optical contrast target

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• Contrast-enhanced ultrasound — (CEUS) is the application of ultrasound contrast medium to traditional medical sonography. Ultrasound contrast agents rely on the different ways in which sound waves are reflected from interfaces between substances. This may be the surface of a… …   Wikipedia

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• Optical proximity correction — An illustration of optical proximity correction. The blue Γ like shape is what we d like printed on the wafer, in green is the shape after applying optical proximity correction, and the red contour is how the shape actually prints (quite close to …   Wikipedia

• Minimum resolvable contrast — The 1951 USAF Tri bar Resolution Test Target is a classic example of a three bar target for the MRC test. The target is typically illuminated by an integrating sphere irradiating in the visible spectrum. Minimum resolvable contrast (MRC) is a… …   Wikipedia

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• electro-optical guidance — The guidance making use of visible contrast patterns of a target or the surrounding area to effect seeker lock on and terminal homing. TV guidance is one form of electro optical guidance. The target image is picked up by the TV camera in the… …   Aviation dictionary

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