作者: Shih-Lung Tsai , Chao-Hua Wen
DOI: 10.1007/978-3-642-39265-8_9
关键词:
摘要: This paper proposed a new visual cryptography scheme with the stereoscopic display which showed and accurately decrypted hidden information for gray images. Results indicated that contrast ratio pixel disparity of stereo-image were key problems would impact on perceived quality image. Next, this research performed subjective experiment shifting pixels between both left right images to investigate effects full HD stereo-display film-pattern-retarder technology. In addition, font size addressed as well. revealed thresholds 2 7 pixels. To alphabets, 50 points was lower boundary show information. numeric, 45 over different ratios.