SRA: Fast Removal of General Multipath for ToF Sensors [article]

Daniel Freedman, Eyal Krupka, Yoni Smolin, Ido Leichter, Mirko Schmidt
2014 arXiv   pre-print
A major issue with Time of Flight sensors is the presence of multipath interference. We present Sparse Reflections Analysis (SRA), an algorithm for removing this interference which has two main advantages. First, it allows for very general forms of multipath, including interference with three or more paths, diffuse multipath resulting from Lambertian surfaces, and combinations thereof. SRA removes this general multipath with robust techniques based on L_1 optimization. Second, due to a novel
more » ... ension reduction, we are able to produce a very fast version of SRA, which is able to run at frame rate. Experimental results on both synthetic data with ground truth, as well as real images of challenging scenes, validate the approach.
arXiv:1403.5919v1 fatcat:mthvektj5vdldiyb2sgn7jbqwq