It can authenticate the possession of originality data that have embedded a secretinformation - watermarks.
Digital watermarks have also find its usage in secret communication communication counterwork.
For many digital image watermarks, geometric distortions are their weakness.
Dates, photo details and other EXIF information can be added as watermarks.
The watermarks are robust against LSB and crop attack.
According to zero - watermarking, a zero - embedding algorithm for multiple watermarks was proposed based on wavelet and chaos.
Following the synchronous valleys, the additive synchronous approach was adopted to locate the usable watermarks.
The original images and watermarks are transformed into a multi - frequent image to be embedded in watermark.
Security paper: Paper incorporating features , such as watermarks , etc, which make counterfeiting difficult.
Artists and other creative professionals may consider using their work samples as watermarks.
Experimental results show that the visually identical and the watermarks also successfully survive after many attacks.
There is relatively little information about watermarks, maybe you can watch a bilingual story to relax your mood, I wish you a happy day!
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