METHOD FOR OBTAINING A THREE-DIMENSIONAL SPATIAL DISTRIBUTION OF SURFACE DEFORMATIONS OF HARD-TO-REACH OBJECTS Russian patent published in 2022 - IPC G02B27/00 G01B11/16 

FIELD: testing technology.

SUBSTANCE: invention relates to non-destructive testing technologies, namely measuring endoscopy, and can be used to obtain and analyze the three-dimensional spatial distribution of deformations of the surface of hard-to-reach objects. The claimed method for obtaining a three-dimensional spatial distribution of deformations of the surface of hard-to-reach objects consists in illuminating the surface under study with radiation propagating from the distal end of the endoscopic probe, forming a sequence of images from reflected and scattered radiation by the surface under study at specified times on a matrix receiver. Before conducting a surface study, a preliminary geometric calibration of the stereoscopic optical system is carried out, an endoscopic probe with a built-in stereoscopic optical system located at its distal end is used, with the help of which pairs of images of the surface under study obtained from various angles are formed and sequentially recorded, a three-dimensional image of the surface at a given time is calculated based on the joint processing of pairs of images, and, by processing a sequence of such pairs of images using data from the preliminary geometric calibration of a stereoscopic optical system, the three-dimensional spatial distribution of deformations of the surface under study is measured and analyzed.

EFFECT: ability to identify the distribution of deformations of the surface of a hard-to-reach object of complex shape.

1 cl, 1 dwg