引见数字水印中基于LSB算法和DCT变换算法实行嵌入和提取特殊水印的实

Introduce the experimental principle of embedding and extracting special watermarks based on LSB algorithm and DCT transform algorithm in digital watermarking, and then after attacking the special watermarks embedded based on LSB algorithm and DCT algorithm, verifying the extraction of watermarks after being attacked; The unattacked image and the attacked image use the peak signal-to-noise ratio to evaluate the image quality, and analyze the anti-attack ability of the image in the LSB algorithm and the DCT algorithm from the evaluation results.

The experimental principle of embedding and extracting special watermark based on LSB algorithm and DCT transformation algorithm is introduced in digital watermark, and then the special watermark embedded based on LSB algorithm and DCT algorithm is attacked to test the extraction of watermark after attack;

This paper introduces the experimental principle of embedding and extracting special watermarks based on LSB algorithm and DCT transform algorithm in digital watermarking, and then attacks the special watermarks embedded based on LSB algorithm and DCT algorithm to test the extraction of watermarks after being attacked; evaluates the quality of image effect with peak signal-to-noise ratio (PSNR) for the non attacked image and the attacked image, and analyzes the L Sb algorithm and DCT algorithm in the image anti attack ability.<br>