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

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...

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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 power equipment are time-consuming, heavy maintenance tasks, and long cycles. It is difficult to find out whether there are hidden dangers in the equipment in time. With the development of online monitoring technology, the detection of substation equipment will also be automated, unmanned, and real-time online analysis. direction development

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