Row based weak target detection method in infra-red ray row detector image-forming

A technology of weak and small targets and detection methods, applied in the field of image processing, can solve the problems of waste of processing time, inability to handle small target detection well, and consume a lot of calculations, and achieve the effect of improving efficiency

Inactive Publication Date: 2008-08-13
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, using this method will cause the following problems: 1. Each frame field image obtained by the detector element scan must be reconstructed, and the reconstruction needs to use a relatively complex algorithm, which consumes a considerable amount of calculation; 2. Due to Due to the non-uniformity of the infrared detector, the quality of the reconstructed image cannot be guaranteed, and it is necessary to use a non-uniformity correction algorithm to correct the image; 3. If there is no target in

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  • Row based weak target detection method in infra-red ray row detector image-forming
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  • Row based weak target detection method in infra-red ray row detector image-forming

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[0019] specific implementation

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0021] The embodiment of the present invention is realized by C language, and a line scan image with a size of 128×154 is tested on a Pentium IV personal computer with an Intel CPU 1.8GHz and a memory of 512MB. The line array image is obtained by a 128-pixel mid-wave infrared array detector and a conical scan with a fixed radius. The implementation process is as follows:

[0022] 1. Target detection using matched filters

[0023] Since the gray level of the target signal is approximately Gaussian distributed, the function is selecte...

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Abstract

The present invention relates to a detecting method for small target based on column of infrared line detector in image processing technology field. The target is detected by using method of signal processing and mode identifying according with small target character in each single column scanned formed by each detector. The method needs not to detect target after reconstructing frame image for scanned field image, so detecting speed is increased, and image uneven influence is removed, and can response early. The target detection is processed for single column by using matching filtering, wavelet transformation and FKT arithmetic, and the detecting result is combined for constructing guide head signal process unit with rapid-speed and steadiness characters. The method can great increase target detecting efficiency using infrared column scanner by taking full advantage of scanned image character.

Description

technical field [0001] The invention relates to a detection method in the technical field of image processing, in particular to a column-based weak and small target detection method in infrared column detector imaging. Background technique [0002] Infrared imaging guidance is one of the important methods to realize precise guidance technology. In order to detect enemy aircraft, missiles and other targets as early as possible, the infrared imaging guidance system must capture the target as far away as possible. Weak and small targets are detected accurately. At present, there are two main forms of infrared imaging guidance technology, one is image scanning guidance using a combination of detectors and rotating optical-mechanical scanners, and the other is infrared focal plane imaging guidance. Because the cost of the former is low, it is easy to miniaturize, and the technology is relatively mature, so it still has a certain application range at present. [0003] The infra...

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Application Information

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IPC IPC(8): G06T7/00G06T5/00G06K9/62G01J5/00
Inventor 杨杰曹原
Owner SHANGHAI JIAO TONG UNIV
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