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1. 发明授权

US10123008B2 Method and apparatus for coding of intra prediction mode 有权
公开(公告)号：US10123008B2
公开(公告)日：2018-11-06
申请号：US14123093
申请日：2012-06-14
申请人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N7/32 , H04N7/26 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/593 , H04N19/463 , H04N19/186 , H04N19/136 , H04N19/169 , H04N19/44 , H04N19/91
摘要： Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes.

2. 发明申请

US20140086323A1 METHOD AND APPARATUS FOR CODING OF INTRA PREDICTION MODE 审中-公开
标题翻译：内部预测模式编码的方法和装置
公开(公告)号：US20140086323A1
公开(公告)日：2014-03-27
申请号：US14123093
申请日：2012-06-14
申请人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/11 , H04N19/136 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/1887 , H04N19/44 , H04N19/463 , H04N19/593 , H04N19/70 , H04N19/91
摘要： Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for spectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes.
摘要翻译：根据本发明的实施例将帧内预测模式候选配置为包括至少第一级MPM集合和第二级MPM集合的多级MPM集合。当前帧内预测模式的编码或解码是基于多级MPM集合，其中分别生成或解码的语法信息的一个语法元素与使用第一级MPM集合评估当前帧内预测模式相关联。用于分光学的方法和装置与使用第一级MPM集合评估当前帧内预测模式相关联。还公开了一种用于色度帧内预测模式编码和解码的方法和装置。色度帧内预测模式集包括基于亮度的色度预测模式（LM），直接模式（DM）和其它四种模式。码字组包括可变长度码字和固定长度码字，并且固定长度码字比可变长度码字长。可变长度码字用于DM和LM，固定长度码字用于其他四种模式。

3. 发明授权

US09788019B2 Method and apparatus of transform unit partition with reduced complexity 有权
公开(公告)号：US09788019B2
公开(公告)日：2017-10-10
申请号：US13156552
申请日：2011-06-09
申请人： Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N11/02 , H04N19/96 , H04N19/176 , H04N19/70 , H04N19/119
CPC分类号： H04N19/96 , H04N19/119 , H04N19/176 , H04N19/70
摘要： Transform unit (TU) partition method and apparatus depending on the coding unit (CU) partition and prediction unit (PU) partition are disclosed. In one embodiment, the maximum TU size is restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the maximum TU size is equal to the maximum of PU width and height, and the minimum TU size is equal to the minimum of PU width and height except for a 2N×2N CU with 2N×2N partition type.

4. 发明申请

US20120230411A1 Method and Apparatus of Transform Unit Partition with Reduced Complexity 有权
标题翻译：具有复杂度降低的变换单元分区的方法和装置
公开(公告)号：US20120230411A1
公开(公告)日：2012-09-13
申请号：US13156552
申请日：2011-06-09
申请人： Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N7/26
CPC分类号： H04N19/96 , H04N19/119 , H04N19/176 , H04N19/70
摘要： Three block concepts are introduced in HEVC: coding unit (CU), prediction unit (PU), and transform unit (TU). The overall coding structure is characterized by the various sizes of CU, PU and TU in a recursive fashion. For transform processing in current HEVC, a hierarchy RQT (Residual Quad Tree) is used and the TU size is related to the CU size, but independent of the PU size. This results in high encoding complexity and also causes increased processing time to process the syntax of residual quad tree. Accordingly a modified transform unit partition with reduced complexity is disclosed. According to an embodiment, the TU size may be restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the TU size is selected between 2N×2N and N×N for the 2N×2N, 2N×N, N×2N and N×N partition types. The syntax element, split_transform_flag, is used to indicate the selection of 2N×2N or N×N TU size when needed. Furthermore, a method with reduced complexity of selecting the best merge candidate for the 2N×2N CU merge mode is disclosed. The method relies on R-D cost associated with the motion vector of merge candidate to reduce required computation.
摘要翻译：在HEVC中引入了三个块概念：编码单元（CU），预测单元（PU）和变换单元（TU）。总体编码结构的特征在于以递归方式各种尺寸的CU，PU和TU。对于当前HEVC中的变换处理，使用层次RQT（残余四叉树），并且TU大小与CU大小相关，但与PU大小无关。这导致高编码复杂度，并且还导致处理剩余四叉树语法的处理时间增加。因此，公开了具有降低的复杂性的修改的变换单元分区。根据实施例，除了具有2N×2N分区类型的2N×2N编码单元之外，TU大小可以被限制为PU宽度和高度的最小值。在另一个实施例中，除了具有2N×2N分区类型的2N×2N编码单元之外，最大TU大小等于PU宽度和高度的最大值，并且最小TU大小等于PU宽度和高度的最小值。在另一个实施例中，对于2N×2N，2N×N，N×2N和N×N个分区类型，在2N×2N和N×N之间选择TU大小。语法元素split_transform_flag用于在需要时指示2N×2N或N×N TU大小的选择。此外，公开了一种选择2N×2N CU合并模式的最佳合并候选的复杂度降低的方法。该方法依赖于与合并候选的运动矢量相关联的R-D成本来减少所需的计算。

