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    SPATIAL BLOCK-LEVEL PIXEL ACTIVITY EXTRACTION OPTIMIZATION LEVERAGING MOTION VECTORS
    31.
    发明申请
    SPATIAL BLOCK-LEVEL PIXEL ACTIVITY EXTRACTION OPTIMIZATION LEVERAGING MOTION VECTORS 有权

    公开(公告)号：US20210243450A1

    公开(公告)日：2021-08-05

    申请号：US17236910

    申请日：2021-04-21

    Applicant: ATI Technologies ULC

    Inventor： Mehdi Saeedi ,  Boris Ivanovic

    IPC: H04N19/14 ,  H04N19/513 ,  H04N19/176

    Abstract: Systems, apparatuses, and methods for implementing spatial block-level pixel activity extraction optimization leveraging motion vectors are disclosed. Control logic coupled to an encoder generates block-level pixel activity metrics for a new frame based on the previously calculated block-level pixel activity data from a reference frame. A cost is calculated for each block of a new frame with respect to a corresponding block of the reference frame. If the cost is less than a first threshold, then the control logic generates an estimate of a pixel activity metric for the block which is equal to a previously calculated pixel activity metric for a corresponding block of the reference frame. If the cost is greater than the first threshold but less than a second threshold, an estimate of the pixel activity metric is generated by extrapolating from the previously calculated pixel activity metric.

    RESIDUAL METRICS IN ENCODER RATE CONTROL SYSTEM
    32.
    发明申请
    RESIDUAL METRICS IN ENCODER RATE CONTROL SYSTEM 有权

    公开(公告)号：US20210185313A1

    公开(公告)日：2021-06-17

    申请号：US16715187

    申请日：2019-12-16

    Applicant: ATI Technologies ULC

    Inventor： Boris Ivanovic ,  Mehdi Saeedi

    IPC: H04N19/115 ,  G06N5/04 ,  H04N19/176 ,  H04N19/159

    Abstract: Systems, apparatuses, and methods for using residual metrics for encoder rate control are disclosed. An encoder includes a mode decision unit for determining a mode to be used for generating a predictive block for each block of a video frame. For each block, control logic calculates a residual of the block by comparing an original version of the block to the predictive block. The control logic generates a residual metric based on the residual and based on the mode. The encoder's rate controller selects a quantization strength setting for the block based on the residual metric. Then, the encoder generates an encoded block that represents the input block by encoding the block with the selected quantization strength setting. Next, the encoder conveys the encoded block to a decoder to be displayed. The encoder repeats this process for each block of the frame.

    Server-based encoding of adjustable frame rate content
    34.
    发明授权
    Server-based encoding of adjustable frame rate content 有权

    公开(公告)号：US10523947B2

    公开(公告)日：2019-12-31

    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: H04N7/12 ,  H04N19/137 ,  H04N19/115 ,  H04N19/132 ,  H04N19/177 ,  A63F13/335

    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 operating mode, 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 operating mode, 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.

    APPLICATION SPECIFIC FILTERS FOR HIGH-QUALITY VIDEO PLAYBACK
    35.
    发明申请
    APPLICATION SPECIFIC FILTERS FOR HIGH-QUALITY VIDEO PLAYBACK 审中-公开

    公开(公告)号：US20180343449A1

    公开(公告)日：2018-11-29

    申请号：US15606851

    申请日：2017-05-26

    Applicant: ATI Technologies ULC

    Inventor： Ihab Amer ,  Gabor Sines ,  Boris Ivanovic

    IPC: H04N19/117 ,  G06T5/00 ,  H04N19/42 ,  H04N19/85 ,  H04N19/172 ,  H04N19/136 ,  H04N19/44

    Abstract: Systems, apparatuses, and methods for adaptive use-case based filtering of compressed video streams are disclosed. In one embodiment, a system includes at least a display and a processor coupled to at least one memory device. The system is configured to receive a compressed video stream. For each received frame of the compressed video stream, the system decompresses the compressed video frame into an unfiltered frame. Then, the system can utilize a first filter to filter the unfiltered frame to generate a filtered frame. In one embodiment, the first filter is a de-blocking filter (DBF) combined with a sample adaptive offset (SAO) filter. Also, in this embodiment, the first filter is compliant with a video compression standard. The unfiltered frame and the filtered frame are provided as inputs to a second filter which performs a use-case specific de-noising of the inputs to generate a de-noised frame with reduced artifacts.

    System and method for artifact removal
    37.
    发明授权
    System and method for artifact removal 有权
    系统和方法去除神器

    公开(公告)号：US09344671B2

    公开(公告)日：2016-05-17

    申请号：US13644676

    申请日：2012-10-04

    Applicant: ATI Technologies, ULC

    Inventor： Boris Ivanovic ,  Allen J. Porter ,  Yubao Zheng

    IPC: H04N7/01

    CPC classification number: H04N7/0117

    Abstract: A method and apparatus provide for improving signal quality. The method includes receiving a first media signal, such as a video signal, in a first format, such as 1080p. The provided video signal is one that is created by upsampling a video signal recorded in a format having a lower sampling rate. The method also includes obtaining a second signal indicative of error within the first media signal. The second signal is in a second format, such as the format having a lower sampling rage in which the video signal was recorded. The signal is processed to place the second signal in the format of the first signal. Then, the estimated error signal is combined with the original signal to arrive at an error corrected output.

    Abstract translation: 一种提高信号质量的方法和装置。 该方法包括以诸如1080p的第一格式接收诸如视频信号的第一媒体信号。 提供的视频信号是通过以采样率较低的格式记录的视频信号进行上采样而创建的。 该方法还包括获得指示第一媒体信号内的错误的第二信号。 第二信号是第二格式，例如具有记录视频信号的较低采样范围的格式。 处理信号以第一信号的格式放置第二信号。 然后，将估计的误差信号与原始信号组合以得到纠错输出。

    MODIFYING GRADATION IN AN IMAGE FRAME INCLUDING APPLYING A WEIGHTING TO A PREVIOUSLY PROCESSED PORTION OF THE IMAGE FRAME
    38.
    发明申请
    MODIFYING GRADATION IN AN IMAGE FRAME INCLUDING APPLYING A WEIGHTING TO A PREVIOUSLY PROCESSED PORTION OF THE IMAGE FRAME 有权
    修改图像帧中的灰度，包括对以前加工的图像帧进行称重

    公开(公告)号：US20160117794A1

    公开(公告)日：2016-04-28

    申请号：US14526220

    申请日：2014-10-28

    Applicant: ATI Technologies ULC

    Inventor： Boris Ivanovic ,  Tiberiu Visan

    IPC: G06T1/20 ,  G06T11/00

    CPC classification number: G06T11/001 ,  G06T5/002 ,  G06T5/009 ,  G06T2200/28 ,  G06T2207/10016

    Abstract: An apparatus and methods for modifying gradation in an image frame determine a blend factor indicating a first weighting associated with a previously processed portion of the image frame. The apparatus and methods generate a weighted value associated with a current region of the image frame based on the current region of the image frame and based on applying the first weighting to the previously processed portion of the image frame so as to modify the gradation in the image frame.

    Abstract translation: 用于修改图像帧中的灰度的装置和方法确定指示与图像帧的先前处理的部分相关联的第一加权的混合因子。 所述装置和方法基于图像帧的当前区域生成与图像帧的当前区域相关联的加权值，并且基于将第一加权应用于图像帧的先前处理的部分，以便修改图像帧中的灰度 图像帧。

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