基于彩色LBP的隐蔽性复制-粘贴篡改盲鉴别算法

现有的复制-粘贴盲鉴别算法大多忽略图像彩色信息，导致对隐蔽性篡改方式的检测率较低，基于此，本文提出一种基于彩色局部二值模式（Color local binary patterns，CoLBP）的隐蔽性复制-粘贴盲鉴别算法.算法首先对彩色图像进行预处理，即建立彩色LBP纹理图像，从而实现彩色信息与LBP纹理特征的融合；其次重叠分块并提取灰度共生矩阵（Gray level co-occurrence matrix，GLCM）特征；最后，提出改进的kd树和超平面划分标记split搜索方法，快速匹配图像块，并应用形态学操作去除误匹配，精确定位复制-粘贴区域.实验结果表明，本算法对隐蔽性复制-粘贴篡改定位准确，并对模糊、噪声、JPEG重压缩后处理操作有很好的鲁棒性.

Covert Copy-move Forgery Detection Based on Color LBP

Since negligence of color information in detecting copy-move forgeries leads to low accuracy in detection of in covert tampering, a novel method using color local binary patterns (CoLBP) is proposed. It involves the following three steps: first, establish color LBP texture image, which is a preprocessing of image and a combination of color information and LBP texture; second, divide into overlapping blocks and extract gray level co-occurrence matrix (GLCM) features; finally, match image blocks by the improved kd tree and split partition, remove the false matched blocks using morphological operation and then detect the resulting copy-move regions. Experimental results show that our algorithm is effective for covert tampering, and exhibits high robustness even when an image is distorted by blur, noise and JPEG recompression.