Quality Evaluation of Digital Image Watermarking

Abstract

AbstractMany kinds of distortion take place during the digital image acquisition, processing, compression, storage, transmission and copy. All of these distortions would lead to a decline in visual quality of the image. Therefore, the image quality assessment is very important for us. Digital watermark is an important application of image processing. Different applications require different watermark techniques, and the different watermark techniques require different evaluation criteria. Currently, there have not a complete evaluation system about digital watermark. Because the uniform description of the performance, the test methods, the method of attack, the standard test procedure have not been established. How to judge the performance of a watermarking system is very important. In this paper, the evaluation of a watermarking system is associated to the watermark robustness, security, capacity and invisibility.KeywordsImage quality evaluationdigital watermarksubjective evaluationobjective evaluation