Table 2. Learned sensing classification of P. falciparum infection, thick smear.

		Illumination Type & Classification Score
Data	Value	PC Ring	Off-axis	PC +/-	All	Random	Optim.
Red-only	Average	0.976	0.972	0.910	0.972	0.947	0.982
	Majority	0.977	0.975	0.918	0.974	0.975	0.982
	STD	0.002	0.002	0.013	0.002	0.022	0.001
	Precision	0.988	0.993	0.977	0.984	0.974	0.987
	Recall	0.962	0.950	0.837	0.961	0.917	0.977
Green-only	Average	0.993	0.969	0.918	0.986	0.932	0.995
	Majority	0.994	0.974	0.926	0.988	0.959	0.995
	STD	0.001	0.004	0.008	0.001	0.009	0.001
	Precision	0.998	0.980	0.980	0.995	0.984	0.994
	Recall	0.988	0.958	0.854	0.975	0.878	0.995
Blue-only	Average	0.988	0.975	0.938	0.989	0.970	0.994
	Majority	0.988	0.977	0.943	0.991	0.981	0.996
	STD	0.002	0.003	0.004	0.002	0.007	0.002
	Precision	0.999	0.998	0.990	0.994	0.992	0.999
	Recall	0.976	0.953	0.886	0.984	0.948	0.990
RGB	Average	0.990	0.970	0.941	0.981	0.965	0.990
	Majority	0.991	0.976	0.948	0.983	0.980	0.990
	STD	0.003	0.006	0.008	0.003	0.020	0.001
	Precision	0.998	0.990	0.988	0.994	0.994	0.999
	Recall	0.981	0.950	0.892	0.900	0.936	0.981

"PC Ring" illuminates with a ring of 26 dark-field LEDs for the first image and then 14 central bright-field LEDs for the second image and subtracts the two images for phase contrast. "Off-axis" illuminates with one LED at a small angle with respect to the optical axis. "PC +/-" illuminates with a bright-field LED at an angle for the first image and the LED at equal and opposite angle for the second image before subtracting these two images. "All" sets all LEDs to a uniform brightness. "Random" sets the LEDs’ brightness to random values for the illumination. "Optim." is the learned pattern.