METHOD OF SELECTING IMAGE OF OBJECT ON NON-HOMOGENEOUS BACKGROUND Russian patent published in 2020 - IPC H04N7/18 

FIELD: physics.

SUBSTANCE: invention relates to the field of applied television, which uses algorithms for selecting an image of an object on a non-homogeneous background, in particular, for the purpose of subsequent determination of its coordinates and autosupporting. Result is achieved by forming compensation signal by smoothing current digital signal in aperture with size m > M_o, but m << M_f, where M_o and M_f are object and background image sizes, respectively, generating a difference signal by subtracting the compensating signal from the current and generating the object binary output by comparing the differential signal with a fixed threshold, wherein in each i^th frame of the video sequence, estimating the size of the binary image of the object M_oi, at 1 < M_oi ≤ m preliminary smoothing of current signal with aperture m_i = M_oi is performed, and when condition m_i= m is achieved, aperture size is fixed.

EFFECT: technical result consists in improvement of accuracy of selection of image of object by increasing signal-to-noise ratio with corresponding increase in dimensions of image of object.

1 cl, 1 dwg