Polarization angle sine stripe three-dimensional measurement method and device based on polarization modulation

The invention provides a polarization angle sine stripe three-dimensional measurement method and device based on polarization modulation. A spatial light modulator is used for generating four fringe patterns with the polarization angle changing in a sinusoidal mode, the phase shift amount is # imgabs0 # in sequence, and a polarization coding fringe set is obtained. And projecting the coded stripe group to a to-be-measured object, and collecting a four-channel stripe image returned by the to-be-measured object. And solving a Stokes vector by using the four-channel fringe image, and further calculating a polarization angle diagram. And performing phase analysis on the polarization angle image in combination with a specific four-step phase shift calculation formula, and obtaining three-dimensional data of the to-be-measured object through phase diagram reconstruction. The polarization angle sine stripe three-dimensional measurement method and the polarization angle sine stripe three-dimensional measurement devic