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1. 发明申请

WO0245017A3 METHOD FOR IMAGE COMPRESSION WITH OPTIMIZATION PARAMETERS 审中-公开
标题翻译：具有优化参数的图像压缩方法
公开(公告)号：WO0245017A3
公开(公告)日：2002-10-10
申请号：PCT/US0146739
申请日：2001-12-03
申请人： LIZARDTECH INC , MURPHY MICHAEL D , DOUGHERTY RANDALL L , BRADLEY JONATHAN N , FABER VANCE
发明人： MURPHY MICHAEL D , DOUGHERTY RANDALL L , BRADLEY JONATHAN N , FABER VANCE
IPC分类号： G06T7/00 , G06T9/00 , G06K9/46 , G06F15/16 , G06K9/36 , H03M3/00 , H03M7/30 , H03M7/32 , H03M7/40 , H04B1/10
CPC分类号： G06T9/00 , G06T7/0002
摘要： In image compression, certain less significant data may be discarded. When multiple sets of image data are involved, an issue may arise as to which sets of data contain the most significant data. The invention is directed to finding efficient computational solutions for the corresponding rate-distortion problem. In a case where there are end blocks which comprise an image, for each block a separate bit stream may be generated with a property that it can be truncated to a variety of discrete lengths. Associated with each length is a measure of distortion that the image would incur if the given block was truncated to a given length. Given a user-specified size for the image, it is desired to find a set of truncation lengths for each block such that the overall distortion to the image is minimized. Alternatively, a user may select a desired quality for the image. The solution provided by the invention is a heuristic based on priority cues to approximate the optimal truncation point so as to meet the desired criteria.
摘要翻译：在图像压缩中，某些较不重要的数据可能被丢弃。当涉及多组图像数据时，可能会出现关于哪组数据包含最重要数据的问题。本发明旨在为相应的速率 - 失真问题找到有效的计算解决方案。在存在包括图像的端块的情况下，对于每个块，可以生成具有可以截断为各种不连续长度的属性的单独位流。与每个长度相关联的是如果给定块被截断到给定长度，图像将产生失真的度量。给定图像的用户指定尺寸，期望为每个块找到一组截断长度，使得对图像的整体失真最小化。或者，用户可以为图像选择期望的质量。本发明提供的解决方案是基于优先级提示的启发式来近似最佳截断点以满足期望的标准。

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