EXPOSURE SURFACE CALIBRATION METHOD AND APPARATUS FOR OPTICAL SYSTEM, CALIBRATION MEASUREMENT METHOD AND APPARATUS, COMPUTER DEVICE, AND STORAGE MEDIUM

Disclosed in the disclosure are a method and apparatus for calibrating an exposure surface of an optical system, and a computer device and a storage medium. The method includes: performing flat-field correction on a photographing module by using a reference light source; acquiring a grayscale distribution image generated by photographing an exposure surface of an optical system by the photographing module; segmenting the grayscale distribution image into a mesh image including a plurality of segmented regions, and calculating a fitting grayscale value of each segmented region; selecting, as a reference grayscale value, a minimum fitting grayscale value from all the fitting grayscale values obtained through calculation, and calculating, according to the reference grayscale value, grayscale compensation coefficients corresponding to the other segmented regions, so as to generate a digital mask; and performing mask compensation, by using the digital mask, on a light projection image projected by the optical system, so as to obtain a printed image of which the exposure surface has a uniform irradiance value. In the disclosure, by acquiring the pixel-level distribution of an exposure surface, and performing corresponding compensation on a grayscale value, the calibration accuracy and calibration efficiency of the exposure surface of an optical system may be improved. Further disclosed in the disclosure further is a calibration measurement method for 3D printing. According to the calibration measurement method for 3D printing, by measuring a plurality of parameters of the optical system, it may be determined that the parameters of the optical system meet requirements during 3D printing, such that a clear image that is completely similar to an object can be generated, thereby realizing more accurate and efficient 3D printing.