Small target detection instrument based on Fourier optics and detection method thereof

A target detection and detection method technology, applied in photogrammetry/video metrology, instruments, measuring devices, etc., can solve the problems of slow transformation, background change speed limit, poor ability to extract tiny targets, etc., and achieve anti-noise interference High reliability, low cost, avoiding the effect of complexity
CN101694385AInactive Publication Date: 2010-04-14HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2010-04-14
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a small target detection instrument based on Fourier optics and a detection method thereof. The detection instrument comprises an image acquisition preprocessing module, an image matching module and a small target detection and output module. The detection method utilizes a CCD camera to obtain a small-eye image, the small-eye image is outputted to a FPGA chip after being preprocessed by a programmable video signal processor to sequentially complete evaluation and splicing processing of matching parameters and nonlinear compression processing of bionic vision so as to obtain a compressed image, and the compressed image outputs a small target image after performing small target existence analysis and identification extraction processing by utilizing a DSP chip. The small target detection instrument is low in cost, low in calculation complexity and simple and flexible in principle, is not limited by movement speed of targets, can detect existence of small targets which are static in a scene or have identical movement speed with the scene, is strong in noise interference, and has certain robustness to complex backgrounds.
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Description

technical field

[0001] The invention relates to a small target detector and a detection method based on Fourier optics, belonging to the field of image signal acquisition and processing. Background technique

[0002] In applications such as video object tracking and industrial product inspection, it is often necessary to track and identify moving objects. When the target is far away from the imaging system, the image of the target only occupies a single or a few pixels in the scene image, and the morphological characteristics of such a small-sized target are similar to a point target. Because the imaging process is often affected by noise and external environmental interference, the tiny target is close to the random noise in the image, which increases the difficulty of identification and extraction.

[0003] At present, in the method of extracting and identifying tiny targets, a camera with high spatial resolution is firstly used on the imaging sensor to reduce interferenc...

Claims

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