Distance determination in front of the direction, arrangement with the distance determination in front of the direction, a method and computer program

摘要

Automatic fire alarm may be based on different measurement methods of detecting a fire. In such a way known in the meantime, fire alarm, which by means of temperature measurement, smoke density measurement, etc. a fire detection and can report. By the availability of inexpensive image sensors, it is also known in the meantime, automatic fire detector to operate with video cameras, whereby the fire is detected via a digital image processing.It is a distance determination in front of the direction of 1 with a video camera 2 for the detection of a monitored zone u and for outputting a video sequence is proposed, wherein in the video sequence of the monitored zone u with a rising smoke cloud 5 of a fire 6 is shown, and / or can be displayed, having an evaluation device 3 for the evaluation of the video sequence, wherein the evaluation device 3 a spacer module 10 for determining a distance d of the smoke cloud 5 of the video camera 2 on the basis of a digital image processing certain rate of ascent vof of the smoke cloud 5 in the camera coordinates of the video camera 2 and of a predetermined rate of ascent vo into world coordinates.