ABSTRACT
Sensing is ubiquitous in multitudinous applications that include biosensing, chemical sensing, surface acoustic wave sensing, sensing coupled with actuation in control, and imaging sensors. This chapter is concerned with multispectral sensing that spans acquisition, processing, and classification of data from multiple images of the same scene at several spectral regions. Multispectral sensing is in multiple, separated and narrow wavelength bands. The multisensor array technology is particularly suited to microelectromechanical systems applications where accuracy, reliability, and low transducer failure rates are essential in applications spanning chronic implantable sensors, monitoring of semiconductor processes, mass-flow sensors, optical cross-connect switches, pressure and temperature sensors. Multispectral sensors can usually be of help in detecting, classifying and, possibly, distinguishing between materials but hyperspectral sensors may be required to actually characterize and identify the materials. Development of super arrays is a trend in many fields like the chemical field, where the environment could be gaseous.
