Image Acquisition Resource Mapping -- Remote Sensing and GIS for Conservation

Technical Differences Between the Multispectral and Natural Color Camera Systems

The MS-4100 multispectral camera uses three 1,916 x 1,078-pixel sensors with a beam splitting prism and dichotic trim filters to extract precise separate bands of the spectrum. This use of separate sharp-cut filters provides the consistent radiometric response of the system.

Our Canon natural color camera uses a single large sensor (5,616 x 3,744 pixels) with small dye patches over each pixel in a Bayer pattern of red, green, and blue. The monochrome image recorded by the camera is converted to RGB 3-band color by interpolating each pixel’s missing colors from its neighbors. The results approximate normal color and can be interpreted visually, but lack sufficient spectral separation for radiometric analysis.