Sharp focus
Retake blurry images. The lesion border and internal color variation should be visible before analysis.
Full lesion in frame
Include the whole lesion plus a small rim of surrounding skin. Cropping too tightly removes useful border context.
Controlled glare
Use polarized lighting when available and adjust pressure or angle if reflections hide pigment detail.
Repeatable setup
Use the same device, distance, orientation, and lighting for follow-up whenever possible.
Quality before credits
DermaTrack checks brightness, contrast, and sharpness so users can retake weak captures before spending scan credits.