DEVICE FOR DETERMINATION OF CHARACTERISTICS OF MATERIALS Russian patent published in 2015 - IPC G06F3/01 G06K9/28 

FIELD: measurement equipment.

SUBSTANCE: method of identification of line-of-sight consists in that two or more image detectors are positioned, and their positions are unknown in proper time, in the space area a reference fragment is placed which is an image or object with the known texture, colour and sizes, so that to make it visible for all image detectors simultaneously, pre-calibration using the named reference fragments is performed, or the named calibration is performed directly during measurements, simultaneously the images are received from all image detectors, for each obtained image the object area is localised with selection on it of local features, on each image the local features related to the reference fragment, a three-dimensional model of mutual position of local features with reference to each other is constructed, and also with reference to the image detectors, an actual spatial position of the object segments is determined using the results of calibration, the assessment of the line-of-sight is performed.

EFFECT: possibility of increase of amount of image detectors at absence of requirements to their mutual position, automatic system calibration in real time mode and improvement of measurement accuracy.

9 cl, 4 dwg