The blind watermark is obtained by replacing the value of the embedded pixel of the original hostimage with the average of adjacent pixels.
通过将水印嵌入点的宿主图像的像素值更改为其近邻像素值的均值,而实现“盲水印”的提取。
2
Methods Based on wavelet transform of watermark image and hostimage, low-frequency ingredient of watermark is embedded in low-frequency part of hostimage.
方法通过对宿主图像和水印图像的小波变换,该算法把水印图像的低频成分嵌入到原始宿主图像的低频部分。
3
The meaningful gray image is serially processed into watermark signal and embedded into the DC elements of the block DCT coefficient matrix of the hostimage.