Special-shaped filter stick forming paper fitting degree detection method based on machine vision

The invention discloses a special-shaped filter stick forming paper fitting degree detection method based on machine vision, and the main design concept of the method is that the forming paper state of a special-shaped filter stick is detected in combination with a machine vision technology; according to the method, various types of information related to the contour are extracted through the end face image of the filter stick so as to accurately recognize the gap part, not attached to the filter stick tow, of the filter stick forming paper, and then parameter indexes for evaluating the attaching degree from different dimensions are obtained through the geometric information of the outer contour of the filter stick and the geometric information of the inner contour generated in the non-attaching area. Finally, results corresponding to the multi-dimensional indexes are fused, and the quality of the special-shaped filter stick product is judged. The gap detection and index judgment mode provided by the inventio