Pilot head pose detection method based on video camera

Abstract

The invention relates to a pilot head pose detection method based on a video camera. A video camera with an upward lens is fixed on an earphone worn on the pilot head; and a marked graph is mounted inside a cockpit above the lens of the video camera, the marked graph is a white sign with a black base, and the sign is made of a fluorescent material. When the method is used for detecting the pose ofthe pilot head, firstly, the pilot puts the head straight and then presses an alignment switch, thereby acquiring a standard identification image through the video camera; then, when the pilot swingsthe head, the video camera shoots the marked graph in real time, the shot marked graph and the stored identification image in the standard state are superposed, and characteristic values are extracted; and the current pose of the pilot head is calculated through the conversion relation between the head position of the pilot and the image position, including the pitch angle, roll angle and courseangle of the head. The method provided by the invention has the advantages that the detection result is high in precision, and the detection speed is high; the method is suitable for head positioningof pilots of small general-purpose planes; and avionics systems of the planes do not need to be changed, so that the cost is low.

Description

technical field [0001] The invention relates to a method for detecting the attitude of the pilot's head, in particular to a method for detecting the attitude of the pilot's head based on a camera. Background technique [0002] With the advancement of science and technology and the improvement of economic level, the market for small aircraft with 2-5 seats is getting bigger and bigger, and there are more and more pilots of general aviation aircraft. Due to cost and cockpit space considerations, small aircraft will not be equipped with avionics systems that enhance situational awareness installed on large passenger aircraft, such as head-up displays. In order to improve the safety of small aircraft take-off and landing, more and more head-mounted situational awareness systems will be applied, such as head-mounted head-up displays. The head-mounted display will display the current aircraft attitude information and the external three-dimensional terrain information rendered acc...

AI Technical Summary

Problems solved by technology

At present, gyroscopes or electromagnetic positioning devices are mainly used to obtain head attitude information; the former is relatively expensive and does not meet the positioning of small aircraft, while the latter requires modification of the cockpit, and radio signals may also interfere with other aircraft avionics The device is running normally

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