Figure 3. Multispectral imaging results of a color scene by MSPI.

(a) is the target color scene, i.e., a printed film of the CIE 1931 color space. (b) is the spectral modulation film used in our setup. The rainbow spectrum is converged along the radius of the film, thus different wavelength bands are modulated with different sinusoidal periods as the film rotates. (c) shows an exemplar recorded 1D measurement sequence corresponding to a specific spatial pattern. (d) is the Fourier decomposition of the measurements, which exhibits several dominant frequencies. The coefficients of these dominant frequencies are exactly the response signals’ strengths of corresponding wavelength bands. (e) shows the decomposed sequences of different spectrum bands, and (f) presents the final reconstructed multispectral images (each owning 64 × 64 pixels) corresponding to 10 narrow bands ranging from 450 nm to 650 nm.