Handbook of Biomedical Optics

Multi/Hyper-Spectral Imaging 141

or “instantaneous” or “simultaneous” spectral imagers capable

of recording the information required for constructing the

spectral cube without spectral or spatial scanning. SE–SI sys-

tems exhibit several distinct advantages over scanning devices,

including fast acquisition of accurately registered images, high

device robustness and reliability, low cost, automation, simplic-

ity of operation, etc. On the other hand, however, current tech-

nological limitations set a trade-o between the spatial and the

spectral resolution that can be captured simultaneously with SE

devices. e current level of development of SE systems allows

for the simultaneous acquisition of a relatively small number of

spectral i