Due to random interference of electromagnetic waves in imaging procedure, SAR images are corrupted by speckle noise
which limits the performance of the road extraction algorithm in spatial domain. In this paper, we aimed at the reduction
of speckle noise through analytic approaches. To this end, Total Variation (TV) minimization is used to produce
despeckled images that are almost photographic in appearance from original SAR images. Then, a semi-automatic road
extraction technique based on fast marching algorithm provided in our previous work is applied to the despeckled SAR
images. Experiment results for TerraSAR-X data demonstrates that TV minimization could effectively eliminate the
false connectivity of extracted road network, which is caused by speckle noise.
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