Aoao Photo Watermark
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Digital watermark also referred to as simply digital watermarking, a pattern of bits inserted into a digital image watermark, audio digital watermarks or video digital watermarks file that identifies the file's copyright information (author, copyrights, etc.). The name comes from the faintly visible digital watermark imprinted on stationery that identify the manufacturer of the stationery. The purpose of watermark is to provide copyright protection for intellectual property that's in digital format.
Unlike printed watermark, which are intended to be somewhat visible, digital watermarks are designed to be completely invisible, or in the case of audio clips, inaudible. Moreover, the actual bits representing the digital watermark must be scattered throughout the file in such a way that they cannot be identified and manipulated. And finally, the digital watermark must be robust enough so that it can withstand normal changes to the file (Removing digital watermarks), such as reductions from lossy compression algorithms.
Satisfying all these requirements of digital watermark is no easy feat, but there are a number of companies offering competing technologies. All of them work by making the digital watermark appear as noise - that is, random data that exists in most digital files anyway. To view a digital watermark, you need a special program that knows how to extract the digital watermark data.
Here we wanna say the connection between watermark and image, a visible watermark on image. In most, we have no those special programs, and we never know how to get those programs, we just want to put watermark on our digital images. We need protect our online photo's copyright to avert illegal copy and downloading, that is what we want.
The Limitation of Free Trial
1. The unregistered version of Aoao Watermark will put "DEMO" watermark on output photos.
2. No expiration.
3. No functional limitation.