Fig. 1. Structural schematic of the wide field-of-view polarization interference imaging spectrometer

Fig. 2. Schematic of extracting the interference intensity information of the same object point

Fig. 3. Principle diagram of partial upsampling phase correlation method

Fig. 4. Test images. (a) Referenced image; (b) registered image with translation

Fig. 5. Cross-correlation spectrograms. (a) With gradient pretreatment; (b) without gradient pretreatment

Fig. 6. Flow chart of image registration method

Fig. 7. Registration results. (a) Deviation of scale ratio; (b) deviation of rotation angle; (c) deviation of translation in X-axis direction; (d) deviation of translation in Y-axis direction

Fig. 8. Original images and registered images. (a)-(c) Original images; (d)-(f) registered images

Fig. 9. Recovered spectral results. (a) Image in 462 nm; (b) image in 485 nm; (c) image in 531 nm; (d) image in 633 nm; (e) image in 720 nm; (f) RGB color fusion image