METHOD AND DEVICE FOR MEASURING THREE-DIMENSIONAL COORDINATES OF OBJECT'S SURFACE Russian patent published in 2024 - IPC G01B11/25 G06T7/521 

FIELD: laser scanning.

SUBSTANCE: methods and measuring devices for reconstructing depth based on the projection of structured light by projecting laser stripes onto the surface of an object. The method consists of scanning the surface of an object with a flat beam of laser radiation and forming a sequence of illumination patterns in the form of a set of stripes, so that each stripe has a unique code; registering a sequence of frames of images of the object surface; restoring a unique stripe code for each image pixel, calculating the coordinates of object surface points by solving a system of equations that specify the directions of flat laser beams and main rays passing through the centers of the stripe image pixels. In this case, pulse modulation of the laser radiation is carried out in such a way that the spatial position of the stripes is determined by the De Bruijn sequence.

EFFECT: increase in the range and spatial resolution of the system, a reduction in measurement time, and an expansion of application areas.

3 cl, 5 dwg