This paper chooses ROI by constant false alarm ratio (CFAR) detector, then compresses the image by JPEG2000 algorithm.

该文根据恒虚警率(CFAR)检测器确定roi区域，利用JPEG2000算法进行压缩。

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The experiment results show that the algorithm has good error feature and the compression efficiency is slightly lower than that of JPEG-LS and JPEG2000.

实验结果表明，本算法具有很好的抗误码性能，压缩效率比JPEG-LS和JPEG2000略有下降。

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After the analysis of the updating condition for index table and probability interval, an optimized algorithm based on partial parallel scheme was presented for arithmetic encoder(AE) in JPEG2000.

通过对索引表和概率间隔区间更新条件的分析，提出了一种JPEG2000算术编码器的部分并行优化算法。

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