Calibration method and system for relative spectral-response characteristic of CCD imaging device

Abstract

The invention relates to a method for calibrating the relative spectral response characteristic of a CCD imaging device. The method comprises the following steps: A. taking a light source with known spectral radiation distribution as a measurement object, utilizing the CCD imaging device to be calibrated for the imaging of the measurement object, and acquiring and analyzing the image to obtain a measured value; B. changing the spectral radiation flux entering the CCD imaging device through adjusting the thermodynamic temperature of the light source and / or adopting a color filter; C. constructing an equation set of mathematical physics for describing the corresponding relation between the measured value and the relative spectral response characteristic according to the known equation of mathematical physics of radiative transfer of the CCD imaging device; D. taking the measured value of the CCD imaging device under different spectral radiation flux as known quantity and solving the equation of mathematical physics, so as to calibrate the relative spectral response characteristic of the CCD imaging device. The invention further discloses a system for calibrating the relative spectral response characteristic of the CCD imaging device. The method is simple and efficient, and can avoid the introduction of instrument measurement transfer errors.

Description

Calibration method and system for relative spectral response characteristics of CCD imaging equipment technical field The invention relates to spectral detection technology, in particular to a calibration method and system for realizing the relative spectral response characteristics of a CCD (Charge-Couple Device, charge-coupled device) imaging device based on a light source with known spectral radiation distribution. Background technique At present, CCD sensor application technology has become a comprehensive technology integrating optics, electronics, precision machinery and microcomputer, and has a wide range of cross-applications in the fields of modern photonics, photoelectric detection and modern measurement. Based on the application of CCD imaging equipment, it is usually necessary to perform instrument calibration according to different measurement application fields, mainly including optical and geometric characteristic calibration, light intensity response calibra...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a method and system for calibrating the relative spectral response characteristics of CCD imaging equipment, so as to solve the defects of complexity and transmission of instrument measurement errors caused by the calibration of high-precision instruments such as monochromators in the prior art

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