Invisible watermark identification method and apparatus, and storage device
A recognition method and invisible technology, applied in image data processing, instruments, electrical components, etc., can solve problems such as invisible watermarks that cannot be recognized
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[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0047] Aiming at the method of embedding the invisible watermark in which the value in the first row and fourth column of the upper triangular matrix is changed to the information value of the invisible watermark, this case proposes a technical means to identify the invisible watermark. The key is to process the values in the first row and fourth column of the upper triangular matrix containing the invisible watermark information to o...
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