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基于ＤＷＴＳＶＤ压缩量化的数字图像盲水印算法
奇异值分解（ＳＶＤ） 离散小波变换 μ律压缩 量化索引调制 盲水印 数字水印
2018/6/11
为了解决奇异值分解（ｓｉｎｇｕｌａｒｖａｌｕｅｄｅｃｏｍｐｏｓｉｔｉｏｎ，ＳＶＤ）算法提取水印时需要原始载体图像的缺陷，以及
量化索引调制（ｑｕａｎｔｉｚａｔｉｏｎｉｎｄｅｘｍｏｄｕｌａｔｉｏｎ，ＱＩＭ）均匀量化不适用于非均匀信号的问题，通过引入 μ律压缩技术，
提出一种新的基于 ＤＷＴＳＶＤ压缩量化的数字图像盲水印算法。该算法对载体图像进行分块，对每一分块实施离
散小波变换（ｄｉｓｃｒｅ...
A New Unsupervised Change Detection Approach Based On DWT Image Fusion And Backtracking Search Optimization Algorithm For Optical Remote Sensing Data
Change Detection DWT Based Image Fusion Backtracking Search Optimization Algorithm (BSA)
2014/9/29
Change detection is one of the most important subjects of remote sensing discipline. In this paper, a new unsupervised change detection approach is proposed for multi-temporal remotely sensed optic im...