5. 外观设计

USD977695S1 Outdoor light 有权
公开(公告)号：USD977695S1
公开(公告)日：2023-02-07
申请号：US29820206
申请日：2021-12-20
申请人： Zhi Zhou
设计人： Zhi Zhou

6. 发明授权

US08880571B2 High dynamic range data format conversions for digital media 有权
标题翻译：数字媒体的高动态范围数据格式转换
公开(公告)号：US08880571B2
公开(公告)日：2014-11-04
申请号：US11418627
申请日：2006-05-05
申请人： Sridhar Srinivasan , Zhi Zhou
发明人： Sridhar Srinivasan , Zhi Zhou
IPC分类号： G06F7/00 , G06F15/00 , H04N1/60 , H03M7/24 , H04N1/407
CPC分类号： H03M7/24 , H04N1/407 , H04N1/6027
摘要： One or more continuous mappings are defined at a digital media encoder to convert input digital media data in a first high dynamic range format to a second format with a smaller dynamic range than the first format. The encoder converts the input digital media data to the second format with the smaller dynamic range using the continuous mapping and one or more conversion parameters relating to the continuous mapping. The encoder encodes the converted digital media data in a bitstream along with the conversion parameter(s). The conversion parameter(s) enable a digital media decoder to convert the converted digital media data back to the first high dynamic range format from the second format with the smaller dynamic range. Techniques for converting different input formats with different dynamic ranges are described.
摘要翻译：在数字媒体编码器处定义一个或多个连续映射，以将第一高动态范围格式的输入数字媒体数据转换成具有比第一格式更小的动态范围的第二格式。编码器使用连续映射和与连续映射相关的一个或多个转换参数将输入数字媒体数据转换为具有较小动态范围的第二格式。编码器将转换的数字媒体数据与转换参数一起编码在比特流中。转换参数使得数字媒体解码器能够将转换的数字媒体数据从具有较小动态范围的第二格式转换回第一高动态范围格式。描述用于转换具有不同动态范围的不同输入格式的技术。

7. 发明授权

US08644565B2 System and method for non-cooperative iris image acquisition 有权
标题翻译：非合作虹膜图像采集系统和方法
公开(公告)号：US08644565B2
公开(公告)日：2014-02-04
申请号：US13055250
申请日：2009-07-22
申请人： Eliza Yingzi Du , Zhi Zhou , Emrah Arslanturk
发明人： Eliza Yingzi Du , Zhi Zhou , Emrah Arslanturk
IPC分类号： G06K9/00
CPC分类号： G06K9/00604
摘要： A method segments iris images from eye image data captured from non-cooperative subjects. The method includes receiving a frame of eye image data, and determining whether a pupil exists in the image by detecting glare areas in the image. Upon finding a pupil, subsequent images are processed with reference to the pupil location and a radius is calculated for the pupil. A k means clustering method and principal component analysis are used to locate pupil boundary points, which are fitted to a conic. Using the pupil boundary, an angular derivative is computed for each frame having a pupil and iris boundary points are fitted to a conic to identify an iris region between the iris boundary and the pupil boundary. Noise data are then removed from the iris region to generate an iris segment. A method for evaluating iris frame quality and iris image segmentation quality is also disclosed.
摘要翻译：一种方法从非合作对象捕获的眼图数据中分割虹膜图像。该方法包括接收一帧眼图数据，并通过检测图像中的眩光区域来确定图像中是否存在瞳孔。在找到瞳孔时，参考瞳孔位置处理随后的图像，并计算瞳孔的半径。 A k表示聚类方法，主成分分析用于定位适合于锥体的瞳孔边界点。使用瞳孔边界，对于具有瞳孔的每个帧计算角度导数，并且将虹膜边界点拟合到圆锥，以识别虹膜边界和瞳孔边界之间的虹膜区域。然后从虹膜区域移除噪声数据，以产生虹膜段。还公开了一种用于评估虹膜框架质量和虹膜图像分割质量的方法。

