Color Filter Array Synthesis in Digital Image via Dictionary Re-demosaicing

摘要：

The goal of anti-forensic technique is to hide manipulation traces. We present a scheme of Color Filter Array (CFA) synthesis in digital images via dictionary redemosaicing. This is an anti-forensic technique to be against plurality of forensic methods based on CFA structure detection in images. First, through sparse representation on manipulated image, a dictionary is obtained. Then, arbitrary CFA de-mosaicing schemes are allowed to re-demosaic each dictionary atom. Finally, the manipulated image reconstructed using the re-demosaiced dictionary. Experimental results demonstrate that both satisfied image quality in terms of PSNR and stronger CFA characteristic are achieved.

关键词： CFA synthesis sparse representation dictionaryre-demosaicing

作者: Sunguangling Shenzhoubiao Chenyuejun

作者单位: Shanghai University, School of Communication and Information Engineering, Shanghai, 200072

会议类型: 国际会议

会议名称: 2010年IEEE多媒体信息网络与安全国际会议

会议地点: 南京

会议语种:英文

页码: 898-901

在线出版日期: 2010-11-01（万方平台首次上网日期，不代表论文的发表时间）