Airborne camera exposure parameter adjustment method and system

A technology of exposure parameters and adjustment methods, applied in the field of unmanned aerial vehicles, can solve problems such as poor image information accuracy, and achieve the effects of improving accuracy, avoiding cloud cover, and accurate automatic exposure.

Active Publication Date: 2021-07-13
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an airborne camera exposure parameter adjustment method and system, which solves the problem of poor accuracy of image information in existing airborne camera exposure parameter adjustment methods

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  • Airborne camera exposure parameter adjustment method and system
  • Airborne camera exposure parameter adjustment method and system

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] The object of the present invention is to provide an airborne camera exposure parameter adjustment method and system, which solves the problem of poor accuracy of image information in the existing airborne camera exposure parameter adjustment method.

[0049] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the acco...

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Abstract

The invention relates to an airborne camera exposure parameter adjustment method and system, and relates to the technical field of unmanned aerial vehicles. The method includes: obtaining the current environmental illuminance value by a photometer; according to the environmental illuminance value, determining the environmental exposure value of the airborne camera by using the environmental correspondence between the environmental illuminance value and the environmental exposure value of the airborne camera; according to the environmental exposure value, Determine the internal exposure value of the airborne camera by using the preset corresponding relationship between the environmental exposure value and the internal exposure value of the airborne camera; determine the internal exposure value of the airborne camera by using the corresponding relationship between the internal exposure value and the exposure parameters of the airborne camera The value of the exposure parameter; adjust the current exposure parameter of the airborne camera according to the value of the exposure parameter. The invention measures the environmental illuminance in real time according to the flying environment of the UAV, and adaptively determines the exposure parameters of the airborne camera through the correlation between the environmental illuminance and the exposure parameters of the airborne camera, thereby improving the accuracy of photos or spectral image information obtained by the airborne camera. accuracy.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a method and system for adjusting exposure parameters of an airborne camera. Background technique [0002] UAV airborne cameras or spectrometers have become more and more common. Generally, the exposure parameters of the camera or spectrometer are adjusted on the ground before airborne flight. If the fixed exposure parameters (such as sensitivity, aperture, and shutter speed) are set directly on the ground according to the current brightness, when cloud cover occurs during the flight, the brightness of the photo or picture will change greatly, which will seriously affect the acquisition. Therefore, it is difficult to obtain accurate image or spectral reflectance information; if the automatic exposure is set on the ground, due to the interference of different factors on the ground (such as the water surface, the reflection of buildings on the ground), the photos o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235
CPCH04N23/71H04N23/73G03B15/006G03B7/097
Inventor 何勇何立文郑力源楚秉泉
Owner ZHEJIANG UNIV
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