A high-speed and high-precision spectral video system and method for flame shooting

Abstract

The invention discloses a high-speed and high-precision spectral video system and method for shooting flames. The system uses the filter module to filter the optical signal of the required band; the light splitting module divides the signal of the filter module into two identical beams, which enter the encoding aperture module and the RGB information acquisition module respectively; the encoding aperture module sparsely Sampling; the dispersion module disperses the optical signal and transmits it to the grayscale information acquisition module; the data reconstruction module aligns the two signals from the grayscale information acquisition module and the RGB information acquisition module, denoises and reconstructs using the bilateral filter algorithm, and then Provide the result to the display module for storage and display. Aiming at the flame scene, the present invention utilizes wide and narrow band filters and corresponding masks to perform spectral reconstruction at a low number of sampling points, to obtain flame spectral features with wide bandwidth, and to analyze the narrow spectrum near the flame characteristic peak. Spectral reconstruction with a high number of sampling points is carried out to obtain high-accuracy spectral data.

Description

technical field [0001] The invention relates to the fields of computational imaging and combustion diagnosis, in particular to a high-speed and high-precision spectral video system and method for shooting flames. Background technique [0002] Traditional cameras mimic the human eye, using Bell filters to record measurements on the sensor, but this approach loses a lot of spectral detail. The hyperspectral imaging system is committed to measuring dozens or even hundreds of spectral samples for each pixel, and the obtained hyperspectral image can be regarded as a three-dimensional data cube, in which two dimensions constitute a plane space, and the third dimension is the spectrum. High-resolution spectral images of internal details can reveal the inherent properties of the subject and ambient light. Such data has important applications in many fields, such as military, agriculture, mineral detection and identification, and criminal investigation. [0003] In the field of com...

AI Technical Summary

Problems solved by technology

However, traditional flame spectrum measurement, using single-point or scanning spectrometers, cannot obtain dynamic spectral data with two-dimensional spatial resolution at the same time.

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