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Smartphone photos can be used to detect anemia
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Smartphone photos can be used to detect anemia

by  Public Library of Science Image capture and region of interest selection. (A) Participant’s left eye in the MATLAB application for selection of conjunctiva region to be used in the analysis. The gray square outlines the selected pixel representing the best conjunctiva color. (B) Region of interest (ROI) of the patient’s palpebral conjunctiva that was selected...