JPEG 2000正式名称为ISO 15444，是一种基于离散小波变换的新型图像压缩方法，与基于离散余弦变换的JPEG压缩方法相比较，具有多分辨率表达、更好的去相关能力、高压缩比、按视觉模型量化等优点，并同时提供无损和有损压缩算法-JPEG 2000 is formally known as ISO 15444, is a discrete wavelet transform based on a new type of image compression methods, and based on the discrete cosine transform JPEG compression method, compared with the expression of multi-resolution, better related to ability, high compression ratio, by the visual model to quantify the advantages, as well as providing lossless and lossy compression algorithms