Watermarking is a technique with which you can sign your name on the photo. It is a proof that you own the photo. Now anyone who tries to copy cannot do so because the watermark will be there in the photo.
The watermarked sign will show the rightful owner of the photo. Aoao Watermark for Photo (http://www.aoaophoto.com) is an easy-to-use photo watermark program which provides professional photo protection solutions for your digital photos. It's the best effective way to protect photo copyright from unauthorized using.
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A sigital Watermarking example in Matlab is in related links.
Image processing is the method of processing data in the form of an image. Image processing is not just the processing of image but also the processing of any data as an image. It provides security.
Image Processing classify as three type. (1) Low level image processing (noise removal, image sharpening, contrast enhancement) (2) Mid level image processing (segmentation) (3) High level image processing (analysis based on output of segmentation)
The signal processing hardware can be used for image processing also. DSP processors like TMS 6713 can be used in image processing also. The hardware is required for image capture also.
Its name specifies definition. To get image from any source especially hardware based any source is called as image acquisition in the image processing because without image receiving/acquisition, the processing on the image is not possible. It is the first step in the workflow.