falsecolorcompositie

False-color composite is an imaging technique used to represent data from sensors that capture light in multiple spectral bands, often in the infrared or ultraviolet portions of the electromagnetic spectrum, which are not visible to the human eye. In a false-color composite, the data from three different spectral bands are assigned to the red, green, and blue color channels of a display. This reassignment allows for the visualization of features that might not be apparent in a true-color image, where the assigned colors correspond to their natural appearance.

The specific choice of which spectral bands to assign to the red, green, and blue channels determines the appearance and interpretation of the resulting false-color image. Different combinations highlight different aspects of the scene. For example, in remote sensing, a common false-color composite assigns near-infrared to red, red to green, and green to blue. This combination makes healthy vegetation appear bright red because vegetation strongly reflects near-infrared light.

False-color composites are widely used in various fields, including remote sensing for vegetation analysis, geological mapping, and environmental monitoring. They are also employed in astronomy to visualize and study celestial objects emitting radiation outside the visible spectrum. The technique is valuable for enhancing contrast and distinguishing between different materials or phenomena based on their unique spectral signatures.