The use of standard gray scale and color targets in the scene is required for correct camera exposure and positive printing.
在景物中设置标准灰阶标板和彩色靶标，其目的是为了确定正确的曝光量和正片印制。
The new still image compression standard, JPEG2000, provides higher compression rates for the same visual quality for gray scale and color images than JPEG.
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。
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.
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。
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