olemus
(a) -pildistus:
sama vaatevälja (näiteks maapinna ala) pildistamine
elektromagnetkiirguse spektri mitmes eri vahemikus,
näiteks nähtava valgusega ja infrapunakiirgusega
= acquisition of the same image in several wavelength regions

(b) -pildindus:
distsipliin ja tehnoloogia, mis käsitleb
sellise pildistuse meetodeid ja vahendeid
= the discipline and technology dealing with the methods and means of such kind of imaging

ülevaateid
https://www.youtube.com/watch?v=LjTprliFuGs

https://www.youtube.com/watch?v=bX2qaw0lw6Q

https://en.wikipedia.org/wiki/Multispectral_image

https://en.wikipedia.org/wiki/Hyperspectral_imaging

http://indico.ictp.it/event/a08142/session/19/contribution/12/material/0/1.pdf

rakendusi
https://ieeexplore.ieee.org/document/8395228

https://www.sciencedirect.com/science/article/pii/B9780444639776000249

https://www.rp-photonics.com/multispectral_imaging.html

https://scholarworks.uark.edu/cgi/viewcontent.cgi?article=1067&context=eleguht

https://www.witpress.com/Secure/elibrary/papers/SAFE13/SAFE13026FU1.pdf

https://www.osa-opn.org/home/articles/volume_26/october_2015/features/hyperspectral_imaging_for_safety_and_security/