local embedding 中文意思是什麼
local embedding
解釋
局部嵌入-
In order to adapt the scheme to both the color image and the gray image, while embedding the watermarking into the image, the scaling factors are determined by the local luminance feature and texture features of the image. it can improve the embedding strength and the watermarking robustness. from the experimental results, the stego - images are extremely robust to common image processing such as median filter, jpeg compression and denoising after adding the stochastic noises
2 、提出了一種新的基於小波變換和紋理特徵的數字水印演算法，該演算法依據從圖像小波域提取出的紋理特徵來選取水印的嵌入位置，較好地利用了圖像的紋理區域，既能掩蔽較多的噪聲，又能較好地抵抗jpeg壓縮等一般性攻擊，調節了數字水印技術中存在的不可見性與魯棒性之間的矛盾。 -
In the third part, the essences of steganography and disadvanges of common visual perception evaluation, such as psnr and wpsnr are studied. based on analysis local error that is introduced by embedding information, combining hvs, three objective perception evaluation method for steganography performance are proposed, which are based on human visual systems and local statistic error distribution respectively. in the steganalysis part, a steganography security statistic attack model and methods for some steganography methods are presented
在信息隱藏的性能評價方面，研究了常用的峰值信噪比，加權峰值信噪比等前人提出的感知性能評價準則，指出針對信息隱藏的性能評價不能單純從視覺特性出發，提出從信息隱藏的數據特性和感知特性出發，結合局部特性來考察失真誤差的變化的思想，並據此提出基於局部區域誤差統計分佈和視覺掩模方法評價信息隱藏性能的方法。
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