SAR Image De-speckling Based on Modified Frost Filter
Zhaohui Zhang, Pan Chunhong, Songde Ma · 2005
In this paper, a new filter method is proposed for SAR image de\|speckling. As a modified version of Frost filter structure, the given method combines the statistical information from both the central pixel and other pixels within the filter window, therefore it not only avoids over-smoothing of SAR image structural information caused by Frost (filter’s) iso-weighting operation, but also amends the deficiency of “false edges” by enhanced Frost filter. The experimental results confirm the new filter method can efficiently reduce speckle while preserve useful image formation details.