Détection de la sténose de l'artère carotide basée sur l'analyse de mouvement vidéo pour un dépistage rapide
"Video Recording Setup The system consisted of the video equipment with accessories and VMA software. Each patient was asked to lie in the supine position with his/her head placed inside a custom-made box positioned to avoid movements during video recording (Figure 1A). An Apple iPhone 6 64GB (Apple Inc, Cupertino, CA) was mounted through a rectangular cutout on the top side of the box and used to record the video. Two fiber-optic lights were installed inside the box on either side of the iPhone, oriented at an ≈45° angle in opposite directions to create a uniform light source. Each patient was asked to tilt his/her head backwards and lift his/her chin to stretch his/her neck. A 30-second video clip was then recorded at 30 frames per second and pixel resolution of 1920×1080 (Figure 1B). The video file was uploaded to the cloud for processing using Intel Core i7-3930K 6-Core 1-2-GHz desktop processors. A rectangular region of interest (ROI), bounded below the patient’s chin and above the patient’s clothing, was manually boxed for VMA. The pixel numbers inside .The ROI were sorted from top to bottom and then from left to right in ascending order"

