投影与光照方向一致性的图像篡改检测

doi:10.13190/j.jbupt.2014.05.013

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (5): 61-65.doi: 10.13190/j.jbupt.2014.05.013

投影与光照方向一致性的图像篡改检测

牛少彰¹, 黄艳丽¹, 孙晓婷²

1. 北京邮电大学智能通信软件与多媒体北京市重点实验室, 北京 100876;
2. 北京邮电大学理学院, 北京 100876

收稿日期:2014-01-13 出版日期:2014-10-28 发布日期:2014-11-07
作者简介:牛少彰(1963- ), 男, 教授, 博士生导师, E-mail: szniu@bupt.edu.cn.
基金资助:
国家自然科学基金项目(61070207,61370195);北京市自然科学基金项目(4132060);"十二五"国家密码发展基金密码理论课题项目(MMJJ201201002)

Image Tampering Detection by Consistency of Projection and Lighting Direction

NIU Shao-zhang¹, HUANG Yan-li¹, SUN Xiao-ting²

1. Beijing Key Laboratory of Intelligent Telecommunication Software and Multimedia, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2014-01-13 Online:2014-10-28 Published:2014-11-07

摘要/Abstract

摘要：

针对在自然光照条件下拍摄的图像遭到篡改的情况,提出了一种新的篡改检测方法. 光照射到物体上在物体表面会发生漫反射现象,同时会在投影平面上产生阴影,一旦图像遭到篡改很难保持这些自然特征的一致性. 因此,根据物体表面估计出的光照方向与投射阴影得到的光源区域的一致性,不仅可以检测有多个物体的篡改图像,还可以检测出只有1个物体的图像是否被篡改.

关键词: 光照方向, 朗伯模型, 投射阴影, 篡改检测

Abstract:

A new forgery detection scheme is proposed in case of modification of images formed naturally. Illuminating an object leads to make diffuse refection on surface of the object, its shadow appears in the projection plane. Once images are tampered, it is difficult to maintain the consistency of these natural features. Therefore, the uniformity between the direction of light estimated with an object in a photographic and the area of the light direction on the basis of cast shadow, will not effectively work for a detected image of multiple objects, but determine if an image with only one is tampered or not.

Key words: illuminating direction, Lambertian model, cast shadow, tampering detection

中图分类号:

TN911.73

牛少彰, 黄艳丽, 孙晓婷. 投影与光照方向一致性的图像篡改检测[J]. 北京邮电大学学报, 2014, 37(5): 61-65.

NIU Shao-zhang, HUANG Yan-li, SUN Xiao-ting. Image Tampering Detection by Consistency of Projection and Lighting Direction[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2014, 37(5): 61-65.

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投影与光照方向一致性的图像篡改检测

Image Tampering Detection by Consistency of Projection and Lighting Direction

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