Symbol N_pixels

The passage around this formula

…dependency from a frame sensor’s fixed-rate readout: $R_{\mathrm{frame}} = N_{\mathrm{pixels}} \cdot f_{\mathrm{frame}} \cdot b, \qquad R_{\mathrm{event}}(t) \approx N_{\mathrm{active}}(t) \cdot b_{\mathrm{event}}$. where $N_{\mathrm{active}}(t)$ , the number of pixels crossing threshold at a given instant, is normally far smaller than the total pixel count $N_{\mathrm{pixels}}$ for a mostly-static scene. That scene-dependence is also the sensor’s clearest limitation rather than a free efficiency gain: because each pixel’s operating principle is defined by Gallego and colleagues as asynchronously measuring per-pixel brightness change and encoding “the…

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