In the mean time, image database is widely used in many fields, which requires different image compression technologies according to special characteristics of images as well.
在此同时图像数据库作为图像存储的一种形式已经得到了广泛的应用，不同领域的图像数据库应用对图像压缩技术有着不同的要求。
High quality, low bit rate image compression method is one of the key technologies to develop downhole video logging instrument.
高清晰度，低比特率的图像压缩技术是研究井下电视的关键技术之一。
The image coding and compression technologies based on the JPEG2000 standard is studied in this article, which focus on region-of-interest (ROI) compression and EBCOT optimization algorithm.
本文主要基于JPEG2000标准来研究图像编码和压缩相关技术，其重点是感兴趣区域（ROI）的压缩和EBCOT算法的优化。
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