FIVE-STROKE PHASE 3-D SCANNER Russian patent published in 2019 - IPC G01B11/24 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and can be used for visualization, mathematical modelling and recognition of three-dimensional objects. Disclosed device for remote measurement of three-dimensional objects comprises a projector, which, during three strokes, performs projecting onto the measured object of two types, shifted in phase relative to each other, harmonic sinusoidal light signals (strips) and one constant signal, a recording camera which is offset relative to the projector by a certain value dY and which records these signals and transmits them to a computing device to determine coordinates of the measured surface. Note here that additional displacement of the camera relative to the projector is introduced by a small value of dX, and two additional shooting cycles are introduced to register two additional types of strips generated by the projector, perpendicular to the first two strips. Additional information obtained by shifting the dX camera and by recording additional bands is used by the computer to determine 2Pi intervals in the shift of the main strips when constructing 3d model of the measured object.

EFFECT: wider range of measurements, as well as high accuracy due to reduced width of bands.

1 cl, 4 dwg