Visual detection method and device for the relative height of aircraft and cloud layer

The invention provides a visual detection method and device for the relative height of an aircraft and a cloud layer. The method comprises: acquiring an image shot by an imaging system on an aircraftservo frame; detecting an upper boundary and a lower boundary of a cloud layer in the image by utilizing a cloud layer image detection algorithm; determining a horizontal position line in the image according to the pitch angle of the attitude of the aircraft and the pitch angle of a servo frame; and determining the relative height of the aircraft and the cloud layer according to the horizontal position line and the position relationship between the upper boundary and the lower boundary of the cloud layer. According to the visual detection method and device for the relative height of the aircraft and the cloud layer, the relative height of the aircraft and the cloud layer can be detected through the built-in optical imaging system and the built-in servo frame, and a detection basis is provided for the aircraft to a