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公开(公告)号:US20210099699A1
公开(公告)日:2021-04-01
申请号:US16588772
申请日:2019-09-30
Applicant: ATI Technologies ULC
Inventor: Feng Pan , Wei Gao , Yang Liu , Crystal Yeong-Pian Sau , Haibo Liu , Edward A. Harold , Ying Luo , Ihab Amer , Gabor Sines
IPC: H04N19/115 , H04N19/186 , H04N19/182 , H04N19/176
Abstract: Systems, apparatuses, and methods for calculating multi-pass histograms for palette table derivation are disclosed. An encoder calculates a first histogram for a first portion of most significant bits (MSBs) of pixel component values of a block of an image or video frame. Then, the encoder selects a given number of the highest pixel count bins from the first histogram. The encoder then increases the granularity of these selected highest pixel count bins by evaluating one or more additional bits from the pixel component values. A second histogram is calculated for the concatenation of the original first portion MSBs from the highest pixel count bins and the one or more additional bits, and the highest pixel count bins are selected from the second histogram. A palette table is derived based on these highest pixel count bins selected from the second histogram, and the block is encoded using the palette table.
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公开(公告)号:US20190158704A1
公开(公告)日:2019-05-23
申请号:US15816765
申请日:2017-11-17
Applicant: ATI Technologies ULC
Inventor: Gabor Sines , Kyle Plumadore , Yang Liu , Ihab Amer , Boris Ivanovic
IPC: H04N1/60 , G06T1/20 , G06T9/00 , A63F13/5258
Abstract: Systems, apparatuses, and methods for rendering images directly to a video encoder are disclosed. A game engine includes an embedded rendering unit configured to render images in different color spaces depending on the mode. The rendering unit renders images for a first color space only to be driven directly to a display while operating in a first mode. The rendering unit renders images for a second color space only which are provided directly to a video encoder while operating in a second mode. In a third mode, the rendering unit renders images for both color spaces. In one embodiment, the first color space is RGB and the second color space is YUV. The game engine also generates a plurality of attributes associated with each rendered image and the video encoder encodes each rendered image into an encoded bitstream based on the attributes associated with the rendered image.
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公开(公告)号:US20190104321A1
公开(公告)日:2019-04-04
申请号:US15720771
申请日:2017-09-29
Applicant: ATI Technologies ULC
IPC: H04N19/61 , H04N19/31 , H04N19/23 , H04N19/105
Abstract: Encoding video data includes accessing video information, and encoding macroblocks in an intra refresh (IR) region of a video frame of the video information with restricted quantization parameters (QPs) based on QPs of macroblocks within at least one of a non-IR region of the video frame and a co-located region of a neighboring video frame in a temporal domain.
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公开(公告)号:US20190104311A1
公开(公告)日:2019-04-04
申请号:US15721078
申请日:2017-09-29
Applicant: ATI Technologies ULC
Inventor: Ihab Amer , Boris Ivanovic , Gabor Sines , Yang Liu , Ho Hin Lau , Haibo Liu , Kyle Plumadore
IPC: H04N19/137 , H04N19/115
Abstract: Systems, apparatuses, and methods for encoding bitstreams of uniquely rendered video frames with variable frame rates are disclosed. A rendering unit and an encoder in a server are coupled via a network to a client with a decoder. The rendering unit dynamically adjusts the frame rate of uniquely rendered frames. Depending on the embodiment, the rendering unit conveys a constant frame rate to the encoder by repeating some frames or the rendering unit conveys a variable frame rate to the encoder by conveying only uniquely rendered frames to the encoder. Depending on the embodiment, the encoder conveys a constant frame rate bitstream to the decoder by encoding repeated frames as skip frames, or the encoder conveys a variable frame rate bitstream to the decoder by dropping repeated frames from the bitstream.
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公开(公告)号:US12075065B2
公开(公告)日:2024-08-27
申请号:US17465712
申请日:2021-09-02
Applicant: ATI Technologies ULC
Inventor: Feng Pan , Wei Gao , Yang Liu , Crystal Yeong-Pian Sau , Haibo Liu , Edward A. Harold , Ying Luo , Ihab Amer , Gabor Sines
IPC: G06K9/46 , G06T5/40 , H04N19/182 , H04N19/186 , H04N19/423
CPC classification number: H04N19/182 , G06T5/40 , H04N19/186 , H04N19/423
Abstract: Systems, apparatuses, and methods for performing parallel histogram calculation with application to palette table derivation are disclosed. An encoder calculates a first histogram for a first portion of pixel component value bits of a block of pixels. Then, the encoder selects a first number of the highest pixel count bins from the first histogram. Also, the encoder calculates a second histogram for a second portion of pixel component value bits of the block. The encoder selects a second number of the highest pixel count bins from the second histogram. A third histogram is calculated from the concatenation of bits assigned to the first and second number of bins, and the highest pixel count bins are selected from the third histogram. A palette table is derived based on these highest pixel count bins selected from the third histogram, and the block of pixels is encoded using the palette table.
