基于随机性检测的数字稳像算法评价方法

Measurement method for digital image stabilization based on randomness test

提出了一种基于随机性检测的数字稳像算法客观评价方法。该方法首先估计出数字稳像算法输出视频的全局运动向量;然后将估计结果编码为二进制序列;最后利用随机性检测的方法来检验此二进制序列的随机性,并且根据序列随机性的强弱程度来衡量数字稳像算法的效果。最后的实验表明,提出的方法能够准确地评价常用的数字稳像算法。

This paper proposed a measurement method for digital image stabilization based on randomness test.Firstly,estimated the global motion vectors of the video stabilized by a digital image stabilization method.Then converted the global motion vectors into a series of binary sequence.Finally,utilized pseudorandom test to measure the randomness of the binary sequence and measured the stability of the stabilized video by using the randomness of the binary sequence.The experiment shows that the proposed method can measure the digital image stabilization methods exactly.