The background to this research is that frequent medical screening of the general population for melanoma is not feasible. The real challenge of this project is to develop an automatic process for detecting any potential melanoma. To this end, the project aims to design an algorithm to build a novel diagnostic aid that makes use of the similarity and disparity of pigmented lesions in the same patient. To achieve this, we need to obtain and structure a large database of images grouping all pigmented lesions per patient according to their similarities as perceived by dermatologists.

Inclusion Criteria:

• Male or female aged 18 and over
• Patient with more than 15 nevi (moles) of various phototypes (I to III)
• Patient who has received information about the study and has not expressed any opposition
• Patient who is a beneficiary or entitled person under a social security scheme

Exclusion Criteria:

• Patients with phototype V
• Patients with chronic inflammatory skin diseases
• Claustrophobic patients
• Patients who are bedridden or handicapped
• Patients who are excluded from another research protocol at the time of collection of the non-objection.
• Patients covered by articles L1121-5 to 1121-8 of the French Public Health Code (minors, adults under guardianship or trusteeship, patients deprived of their liberty, pregnant or breast-feeding women),
• Any other reason which, in the investigator's opinion, could interfere with the evaluation of the research objectives.