METHOD OF VIDEOGRAMMETRY SYSTEMS CALIBRATION AND CONTROL DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC G01C11/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of optical non-contact measurements of the shape, position, motion and deformation of objects in space geometric parameters, in particular to near-field digital photogrammetry and videogrammetry, and can be used for precision calibration of videogrammetry systems in scientific research, machine building, construction, medicine, experimental aerodynamics and in other fields. Claimed group of inventions includes a method for videogrammetry systems calibrating and a control device for videogrammetry systems calibrating. At that, method of videogrammetry systems calibration, in which a test object with a set of markers that are clearly distinguishable in the images registered by the camera of the videogrammetry system is installed into the measurement space and which coordinates are previously measured in its own coordinate system with an increased accuracy exceeding the videogrammetry system predicted accuracy, wherein a set of reference points is created in the measurement space, it is functionally coordinated with the measuring coordinate system, the test object is equipped with a complex of response reference points, it is functionally coordinated with its own coordinate system, and when the test object is installed adjusting its position, reducing the basic reference points to the response reference points, according to six degrees of freedom.

EFFECT: technical result consists in increasing the accuracy and reliability of the videogrammetry systems calibration by increasing the test object positioning accuracy by linking its coordinate system to the measuring coordinate system by six degrees of freedom, and consequently, position geometric parameters accuracy and reliability of subsequent non-contact measurements, motion and deformation of models or structural elements of aircraft in wind tunnels and on experimental stands.

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