Reverse drawing method based on metal surface polarization bidirectional reflection distribution function modeling

The invention discloses a reverse drawing method based on metal surface polarization bidirectional reflection distribution function modeling, and the method comprises the steps: obtaining a plurality of target images, carrying out the geometric calibration through a geometric calibration algorithm, obtaining a geometric calibration result, and obtaining a polarization sub-image corresponding to the spatial position adjustment of a to-be-measured metal device, obtaining internal and external parameters, an initial point cloud and a normal line of the imaging device according to calibration and reconstruction of polarization sub-images of multiple visual angles, obtaining model measurement parameter values corresponding to the polarization sub-images, and performing iterative optimization together with the normal line; and after optimization parameter values and surface normals are obtained, rendering calculation is carried out to obtain a reverse drawing image corresponding to the selected visual angle directi