本建议|国际标准定义了一种标准但可选的文件格式，用于使用JPEG 2000文件格式系列体系结构存储复合图像。该格式是建议ITU-T T.800 | ISO/IEC 15444-1附录I中定义的JP2文件格式的扩展，并使用了建议ITU-T T.801 | ISO/IEC 15444-2附录M中定义的JP2文件格式和JPX文件格式的框。该建议|国际标准适用于存储多页、具有混合内容的图像，和/或需要比JP2中提供的更多结构的图像。 实现此文件格式的应用程序应按照本建议|国际 标准本建议|国际标准: ? 指定一个二进制容器，其中包含多个用于表示图像的双层连续色调图像 复合图像； ? 指定一种机制，通过该机制，可以根据需要将多个图像组合为单个复合图像 关于混合光栅内容（MRC）模型； ? 指定在布局对象、页面和页面的层次结构中对多个图像进行分组的机制 收藏； ? 指定用于存储JPEG 2000和其他压缩图像数据格式的机制； ? 指定一种机制，通过该机制，元数据可以包含在本建议指定的文件中| 国际标准。

This Recommendation | International Standard defines a normative but optional file format for storing compound images using the JPEG 2000 file format family architecture. This format is an extension of the JP2 file format defined in Rec. ITU-T T.800 | ISO/IEC 15444-1 Annex I and uses boxes defined for both the JP2 file format and the JPX file format defined in Rec. ITU-T T.801 | ISO/IEC 15444-2 Annex M. This Recommendation | International Standard is useful for applications storing multiple pages, images with mixed content, and/or images that need more structure than provided in JP2. Applications that implement this file format shall implement it as described in this Recommendation | International Standard. This Recommendation | International Standard: ? specifies a binary container for multiple bi-level and continuous-tone images used to represent a compound image; ? specifies a mechanism by which multiple images can be combined into a single compound image, based on the mixed raster content (MRC) model; ? specifies a mechanism for grouping multiple images in a hierarchy of layout objects, pages and page collections; ? specifies a mechanism for storing JPEG 2000 and other compressed image data formats; ? specifies a mechanism by which metadata can be included in files specified by this Recommendation | International Standard.