8. 发明授权

US08432392B2 Display system with image conversion mechanism and method of operation thereof 有权
标题翻译：具有图像转换机构的显示系统及其操作方法
公开(公告)号：US08432392B2
公开(公告)日：2013-04-30
申请号：US13160409
申请日：2011-06-14
申请人： Yoon Kyung Kim , Zhi Zhou , Yeong-Taeg Kim
发明人： Yoon Kyung Kim , Zhi Zhou , Yeong-Taeg Kim
IPC分类号： G06T15/00
CPC分类号： H04N13/261 , G06T7/50 , H04N13/271
摘要： A method of operation of a display system includes: receiving a current input image with current input pixels; identifying an input object, having input object pixels, based on differences in characteristics of the current input pixels; calculating an object pixel depth for the input object pixels from an image depth map of the current input image based on a weighted average of depth candidates; and generating a processed image, having a perceived depth, from the current input image with the image depth map and the object pixel depth for displaying on a device.
摘要翻译：显示系统的操作方法包括：利用当前输入像素接收当前输入图像; 基于当前输入像素的特性的不同，识别具有输入对象像素的输入对象; 基于深度候选的加权平均，从当前输入图像的图像深度图计算输入对象像素的对象像素深度; 并且从具有图像深度图的当前输入图像和用于在设备上显示的对象像素深度生成具有感知深度的处理图像。

9. 发明申请

US20130010873A1 SYSTEM AND METHOD OF ADAPTIVE VERTICAL SEARCH RANGE TRACKING FOR MOTION ESTIMATION IN DIGITAL VIDEO 失效
标题翻译：用于数字视频中运动估计的自适应垂直搜索范围跟踪的系统和方法
公开(公告)号：US20130010873A1
公开(公告)日：2013-01-10
申请号：US13619288
申请日：2012-09-14
申请人： Surapong Lertrattanapanich , Yeong-Taeg Kim , Zhi Zhou
发明人： Surapong Lertrattanapanich , Yeong-Taeg Kim , Zhi Zhou
IPC分类号： H04N7/32
CPC分类号： G06T7/238 , G06T2207/10016 , G06T2207/20021
摘要： A system and method which determines an adaptive vertical search range used to provide motion estimation in digital video content are disclosed. In some embodiments, a fixed-size vertical search range for the motion estimation is defined and utilized. A reference frame and target frame are stored in memory, and a block in the reference frame is selected for consideration. An offset value is determined which is indicative of a directional shift of the fixed-size vertical search range and the vertical search range is shifted based on the offset value. A motion vector is then estimated using the shifted vertical search range.
摘要翻译：公开了一种确定用于在数字视频内容中提供运动估计的自适应垂直搜索范围的系统和方法。在一些实施例中，定义和利用用于运动估计的固定尺寸垂直搜索范围。将参考帧和目标帧存储在存储器中，并且选择参考帧中的块以供考虑。确定指示固定尺寸垂直搜索范围的方向偏移的偏移值，并且基于偏移值移动垂直搜索范围。然后使用偏移的垂直搜索范围来估计运动矢量。

10. 发明授权

US08295346B2 Small detail reservation in content-adaptive quantization 有权
标题翻译：内容自适应量化中的小细节预留
公开(公告)号：US08295346B2
公开(公告)日：2012-10-23
申请号：US12420763
申请日：2009-04-08
申请人： Zhi Zhou , Yeongtaeg Kim
发明人： Zhi Zhou , Yeongtaeg Kim
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , G06K9/36 , G06K9/00 , H03M7/00
CPC分类号： H04N19/186 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/61
摘要： Video processing systems and methods for preservation of small details in video undergoing quantization is discussed. Small details are preserved by identifying an area of interest within a video frame, determining whether small details are present within the selected portion of the video frame, and further determining whether those small details may be lost during quantization. In the event that small details are present in the selected portion of the video frame and may be lost during quantization, a color-shifting operation may be performed on one or more color components of the selected portion of the video frame, such as luminance, prior to quantization to preserve the small detail. During the color-shifting operation, the values of at least one color component of pixels representing the video frame are shifted such that the pixels extend between at least two quantization levels when quantized. In this manner, small detail is preserved, while also allowing for a reduction in the total bits of information contained in the video frame.
摘要翻译：讨论了视频处理系统和用于保存正在进行量化的视频中的小细节的方法。通过识别视频帧内的感兴趣区域来确定小细节，确定视频帧的所选部分内是否存在小细节，并且进一步确定在量化期间这些小细节是否可能丢失。在视频帧的所选部分中存在小细节并且可能在量化期间丢失的情况下，可以对视频帧的所选部分的一个或多个颜色分量执行色彩转换操作，诸如亮度，在量化之前保存小细节。在色彩变换操作期间，表示视频帧的像素的至少一个颜色分量的值被移位，使得像素在量化时在至少两个量化级之间延伸。以这种方式，保留了细节，同时还允许减少包含在视频帧中的信息的总比特。

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