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61. 发明授权

US08260071B2 Method, system and computer program product for providing entropy constrained color splitting for palette images with color-wise splitting 有权
标题翻译：方法，系统和计算机程序产品，用于通过色彩分割为调色板图像提供熵约束的颜色分割
公开(公告)号：US08260071B2
公开(公告)日：2012-09-04
申请号：US13186857
申请日：2011-07-20
申请人： En-hui Yang , Longji Wang
发明人： En-hui Yang , Longji Wang
IPC分类号： G06K9/46
CPC分类号： H04N1/64 , H04N19/103 , H04N19/147 , H04N19/182 , H04N19/186 , H04N19/19 , H04N19/91 , H04N19/94 , H04N19/96
摘要： A method, system and computer program product for progressively encoding a digitized color image is provided. This involves: initializing a tree structure with at least one starting leaf node; determining at least one representative color for each starting leaf node; and growing the tree structure by (i) selecting a leaf node n to become a non-leaf node n linked to two new leaf nodes based on an associated achievable cost; (ii) creating the two new leaf nodes by re-allocating each color in n; (iii) determining a representative color for each of the two new leaf nodes; and (iv) encoding the index information associated with the leaf node n, the representative colors of the two new leaf nodes, and information regarding a plurality of pixels of the digitized color image corresponding to the two representative colors of the two new leaf nodes.
摘要翻译：提供了用于逐行编码数字化彩色图像的方法，系统和计算机程序产品。这包括：使用至少一个起始叶节点初始化树结构; 确定每个起始叶节点的至少一个代表颜色; 并且通过（i）基于相关联的可实现成本来选择叶节点n以变成链接到两个新叶节点的非叶节点n; （ii）通过在n中重新分配每种颜色来创建两个新的叶节点; （iii）确定两个新叶节点中的每一个的代表颜色; 以及（iv）编码与叶节点n相关联的索引信息，两个新叶节点的代表颜色，以及关于与两个新叶节点的两个代表颜色相对应的数字化彩色图像的多个像素的信息。

62. 发明授权

US08194990B2 Method, system and computer program product for optimization of data compression with iterative cost function 有权
标题翻译：用迭代成本函数优化数据压缩的方法，系统和计算机程序产品
公开(公告)号：US08194990B2
公开(公告)日：2012-06-05
申请号：US12491764
申请日：2009-06-25
申请人： En-hui Yang , Longji Wang
发明人： En-hui Yang , Longji Wang
IPC分类号： G06K9/36
CPC分类号： H04N1/415 , G06T9/008 , H04N19/126 , H04N19/13 , H04N19/147 , H04N19/19 , H04N19/192 , H04N19/60 , H04N19/90 , H04N19/93
摘要： A method, system and computer software product for improving rate-distortion performance while remaining faithful to JPEG/MPEG syntax, involving joint optimization of Huffman tables, quantization step sizes and quantized coefficients of a JPEG/MPEG encoder. This involves finding the optimal coefficient indices in the form of (run, size) pairs. By employing an interative process including this search for optimal coefficient indices, joint improvement of run-length coding, Huffman coding and quantization table selection may be achieved. Additionally, the compression of quantized DC coefficients may also be improved using a trellis-structure.
摘要翻译：一种方法，系统和计算机软件产品，用于提高速率失真性能，同时保持对JPEG / MPEG语法的忠诚，包括联合优化霍夫曼表，量化步长和JPEG / MPEG编码器的量化系数。这涉及以（运行，大小）对的形式找到最优系数指数。通过采用包括对最优系数指标的搜索的交互处理，可以实现游程长度编码，霍夫曼编码和量化表选择的联合改进。另外，也可以使用网格结构来改进量化DC系数的压缩。

63. 发明申请

US20070071339A1 Method, System and Computer Program Product for Providing Entropy Constrained Color Splitting for Palette Images with Color-Wise Splitting 有权
标题翻译：方法，系统和计算机程序产品为色调分割的调色板图像提供熵约束色彩分割
公开(公告)号：US20070071339A1
公开(公告)日：2007-03-29
申请号：US11534956
申请日：2006-09-25
申请人： En-hui Yang , Longji Wang
发明人： En-hui Yang , Longji Wang
IPC分类号： G06K9/46
CPC分类号： H04N1/64 , H04N19/103 , H04N19/147 , H04N19/182 , H04N19/186 , H04N19/19 , H04N19/91 , H04N19/94 , H04N19/96
摘要： A method, system and computer program product for progressively encoding a digitized color image with M distinct colors allocated to a set of pixels using a data processing system, the digitized color image being provided by assigning each of the M distinct colors to an associated subset of pixels in the set of pixels, is provided. This involves: (a) initializing a tree structure by providing at least one starting leaf node comprising a set of colors from the M distinct colors; (b) determining at least one representative color for each starting leaf node; and (c) growing the tree structure by (i) selecting a leaf node n to become a non-leaf node n linked to two new leaf nodes based on an associated achievable cost, wherein the associated achievable cost is determined by 1) determining an associated change in distortion resulting from turning the leaf node into the non-leaf node linked to the two new leaf nodes; 2) determining an associated increase in entropy rate resulting from turning the leaf node into the non-leaf node linked to the two new leaf nodes; and, 3) determining the associated achievable cost based on the associated change in distortion and the associated increase in entropy rate; (ii) creating the two new leaf nodes by allocating each color in n to one of the two new leaf nodes; (iii) determining a representative color for each of the two new leaf nodes; and (iv) encoding the index information associated with the leaf node n, the representative colors of the two new leaf nodes, and information regarding a plurality of pixels of the digitized color image corresponding to the two representative colors of the two new leaf nodes.
摘要翻译：一种用于使用数据处理系统对分配给一组像素的M个不同颜色逐渐编码数字化彩色图像的方法，系统和计算机程序产品，所述数字化彩色图像通过将每个M个不同颜色分配给相关联的子集提供了像素集中的像素。这涉及：（a）通过提供包括来自M个不同颜色的一组颜色的至少一个起始叶节点来初始化树结构; （b）为每个起始叶节点确定至少一个代表颜色; 以及（c）通过以下方式来生长树结构：（i）基于相关联的可实现成本，选择叶节点n以变成与两个新叶节点相关联的非叶节点n，其中相关联的可实现成本通过以下方式确定：1）通过将叶节点转换为链接到两个新叶节点的非叶节点而导致的失真相关联的变化; 2）确定通过将叶节点转换为链接到两个新叶节点的非叶节点而导致的相关联的熵率增加; 以及3）基于相关的失真变化和相关联的熵率增加来确定相关的可实现成本; （ii）通过在两个新叶节点中的一个中分配每个颜色来创建两个新叶节点; （iii）确定两个新叶节点中的每一个的代表颜色; 以及（iv）编码与叶节点n相关联的索引信息，两个新叶节点的代表颜色，以及关于与两个新叶节点的两个代表颜色相对应的数字化彩色图像的多个像素的信息。

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