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公开(公告)号:US12047565B2
公开(公告)日:2024-07-23
申请号:US17385030
申请日:2021-07-26
Applicant: ATI Technologies ULC
Inventor: Feng Pan , Wei Gao , Yang Liu , Crystal Yeong-Pian Sau , Haibo Liu , Edward A. Harold , Ying Luo , Ihab Amer , Gabor Sines
IPC: H04N19/115 , H04N19/176 , H04N19/182 , H04N19/186
CPC classification number: H04N19/115 , H04N19/176 , H04N19/182 , H04N19/186
Abstract: Systems, apparatuses, and methods for calculating multi-pass histograms for palette table derivation are disclosed. An encoder calculates a first histogram for a first portion of most significant bits (MSBs) of pixel component values of a block of an image or video frame. Then, the encoder selects a given number of the highest pixel count bins from the first histogram. The encoder then increases the granularity of these selected highest pixel count bins by evaluating one or more additional bits from the pixel component values. A second histogram is calculated for the concatenation of the original first portion MSBs from the highest pixel count bins and the one or more additional bits, and the highest pixel count bins are selected from the second histogram. A palette table is derived based on these highest pixel count bins selected from the second histogram, and the block is encoded using the palette table.
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公开(公告)号:US11490090B2
公开(公告)日:2022-11-01
申请号:US17138812
申请日:2020-12-30
Applicant: ATI Technologies ULC
Inventor: Mehdi Saeedi , Sai Harshita Tupili , Yang Liu , Mingkai Shao , Gabor Sines
IPC: H04N19/136 , H04N19/103 , H04N19/172
Abstract: Methods and devices are provided for encoding video. By using co-sited gradient and variance values to detect text and line in frames of the video. A processor is configured to receive a plurality of frames of video, determine, for a portion of a frame, a variance of the portion of the frame and a gradient of the portion of the frame and encode, using one of a plurality of different encoding qualities, the portion of the frame based on the gradient and the variance of the portion of the frame. Encoding is performed at both the sub-frame level and frame level. The portion of the frame is classified into one of a plurality of categories based on the gradient and variance and encoded based on the category.
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公开(公告)号:US11830225B2
公开(公告)日:2023-11-28
申请号:US15993074
申请日:2018-05-30
Applicant: ATI TECHNOLOGIES ULC
Inventor: Yang Liu , Ihab Amer , Gabor Sines , Boris Ivanovic , Jinbo Qiu
CPC classification number: G06T9/00 , G06T15/005 , G06T2210/08 , G06T2210/36
Abstract: A feedback processing module includes a memory configured to store feedback received from an encoder. The feedback includes parameters associated with encoded graphics content generated by a graphics engine. The feedback processing module also includes a processor configured to generate configuration information for the graphics engine based on the feedback. The graphics engine is configured to execute a workload based on the configuration information. In some cases, the feedback processing module is also configured to receive feedback from a decoder that is used to decode the graphics content that is encoded by the encoder and generate the configuration information based on the feedback received from the decoder.
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公开(公告)号:US11568527B2
公开(公告)日:2023-01-31
申请号:US17031076
申请日:2020-09-24
Applicant: ATI TECHNOLOGIES ULC
Inventor: Feng Pan , Yang Liu , Crystal Sau , Wei Gao , Mingkai Shao , Dong Liu , Ihab Amer , Gabor Sines
Abstract: Calculating, for each frame of a plurality of frames, a corresponding quality value; calculating, for each frame of the plurality of frames, based on one or more visual attributes of a frame, a weight for the corresponding quality value of the frame; calculating an aggregate quality value for the plurality of frames based on the weight and the corresponding quality value for each frame of the plurality of frames; and providing an assessment of the plurality of frames based on the aggregate quality value for the plurality of frames.
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公开(公告)号:US11490127B2
公开(公告)日:2022-11-01
申请号:US17139372
申请日:2020-12-31
Applicant: ATI Technologies ULC
Inventor: Wei Gao , Ihab Amer , Feng Pan , Mingkai Shao , Crystal Sau , Dong Liu , Gabor Sines , Yang Liu
IPC: H04N19/90 , H04N19/154
Abstract: Methods and apparatus provide cloud-based video encoding that generates encoded video data by one or more encoders in a cloud platform for a plurality of cloud encoding sessions. The methods and apparatus generate operational improvement tradeoff data in response to operational encoding metrics associated with the one or more encoders and change operational characteristics of the one or more encoders for at least one of the cloud encoding sessions based on the operational improvement tradeoff data.
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