Method and device for embedding and recovering prime image from image with visible watermark
A watermark embedding, original image technology, applied in image communication, pulse modulated TV signal transmission, selective content distribution, etc., can solve the problems of inaccurate recovery and compression, avoid visual impact, avoid block effect and boundary effect, Quick operation effect
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[0048] In the embodiment of the present invention, the original image is a data block that records the pixel values of pixels. When the visible watermark is embedded in the original image, the visible watermark is first embedded according to the size of each visible watermark and the corresponding initial position of each visible watermark. Expand the basic area of each visible watermark to obtain the final area embedded in each visible watermark, construct an additional data block, and store information such as the position of the final area, the valid data of the original image corresponding to the final area, and the watermark mask table in the additional data block , connect the constructed additional data block to the tail of the image embedded with the visible watermark; when restoring the original image, restore the original image according to the information stored in the additional data block.
[0049]Among them, the effective data of the original image correspondi...
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