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Aviation total-frame transfer type matrix CCD camera image shift compensation method

A technology of image shift compensation and frame transfer, which is applied to camera devices and other directions, can solve the problems of high cost, low compensation accuracy, complex mechanical compensation structure, etc., and achieve the effects of reducing development cost, simple structure and improving reliability.

Inactive Publication Date: 2007-11-28
BEIJING LUSTER LIGHTTECH
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  • Summary
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  • Description
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Problems solved by technology

Because the movement of the aircraft in the air is not easy to be accurately controlled, the mechanical compensation has always had the disadvantages of complex structure, high cost, and low compensation accuracy.

Method used

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  • Aviation total-frame transfer type matrix CCD camera image shift compensation method
  • Aviation total-frame transfer type matrix CCD camera image shift compensation method
  • Aviation total-frame transfer type matrix CCD camera image shift compensation method

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Embodiment Construction

[0014] The present invention will be further described below with reference to the accompanying drawings and in conjunction with the embodiments.

[0015] Referring to Fig. 1, the imaging unit of the present invention is composed of a lens, a shutter and a CCD chip. Among them, the lens adopts aviation professional lens, which can adapt to harsh environment changes such as flight altitude and vibration shock. The CCD chip adopts a full-frame transfer type large area array CCD chip, which can meet the requirements of large-format and high-resolution aerial photography. The shutter is composed of a mechanical shutter and an electronic shutter. The mechanical shutter can ensure that after a frame of image shooting is completed, the transfer operation will not affect the quality of the frame image. The electronic shutter can provide high-precision exposure control and realize automatic lighting conditions at the same time. adapt. The imaging unit maps the ground scene to the CCD...

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Abstract

The invention discloses an image motion compensation method for aviation full-frame transferring area CCD camera, accomplishing image motion compensation in aviation photography by combining mechanical shutter and electric shutter and the pure-electricity image motion compensation method of changing CCD line frequency driving according to aircraft speed-altitude ratio. Compared with common mechanical compensation technology, studying cost and complicated degree of area aviation camera are decreased greatly. In image motion compensation, flight altitude, exposure jitter and staring model so on are considered fully to strengthen compensation effect. Because compensation circuit adopts multi-phase driving method electric compensation accuracy can achieve sub-pixel level and improve image definition furthermore.

Description

technical field [0001] The invention belongs to the technical field of photogrammetry, and relates to the application of a full-frame transfer type area array CCD camera in aerial photogrammetry, in particular to a compensation method for motion image motion of an aerial full-frame transfer type area array CCD camera. Background technique [0002] One of the main characteristics of aerial photography is that it is required to take images when there is motion between the camera and the scene. For aerial area scan cameras, if the image motion is not compensated, the captured image will be blurred. At present, the image motion compensation of area array camera aerial photography mainly adopts mechanical compensation methods, such as optical compensation using swing mirror, electromechanical compensation using moving image plane within the exposure time, whole camera nodding compensation and so on. This mechanical compensation method requires the design of a complex electromech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/02
Inventor 徐磊谢森朱敏
Owner BEIJING LUSTER LIGHTTECH
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