图2. 多光谱成像原理图
(A) 点扫描; (B) 线扫描; (C) 波长扫描; (D) 提取光谱维度中的R、G、B颜色通道可以得到彩色实物图; (E) 不同扫描方式得到的数据最终是包含空间信息与光谱信息的立方体; (F) 依据不同波长对采集的三维数据立方体进行不同光谱特征下的图像提取, 可得到特定离散波长下的样本数据信息。

Figure 2. Schematic diagram of multispectral imaging
(A) Point scanning; (B) Line scanning; (C) Wavelength scanning; (D) Color images can be obtained by extracting the R, G and B color channels in the spectral dimension; (E) The data obtained by different scanning methods are ultimately cubes containing spatial information and spectral information; (F) According to different wavelengths, the collected three-dimensional data cubes are extracted with different spectral features, and the sample data information under specific discrete wavelengths can be obtained.