The edge inspection optimization algorithm of double drum bolt can be applied to the detection of top specification of standard part head and defects of wheel Gallery, and the actual inspection effect can be observed according to the specific inspection image.

Using the method of size detection, we can also test the defects of the wheel Gallery, and the basic principle is the same as that of the size detection. The specific methods are as follows: define a projected rectangular frame, so that it takes the positioning point on the top of the standard part head as the management center to carry out the dimensional inspection. After that, the projected rectangular frame will be rotated on the circle where the fixed positioning point is fixed, and then the size inspection is carried out. The angle of view for each rotation of waterproof lantern rivet is determined according to the required precision of ultrasonic inspection for the wheel gallery. The precision of bolts is required to be high, and the angle of view for each rotation must be relatively small.

In the initial input image, a projection rectangle is defined to obtain the projection image, and then the filter and edge definition are carried out. The two straight lines of automobile stainless steel rivets indicate the detected edge, and the difference of the clarity of the two lines is the pixel size. According to the calibration, the specific specifications are obtained, and the precise measurement of bolt specifications is completed. For the input image with black shadow inside the fast bolt edge corridor, the specificity of gray value transformation at the edge must be used to identify the edge contour and eliminate the influence.