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81. 发明申请

US20070140334A1 Method and apparatus for dynamically adjusting quantization offset values 有权
标题翻译：用于动态调整量化偏移值的方法和装置
公开(公告)号：US20070140334A1
公开(公告)日：2007-06-21
申请号：US11313553
申请日：2005-12-20
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/126
摘要： An encoding scheme dynamically adjusts a quantization rounding offset parameter used for encoding pictures according to statistics of previously encoded pictures of similar type. A look-up table can be used to store different relative quantization rounding offset parameters associated with different numbers of bits required to encode the pictures. The dynamically adjusted quantization rounding offset scheme achieves better coding performance at high bit rates. In one example, the dynamic quantization offset values are applied to a Uniform-Reconstruction-Quantizer (URQ) used for Laplacian sources.
摘要翻译：编码方案根据先前编码的类似图像的图像的统计，动态地调整用于编码图像的量化舍入偏移参数。可以使用查找表来存储与编码图片所需的不同比特数相关联的不同相对量化舍入偏移参数。动态调整的量化舍入偏移方案在高比特率下实现更好的编码性能。在一个示例中，动态量化偏移值被应用于用于拉普拉斯源的均匀重建量化器（URQ）。

82. 发明授权

US07227896B2 Method and apparatus for global motion estimation 有权
标题翻译：全球运动估计的方法和装置
公开(公告)号：US07227896B2
公开(公告)日：2007-06-05
申请号：US10094043
申请日：2002-03-08
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： H04N7/12 , G06K9/36
CPC分类号： H04N19/527 , H04N5/145 , H04N19/61
摘要： Different combinations of global motion parameters are estimated for a current frame interpolated to derive local motion vectors for individual image blocks. Image blocks in a reference frame identified by the local motion vectors are compared to the image blocks in the current frame. The estimated global motion parameters that provide the best match between the image blocks in the current frame and the reference frame are selected for encoding the current frame. Selected sub regions of temporally consecutive image frame s can be used in order to release the computational burden for global motion estimation and provide more robust global motion estimation results. A data truncation method can also be used to remove bias caused by foreground moving objects.
摘要翻译：针对内插的当前帧估计全局运动参数的不同组合，以导出各个图像块的局部运动矢量。将由局部运动矢量标识的参考帧中的图像块与当前帧中的图像块进行比较。选择在当前帧中的图像块与参考帧之间提供最佳匹配的估计全局运动参数用于对当前帧进行编码。可以使用时间上连续的图像帧的选择的子区域，以便释放全局运动估计的计算负担并且提供更加鲁棒的全局运动估计结果。数据截断方法也可以用来消除由前景移动对象引起的偏差。

83. 发明申请

US20070098278A1 Adaptive filtering based upon boundary strength 有权
公开(公告)号：US20070098278A1
公开(公告)日：2007-05-03
申请号：US11641707
申请日：2006-12-20
申请人： Shijun Sun , Shawmin Lei , Hiroyuki Katata
发明人： Shijun Sun , Shawmin Lei , Hiroyuki Katata
IPC分类号： G06K9/36 , G06K9/40
CPC分类号： H04N19/117 , H04N19/105 , H04N19/124 , H04N19/136 , H04N19/137 , H04N19/139 , H04N19/14 , H04N19/15 , H04N19/159 , H04N19/167 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/43 , H04N19/46 , H04N19/51 , H04N19/527 , H04N19/573 , H04N19/58 , H04N19/60 , H04N19/61 , H04N19/615 , H04N19/82 , H04N19/85 , H04N19/86
摘要： Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions.

