一种改进的全变分(TV)修补模型

An improved TV inpainting model

目的提出一种全变分(TV)修补模型的改进方案,而且具有良好的边缘特性,并弥补原有的TV修补模型的不能满足连通性原则的缺陷。方法定义在图像修补区定义一种"加权全变分,即沿修补区边界法线方向的梯度分量对全变分的贡献,远大于沿切线方向的梯度分量的贡献。结果通过对相同的受损图像,采用原有模型和改进模型作比对实验表明,文中的改进模型可以完全满足图像修补的连通性原则。结论改进的TV模型较原始TV模型更适合于非纹理图像修复。

Aim To propose an improved TV inpainting model. The improved one has favorable marginal property in order to make up the limitation of the TV inpainting model which can not meet the connection principle. Methods A weighted total variation is defined in the inpainting domain, which means the contribution of gradient along the tangent direction of the inpainting domain is siginificantly larger than that of the gradient along the norm direction. Results The experiments which compare the results of adopting the original and improved model to the same damaged Image show that the improved model can meet the connection principle. Conclusion The improved model is more suitable to the non texture image inpainting.