Patent ID: 11962949
Assignee: NATIONAL CHUNG HSING UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. A method for obtaining a spectral transformation matrix to be used in performing air pollution estimation, the method being implemented using a processor of a computer device, the computer device storing a reference color image of a reference object and a reflection spectral dataset associated with the reference object, the method comprising:
performing a converting operation to convert the reference color image and the reflection spectral dataset to a CIE 1931 XYZ color space created by the International Commission on Illumination (CIE) in 1931, so as to obtain a converted reference image and a converted spectral dataset corresponding to the reference color image and the reflection spectral dataset, respectively;
obtaining a parameter matrix from the converted reference image;
obtaining an adjustment matrix from the converted spectral dataset and the parameter matrix;
obtaining a corrected image based on the parameter matrix and the adjustment matrix; and
obtaining the spectral transformation matrix from the reflection spectral dataset and the corrected image.