Image Lossless Data Embedding Method Based on Double Threshold
A dual-threshold, data-based technology, applied in image data processing, image data processing, instruments, etc.
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] The principle of this dual-threshold image lossless data embedding method:
[0031] Prediction error method: Image lossless data embedding can be carried out in the airspace. Since the natural image has obvious continuity in the airspace, the correlation is too strong, and the information redundancy is small, which is reflected in the relatively flat information distribution. Therefore, the embedded information is small, and the image after embedding data Big change, low PSNR. Through the prediction error transformation of the image, the continuity in the prediction error is not obvious, the correlation becomes weaker, and the information redundancy is large, which is reflected in the relatively sharp information distribution, so the embedded information is large, the image changes after the embedded data is small, and the PSNR is high.
[0032]...
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