Analysis of the impact of SSIM parameterization for SAR to EO translation networks

Reconstructing 3D data of objects from limited SAR imagery is of interest due to SARs ability to actively sense targets from a far stand-off range. SAR imagery is non-literal and may not capture the same features as a passive EO camera. However, EO imagery has been shown to be a promising candidate for low-view 3D reconstruction. Thus, a common technique for SAR 3D reconstruction is to first translate a SAR image to an EO image. The structural similarity (SSIM) metric has been shown to be an effective loss function in the techniques used to translate SAR to EO. However, SSIM has several components that can be tuned to achieve optimal performance. This work addresses (i) the parameterization of SSIM for the SAR to EO translation problem and (ii) the ability to reconstruct 3D objects from SAR images after said translations. A parametric sweep is conducted to find optimal parameterization on several matched SAR and EO datasets.