信息技术.连续声调静止图像的无损的或接近无损的压缩.基线

[中文适用范围]： 本建议书 I 国际标准定义了一组无损（位保留）和近无损（其中每个重建样本的误差受预定义值限制）压缩方法，用于编码连续色调、灰度或彩色数字静态图像。 本建议 I 国际标准 - - - - 规定了将源图像数据转换为压缩图像数据的过程；指定将压缩图像数据转换为重建图像数据的过程；指定压缩图像数据的编码表示；提供有关如何在实践中实施这些流程的指导。 [外文原描述]： This Recommendation | International Standard defines a set of lossless (bit-preserving) and nearly lossless (where the error for each reconstructed sample is bounded by a pre-defined value) compression methods for coding continuoustone, gray-scale, or colour digital still images. This Recommendation | International Standard ? specifies a process for converting source image data to compressed image data; ? specifies processes for converting compressed image data to reconstructed image data; ? specifies coded representations for compressed image data; ? provides guidance on how to implement these processes in practice.