien Wu ,  Zhong Cai

IPC: H04N19/513 ,  H04N19/172 ,  H04N19/105

CPC classification number: H04N19/57 ,  H04N19/433

Abstract: A processing apparatus is provided that includes an encoder configured to encode current frames of video data using previously encoded reference frames and perform motion searches within a search window about each of a plurality of co-located portions of a reference frame. The processing apparatus also includes a processor configured to determine, prior to performing the motion searches, which locations of the reference frame to reload the search window according to a threshold number of search window reloads using predicted motions of portions of the reference frame corresponding to each of the locations. The processor is also configured to cause the encoder to reload the search window at the determined locations of the reference frame and, for each of the remaining locations of the reference frame, slide the search window in a first direction indicated by the location of the next co-located portion of the reference frame.

公开(公告)号：US20240223768A1

公开(公告)日：2024-07-04

申请号：US18089928

申请日：2022-12-28

Applicant: ATI TECHNOLOGIES ULC

Inventor： Yuxin Chen ,  Ying Luo ,  Edward Harold ,  Shu-Hsien Wu ,  Xinghai Li ,  Razvan F. Dan-Dobre ,  Min Wang ,  Jianbin Xiao ,  Amal Khailtash ,  Yin Xia Yang ,  Kai Sun

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/53

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/53

Abstract: The present disclosure provides techniques for implementing a hierarchical and partitional integer motion estimation search (IMES) architecture using a search engine that is configurable based on a content of a plurality of frames in a video sequence. For example, the techniques include identifying, based on the plurality of frames, one or more search parameters for the hierarchical and partitional motion estimation, where the one or more search parameters are based on a content indicative of motion features tracked across the video sequence. The hierarchical and partitional motion estimation, which includes at least one decimated motion estimation search followed by a full-pixel level search, is performed based on the one or more identified search parameters to determine an integer (or pixel-level) motion vector.

公开(公告)号：US11575916B2

公开(公告)日：2023-02-07

申请号：US17086160

申请日：2020-10-30

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Shu-Hsien Wu ,  Crystal Yeong-Pian Sau ,  Yang Liu ,  Wei Gao ,  Feng Pan ,  Ihab M. A. Amer ,  Ying Luo ,  Edward A. Harold ,  Gabor Sines ,  Ehsan Mirhadi

IPC: H04N19/186 ,  H04N19/136 ,  H04N19/182 ,  H04N19/189 ,  H04N19/593

Abstract: An encoding method is provided which includes receiving a plurality of images, obtaining values of elements in a portion of the images, sorting the elements according to different values of the elements, sorting the elements according to a number of occurrences of the different values and encoding the elements using a subset of the different values having corresponding numbers of occurrences that are higher than corresponding numbers of occurrences of other values. Examples also include a processing device and method for use with palette mode encoding in which the elements are a portion of pixels in images and the values are color values of the portion of pixels in the images.