Watermark Embedding for Direct Binary Searched Halftone Images by Adopting Visual Cryptography

• 作者: Min Xian Rongrong Ni Yangyang Wang Yao Zhao
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 工学
• 关键词: Data hiding HALFTONE DIRECT BINARY SEARCH VISUAL watermark.
• 年，卷（期）: 2018,（5）
• 页码范围: 255-265
• 页数: 11页
• 分类号: TP3

摘要

In this paper,two methods are proposed to embed visual watermark into direct binary search(DBS)halftone images,which are called Adjusted Direct Binary Search(ADBS)and Dual Adjusted Direct Binary Search(DADBS).DADBS is an improved version of ADBS.By using the proposed methods,the visual watermark will be embedded into two halftone images separately,thus,the watermark can be revealed when these two halftone images are overlaid.Experimental results show that both methods can achieve excellent image visual quality and decoded visual patterns.