Wheel defect detection method and system based on annular light source

The invention relates to the technical field of wheel detection, image data, electric digital data processing, computer visual and auditory sense and the like, and provides a wheel defect detection method and system based on an annular light source. The annular light source and an industrial camera are arranged, and the industrial camera is controlled to shoot wheels of a vehicle under uniform irradiation of the annular light source; the wheel image comprises a plurality of image features needing visual identification of appearance defects, the plurality of image features comprise a tire brand, a CCC mark of the tire, the color of the hub and the number of spokes, the plurality of image features are extracted from the wheel image, and the extracted image features are subjected to visual identification to obtain a wheel image containing the tire and the hub; and visual identification of appearance defects is carried out on a plurality of extracted image features to find wheel defects on the whole vehicle and e