An SNR analysis of structured light techniques in the presence of strong ambient illumination
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چکیده
In this technical report, we provide an analysis on the image formulation of structured light based techniques in the presence of strong ambient illumination. In Section 1, we derive an analytical expression for the signal-noise-ratio (SNR) of structured light coding schemes. We show that the SNR is proportional to the power ratio between structured light signal and ambient illumination. In Section 2, we formulate the theoretical relation between depth accuracy and SNR. Based on this relation, the concept of decodability condition is present for general coding schemes. In Section 3, we derive a theoretical lower bound on acquisition time for different structured light coding schemes.
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