Fruit outer contour deformity detection method

The invention discloses a fruit outer contour deformity detection method which comprises the following steps: S1, collecting a color image of a fruit outer contour, and converting the color image intoa gray level image; S2, carrying out image segmentation processing on the gray level image; S3, clockwise acquiring pixel point coordinates of a fruit boundary by adopting a pixel tracking method onthe fruit boundary; S4, removing a fruit body part of the fruit in the gray level image, keeping a fruit stem part, and keeping a boundary region of a fruit stem by adopting a canny algorithm and a maximum connected domain keeping algorithm; and S5, intersecting the fruit stem with the edge of the fruit body to extract the coordinates of the fruit base, taking the fruit base as a reference point,performing Euclidean distance clockwise with the pixel point coordinates of the boundary of the fruit body, drawing the Euclidean distance into an oscillogram, and distinguishing the deformity degreeof the fruit body according