84. 发明申请

US20070031065A1 Methods and Systems for Upsampling Filter Design 有权
标题翻译：过滤器设计的采样方法和系统
公开(公告)号：US20070031065A1
公开(公告)日：2007-02-08
申请号：US11530853
申请日：2006-09-11
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： G06K9/32
CPC分类号： H04N19/59 , H04N19/117 , H04N19/136 , H04N19/186 , H04N19/33 , H04N19/61
摘要： Embodiments of the present invention comprise methods and systems for upsampling filter design and applications.
摘要翻译：本发明的实施例包括用于上采样滤波器设计和应用的方法和系统。

85. 发明申请

US20060268988A1 Adaptive filtering based upon boundary strength 有权
公开(公告)号：US20060268988A1
公开(公告)日：2006-11-30
申请号：US11497431
申请日：2006-08-02
申请人： Shijun Sun , Shawmin Lei , Hiroyuki Katata
发明人： Shijun Sun , Shawmin Lei , Hiroyuki Katata
IPC分类号： H04N11/02 , H04N7/12 , H04N11/04 , H04B1/66
CPC分类号： H04N19/117 , H04N19/105 , H04N19/124 , H04N19/136 , H04N19/137 , H04N19/139 , H04N19/14 , H04N19/15 , H04N19/159 , H04N19/167 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/43 , H04N19/46 , H04N19/51 , H04N19/527 , H04N19/573 , H04N19/58 , H04N19/60 , H04N19/61 , H04N19/615 , H04N19/82 , H04N19/85 , H04N19/86
摘要： Adjacent regions are identified in an image. Coding parameters for the adjacent regions are identified. Selective filtering is performed at the region between the identified adjacent regions.

86. 发明授权

US06990506B2 Integer cosine transform matrix for picture coding 有权
公开(公告)号：US06990506B2
公开(公告)日：2006-01-24
申请号：US10017722
申请日：2001-12-13
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： G06F17/14
CPC分类号： G06F17/147 , G06T9/007
摘要： An integer transform matrix is used for implementing a Discrete Cosine Transform (DCT). Optimized values for the integer transform matrix are derived that satisfy certain normalization constraints and that also minimize the frequency distortion in the transform matrix.

87. 发明申请

US20060013490A1 3D video coding using sup-sequences 失效
标题翻译：使用sup-sequences的3D视频编码
公开(公告)号：US20060013490A1
公开(公告)日：2006-01-19
申请号：US10938153
申请日：2004-09-10
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： G06K9/36
CPC分类号： H04N19/30 , H04N19/597 , H04N19/70
摘要： A stereo-view image sequence is coded in an H.264-based sub-sequence coding by coding a first view of the stereo-view image sequence into a base layer of a sub-sequence coding. The second view of the stereo-view image sequence is coded into an enhancement layer of the sub-sequence coding. Accordingly, the sub-sequence coding can be decoded by a baseline-profile-compliant H.264 decoder. In one exemplary embodiment of the decoder, the decoder decodes both the base layer and the enhanced layer of the sub-sequence coding. In another exemplary embodiment, the decoder decodes one of the base layer and the enhanced layer of the sub-sequence coding. Additionally, a Supplemental Enhancement Information (SEI) payload could be used for each frame to signal the relationship between the current view and the secondary view.
摘要翻译：立体视图图像序列通过将立体视点图像序列的第一视图编码为子序列编码的基本层，以基于H.264的子序列编码进行编码。立体视图图像序列的第二视图被编码成子序列编码的增强层。因此，子序列编码可以由基准配置文件兼容的H.264解码器解码。在解码器的一个示例性实施例中，解码器对基本层和子序列编码的增强层进行解码。在另一示例性实施例中，解码器解码子序列编码的基本层和增强层中的一个。另外，每帧可以使用补充增强信息（SEI）有效载荷来表示当前视图和辅助视图之间的关系。

