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

Claim 16:
17. The method of claim 10, wherein, the PCA further includes obtaining a plurality of eigenvalues, and the generating of the spectral image includes:
performing a converting operation to convert the original color image to a CIE 1931 XYZ space, so as to obtain a converted original image;
obtaining the spectral image using the following equation:

[SSpectrum]=[EV][M][VColor″], where [SSpectrum] is a matrix containing an X value, a Y value and a Z value of each of the pixels of the spectral image in the CIE 1931 XYZ color space, M is the spectral transformation matrix, [EV] represents the principal component eigenvalues, and

[VColor″]=[XTYTZT XTYT XTZT YTZT XT YT ZT]T, where XT, YT and ZT represent an X value, a Y value and a Z value of each pixel of the converted original image in the CIE 1931 XYZ color space, respectively.