Belle Quantified Dimensions: Precise and Automatic Quantification of Skin Lesion from Dermoscope Calibration Scale

Lesion's diameter is one of the four most important features of a mole. When a lesion exceeds 6 millimeters in diameter, it raises a clinical warning. Most modern dermoscopes are equipped with integrated scales, enabling physicians to accurately estimate the lesion's size. An accurate size measurement is critical for diagnosing and tracking the growth of skin abnormalities, such as moles or melanoma. In this work, we propose the BQD system automatically capable of measuring a lesion's dimensions and area using the integrated scale from the dermoscope. We evaluate the system with a test set of 434 images with various types of rulers. The results illustrate the efficacy of the BQD system in accurately measuring and assessing various types of skin lesions, highlighting its potential as a reliable tool in dermatological diagnostics.