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    Method and Apparatus of Constrained Intra Block Copy for Coding Video
    3.
    发明申请
    Method and Apparatus of Constrained Intra Block Copy for Coding Video 有权
    用于编码视频的约束内部块复制的方法和装置

    公开(公告)号：US20160241875A1

    公开(公告)日：2016-08-18

    申请号：US14883883

    申请日：2015-10-15

    Applicant: MediaTek Inc.

    Inventor： Tung-Hsing WU ,  Han-Liang CHOU

    IPC: H04N19/593 ,  H04N19/423 ,  H04N19/176

    CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/423

    Abstract: A method of IntraBC (Intra-block copy) coding for a coding region is disclosed. Embodiments of the present invention derive an IntraBC (Intra picture block copy) predictor from a constrained previous reconstructed region so as to reduce storage requirement for the previous reconstructed data. In one embodiment, a maximum absolute vertical BV (block vector) value, MaxV_BV is determined, where MaxV_BV is smaller than a full vertical search range for the coding region. A constrained previous reconstructed region corresponding to previous reconstructed samples processed before the current block is then determined, where the constrained previous reconstructed region includes at least MaxV_MV reconstructed samples in vertical direction above the current block and excludes at least one row of reconstructed samples for the current block with a vertical distance larger than MaxV_MV. Each coding block may correspond to a prediction unit (PU) or a coding unit (CU).

    Abstract translation: 公开了一种用于编码区域的IntraBC（块内复制）编码方法。 本发明的实施例从约束的先前重构区域导出IntraBC（Intra图像块拷贝）预测器，以便减少对先前重构数据的存储要求。 在一个实施例中，确定最大绝对垂直BV（块向量）值MaxV_BV，其中MaxV_BV小于编码区域的完整垂直搜索范围。 然后确定对应于在当前块之前处理的先前重建样本的约束的先前重构区域，其中约束的先前重建区域在当前块上方包括在垂直方向上的至少MaxV_MV重建样本，并且排除当前的至少一行重构样本 块的垂直距离大于MaxV_MV。 每个编码块可以对应于预测单元（PU）或编码单元（CU）。

    Method and Apparatus for Image Compression without Residue Signaling
    5.
    发明申请
    Method and Apparatus for Image Compression without Residue Signaling 审中-公开

    公开(公告)号：US20170230687A1

    公开(公告)日：2017-08-10

    申请号：US15404313

    申请日：2017-01-12

    Applicant: MEDIATEK INC.

    Inventor： Li-Heng CHEN ,  Tung-Hsing WU ,  Han-Liang CHOU

    IPC: H04N19/593 ,  H04N19/174 ,  H04N19/182 ,  H04N19/91

    Abstract: A method and apparatus of image coding including a no-residue prediction mode are disclosed. At the encoder side, current predictors for a current coding unit are determined according to a target prediction process associated with a target prediction mode. The current predictors are determined based on pixel data including reconstructed pixels in the current slice or the current image. The target prediction process is applied to the current coding unit using the current predictors to generate prediction residues. A distortion condition or a cost measure for the prediction residues is determined. If the distortion condition is satisfied or the cost measure favors coding without the prediction residues, the current coding unit is encoded into current compressed bits of the current coding unit without compressed data associated with the prediction residues. A corresponding decoding method and apparatus are also disclosed.

    Method of Hard-Limited Packet Size for Video Encoding
    6.
    发明申请
    Method of Hard-Limited Packet Size for Video Encoding 审中-公开
    用于视频编码的硬限制包大小的方法

    公开(公告)号：US20170064310A1

    公开(公告)日：2017-03-02

    申请号：US15191308

    申请日：2016-06-23

    Applicant: MediaTek Inc.

    Inventor： Chao-Chih HUANG ,  Ting-An LIN ,  Shen-Kai CHANG ,  Han-Liang CHOU

    IPC: H04N19/159 ,  H04N19/174 ,  H04N19/172 ,  H04N19/13 ,  H04N19/184 ,  H04N19/15 ,  H04N19/43 ,  H04N19/61 ,  H04N19/124 ,  H04N19/176 ,  H04N19/82

    CPC classification number: H04N19/15 ,  H04N19/174 ,  H04N19/176 ,  H04N19/188

    Abstract: A method and system for encoding a group of coding blocks and packetizing the compressed data into slices/packets with hard-limited packet size are disclosed. According to the present invention, a packetization map for at least a portion of a current picture is determined. The packetization map associates coding blocks in at least a portion of the current picture with one or more packets by identifying a corresponding group of coding blocks for each packet of said one or more packets. The corresponding group of coding blocks for each packet is then encoded according to the packetization map and the size of each packet is determined. The packet size is checked. If any packet size exceeds a constrained size, a new packetization map is generated and the corresponding group of coding blocks for each packet is encoded according to the new packetization map.

