A six-camera digital video imaging system sensitive to visible, red edge, near-infrared, and mid-infrared wavelengths
Titel:
A six-camera digital video imaging system sensitive to visible, red edge, near-infrared, and mid-infrared wavelengths
Auteur:
Fletcher, R. S. Everitt, J. H.
Verschenen in:
Geocarto international
Paginering:
Jaargang 22 (2007) nr. 2 pagina's 75-86
Jaar:
2007-06
Inhoud:
This paper describes a six-camera multispectral digital video imaging system designed for natural resource assessment and shows its potential as a research tool. It has five visible to near-infrared light sensitive cameras, one near-infrared to mid-infrared light sensitive camera, a monitor, a computer with a multichannel digitizing board, a keyboard, a power distributor, an amplifier, and a mouse. Each camera is fitted with a narrowband interference filter, allowing the system to obtain imagery in the blue (447 - 455 nm), green (555 - 565 nm), red (625 - 635 nm), red edge (704 - 716 nm), near-infrared (814-826 nm), and mid-infrared (1631 - 1676 nm) regions of the electromagnetic spectrum. Analogue video acquired by this system is converted to digital format. Radiometric resolution of the imagery is 8-bit (pixel values range 0 - 255). Images obtained by the system can be evaluated individually and/or in combination with each other to assess natural resources.
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