JPEG2000是一种新的静止图像压缩标准，与JPEG相比，对于具有同样视觉质量的灰度等级图像和彩色图像，JPEG2000能提供更高的压缩率。
The new still image compression standard, JPEG2000, provides higher compression rates for the same visual quality for gray scale and color images than JPEG.
给出了一种基于图像各彩色分量灰度统计特征期望值和全局标准差作为阈值的彩色图像灰度化方法。
An approach for color image gray processing based on threshold of gray scale statistic mean value and global standard deviation of each color component is presented.
将该流程应用到了几种不同类型的数字彩色图像，综合评价分数表明，该评测的标准图像为A等印刷品。
The evaluation process was applied on some different types of digital color image, and comprehensive scores show that the standard image is the print of grade a.
将该流程应用到了几种不同类型的数字彩色图像，综合评价分数表明，该评测的标准图像为A等印刷品。
The evaluation process was applied on some different types of digital color image, and comprehensive scores show that the standard image is the print of grade a.
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