METHOD OF THE NATURAL FIRES RECOGNITION IN SUB-HORIZON AREAS Russian patent published in 2018 - IPC G08B17/107 

FIELD: surveillance systems.

SUBSTANCE: invention relates to the field of video surveillance, mainly of open spaces, with fire hazard control, and specifically to the methods of natural fires recognition in sub-horizon areas. In the claimed method of natural fires recognition in sub-horizon areas, installing a rotating around a vertical axis video camera on a high-rise structure, making a territory filming by the camera sequential rotation around the vertical axis, performing analysis of the obtained images for the presence of objects in the sub-horizon areas of the frame, similar by the color to smoke, if any, fixing the possibility of a natural fire. According to the elevation heights maps database determining the calculated horizon line in each frame, making a correction for the visible in the frame real horizon line, analyzing only that area of the frame, which is located near the horizon line, building isolines in the analyzed area, enveloping the combined into segments by color, brightness and contrast image pixels. In the presence of the isoline section deviation from the equal distance from the horizon line, fixing the possibility of a natural fire in the place corresponding to the indicated one, and in the presence of the isoline repeating the shape of the horizon, recording the absence of a natural fire in the sub-horizon area.

EFFECT: possibility of a natural fire recognition in the sub-horizon area without the video camera zooming.

4 cl, 4 dwg