ISO/IEC 14495-2:2003 信息技术.连续色调静态图像的无损和近似无损压缩.第2部分：扩充

标准编号：ISO/IEC 14495-2:2003

中文名称：信息技术.连续色调静态图像的无损和近似无损压缩.第2部分：扩充

英文名称：Information technology — Lossless and near-lossless compression of continuous-tone still images: Extensions — Part 2:

发布日期：2003-04

标准范围

ISO/IEC 14495-2:20 03定义了一组用于编码连续色调（包括双层）、灰度或彩色数字静止图像的无损（比特保留）和接近无损（其中每个重构样本的误差由预定义值限定）压缩方法。ISO/IEC 14495-2:20 03:指定用于将源图像数据转换为压缩图像数据的过程的扩展（包括算术编码、接近无损编码的扩展、预测的扩展和哥伦布编码的扩展）；指定用于将压缩图像数据转换为重构图像数据的过程的扩展，包括用于反向颜色变换的样本变换的扩展；指定压缩图像数据的编码表示；就如何在实践中实施这些流程提供指导。

ISO/IEC 14495-2:2003 defines a set of lossless (bit-preserving) and nearly lossless (where the error for each reconstructed sample is bounded by a predefined value) compression methods for coding continuous-tone (including bi-level), gray-scale, or colour digital still images.

ISO/IEC 14495-2:2003:

• specifies extensions (including arithmetic coding, extension of near lossless coding, extension of prediction and extension of Golomb coding) to processes for converting source image data to compressed image data;
• specifies extensions to processes for converting compressed image data to reconstructed image data including an extension for sample tranformation for inverse colour transforms;
• specifies coded representations for compressed image data;
• provides guidance on how to implement these processes in practice.

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