    Abstract translation: 公开了一种用于对一组编码块进行编码并将压缩数据打包成具有硬限制包大小的片/包的方法和系统。 根据本发明，确定当前画面的至少一部分的分组化图。 分组化映射通过识别所述一个或多个分组的每个分组的对应的编码块组，将当前图片的至少一部分中的编码块与一个或多个分组相关联。 然后根据分组化映射对每个分组的相应组的编码块进行编码，并确定每个分组的大小。 检查包大小。 如果任何分组大小超过约束大小，则生成新的分组化映射，并且根据新的分组化映射对每个分组的相应组的编码块进行编码。

    VIDEO ENCODER AND VIDEO ENCODING METHOD WITH REAL-TIME QUALITY ESTIMATION
    7.
    发明公开
    VIDEO ENCODER AND VIDEO ENCODING METHOD WITH REAL-TIME QUALITY ESTIMATION 审中-公开

    公开(公告)号：US20240080452A1

    公开(公告)日：2024-03-07

    申请号：US18350897

    申请日：2023-07-12

    Applicant: MEDIATEK INC.

    Inventor： Tung-Hsing WU ,  Chih-Hao CHANG ,  Yi-Fan CHANG ,  Han-Liang CHOU

    IPC: H04N19/154 ,  H04N19/124 ,  H04N19/159 ,  H04N19/82

    CPC classification number: H04N19/154 ,  H04N19/124 ,  H04N19/159 ,  H04N19/82

    Abstract: A video encoder with quality estimation is shown. The video encoder has a video compressor, a video reconstructor, a quality estimator, and an encoder top controller. The video compressor receives the source data of a video to generate compressed data. The video reconstructor is coupled to the video compressor for generation of playback-level data that is buffered for inter prediction by the video compressor, wherein the video reconstructor generates intermediate data and, based on the intermediate data, the video reconstructor generates playback-level data. The quality estimator is coupled to the video reconstructor to receive the intermediate data. Quality estimation is performed based on the intermediate data rather than the playback-level data. Based on the quality estimation result, the encoder top controller adjusts at least one video compression factor in real time.

    METHOD AND APPARATUS OF ERROR HANDLING FOR VIDEO CODING USING INTRA BLOCK COPY MODE
    8.
    发明申请
    METHOD AND APPARATUS OF ERROR HANDLING FOR VIDEO CODING USING INTRA BLOCK COPY MODE 审中-公开

    公开(公告)号：US20190289320A1

    公开(公告)日：2019-09-19

    申请号：US16431062

    申请日：2019-06-04

    Applicant: MEDIATEK INC.

    Inventor： Tzu-Der CHUANG ,  Chia-Yun CHENG ,  Han-Liang CHOU ,  Ching-Yeh CHEN ,  Yu-Chen SUN ,  Yu-Wen HUANG

    IPC: H04N19/563 ,  H04N19/70 ,  H04N19/513 ,  H04N19/593

    Abstract: In order to overcome the issue caused by a decoded block vector (BV) pointing to a reference block overlapping with an unavailable area, various methods are disclosed. According to one method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by padding from neighbouring available pixels. The padding can be done in the horizontal direction and then the vertical direction. The padding may also done in the vertical direction first and then horizontal direction. In another method, if the reference block overlaps with an unavailable area, the reference pixels in the unavailable area are generated for IntraBC prediction of the current block by using previous decoded pixels in the unavailable area. A pre-defined value may also be used for the unavailable area.

    Method and Apparatus of Constrained Intra Block Copy for Coding Video
    9.
    发明申请
    Method and Apparatus of Constrained Intra Block Copy for Coding Video 审中-公开

    公开(公告)号：US20180213253A1

    公开(公告)日：2018-07-26

    申请号：US15926070

    申请日：2018-03-20

    Applicant: MEDIATEK INC.

    Inventor： Tung-Hsing WU ,  Han-Liang CHOU

    IPC: H04N19/593 ,  H04N19/423 ,  H04N19/176

    CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/423

    Abstract: A method and apparatus for IntraBC (Intra-block copy) coding for a coding region are disclosed. The method operates to receive input data associated with a current block in the coding region and determine a maximum memory size of a reconstructed sample memory for storing a constrained previous reconstructed region, wherein the constrained previous reconstructed region comprises a group of previous reconstructed samples processed before the current block. The method then derives an IntraBC predictor from a valid previous reconstructed region within the constrained previous reconstructed region stored in the reconstructed sample memory, and applies IntraBC encoding or decoding to the current block using the IntraBC predictor derived.

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