Calibration module and use method therefor

Abstract

A calibration module and a use method therefor. The calibration module comprises: a plurality of observation planes, wherein among the plurality of observation planes, planes where at least two observation planes are located intersect, and there is a determined spatial position relationship between the plurality of observation planes. Each observation plane is provided with an observation area, and each observation area is provided with a corresponding calibrated BRDF value. By means of providing a polyhedral calibration module, the accuracy of measurement of the attitude of the calibration module and the incident angle of a light source is improved, such that the accuracy of testing of a BRDF characteristic of a surface of an object to be tested is improved.

Dependencies are inferred from the claim text.