River surface river water flow velocity measurement method based on machine vision

• Main Authors: LIU XIYUAN, GAN LIBO, YU WENGONG, LIN FENG
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses a method for measuring the flow velocity of river water on the surface of a river channel based on machine vision, and the method comprises the following steps: 1, obtaining multiple frames of images of the water surface of the river channel, and each frame of image comprises a marker; 2, determining the geometric dimension of the marker in each frame of image obtained in the step 1, and calculating the reference distance of the floating object according to the geometric dimension of the marker; step 3, respectively detecting and identifying each floating object from each frame of image by adopting the trained target detection network, and further determining the coordinate of each floating object in each frame of image; step 4, calculating the average flow velocity of all floaters in the current frame image; 5, according to the average flowing speed of all the floating objects in the current frame image, the water flow speed of the current frame image is obtained through calculation.