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An image motion compensation method based on an image motion compensation structure based on real-time visual axis tracking

A technology of image motion compensation and boresight, applied in the field of image motion compensation, can solve the problems of unfavorable imaging system with high frame rate, increase system cost and mechanical mechanism, and cannot correct the change of aircraft attitude, so as to reduce the difficulty of control and improve the attitude of the aircraft. Compensation, the effect of shift compensation

Active Publication Date: 2017-11-21
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, due to the need for repeated "start-stop" control of the scanning mechanism, the state transition process takes a long time to stabilize the mechanism, which is not conducive to high frame rate imaging of the imaging system
[0007] In addition, the above-mentioned compensation method cannot correct the aircraft attitude change, and an additional stable platform is required, which increases the system cost and mechanical mechanism

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  • An image motion compensation method based on an image motion compensation structure based on real-time visual axis tracking
  • An image motion compensation method based on an image motion compensation structure based on real-time visual axis tracking
  • An image motion compensation method based on an image motion compensation structure based on real-time visual axis tracking

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[0029] Combine below figure 2 , image 3 A better example of the present invention is given, which is mainly described in further detail, but not used to limit the scope of the present invention:

[0030] When the present invention is applied to an airborne infrared area array imager, it is required to realize 55° wide field of view imaging in the direction of the wingspan. Choose a flat glass mirror to design a compensation mirror whose rotation axis is in the same direction as the scanning axis, and a compensation mechanism composed of a motor and an angle sensor is installed on the rotation axis. The scanning mechanism 3 is designed according to the size of the infrared area scan camera 1 and the compensation mechanism 2, including a scanning installation frame, a scanning motor, a scanning axis and an angle sensor. Fix the infrared area scan camera 1 and the compensation mechanism 2 on the scanning installation frame. The scanning shaft and the scanning motor of the sc...

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Abstract

The invention discloses an IMC method of an IMC structure based on real-time visual axis tracking. The IMC structure comprises an infrared array camera, a scanning mechanism, a compensating mirror structure and an attitude measuring instrument. The method is based on real-time visual axis tracking and uses the classic PID 3-loop control algorithm in the control field to realize IMC of high frame frequency and high precision in the wingspan direction, the compensation precision is higher than 1 / 2 pixel, attitude of the imaging system in the airplane rolling direction is stable, and imaging of large visual imaging and high resolution is realized. The method has the advantages that the small infrared array camera can be used to realize imaging of large visual field.

Description

technical field [0001] The invention relates to an image motion compensation method, in particular to an image motion compensation method based on a real-time visual axis tracking image motion compensation structure. Background technique [0002] Today, with the rapid development of CCD methods, relying on billion-dollar detectors can realize airborne large-field-of-view high-resolution visible light remote sensing imaging. However, domestic mid- and long-wave infrared detectors still remain at the 100,000-yuan level. Under the premise of high ground resolution requirements, it is difficult to rely on fixed infrared imaging systems to achieve large field of view (over 30°) imaging. [0003] In order to meet the high-resolution and large-field airborne remote sensing imaging, it is necessary to scan the infrared imaging system in the direction of the wingspan, and use multiple imaging in time to form a high-resolution wide-format imaging in space. The single-frame imaging pr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10
Inventor 韩贵丞舒嵘王义坤亓洪兴周潘伟刘敏姚波
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI