Customizing time of flight modulation codes to resolve mixed pixels

A Kadambi, R Whyte, A Bhandari, L Streeter, C Barsi, A Dorrington, Ramesh Raskar


We couple custom binary sequences with sparsity based approaches to address the multi-path problem in time of flight imaging. In particular, we utilize maximum length m-sequences that allow us to produce non band-limited correlation functions. Coupled with a tailored sparse deconvolution approach, we are able to resolve the constituent phases and amplitudes of a mixed pixel measurement. Finally, we demonstrate application scenarios, including depth imaging of near-transparent objects.

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