Desktop module appearance AVI inspection is mainly used for defect detection of 3C product appearance, improving production line yield and the process control capability of manufacturers. Mainly detecting scratches, damages, pressure marks, broken edges, gaps, hidden cracks, burrs, warping, foreign objects, dirt, white spots, bubbles, pinholes, bumps and depressions, as well as component errors, leaks, reversals, excess, skewers, offsets, color differences, sizes, segments, etc.