...图像量化；人眼视觉特性；脉冲耦合神经网络；霍夫曼编码 [gap=1150]Key words: signal and information processing; image quantization; human visual characteristics; pulse coupled neural network; Huffman coding ...
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color image quantization 彩色图像颜色量化
image characteristic quantization 图像特征量化
image vector quantization 图像矢量量化
quantization image 量化图像
At first, it quantizes the image coefficient vector gotten from DWT with the lattice vector quantization technology, then imbeds the watermark signal into the coefficient.
该算法先通过格矢量量化技术对经d WT变换后的宿主图像的系数矢量进行格矢量量化，然后将水印信号嵌入到量化后的系数中。
It considered the spatial information of images (which was often neglected), and segmented an image following two steps: color quantization and spatial segmentation.
该方法充分考虑到图像的空间信息，对图像的分割采用两个步骤：颜色量化和图像空间分割。
In this method, the original image 's feature is extracted by using wavelet transform and quantization. The feature information is changed into watermark by the chaotic sequence encryption.
该方法在一定的量化标准下利用小渡变换提取图象的特征信息，通过混沌序列对其加密生成数字水印。
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