Data Hiding Technique Base on the Character of Mosaic Image

• Main Authors: Yuan-Hsun Liao, 廖元勳
• Other Authors: Ching-Tsorng Tsai
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/49002624270746572467

碩士 === 東海大學 === 資訊工程與科學系碩士在職專班 === 94 === In most data hiding for image techniques at present focus on how to hiding a great quantity of data on image and research of the goal that it is lowest to influence image quality. Many previous papers discussed about using the characteristic of the mosaic image to hide the data. But, to achieve the goal of hiding large number of data may reduce the quality of mosaic image. We propose a data hiding technique base on the character of mosaic image to achieve the goal of hiding data. First, candidate images will be obtained by analyzing between the source image and database images in wavelet transform process. Second, candidate images intersect compare with hiding data. Finally, mosaic image with data hiding will be generated. The experimental results show that the proposed method in this paper can hide a large number of data and hold the good quality of mosaic image. It also shows better PSNR values of carlo[2] .