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Combined wide angle aviation digital camera system with self-checking self-stabilization function

A digital camera and self-stabilizing technology, which is applied to cameras, camera bodies, camera devices, etc., can solve the problems of inability to realize self-checking and calibration, low system precision, and heavy weight, so as to reduce load, improve system precision, and reduce effect of weight

Inactive Publication Date: 2010-12-29
CHINESE ACAD OF SURVEYING & MAPPING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Unable to realize self-checking and calibration, heavy weight and low system precision

Method used

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  • Combined wide angle aviation digital camera system with self-checking self-stabilization function
  • Combined wide angle aviation digital camera system with self-checking self-stabilization function
  • Combined wide angle aviation digital camera system with self-checking self-stabilization function

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specific Embodiment

[0048] Combination digital camera installation methods, such as figure 2 As shown, the four cameras A, B, C, and D are tilted in pairs, and each camera only makes ω or direction of inclination.

[0049] Such as image 3 As shown, the first camera A and the second camera B are only tilted at an equal relative ω angle. Two cameras A and B are fixedly placed on a frame T with a symmetrical inclined plane. As a result, the main optical axes of the two cameras deviate from the vertical line +ω angle and -ω angle around the x-axis respectively. The angle θ in the figure is half of the field of view angle in the short side direction of the camera, which can make ω image 3 The degree of overlap of 2Δ in the middle.

[0050] image 3 In the middle f is the enlarged display of the main distance of the camera. The image formed by the cameras A and B on the equivalent image plane is: 2l≈2f·tg(θ+ω), and its scale exceeds the single camera scale of 2f.tgθ double.

[0051] Such as ...

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Abstract

The invention discloses a combined wide-angled aerial digital camera system having functions of self checking and self stabilization, wherein, four cameras are arranged in pairs on a stable platform; each pair of cameras are in equivalent and relative tilt, and a combined wide-angled equivalent center projection imaging system is formed and rectified by a self calibration method. The stable platform stabilizes a primary optical axis of the equivalent center projection imaging system to a near-plumb direction by revolving shafts which are vertical to each other and a mechanical damping device;and then the primary optical axis of the equivalent center projection imaging system is further stabilized by an accelerometer, an axial gyroscope, electronic sensors such as a magnetic compass and the like, as well as an attitude angle correcting unit. The camera system of the invention can realize the miniaturization and light weight of the combined wide-angled camera and the stable platform thereof, has high precision and good stability, thus being applied to various unmanned aircrafts, robot helicopters, unmanned airships, small and light manned aircrafts, small and light manned helicopters, and the like.

Description

technical field [0001] The invention relates to a digital camera system, in particular to a combined wide-angle aerial digital camera system with self-checking and self-stabilizing functions. Background technique [0002] Through photoelectric conversion and digital encoding, digital cameras can obtain fast imaging without chemical processing, and directly enter computer image processing, so they have been widely used in the field of life. [0003] In the field of aerial photography, due to the difficulty of manufacturing wide-angle lenses, especially the low (small) distortion camera wide-angle lens required by aerial photography, it is generally used to splice multiple constant-angle cameras into a wide-angle camera to construct a combined aerial camera. A digital camera that realizes the wide angle of a large area scan digital camera. [0004] Such as figure 1 As shown, the principle of the large area array digital camera in the prior art is to use four cameras that are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/02
CPCG01C11/02G03B17/00
Inventor 林宗坚陈天恩孙杰苏国中张珂殊崔红霞刘召芹李永荣尹金宽彭晓东张峰李国胜桂德竹邓冰吴作飞李艺洪志刚孟文利
Owner CHINESE ACAD OF SURVEYING & MAPPING