vignetting

vignetting

A gradual change in overall tone of an image from the centre outwards, caused by the imaging device gathering less radiation from the periphery of its field of view than from the centre. Most usually associated with the radially increasing angel between a lens and the Earth's surface, and the corresponding decrease in the light-gathering capacity of the lens.

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Industry/Domain: Earth science
Category: Remote sensing
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Industry/Domain: Medical Category: Rheumatology

reflex

a reflected action or movement; the sum total of any particular automatic response mediated by the nervous system. A reflex is built into the nervous ...