关键词: 机器视觉, 图像处理, 角点检测, 像素遍历, 体尺测量

Abstract: At present, the method of horse body measurement refers to the direct contact measurement, which not only consumes lots of manpower and financial resources, but also has the complicated operational steps. In this thesis, the methods of measuring the horse body size are summarized, the methods of herding body size measurement in recent years are reviewed, the main contents of horse body size measurement method are elaborated, and the horse body measurement method is prospected. The paper conducts graying, denoising, thresholding cutting and profile extraction for figures of 10 female horses with different ages, then conducts the image corner detection, and identifies all nodes on the margin of outline, and then uses the pixel traversal to identify the key points of the horse body, including scapula point, forefoot point, sternum front edge point, haunch point and highest haunch point. At the same time, Helon-Qin Jiushao’s formula and geometrical relationship method are used to calculate height and length of the horse body. Such a method is used to measure the average relative error of the horse body length as 3.97% and average relative error of the horse body height as 4.45%. This method provides a scientific research basis for scholars to study the horse body size.

Key words: machine vision, image processing, corner detection, pixel traversal, body measurement