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    Method of Hard-Limited Packet Size for Video Encoding
    3.
    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。

    Method and Apparatus of Face Independent Coding Structure for VR Video
    4.
    发明申请
    Method and Apparatus of Face Independent Coding Structure for VR Video 审中-公开

    公开(公告)号：US20170374364A1

    公开(公告)日：2017-12-28

    申请号：US15628826

    申请日：2017-06-21

    Applicant: MEDIATEK INC.

    Inventor： Jian-Liang LIN ,  Chao-Chih HUANG ,  Hung-Chih LIN ,  Chia-Ying LI ,  Shen-Kai CHANG

    IPC: H04N19/119 ,  H04N19/51 ,  H04N19/61 ,  H04N19/85

    CPC classification number: H04N19/119 ,  H04N19/103 ,  H04N19/114 ,  H04N19/51 ,  H04N19/597 ,  H04N19/61 ,  H04N19/85

    Abstract: A method and apparatus of video encoding or decoding for a video encoding or decoding system applied to multi-face sequences corresponding to a 360-degree virtual reality sequence are disclosed. According to embodiments of the present invention, at least one face sequence of the multi-face sequences is encoded or decoded using face-independent coding, where the face-independent coding encodes or decodes a target face sequence using prediction reference data derived from previous coded data of the target face sequence only. Furthermore, one or more syntax elements can be signaled in a video bitstream at an encoder side or parsed from the video bitstream at a decoder side, where the syntax elements indicate first information associated with a total number of faces in the multi-face sequences, second information associated with a face index for each face-independent coded face sequence, or both the first information and the second information.

    METHOD AND APPARATUS USING SOFTWARE ENGINE AND HARDWARE ENGINE COLLABORATED WITH EACH OTHER TO ACHIEVE HYBRID VIDEO ENCODING
    5.
    发明申请
    METHOD AND APPARATUS USING SOFTWARE ENGINE AND HARDWARE ENGINE COLLABORATED WITH EACH OTHER TO ACHIEVE HYBRID VIDEO ENCODING 审中-公开
    使用软件引擎和硬件引擎的方法和设备与每个其他开发人员进行混合视频编码

    公开(公告)号：US20170006294A1

    公开(公告)日：2017-01-05

    申请号：US15265896

    申请日：2016-09-15

    Applicant: MediaTek Inc.

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

    IPC: H04N19/159 ,  H04N19/124 ,  H04N19/15 ,  H04N19/139 ,  H04N19/51 ,  H04N19/42 ,  H04N19/13 ,  H04N19/61 ,  H04N19/105

    CPC classification number: H04N19/439 ,  H04N19/42 ,  H04N19/423 ,  H04N19/43 ,  H04N19/433

    Abstract: A hybrid video encoding method and system using a software engine and a hardware engine. The software engine receives coding unit data associated with a current picture, and performs a first part of the video encoding operation by executing instructions. The first part of the video encoding operation generates an inter predictor and control information corresponding to the coding unit data of the current picture. The first part of the video encoding operation stores the inter predictor into an off-chip memory. The hardware engine performs a second part of the video encoding operation according to the control information. The second part of the video encoding operation receives the inter predictor, and subtracts the inter predictor from the coding unit data to generate a residual signal. The second part of the video encoding operation then transforms and quantizes the residual signal to generate transformed and quantized residual signal, and encodes the transformed and quantized residual signal to generate an encoded video bitstream.

    Abstract translation: 一种使用软件引擎和硬件引擎的混合视频编码方法和系统。 软件引擎接收与当前图像相关联的编码单元数据，并且通过执行指令来执行视频编码操作的第一部分。 视频编码操作的第一部分产生与当前图像的编码单元数据相对应的帧间预测器和控制信息。 视频编码操作的第一部分将帧间预测器存储在片外存储器中。 硬件引擎根据控制信息执行视频编码操作的第二部分。 视频编码操作的第二部分接收帧间预测器，并从编码单元数据中减去帧间预测器，以生成残留信号。 视频编码操作的第二部分然后对剩余信号进行变换和量化以产生经变换和量化的残差信号，并且对经变换和量化的残差信号进行编码以产生经编码的视频比特流。

    Method and Apparatus of Inter Coding for VR Video Using Virtual Reference Frames
    7.
    发明申请
    Method and Apparatus of Inter Coding for VR Video Using Virtual Reference Frames 审中-公开

    公开(公告)号：US20170374385A1

    公开(公告)日：2017-12-28

    申请号：US15629855

    申请日：2017-06-22

    Applicant: MEDIATEK INC.

    Inventor： Chao-Chih HUANG ,  Hung-Chih LIN ,  Jian-Liang LIN ,  Chia-Ying LI ,  Shen-Kai CHANG

    IPC: H04N19/597 ,  H04N19/176 ,  H04N19/105

    CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/167 ,  H04N19/176

    Abstract: A method and apparatus of video encoding or decoding for a video encoding or decoding system applied to multi-face sequences corresponding to a 360-degree virtual reality sequence are disclosed. According the present invention, one or more multi-face sequences representing the 360-degree virtual reality sequence are derived. If Inter prediction is selected for a current block in a current face, one virtual reference frame is derived for each face of said one or more multi-face sequences by assigning one target reference face to a center of said one virtual reference frame and connecting neighboring faces of said one target reference face to said one target reference face at boundaries of said one target reference face. Then, the current block in the current face is encoded or decoded using a current virtual reference frame derived for the current face to derive an Inter predictor for the current block.

    Method and Apparatus for Entropy Transcoding
    8.
    发明申请
    Method and Apparatus for Entropy Transcoding 审中-公开
    用于熵转码的方法和装置

    公开(公告)号：US20160360236A1

    公开(公告)日：2016-12-08

    申请号：US15075022

    申请日：2016-03-18

    Applicant: MediaTek Inc.

    Inventor： Chao-Chih HUANG ,  Shen-Kai CHANG ,  Hung-Chih LIN

    IPC: H04N19/91 ,  H04L29/06 ,  H04N19/60 ,  H04N19/13 ,  H04N19/51 ,  H04N19/124

    CPC classification number: H04N19/91 ,  H04L65/607 ,  H04N19/13 ,  H04N19/146 ,  H04N19/1887 ,  H04N19/197 ,  H04N19/40 ,  H04N19/70

    Abstract: A method and apparatus for transcoding a compressed bitstream are disclosed. The system receives a first compressed bitstream generated by applying first entropy encoding to a set of tokens. The first compressed bitstream is decoded into the set of tokens using first entropy decoding corresponding to the first entropy encoding. The set of tokens is then re-encoded into a second compressed bitstream using second entropy encoding, where the second entropy encoding and the first entropy encoding use different statistics, different initial states, or both. The system may further comprising determining one or more modified or optimal probability models associated with the set of tokens, where the second entropy encoding is based on the modified or optimal probability models.

    Abstract translation: 公开了一种用于对压缩比特流进行代码转换的方法和装置。 系统接收通过将第一熵编码应用于一组令牌而产生的第一压缩比特流。 使用与第一熵编码对应的第一熵解码，将第一压缩比特流解码为令牌集合。 然后使用第二熵编码将该组令牌重新编码为第二压缩比特流，其中第二熵编码和第一熵编码使用不同的统计，不同的初始状态或两者。 该系统可以进一步包括确定与该组令牌相关联的一个或多个修改或最优概率模型，其中第二熵编码基于修改或最优概率模型。

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