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81. 发明授权

US06823082B2 Method of compressing digital images 失效
标题翻译：压缩数字图像的方法
公开(公告)号：US06823082B2
公开(公告)日：2004-11-23
申请号：US09860109
申请日：2001-05-16
申请人： Xiaoping Hu
发明人： Xiaoping Hu
IPC分类号： G06K900
CPC分类号： G06T9/00
摘要： A method of compressing digital representations of images stores the images in multiple subsampling quality scales in a progressive manner such that a higher quality scale contains only data incremental to the data in an adjacent lower quality scale. The data in each quality scale is transformed, quantized, and entropy encoded. A discrete wavelet cosine transformation combining frequency transformation features of a discrete cosine transformation and spatial transformation features of a wavelet transformation is provided. Sequences of subsampling quality scales are provided for multi-scale representations of images. A novel context selection method is used which treats color components and coefficients of different positions differently. An image compressed in a given quality scale can be transmitted or decompressed progressively allowing progressive downloading or transmission over the Internet.
摘要翻译：压缩图像数字表示的方法以渐进的方式将图像存储在多个子采样质量量表中，使得较高质量量表仅包含相邻较低质量量表中的数据增量的数据。每个质量量表中的数据被转换，量化和熵编码。提供了组合离散余弦变换的频率变换特征和小波变换的空间变换特征的离散小波余弦变换。为图像的多尺度表示提供了子采样质量标度的序列。使用一种新颖的上下文选择方法，其不同地处理不同位置的颜色分量和系数。以给定的质量标度压缩的图像可以逐渐传送或解压缩，允许通过因特网的逐行下载或传输。

82. 发明授权

US06205181B1 Interleaved strip data storage system for video processing 失效
标题翻译：交错条数据存储系统进行视频处理
公开(公告)号：US06205181B1
公开(公告)日：2001-03-20
申请号：US09041193
申请日：1998-03-10
申请人： Xiaoping Hu , Hungviet H. Nguyen , David Sokmin Kang
发明人： Xiaoping Hu , Hungviet H. Nguyen , David Sokmin Kang
IPC分类号： H04N712
CPC分类号： H04N19/423 , H04N19/61
摘要： A method and apparatus for storing a macroblock from a video data stream is disclosed. A macroblock is received, the macroblock having a plurality of blocks corresponding to a plurality of color space components and having a width defined by a plurality of pixels. According to a first aspect of the present invention, the macroblock is stored in a vertical strip format. According to a second aspect of the present invention, the contents of the plurality of blocks are interleaved. According to a third aspect of the present invention, the contents of the plurality of blocks are interleaved and the macroblock is then stored in a vertical strip format.
摘要翻译：公开了一种从视频数据流存储宏块的方法和装置。接收宏块，宏块具有与多个颜色空间分量对应的多个块，并且具有由多个像素定义的宽度。根据本发明的第一方面，宏块以垂直条格式存储。根据本发明的第二方面，多个块的内容被交织。根据本发明的第三方面，多个块的内容被交织，然后以垂直条格式存储宏块。

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