Color Level Logo Image Watermarking on Multi Color Space

摘要

Recently, an importance of digital copyright is increasing because an widespread distribution of digital content and imagery. And also a digital content can be easily copied by variety way that makes the new file indistinguishable from the original data then the content can be reproduced in large quantities. To the protection of the IP(Intellectual Property) rights of the owner, a digital watermarking technique used for authenticating the legal copyright and the distribution route if someone copied and illegally distributed multimedia data. So original owner may embed an additional information which is regard as copyright or IP of him(as like image, video and audio). In this paper for color level logo image watermarking, after wavelet transformed on multi color space(YIQ, YCbCr and YPbPr) and then, perceptual parameter is multiplied for the watermarking and we had embed the watermark image in the middle frequency space by LSB(Least Significant Bit) method.