Systems and methods for witness card analysis

Details Systems and methods for witness card analysis Systems and methods for witness card analysis

2007-11-30

2011-10-25

Bali, Vikkram (Department: 2624)

Image analysis

Applications

C382S141000, C382S103000, C366S132000

Reexamination Certificate

active

08045752

ABSTRACT:
A system for and method of assessing fluid spray using image processing techniques of a calibration and one or more as-sprayed witness cards. Calibration and as-sprayed witness cards are exposed to a backlight sufficient to make a plurality of stains thereon electronically visible. At the same time an image of the stains is captured by, e.g., a digital camera. Resulting image data is processed to assess characteristics of the stains of the fluid on the as-sprayed witness card(s) and thereby assess characteristics of the spray, e.g., volume of fluid delivered. In one embodiment, the witness card is a chemically coated semiopaque plate.

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