Clean the lens and stabilize the phone
A dirty lens or shaky hand can make the image unusable. Brace the phone or dermatoscope and retake blurry captures.
Fill the frame without cutting the lesion
Keep the full lesion and a small rim of surrounding skin visible. Cropping too tightly removes border context.
Avoid glare and shadows
Polarized dermatoscope lighting usually reduces reflection. If glare remains, adjust pressure, angle, or ambient light.
Repeat the same position
For follow-up, use the same body map location, similar distance, and similar lighting so evolution is not confused with capture variation.
Use quality gates
DermaTrack checks brightness, contrast, and sharpness before analysis so low-quality captures can be retaken.