ISO/IEC 14492:2019 信息技术 双面图像损害/无损耗译码
标准编号:ISO/IEC 14492:2019
中文名称:信息技术 双面图像损害/无损耗译码
英文名称:Information technology — Lossy/lossless coding of bi-level images
发布日期:2019-03
标准范围
本推荐性国际标准定义了对双层图像和图像集(由多页组成的文档)进行编码的方法。它特别适用于由文本和抖动(半色调)数据组成的双层图像。所定义的方法允许无损(比特保留)编码、有损编码和渐进编码。在渐进编码中,第一图像是有损的;后续图像可以是有损的或无损的。该推荐国际标准还定义了用于封装编码的双层图像数据的文件格式。
This Recommendation International Standard defines methods for coding bi-level images and sets of images (documents consisting of multiple pages). It is particularly suitable for bi-level images consisting of text and dithered (halftone) data.
The methods defined permit lossless (bit-preserving) coding, lossy coding, and progressive coding. In progressive coding, the first image is lossy; subsequent images may be lossy or lossless.
This Recommendation International Standard also defines file formats to enclose the coded bi-level image data.
标准预览图


