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    CONTENT ADAPTIVE DEBLOCKING DURING VIDEO ENCODING AND DECODING
    53.
    发明申请
    CONTENT ADAPTIVE DEBLOCKING DURING VIDEO ENCODING AND DECODING 审中-公开

    公开(公告)号：US20190261014A1

    公开(公告)日：2019-08-22

    申请号：US16404534

    申请日：2019-05-06

    申请人： Microsoft Technology Licensing, LLC

    发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

    IPC分类号： H04N19/51 ,  H04N19/86 ,  H04N19/14 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117

    摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

    VIDEO CODING
    55.
    发明申请
    VIDEO CODING 审中-公开

    公开(公告)号：US20190215513A1

    公开(公告)日：2019-07-11

    申请号：US16353914

    申请日：2019-03-14

    申请人： Microsoft Technology Licensing, LLC

    发明人： Alexandros Tourapis ,  Feng Wu ,  Shipeng Li

    IPC分类号： H04N19/109 ,  H04N19/573 ,  H04N19/513 ,  H04N19/147 ,  H04N19/577 ,  H04N19/52 ,  H04N19/56 ,  H04N19/176

    摘要： Improved video coding is described to encode video data within a sequence of video frames. To this end, at least a portion of a reference frame is encoded to include motion information associated with the portion of the reference frame. At least a portion of a predictable frame that includes video data predictively correlated to said portion of said reference frame is defined based on the motion information. At least said portion of the predictable frame is encoded without including corresponding motion information and including mode identifying data. The mode identifying data indicate that the encoded portion of the predictable frame can be directly derived using at least the motion information associated with the portion of the reference frame.

    Hybrid Digital-Analog Coding
    56.
    发明申请
    Hybrid Digital-Analog Coding 审中-公开

    公开(公告)号：US20190141316A1

    公开(公告)日：2019-05-09

    申请号：US16311129

    申请日：2017-07-20

    申请人： Microsoft Technology Licensing, LLC

    发明人： Cuiling Lan ,  Chong Luo ,  Feng Wu ,  Wenjun Zeng

    IPC分类号： H04N19/103 ,  H04N19/124 ,  H04N19/154 ,  H04N19/192 ,  H04N19/18

    摘要： In accordance with implementations of the subject matter described herein, a hybrid digital-analog coding scheme is proposed. In general, in accordance with implementations of the subject matter described herein, digital or analog encoding is selected at a level of chunks of a frame rather than at a level of the whole frame. Further, the encoding of a chunk is based on an expected distortion to be caused by analog transmission of the chunk over a communication channel, the distortion being estimated based on a constraint on available transmission resources over the transmission channel.

    ENCODER-SIDE DECISIONS FOR SAMPLE ADAPTIVE OFFSET FILTERING
    60.
    发明申请
    ENCODER-SIDE DECISIONS FOR SAMPLE ADAPTIVE OFFSET FILTERING 审中-公开
    用于样本自适应偏移滤波的编码器方面的决策

    公开(公告)号：US20170054976A1

    公开(公告)日：2017-02-23

    申请号：US15307746

    申请日：2014-04-29

    申请人： MICROSOFT TECHNOLOGY LICENSING, LLC

    发明人： Bin Li ,  You Zhou ,  Jizheng Xu ,  Chih-Lung Lin ,  Feng Wu

    IPC分类号： H04N19/117 ,  H04N19/169 ,  H04N19/70 ,  H04N19/132 ,  H04N19/86 ,  H04N19/14

    CPC分类号： H04N19/117 ,  H04N19/132 ,  H04N19/14 ,  H04N19/157 ,  H04N19/172 ,  H04N19/1883 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

    摘要： Disclosed herein are exemplary embodiments of innovations in the area of encoding pictures or portions of pictures (e.g., slices, coding tree units, or coding units) and determining whether and how certain filtering operation should be performed and flagged for performance by the decoder in the bitstream. In particular examples, various implementations for setting the sample adaptive offset (SAO) syntax elements in the H.265/HEVC standard are disclosed. Although these examples concern the H.265/HEVC standard and its SAO filter, the disclosed technology is more widely applicable to other video codecs that involve filtering operations (particularly multi-stage filtering operations) as part of their encoding and decoding processes.

    摘要翻译： 这里公开了对图像或图像的一部分（例如，切片，编码树单元或编码单元）进行编码的领域的创新的示例性实施例，并且确定是否以及如何执行某些滤波操作并且如何被标记以供解码器在 比特流。 在具体示例中，公开了用于设置H.265 / HEVC标准中的样本自适应偏移（SAO）语法元素的各种实施方式。 尽管这些示例涉及H.265 / HEVC标准及其SAO滤波器，但是所公开的技术更广泛地适用于涉及其编码和解码过程的一部分的滤波操作（特别是多级滤波操作）的其它视频编解码器。