改进Closed_Form Solution方法进行前景物体运动模糊抠图

Improved Closed_Form Solution method for foreground object motion blurred image matting

针对Closed_Form Solution图像抠图方法在进行前景物体运动模糊抠图时容易受到复杂背景影响而产生抠图不精确问题,提出一种结合运动模糊物体局部梯度统计特征以及透明度连续性特点的抠图方法。该方法在原来Closed_Form Solution方法中加入一项含有权重的透明度值之差的约束平滑项,通过相邻像素运动梯度统计特征和透明度差值约束改善传统方法抠图不精确问题。仿真实验和真实运动模糊抠图实验结果表明,改进算法相对传统Closed_Form Solution方法能够更有效地提取出前景物体运动模糊区域,抠图结果更为平滑。

Closed_Form Solution to matting the foreground motion blurred object usually can＇t get motion region exactly when background is complex. This paper presented an improved algorithm which combined the local image grads statistics of motion blurred object with the continuity of transparency ct. The algorithm added a smooth constraint term on the original to get exact region, and constructed this constraint term by the difference of the local transparency value on each pixel. Simulation experi- ment and real motion image experiment show that the matting quality is improved and the matting result is smoothness.