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发明授权
CN101653007B 控制压缩数据量的方法 失效 - 权利终止 转让

控制压缩数据量的方法
摘要：
公开了一种用于压缩一组数字图像以便在整个组内实现平均压缩数据速率的方法。从该组图像中选择图像的子集。指定阈值观看距离和期望的平均压缩数据速率，并根据阈值观看距离来确定压缩参数。用压缩参数来压缩图像的子集以产生压缩数据，并对于来自图像的子集的压缩数据计算平均压缩数据速率。将图像的子集的平均压缩数据速率与期望的平均数据速率相比较。如果图像的子集的平均压缩数据速率小于或等于期望的平均压缩数据速率，则使用被用于图像子集的压缩参数来压缩不在图像子集中的来自图像序列的其余图像。否则，将阈值观看距离修改为更大的距离并重复压缩过程。
摘要（英）：

A method is disclosed for compressing a set of digital images to achieve an average compressed data rate over the entire set. A subset of images are selected from the set of images. A threshold viewing distance and a desired average compressed data rate are specified, and compression parameters are determined from the threshold viewing distance. The subset of images is compressed with the compression parameters to produce compressed data, and an average compressed data rate is calculated for the compressed data from the subset of images. The average compressed data rate for the subset of images is compared to the desired average data rate. If the average compressed data rate for the subset of images is less than or equal to the desired average compressed data rate, remaining images from the image sequence that are not in the subset of images are compressed using the compression parameters that were used for the subset of images. Otherwise, the threshold viewing distance is modified toa larger distance and the compression process is repeated.

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