In this paper, a novel RDH scheme by flipping pattern pairs with opposite center pixel (PPOCPs) in binary images is proposed, aiming at decreasing the distortion while increasing the embedding payload. First, 25 patterns in the $3\times 3$ block are designed which construct the PPOCPs according to the distance level providing a guarantee for reversibility. Then, a balanced score is designed which considers both visual distortion and embedding payload to select the optimal PPOCP, and the secret messages are embedded in the optimal PPOCP. For the receiver, the secret messages can be extracted precisely and the original binary image can be recovered by scanning the optimal PPOCP. PPOCP is a novel RDH model which fully considers the visual distortion caused by flipping pixels. Experimental results demonstrate the feasibility of the proposed RDH method for binary images, and the visual quality is satisfactory under high embedding payload and smallest pure flipping rate.

本文提出了一种新颖的RDH方案，该方案通过翻转二进制图像中具有相反中心像素（PPOCP）的图案对来实现，目的是减少失真，同时增加嵌入有效载荷。首先，$3\times 3$设计了根据距离级别构造PPOCP的模块，为可逆性提供了保证。然后，设计一个兼顾视觉失真和嵌入有效载荷的平衡分数，以选择最佳PPOCP，并将秘密消息嵌入最佳PPOCP中。对于接收者，可以通过扫描最佳PPOCP精确提取秘密消息，并恢复原始二进制图像。PPOCP是一种新颖的RDH模型，它充分考虑了像素翻转引起的视觉失真。实验结果证明了提出的RDH方法用于二值图像的可行性，并且在高嵌入有效载荷和最小纯翻转率下的视觉质量令人满意。