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82. 发明授权

US06614939B1 Image compression apparatus and decoding apparatus suited to lossless image compression 失效
标题翻译：适用于无损图像压缩的图像压缩装置和解码装置
公开(公告)号：US06614939B1
公开(公告)日：2003-09-02
申请号：US09129456
申请日：1998-08-04
申请人： Masaki Yamauchi
发明人： Masaki Yamauchi
IPC分类号： G06K936
CPC分类号： G06T9/40 , H04N19/17 , H04N19/30 , H04N19/34 , H04N19/37 , H04N19/60 , H04N19/70
摘要： An image compression apparatus for outputting compressed image information that is suited to progressive image reproduction where completely lossless reproduction is possible without having to use large amounts of compressed image information. A decoding apparatus decodes the compressed image information and performs reproduction. The image compression apparatus performs image compression with a first segmentation for a first plane set that includes at one bit plane in block image information in the original image information. As a result, first region information composed of segmentation information showing a first segmentation result and luminance information is produced. The image compression apparatus also performs image compression with a second segmentation for a second plane set that includes at least one bit plane adjacent to the first plane set. Here, the first segmentation result is used as a standard. As a result, second region information composed of segmentation information and luminance information is produced. Compressed image information is then generated and outputted based on the first and second region information.
摘要翻译：一种用于输出适于逐行图像再现的压缩图像信息的图像压缩装置，其中完全无损再现是可能的，而不必使用大量的压缩图像信息。解码装置对压缩图像信息进行解码并进行再现。图像压缩装置对原始图像信息中的块图像信息中的一个位平面处的第一平面组进行第一分割。结果，产生由表示第一分割结果和亮度信息的分割信息组成的第一区域信息。图像压缩装置还对包括与第一平面组相邻的至少一个位平面的第二平面组进行第二分割来执行图像压缩。这里，第一分割结果被用作标准。结果，产生由分割信息和亮度信息组成的第二区域信息。然后基于第一和第二区域信息生成并输出压缩图像信息。

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