Follow-up of Cutaneous Leishmaniasis by Three-Dimensional Reconstruction Based on Photogrammetry: Proof of Concept

Temporal Evaluation of the Surface Area of Treated Skin Ulcers Caused by Cutaneous Leishmaniasis and Relation with Optical Parameters in an Animal Model: A Proof of Concept

“…This platform allowed 360 • rotations to completely visualize the ulcer from the camera lens. The camera was positioned at a 50 mm focal length on a tripod with an inclination angle of 80 • , allowing for better visualization of the area of interest [8].…”

“…This platfor lowed 360° rotations to completely visualize the ulcer from the camera lens. The ca was positioned at a 50 mm focal length on a tripod with an inclination angle of 80°, a ing for better visualization of the area of interest [8]. To record the video, each anesthetized hamster was placed in the middle of the table in the prone position and manually moved until two complete turns were achie The recorded videos included enough information to ensure a successful 3D recons tion (at least 20 frames).…”

“…After obtaining the 3D model, its view was modified until a frontal arrangement of the ulcer was obtained. This was carried out to reduce the parallax error concerning the position of the camera, and from this view build the DEM model (Digital Model of Elevation) (Figure 2d) [8]. This model is a numerical data structure representing the spatial distribution of altitude and describes the morphological distribution of a surface [29].…”

“…This is known as the manual ruler method, which is suggested in medical wound care guidelines and specialized communities [6,7]. Since these are observer-dependent analyses, it is necessary to develop new control strategies that allow these parameters to be obtained more precisely and with a greater degree of effectiveness [8] to facilitate data interpretation of the evolution over time and identify treatment effectiveness.…”