Research on VQ-Based Digital Image Watermarking
Dengyin Zhang · Computer Technology and Development · 2008
Vector quantization(VQ)-based digital watermarking technique plays a newly developed branch in digital watermarking research fields recently.Mainly researched on the VQ-based digital image watermarking technology.After briefly introducing watermarking technology and vector quantization,the principle of VQ-based digital watermarking technique is explicated.By analyzing several typical VQ-based digital image watermarking algorithms,the characteristic of VQ-based digital image watermarking algorithms is summed up.It is superior in the capability and embedded facility and has a very good robustness against VQ compression,but the watermark image quality needs to be enhanced.Further research is to combine it with the DCT,DWT and HVS to improve the imperceptibility.