JPEG2000是新一代的静态图像压缩标准。

JPEG2000 is a new still image compression standard.

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感兴趣区域）作为新一代图像压缩标准JPEG2000所增加的一个功能。

ROI(Region Of Interest) method is a new function of JPEG2000. Applying ROI we can compress image with different accuracy in different region.

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主要对JPEG图像压缩标准中的DCT变换和量化部分提出了一些改进意见。

This paper mainly presents some improvements on computing discrete cosine transforms (DCT) and quantization part in the standard of JPEG image processing.

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