JPEG2000是一种新型的图像编码标准，具有优于JPEG标准的率-失真性能。但基于JPEG2000编码器的传统实现中存在大量计算冗余，使得编码器的实现需要大量编码时间和存储空间，为了降低降低计算复杂度，提出一个新的JPEG 2000图像尺寸大小转换算法，该算法可大幅度减少图像转换所需的运算量和时间。%JPEG2000 is a new image coding standard which can provide better rate-distortion performanc than the JPEG standard. But a lot of computation redundancy exists in the traditional implementation of JPEG2000 encoder, in particular at the lower bit rate. That makes the encoder need more encoding time and working memory size. In order to reduce the computational complexity, the paper proposed a new JPEG 2000 image size conversion algorithm, the algorithm can greatly reduce the image conversion required computation amount and time.
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