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Image motion compensation method of area array CCD camera

An image movement compensation and camera technology, applied in the field of photogrammetry, can solve the problems of mechanical compensation increasing the design difficulty, low compensation accuracy, complex structure, etc., and achieve the effect of eliminating motion blur, improving signal-to-noise ratio, and improving quality.

Active Publication Date: 2010-01-27
杭州吉瑞邦智能科技有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for image motion compensation of an area array CCD camera, which mainly solves the mechanical compensation existing in the prior art and needs to design a complex electromechanical control system to track the operating state of the aircraft. The limitations of photogrammetry itself make mechanical compensation more difficult to design, complex structure and difficult to control, low compensation accuracy, high cost and other technical problems

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  • Image motion compensation method of area array CCD camera
  • Image motion compensation method of area array CCD camera
  • Image motion compensation method of area array CCD camera

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Embodiment

[0022] Embodiment: a kind of area array CCD camera image motion compensation method of this example, its steps are:

[0023] attached by figure 1 It can be seen that the imaging system includes a lens, a shutter and a CCD device, which are responsible for collecting ground scene information, and a high-speed image readout circuit is responsible for acquiring images. The image is stored in the buffer by using the image buffer memory circuit, and at the same time, the flight status information of the aircraft obtained by the speed-to-height ratio V / H input control part is also stored in the buffer. The movement of the image during exposure is less than one pixel, and each frame is clear. Assuming that the displacement speed of the image on the image plane is V, the shutter exposure time is T, and the pixel size is P, the amount of image movement is S=(V*T) / P. Therefore, in order to ensure the clarity of the image, you can If the times of multiple exposures is set as n=S, the e...

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Abstract

The invention relates to an image motion compensation method of an area array CCD camera, which belongs to the technical field of photography measurement and mainly solves the technical problems of enhanced design difficulty, complex structure, difficult control, low compensation precision, high cost, and the like of mechanical compensation which needs to design a complicated electromechanical control system to trace the running state of a plane due to the limit of own elements of aerial photography measurement in the prior art. The image motion compensation method comprises the following steps: acquiring earth surface scenery information through a high-velocity image reading circuit; continuously collecting images; storing the images into an image buffering storage circuit; obtaining a flight sate parameter during the exposure of the camera from an input control part with velocity-height ratio V / H; processing the obtained information; determining the displacement of each image, and modifying the displacement of each image; aligning the images point by point by an image displacement summation circuit; adding pixels point by point to obtain a final image; and outputting a brilliant image by an image output circuit so as to realize image motion compensation.

Description

technical field [0001] The invention relates to a photogrammetry technology, in particular to an image motion compensation method of an area array CCD camera. Background technique [0002] Aerial photogrammetry (aerial photogrammetry) refers to the operation of continuously taking pictures of the ground with aerial photography instruments on an aircraft, and drawing a topographic map by combining the steps of ground control point measurement, surveying and mapping, and three-dimensional surveying and mapping. [0003] Image motion refers to the phenomenon that the image of the ground scene moves on the image plane during the camera shooting process, and the speed of the motion is usually called the image motion speed. For camera shaking or camera movement, image displacement will occur. The existence of image motion will lead to blurred imaging, which will reduce the resolution of the camera and greatly affect the image quality of the camera. Therefore, for high-resolution...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/02G01C11/06
Inventor 周盛民
Owner 杭州吉瑞邦智能科技有限公司
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