基于Sobel算子预处理的变分水平集曲线演化目标跟踪方法

Target Tracking Method of Variational Level Sets Curve Evolution Based on Sobel Operator Pretreatment

针对变分水平集在曲线演化目标跟踪方法中,直接计算得到的模值图较杂乱,利用Gaussian函数首先对图像进行平滑处理,然后利用中心差分计算梯度,并推导出二者的作用等价于Sobel算子与图像作运算.实例表明该算法使得曲线在演化过程中能够准定位,从而实现目标的正确跟踪.

The gradient mold image is disorderly by direct calculation in target tracking method of variational level sets curve evolution. By discussing using Gaussian function carries on smooth processing to the image and the calculation centered difference approximation, a new pre -process method is given based on Sobel operator. The example indicates that this algorithm can realize goal correct track in the curve evolutionary process of variational level sets.