Fig. 2.

Optimal single-color illumination patterns determined by our network for thin-smear malaria classification (average over 15 trials). (a) Optimized LED arrangement determined using only the red spectral channel exhibits negative (Pattern 1) and positive (Pattern 2) weights that lead to two LED patterns to display on the LED array, recording two images which are then subtracted. Variance over 15 independent runs of the network’s algorithm shows limited fluctuation in the optimized LED pattern. (b-c) Same as (a), but using only the green and blue spectral channels, respectively, for the classification optimization. Dashed line denotes bright-field/dark-field cutoff.