Image fusing method based on Kaiser window FFT single-peak interpolation and modification

An image fusion and interpolation technology, applied in the direction of testing the dielectric strength, etc., can solve the problems of undetectable, time-consuming and labor-intensive patrol inspection of electric equipment, and it is difficult to find out whether there are hidden dangers in the equipment in time

Inactive Publication Date: 2018-05-04
YUNNAN POWER GRID CO LTD PUER POWER SUPPLY BUREAU
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Problems solved by technology

[0003] However, in engineering practice, some equipment defects cannot be detected by both the ultraviolet imager and the infrared imager at the same time. It is easy to miss detection by using only one instrument, and there is no mechanism for combined infrared and ultraviolet detection and analysis.
At the same time, live inspections of...

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  • Image fusing method based on Kaiser window FFT single-peak interpolation and modification
  • Image fusing method based on Kaiser window FFT single-peak interpolation and modification
  • Image fusing method based on Kaiser window FFT single-peak interpolation and modification

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[0024] See attached Figure 1-3 As shown, an image fusion method based on Kaiser window FFT unimodal interpolation correction, including the following steps:

[0025] S1: Based on the Kaiser window FFT single-peak interpolation correction formula, the frequency shift of FFT and the window function Kaiser's spectrum on the left and right sides of the fundamental, harmonic and inter-harmonic peak frequency points of the maximum spectral line and the sub-maximum spectral line Amplitude Get general amplitude, phase, and frequency interpolation correction formulas for signal fundamentals, harmonics, and interharmonics.

[0026] Step S1 further includes:

[0027] S101: Based on the Kaiser window FFT single-peak interpolation correction formula, the frequency shift of FFT and the window function Kaiser spectrum on the left and right sides of the fundamental wave, harmonic and inter-harmonic peak frequency points, the maximum spectral line and the sub-maximum spectral line Amplitude...

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Abstract

The invention discloses an image fusing method based on Kaiser window FFT single-peak interpolation and modification. The method includes the steps of obtaining the universal amplitude, phase and frequency interpolation and modification formula of signal fundamental waves, harmonic waves and inter-harmonic waves through a polynomial fitting formula on the basis of a Kaiser window FFT single-peak interpolation and modification formula, the frequency shift property of an FFT and the amplitude of the maximum spectral lines and secondary spectral lines of a window function Kaiser frequency spectrum on the left side and the right side of a fundamental wave, harmonic wave and inter-harmonic wave peak frequency point, calculating to-be-tested image signals according to the universal amplitude, phase and frequency interpolation and modification formula, and calculating fusing efficiency. By means of a single-peak interpolation and modification algorithm, through the flexibility of Kaiser window function shape parameters, the interpolation and modification of high-precision harmonic wave parameters of dynamic signals are achieved, and the high image fusing degree is achieved.

Description

technical field [0001] The invention relates to the fields of ultraviolet, infrared, and visible spectra and the field of digital imaging, in particular to an image fusion method based on Kaiser window FFT single-peak interpolation correction. Background technique [0002] High-voltage equipment with degraded insulation performance is often accompanied by early abnormal heating or discharge signs before the insulation fails completely. The heating is accompanied by infrared radiation, and the discharge is accompanied by ultraviolet radiation. Evaluate the insulation condition of operating equipment and detect equipment defects in time. [0003] However, in engineering practice, some equipment defects cannot be detected by both the ultraviolet imager and the infrared imager at the same time. Using only one instrument is prone to missed detection, and there is no mechanism for combined infrared and ultraviolet detection and analysis. At the same time, live inspections of powe...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 史俊杨玉兵谢照祥李文亮杨堂华张冠一刘兴涛史翠红陈仕骄王杰李卫
Owner YUNNAN POWER GRID CO LTD PUER POWER SUPPLY BUREAU
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