Figure 1.

Comparison of data formats between CV and temporal contrast NV for a rotating black bar stimulus. Left: simulated 30fps recording of a black spinning bar. Every pixel's intensity value is captured at constant time intervals. The location of the bar in each frame can be seen, but the location of the bar between frames must be inferred. Right: Actual recording of a rotating bar captured with a NV sensor. Blue and red points indicate on (increasing intensity) and off (decreasing intensity) events respectively. Each pixel immediately outputs data when it detects a change in intensity. Middle: Superposition of the NV and CV data. The NV sensor captures intensity changes occurring between the CV frames (blue and red data points), but does not recapture redundant background pixel intensities (indicated by transparent frame regions) as is done in the CV format. A video accompanying this figure is available online¹.