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Visible-light polarization image fusion method based on non-subsampled shearlets

A polarization image, non-subsampling technology, used in image enhancement, image data processing, instruments, etc., can solve the limited application of infrared detection technology, it is difficult to effectively detect small temperature difference targets and camouflaged targets, and the distinction between targets and background radiation is reduced. It is suitable for polarization image fusion and target recognition, improving target detection rate, and increasing target enhancement processing.

Inactive Publication Date: 2015-12-09
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

With the development of infrared camouflage technology, new infrared camouflage materials reduce the radiation discrimination between the target and the background, making it difficult for infrared cameras to effectively detect small temperature difference targets and camouflage targets, and the application of infrared detection technology is limited.

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  • Visible-light polarization image fusion method based on non-subsampled shearlets
  • Visible-light polarization image fusion method based on non-subsampled shearlets
  • Visible-light polarization image fusion method based on non-subsampled shearlets

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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is carried out on the premise of the technical solution of the present invention, and the detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0038] Such as figure 1 As shown, the algorithm flow of this embodiment is divided into five parts: Stokes solution, polarization feature extraction, non-subsampled Shearlets multi-scale decomposition, high and low frequency coefficient fusion, image reconstruction and target enhancement.

[0039] This example provides a non-subsampled shear wave-based visible light polarization image fusion method, which specifically includes the following steps:

[0040] Step 1, Stokes solution:

[0041] In this embodiment, the first image 3 and Figure 4 Four different polarization state images with...

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Abstract

The present invention provides a visible-light polarization image fusion method based on non-subsampled shearlets. At first, Strokes calculation is carried out for different polarization images captured by a multi-detector camera at the same time to obtain a polarized degree image, a polarized angle image and a light intensity image by which a polarization feature image of a target is extracted. Then, non-subsampled shearlets transform (NSST) decomposition is performed on the polarization feature image and the light intensity image separately. High and low-frequency fusion coefficients are determined separately in a frequency domain according to window energy and an average value. An initial fusion image is reconstructed by using NSST inverse transform. Finally, the initial fusion image is subjected to target enhancement to obtain final fusion image output. Compared with a conventional target detection method utilizing multi-scale decomposition, the method provided by the present invention increases means for polarization feature extraction and target enhancement, effectively increases details of the fusion image, improves target and background contrast, highlights polarization properties of the target, improves the ability of scene perception and target detection, and is suitable for a target detection system.

Description

technical field [0001] The invention relates to a visible light polarization image fusion method, in particular to a visible light polarization image fusion method based on down-sampled shear waves, belonging to the fields of digital image processing and photoelectric detection. This method realizes polarization image fusion based on non-subsampling shear wave, effectively fuses images of different polarization states collected by lenses and multi-photoelectric sensors, and performs further target enhancement processing to output images with rich details and high contrast. Effectively highlight the polarization characteristics of the target, and improve the ability of scene perception and target detection. It can be widely used in various photoelectric imaging devices and target detection systems. Background technique [0002] Existing target detection methods mainly include visible light detection, radar, infrared detection, etc. Infrared detection is the most important de...

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Application Information

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IPC IPC(8): G06T5/50
Inventor 刘征曾恒亮许波黄烨王华闯徐智勇魏宇星
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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