提出了一种基于自适应四叉树分形编码的数字水印技术。
This article introduces a digital watermarking technology based on adaptive quadtree fractal coding.
提出了基于四叉树分形编码的水印算法，通过在不同寻找区域中搜索最佳匹配定义域块来嵌入水印。
This paper proposes a watermarking algorithm based on quadtree fractal coding, which is to search for the optimized matched domain blocks in different regions and to embed the watermarking.
对原始图像进行四叉树分形编码后，通过给定子块在不同的寻找区域中搜索其最佳匹配父块来嵌入水印。
After the original image is maked to quadtree fractal coding, we embed watermarking into it by range blocks searching its most-matched domain blocks in different search regions.
理论分析和实验结果表明，相对于一般的分形及零树编码方式，在图像效果方面和压缩比上，都有很大的提高。
Theoretical analysis and experimental results presented in the paper show that there are a higher compressing rate and quality of the image than the commonly fractal an…
根据29株NDVHN基因部分编码序列绘制NDV系统发育进化树，发现F及HN基因的分型结果大致相同。
Phylogenic tree from 29 strains were draw based on the NDV HN gene (part segment), and the result is similar to that of F gene.
根据29株NDVHN基因部分编码序列绘制NDV系统发育进化树，发现F及HN基因的分型结果大致相同。
Phylogenic tree from 29 strains were draw based on the NDV HN gene (part segment), and the result is similar to that of F gene.
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