Client login verification method, device and equipment based on visual identification

The invention discloses a client login verification method, device and equipment based on visual identification, and the method comprises the steps: extracting a key frame from a decoding video stream in a client login process, and carrying out the color space conversion, and obtaining a target image frame; performing optimization preprocessing operation on the target image frame to obtain an optimized image frame, the optimization preprocessing operation including denoising, edge preserving and image segmentation; a preset CNN model is adopted to carry out element identification and information detection processing on the optimized image frame to obtain login key information, and the login key information comprises key elements, coordinates and sizes; and performing matching verification on the login key information according to a preset matching template based on template matching and feature point matching technologies to obtain a verification result. The technical problem that the actual login verificatio