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213 条记录 (耗时 0.043 秒)

    BLOCK FLIPPING AND SKIP MODE IN INTRA BLOCK COPY PREDICTION
    42.
    发明申请
    BLOCK FLIPPING AND SKIP MODE IN INTRA BLOCK COPY PREDICTION 审中-公开
    内嵌块复制预测中的块移动和跳跃模式

    公开(公告)号：US20170070748A1

    公开(公告)日：2017-03-09

    申请号：US15029469

    申请日：2014-03-04

    申请人： Bin LI ,  Jizheng XU ,  Feng WU ,  MICROSOFT TECHNOLOGY LICENSING, LLC

    发明人： Bin Li ,  Jizheng Xu ,  Feng Wu

    IPC分类号： H04N19/593 ,  H04N19/70 ,  H04N19/115 ,  H04N19/176

    CPC分类号： H04N19/593 ,  H04N19/115 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

    摘要： Innovations in the area of encoding or decoding of blocks using intra block copy (“BC”) prediction improve coding efficiency for intra-BC-predicted blocks in many situations. For example, some of the innovations relate to block flipping in which an intra-BC-predicted block is flipped relative to a reference region, which can be indicated by a block vector (“BV”) value. Other innovations relate to signaling of a skip mode in which a current intra-BC-predicted block uses a signaled BV differential but lacks residual data.

    摘要翻译： 使用块内复制（“BC”）预测的块编码或解码领域的创新在许多情况下提高了BC内预测块的编码效率。 例如，一些创新涉及块翻转，其中BC内预测块相对于参考区被翻转，其可以由块向量（“BV”）值指示。 其他创新涉及跳跃模式的信令，其中当前BC内预测块使用信号化的BV差分但缺少残留数据。

    DEPTH SENSING WITH DEPTH-ADAPTIVE ILLUMINATION
    44.
    发明申请
    DEPTH SENSING WITH DEPTH-ADAPTIVE ILLUMINATION 有权
    深度感应与深度自适应照明

    公开(公告)号：US20140002445A1

    公开(公告)日：2014-01-02

    申请号：US13539362

    申请日：2012-06-30

    申请人： Zhiwei Xiong ,  Feng Wu ,  Yueyi Zhang ,  Pengyu Cong

    发明人： Zhiwei Xiong ,  Feng Wu ,  Yueyi Zhang ,  Pengyu Cong

    IPC分类号： G06T15/00

    CPC分类号： G01B11/2513 ,  H04N13/271

    摘要： An adaptive depth sensing system (ADSS) illuminates a scene with a pattern that is constructed based on an analysis of at least one prior-generated depth map. In one implementation, the pattern is a composite pattern that includes two or more component patterns associated with different depth regions in the depth map. The composite pattern may also include different illumination intensities associated with the different depth regions. By using this composite pattern, the ADSS can illuminate different objects in a scene with different component patterns and different illumination intensities, where those objects are located at different depths in the scene. This process, in turn, can reduce the occurrence of defocus blur, underexposure, and overexposure in the image information.

    摘要翻译： 自适应深度感测系统（ADSS）利用基于至少一个先前生成的深度图的分析构建的图案来照亮场景。 在一个实现中，该图案是包括与深度图中的不同深度区域相关联的两个或多个分量图案的复合图案。 复合图案还可以包括与不同深度区域相关联的不同照明强度。 通过使用这种复合图案，ADSS可以照亮具有不同组件图案和不同照明强度的场景中的不同对象，其中这些对象位于场景中的不同深度。 这个过程又可以减少图像信息中散焦模糊，曝光不足和过度曝光的发生。

    Directional and motion-compensated discrete cosine transformation
    45.
    发明授权
    Directional and motion-compensated discrete cosine transformation 有权
    定向和运动补偿离散余弦变换

    公开(公告)号：US08542726B2

    公开(公告)日：2013-09-24

    申请号：US11550251

    申请日：2006-10-17

    申请人： Jizheng Xu ,  Feng Wu ,  Hao Xu

    发明人： Jizheng Xu ,  Feng Wu ,  Hao Xu

    IPC分类号： H04N11/02

    CPC分类号： G06F17/147 ,  H04N19/51

    摘要： Systems and methods provide directional discrete cosine transformation (DCT) and motion compensated DCT. In one implementation, an exemplary system finds a directional property of an image, such as a visual trend, factorizes a DCT operation into primal operations, and applies the primal operations along a corresponding direction to perform the DCT. Motion compensated DCT applies the primal operations along a motion trajectory of a video sequence. When the directional DCT is applied blockwise, the directional coding modes for adjacent blocks can be optimized in view of each other using a weighted graph to represent the related coding mode decisions.

