Visual inspection system and method

A visual inspection method, wherein a visual inspection system comprises a visual inspector, a visual calibrator, and an upper computer, wherein the visual calibrator comprises a calibration structure and a calibration structure mover, the calibration structure mover comprises a movable mounting plate, the mounting plate is able to be located at a calibration position within a movement range of the mounting plate, the calibration position is located within an inspection range of the visual inspector, and the calibration structure is disposed on the mounting plate;

• and
• the visual inspection method comprises:
• obtaining, by the visual inspector, an image of the calibration structure and sending the image of the calibration structure to the upper computer;
• and
• determining, by the upper computer based on the image of the calibration structure, a systematic calibration result of the visual inspector,
• wherein the calibration structure comprises a plurality of size calibration parts with a gradient change in size and a plurality of color card calibration parts with a gradient change in gray value;
• and the visual inspection method further comprises:
• obtaining, by the visual inspector, a first image of the size calibration part and a second image of the color card calibration part and sending the first image and the second image to the upper computer;
• and
• determining, by the upper computer based on the first image and/or the second image, the systematic calibration result of the visual inspector.