机构地区: 浙江大学计算机科学与技术学院
出 处: 《计算机辅助设计与图形学学报》 2005年第6期1285-1290,共6页
摘 要: 提出一种用于填补提花图像中斑点和折痕区域的修补算法.首先对经典MumfordShah模型进行了改进,增加了对其不连续点集形成中的光滑度约束;然后通过对改进MumfordShah模型的梯度流方程的求解,得到了算法的数值解.梯度流方程包含两个相互耦合的二阶偏微分方程,分别用于灰度函数和不连续点集示性函数的演化.对含噪提花织物图像进行修补的结果证明了该算法的可行性. An effective inpainting algorithm for filling-in of spots and cracks in jacquard images is proposed. It first improves the classical Mumford-Shah model by imposing some explicit smooth constraints on the formation of discontinuities. Then, a numerical solution of the improved Mumford-Shah model is implemented by its gradient descent flow which leads to two coupled second order partial differential equations, one for the gray levels and the other for the signature function of discontinuities. Experiments on noisy jacquard images are presented to illustrate the feasibility of the algorithm.
领 域: [自动化与计算机技术] [自动化与计算机技术]