A Method of Long-line Infrared Electronic Image Stabilization Based on Inertial Navigation Information
An electronic image stabilization and infrared image technology, applied in television, electrical components, image communication, etc., can solve the problems of large size, high cost, complex structure, etc., and achieve the effect of simple operation, simple additional equipment, and avoiding complicated calculation process
Active Publication Date: 2019-04-02
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Both mechanical image stabilization and optical image stabilization must use some special equipment, such as mechanical gyroscopes, servo systems, optical components, etc., which have the characteristics of complex structure, high cost, and large volume, which are limited in many applications
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[0039] The specific implementation manners of the present invention will be further described in detail below according to the accompanying drawings.
[0040] Perform image stabilization on the nth frame and the n+1th frame of the long-line infrared image in turn, figure 1 It is the flow chart of the concrete implementation method of the present invention, and n=42 in the embodiment of the present invention, comprises the following steps:
[0041](1) Obtain the pixel value of each frame of long-line infrared image, the azimuth and elevation angle in the carrier coordinate system obtained by the photoelectric code disc, and the real-time attitude angle information collected by the inertial navigation equipment. The original infrared image is a 16-bit gray degree image, the establishment of carrier coordinate system and geographic coordinate system is as follows: figure 2 As shown, the data variation law of the yaw angle, pitch angle and roll angle in the 42nd frame and the 43...
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The invention discloses a method for stabilizing long-line infrared electronic images based on inertial navigation information. The method includes the following steps: acquiring the pixel value of each frame of long-line infrared images, and obtaining the azimuth and elevation in the carrier coordinate system obtained from a photoelectric code disc. Angle, real-time attitude angle information; convert the azimuth and elevation angle of each pixel in the original infrared image in the carrier coordinate system to the azimuth and elevation angle in the geographic coordinate system, and use the angle linear interpolation strategy to quickly solve; determine the target The range of azimuth and elevation angles under the infrared image; establish the coordinate mapping relationship between the original infrared image and the target infrared image; use the adjacent interpolation method to perform preliminary restoration of the image; take the position of the missing pixel in the target infrared image as the center, and use the local The pixel median value in the window replaces the pixel value of the point to realize further restoration of the image and complete image stabilization. The invention has the advantages of not needing complicated hardware, improving image stabilization precision, simple operation, convenient and fast.
Description
Technical field: [0001] The invention relates to the technical field of digital image processing, in particular to a digital video electronic image stabilization method, in particular to a long-line infrared electronic image stabilization method based on inertial navigation information. Background technique: [0002] Infrared imaging is widely used because of its good night vision performance, strong anti-interference and passive detection. An important feature of the long-line infrared detection system is that a frame of image has a large amount of data, which can provide a panoramic image with higher resolution and a larger field of view in the pitch direction. Infrared imaging devices have been increasingly used on moving platforms, such as ship-borne or vehicle-mounted platforms. Due to the ups and downs of the sea or the bumps of the road, the collected video images shake. Image shaking will cause fatigue to the observer, leading to misjudgment and missed judgment. How...
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IPC IPC(8): H04N5/232H04N5/33
CPCH04N5/33H04N23/682
Inventor 尹丽华刘士建李范鸣崔坤
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI