The Theory And Method Research On Intellectual Property Rights Protection Technique Of Color Image

In recent years,because of the rapid development of Internet and multimedia technology,digital multimedia resources have been suffered from unauthorized tampering and forgery.This phenomenon becomes more and more easily and seriously infringed upon the legitimate rights and interests of copyright owners.So multimedia security gets more and more attention and effective protection property rights become an important research topic.This article made an intensive study of the intellectual rights protection technology of color image,which arranged from "the color image copyright protection and content authentication technology research” and started from the two aspects of the color image watermarking technology and the color image tampering detection technology.This article main content is as follows:1.This paper proposes a algorithm resists geometric attacks digital watermarking algorithm which based on quaternion radial harmonic Fourier moments(QRHFMs).The algorithm combines the geometric invariant property of quaternion radial harmonic Fourier moments with the correlation of the three color channels of color image.Firstly we computed the quaternion radial harmonic Fourier moments for the original color image,in order to keep the robustness,we selected the accurate QRHFMs magnitudes,then it took the method of the quantization index modulation for embedding the watermark.Simulation results showed that the proposed algorithm provided better imperceptibility and robustness against various attacks,including common image processing operations and geometrical attacks.2.Based on quaternion radial harmonic Fourier moments(QRHFMs),this paper proposes a digital image watermarking algorithm against geometric attacks.The algorithm combines the geometric invariance of QRHFMs with the correlation of the three color channels of color image.We first compute the QRHFMs of the original color image and select the accurate QRHFMs magnitudes.Then the watermark is embedded into the accurate QRHFMs magnitudes using quantization index modulation.Experimental results show that the proposed algorithm provides superb imperceptibility and robustness against various attacks,including common image processing operations and geometric attacks.3.This paper proposed a color image temper detection based on quaternion polar harmonic transform.The algorithm combined geometric invariant property of the quaternion polar harmonic transform with the correlation of the three color channels of color image.It can be directly used for color image tamper detection.Firstly we divided into many blocksbased on entropy rate superpixel segmentation,and combined the SURF feature points to determine local suspicious tamper area.Then divided it into overlapping circular blocks and computed the quaternion polar harmonic transform for each circular block as feature matching.Finally identified and marked the tamper area.Experimental results showed that the algorithm was not only maintaining high detection accuracy,but also greatly reduced the time complexity.