Adaptive camera exposure time adjustment device and method

Abstract

The invention discloses an adaptive camera exposure time adjustment device and a method. the method comprises steps: an exposure time grade sequence value and a unit time are preset; detection and data processing are carried out on an image photographed by the camera via an optical flow detection and processing system, and an exposure time grade which needs to be adjusted higher, an exposure time grade which needs to be adjusted lower and an exposure time which needs to be kept unchanged are judged and obtained; the optical flow detection and processing system sends an instruction for adjusting the exposure time grade higher or adjusting the exposure time grade lower, and an adjustment control module receives the instruction and adjusts the exposure time of the camera according to the instruction. According to the scheme of the invention, during a process during which the camera moves at a high speed along with an unmanned aerial vehicle, the exposure time of the camera can be adjusted adaptively in real time, and the number and the quality of the photographed images can be ensured.

Description

technical field [0001] The invention relates to the technical field of exposure adjustment of an unmanned aerial vehicle image capture device, in particular to a device and method for adaptively adjusting camera exposure time. Background technique [0002] With the development of science and technology, unmanned aerial vehicles have begun to enter people's field of vision, gradually penetrate into people's lives, and improve people's lives. The application range of unmanned aerial vehicle is more and more extensive, for example, it has a wide range of applications in professional fields such as aerial photography, surveying, disaster control and real-time monitoring. [0003] At the same time, higher requirements are put forward for the number and quality of images captured by the aircraft during high-speed flight, especially for the accuracy of optical flow measurement, which is closely related to the number of exposures per unit time and the single exposure time of the cam...

AI Technical Summary

Problems solved by technology

During the high-speed flight of the aircraft, the camera moves very fast and cannot be adjusted manually. Moreover, during the high-speed movement, as the speed changes, the exposure time needs to be changed in real time and adaptively, otherwise it cannot be realized. The purpose of capturing images with an ideal level of quantity and quality

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