利用图像区域的局部梯度信息,同时利用序列图像之间局部区域的全局信息及其相关性重

新构造外部能量函数 并根据内外部能量的比值,动态地调节权值参数. 实验结果表明,改

进算法既可以有效地检测出一些拐角点和凹点,又可以避免目标边缘收敛于某些噪声点

或伪边缘点,可达到良好的体分割效果.-Use of local image gradient information region, while the use of sequential images of the overall situation between the local area information and its relevance to re-structure the external energy function and in accordance with the ratio of internal and external energy, the right to adjust the value of dynamic parameters. Experimental results show that the improved algorithm not only can be effectively detected in a number of corner points and concave point, and prevent the goal of the edge of convergence in certain noise or pseudo-edge point, the body can achieve good segmentation results.