Characterization of dim light response in DVS pixel: Discontinuity of event triggering time
arxiv(2024)
摘要
Dynamic Vision Sensors (DVS) have recently generated great interest because
of the advantages of wide dynamic range and low latency compared with
conventional frame-based cameras. However, the complicated behaviors in dim
light conditions are still not clear, restricting the applications of DVS. In
this paper, we analyze the typical DVS circuit, and find that there exists
discontinuity of event triggering time. In dim light conditions, the
discontinuity becomes prominent. We point out that the discontinuity depends
exclusively on the changing speed of light intensity. Experimental results on
real event data validate the analysis and the existence of discontinuity that
reveals the non-first-order behaviors of DVS in dim light conditions.
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