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- W2367685083 abstract "Focuses on copyright protection for multimedia information on mobile terminals,proposed an improved semi-fragile blind digital watermarking algorithm based on DCT,it combined with the current popular smartphone platform Windows Mobile,developed an image authentication system used in smartphone.In the watermark embedding process,considering the characteristic of human visual system,the method adopts YUV color space and the luminance Y of the color image by using discrete cosine transform,and then the binary watermark is embedded in middle frequency in DCT coefficients,selection middle frequency coefficient by coefficient quantization and complexity of block,and according to increases the bit embedding quantity in feature-rich blocks principle to achieve.In addition,through Arnold transform for watermark image in order to enhance the security of the watermark,extraction of the watermark need not origin host image.Experimental results show that the proposed algorithm not only improves image quality evidently,but also is robust to JPEG." @default.
- W2367685083 created "2016-06-24" @default.
- W2367685083 creator A5012206117 @default.
- W2367685083 date "2010-01-01" @default.
- W2367685083 modified "2023-09-25" @default.
- W2367685083 title "Image Authentication System Design and Implementation Based on Windows Mobile" @default.
- W2367685083 hasPublicationYear "2010" @default.
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