The Interdisciplinary Center, Herzliya.
University of Haifa, Haifa.
IEEE Trans Pattern Anal Mach Intell. 2014 Feb;36(2):317-30. doi: 10.1109/TPAMI.2013.138.
A fast pattern matching scheme termed matching by tone mapping (MTM) is introduced which allows matching under nonlinear tone mappings. We show that, when tone mapping is approximated by a piecewise constant/linear function, a fast computational scheme is possible requiring computational time similar to the fast implementation of normalized cross correlation (NCC). In fact, the MTM measure can be viewed as a generalization of the NCC for nonlinear mappings and actually reduces to NCC when mappings are restricted to be linear. We empirically show that the MTM is highly discriminative and robust to noise with comparable performance capability to that of the well performing mutual information, but on par with NCC in terms of computation time.
引入了一种称为色调映射匹配（MTM）的快速模式匹配方案，该方案允许在非线性色调映射下进行匹配。我们表明，当色调映射由分段常数/线性函数近似时，可以使用类似于归一化互相关（NCC）快速实现的快速计算方案。实际上，MTM 度量可以看作是非线性映射的 NCC 的推广，并且实际上在映射限制为线性时简化为 NCC。我们通过实验证明，MTM 具有高度的判别力和对噪声的鲁棒性，与表现良好的互信息的性能相当，但在计算时间方面与 NCC 相当。
