ISO/IEC 15444-10:20 11定义了一组用于编码连续色调、双层、灰度、彩色数字体积图像或多分量体积图像的无损(比特保留)和有损压缩方法。这组方法扩展了Rec中描述的核心编码系统中的元素。那个？T.800 ISO/IEC 15444-1和建议。ITU-T T.801 ISO/IEC 15444-2。与编码和解码有关的扩展被定义为可以与Rec中描述的编码和解码过程结合使用的过程。ITU-T T.800 ISO/IEC 15444-1和建议。ITU-T T.801 ISO/IEC 15444-2。每个编码或解码扩展应仅与特定编码过程组合使用，并且仅根据本文阐述的要求使用。ISO/IEC 15444-10:20 11还定义了压缩数据格式的扩展，即。e.交换格式和缩写格式。 特别是对于Rec。ITU-T T.801 ISO/IEC 15444-2，ISO/IEC 15444-10:20 11支持以下扩展: 可变DC偏移； 任意小波变换核； 多组分变换； 非线性变换； 感兴趣区域。

ISO/IEC 15444-10:2011 defines a set of lossless (bit-preserving) and lossy compression methods for coding continuous-tone, bi-level, grey-scale, colour digital volumetric images, or multi-component volumetric images. This set of methods extends the elements in the core coding system described in Rec. ITU？T T.800 | ISO/IEC 15444-1 and Rec. ITU-T T.801 | ISO/IEC 15444-2. Extensions which pertain to encoding and decoding are defined as procedures which may be used in combination with the encoding and decoding processes described in Rec. ITU-T T.800 | ISO/IEC 15444-1 and Rec. ITU-T T.801 | ISO/IEC 15444-2. Each encoding or decoding extension shall be used only in combination with particular coding processes and only in accordance with the requirements set forth herein. ISO/IEC 15444-10:2011 also defines extensions to the compressed data format, i.e. interchange format and the abbreviated formats. In particular, for Rec. ITU-T T.801 | ISO/IEC 15444-2, the following extensions are supported by ISO/IEC 15444-10:2011:

• variable DC offset;
• arbitrary wavelet transform kernels;
• multi-component transformations;
• non-linear transformations;
• region-of-interest.