Computer vision digitization of smartphone images of anesthesia paper health records from low-middle income countries

Table 10 Blood pressure detection accuracy

Measure	Deshadowing and homography	Deshadowing only	Homography only	No preprocessing
Accuracy	0.925	0.796	0.931	0.809
Precision	0.941	0.879	0.945	0.889
Recall	0.983	0.894	0.984	0.900
F1	0.961	0.886	0.964	0.894

The effect of preprocessing on blood pressure mark detection. Removing the deshadowing component had little to no effect, but removing the homography caused a drastic drop in all metrics

ISSN: 1471-2105