摘要
Abstract
In order to solve the defect such as poor invisibility of the current image watermarking algorithm in the face of embedding large watermark capacity ,in this paper ,digital image watermark embedding and extracting algorithm based on maximum wave superposition and scale is proposed .First ,based on the low pixel modified LSB embedding operator ,prelimi-nary watermark information is imbedded ,then image is transformed to discrete cosine domain ,the remaining watermark su-perimposes to the maximum ,the watermark embed complete mechanism is designed ,finally ,the watermarked image con-ducts scaling attack ,and then extracts the watermark .The experimental data show that compared with the current image watermarking algorithm ,in the face of watermark embedding capacity is large ,the algorithm in this paper has higher securi-ty ,strong invisibility and anti-attack .关键词
图像水印/LSB/DCT/水纹叠加/水纹容量/水纹完整嵌入机制Key words
image watermarking/LSB/DCT/wave superposition/water capacity/complete watermark embedding mechanism分类
信息技术与安全科学