    摘要翻译： 系统和方法提供定向离散余弦变换（DCT）和运动补偿DCT。 在一个实现中，示例性系统找到诸如视觉趋势的图像的方向属性将DCT运算分解为原始操作，并且沿着相应方向应用原始操作以执行DCT。 运动补偿DCT沿着视频序列的运动轨迹应用原始操作。 当方向DCT被逐行应用时，相邻块的定向编码模式可以使用加权图来相互比较来优化，以表示相关的编码模式决定。

    Adaptive updates in motion-compensated temporal filtering
    46.
    发明授权
    Adaptive updates in motion-compensated temporal filtering 有权
    运动补偿时间滤波中的自适应更新

    公开(公告)号：US08442108B2

    公开(公告)日：2013-05-14

    申请号：US11126997

    申请日：2005-05-10

    申请人： Li Song ,  Jizheng Xu ,  Feng Wu

    发明人： Li Song ,  Jizheng Xu ,  Feng Wu

    IPC分类号： H04B1/66 ,  H04N7/01

    CPC分类号： H04N19/615 ,  H04N19/124 ,  H04N19/13 ,  H04N19/577 ,  H04N19/61 ,  H04N19/63

    摘要： Techniques and tools are described for scalable video coding and decoding. For example, a video encoder and decoder perform adaptive update operations in lifting-based motion-compensated temporal filtering and inverse motion-compensated temporal filtering, respectively. The encoder, in a prediction stage, computes a motion-compensated prediction for an odd image and computes a high-pass image as the difference between the odd image and the prediction. For an update stage, the encoder performs motion compensation on the high-pass image (and potentially another high-pass image) to compute a motion-compensated update. Based upon perceptual criteria, the encoder adaptively combines the update with an even image to form a low-pass image. The decoder, for an update stage, performs motion compensation on one or more high-pass images to compute a motion-compensated update. Based upon perceptual criteria, the encoder adaptively combines the update with a low-pass image to reconstruct an even frame.

    摘要翻译： 描述了可扩展视频编码和解码的技术和工具。 例如，视频编码器和解码器分别在基于提升的运动补偿时间滤波和反运动补偿时间滤波中执行自适应更新操作。 编码器在预测级中计算奇数图像的运动补偿预测，并计算高通图像作为奇数图像与预测之间的差。 对于更新阶段，编码器对高通图像（和潜在的另一高通图像）执行运动补偿以计算运动补偿更新。 基于感知标准，编码器将更新与均匀图像自适应地组合以形成低通图像。 用于更新阶段的解码器对一个或多个高通图像执行运动补偿以计算运动补偿更新。 基于感知标准，编码器将更新与低通图像自适应地组合以重构偶数帧。

    Video coding
    47.
    发明授权
    Video coding 有权
    视频编码

    公开(公告)号：US08406300B2

    公开(公告)日：2013-03-26

    申请号：US12474821

    申请日：2009-05-29

    申请人： Alexandros Tourapis ,  Feng Wu ,  Shipeng Li

    发明人： Alexandros Tourapis ,  Feng Wu ,  Shipeng Li

    IPC分类号： H04N11/04

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

    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.

    摘要翻译： 描述了改进的视频编码以对视频帧序列内的视频数据进行编码。 为此，参考帧的至少一部分被编码以包括与参考帧的该部分相关联的运动信息。 基于运动信息来定义包括与所述参考帧的所述部分预测相关的视频数据的可预测帧的至少一部分。 可预测帧的至少所述部分被编码而不包括对应的运动信息并且包括模式识别数据。 模式识别数据指示可以使用至少与参考帧的部分相关联的运动信息直接导出可预测帧的编码部分。

    Wyner-Ziv and wavelet video coding
    50.
    发明授权
    Wyner-Ziv and wavelet video coding 有权
    Wyner-Ziv和小波视频编码

    公开(公告)号：US08340193B2

    公开(公告)日：2012-12-25

    申请号：US11462580

    申请日：2006-08-04

    申请人： Yan Lu ,  Xun Guo ,  Feng Wu ,  Shipeng Li

    发明人： Yan Lu ,  Xun Guo ,  Feng Wu ,  Shipeng Li

    IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  G06K9/36 ,  G06K9/46

    CPC分类号： H04N19/395 ,  H04N19/647

    摘要： Wyner-Ziv and wavelet video coding is described. In one aspect, Wyner-Ziv frames from multiple frames of source video content are zero-tree entropy encoded to generate encoded Wyner-Ziv content. The zero-tree entropy encoding operations are based on high-order statistical correlations among wavelet transforms from the Wyner-Ziv frames. The encoded Wyner-Ziv content is communicated to a decoder for decoding to generate reconstructed Wyner-Ziv frames for presentation to a user.

    摘要翻译： 描述了Wyner-Ziv和小波视频编码。 在一方面，来自多帧源视频内容的Wyner-Ziv帧是零树熵编码以生成编码的Wyner-Ziv内容。 零树熵编码操作基于来自Wyner-Ziv帧的小波变换之间的高阶统计相关性。 编码的Wyner-Ziv内容被传送到解码器以进行解码以产生重建的Wyner-Ziv帧以呈现给用户。