Qiangbo Huang

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In this paper, a new image compression algorithm based on decreasing bits coding, a conception of compression cell, and compression operator about a number of consecutive Z are put forward. The basic idea is as follows. First, wavelet coefficients, with adaptive threshold to determine the relationship are divided into three situations. They are positive P(More)
In order to improve the invisibility and the robustness of semi-fragile watermarking, the paper first brings up the idea which embedding watermark based on the attackspsila characteristic, brings forward the region segmentation operator and the double-step embedding method. The paper puts forward the characteristic and its representation in DWT transform(More)
An image classification method based on wavelet transform was brought up, and it adopted the human visual features model and analyzed the image parameter characteristics in smooth and texture regions. It put up optimum carrier image selecting method of original image to be hidden while analyzing the differences between the carrier and being hidden image. On(More)
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