88. 发明申请

US20050259730A1 Video coding with residual color conversion using reversible YCoCg 审中-公开
标题翻译：使用可逆YCoCg的残留色彩转换的视频编码
公开(公告)号：US20050259730A1
公开(公告)日：2005-11-24
申请号：US10951929
申请日：2004-09-27
申请人： Shijun Sun
发明人： Shijun Sun
IPC分类号： H04N7/12 , H04N7/26 , H04N7/50 , H04N11/04
CPC分类号： H04N11/042 , H04N19/12 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/186 , H04N19/61
摘要： A video coding algorithm supports both lossy and lossless coding of video while maintaining high color fidelity and coding efficiency using an in-loop, reversible color transform. Accordingly, a method is provided to encode video data and decode the generated bitstream. The method includes generating a prediction-error signal by performing intra/inter-frame prediction on a plurality of video frames; generating a color-transformed, prediction-error signal by performing a reversible color-space transform on the prediction-error signal; and forming a bitstream based on the color-transformed prediction-error signal. The method may further include generating a color-space transformed error residual based on a bitstream; generating an error residual by performing a reversible color-space transform on the color-space transformed error residual; and generating a video frame based on the error residual.
摘要翻译：视频编码算法支持视频的有损和无损编码，同时使用循环可逆的颜色变换保持高色彩保真度和编码效率。因此，提供了一种对视频数据进行编码和解码生成的比特流的方法。该方法包括通过对多个视频帧执行帧内/帧间预测来产生预测误差信号; 通过对所述预测误差信号执行可逆的颜色空间变换来生成颜色变换的预测误差信号; 以及基于所述颜色变换预测误差信号形成比特流。该方法还可以包括：基于比特流生成颜色空间变换的误差残差; 通过对颜色空间变换的误差残差执行可逆的颜色空间变换来产生误差残差; 以及基于所述误差残差生成视频帧。

89. 发明授权

US06731799B1 Object segmentation with background extraction and moving boundary techniques 有权
标题翻译：对象分割与背景提取和移动边界技术
公开(公告)号：US06731799B1
公开(公告)日：2004-05-04
申请号：US09587210
申请日：2000-06-01
申请人： Shijun Sun , Yongmin Kim
发明人： Shijun Sun , Yongmin Kim
IPC分类号： G06K930
CPC分类号： G06K9/00369 , G06T7/12 , G06T7/149 , G06T7/174 , G06T7/246 , G06T2207/10016
摘要： Image data for an image frame are allocated among three groups. In one group are image data which are part of a derived motion boundary, along with image data which differ by at least a threshold amount from a corresponding point among normalized background data. In another group are image data which closely correspond to the normalized background image data. A third group includes the remaining pixels. An initial estimate for the object boundary is adjusted iteratively based on the groupings, followed by application of an active contour model.
摘要翻译：图像帧的图像数据分为三组。在一组中是作为导出运动边界的一部分的图像数据，以及与归一化背景数据中的对应点至少相差阈值的图像数据。在另一组中是与归一化背景图像数据紧密对应的图像数据。第三组包括剩余的像素。基于分组迭代地对对象边界进行初始估计，随后应用主动轮廓模型。

90. 发明授权

US06584224B2 Template matching using correlative auto-predicative search 有权
公开(公告)号：US06584224B2
公开(公告)日：2003-06-24
申请号：US09938344
申请日：2001-08-23
申请人： Shijun Sun , HyunWook Park , Yongmin Kim
发明人： Shijun Sun , HyunWook Park , Yongmin Kim
IPC分类号： G06K964
CPC分类号： G06K9/6203
摘要： A template is analyzed to determine a step size for searching within a search area. First, the template is padded with pixels to increase its size. Cross-correlation between the padded template and the original template leads to identification of an effective step size. Step sizes for each of horizontal and vertical axes are derived. Windows of the search area, selected based on the step size, then are tested in a fast search stage by correlating the template to the window. Any tested window which has a correlation coefficient exceeding a specific value is a local match. A full search of the vicinity of the local match then is performed for all potential windows within an area bounded by one step to either side of the local match along either axis. The location(s) corresponding to the highest correlation(s) exceeding the threshold value are matches.

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