Flat-field correction

The brightness variation due to vignetting, as shown here, can be corrected by selectively brightening the perimeter of the image.

Not to be confused with Petzval field curvature, which refers to focus uniformity.

Flat-field correction is a technique used to improve quality in digital imaging. The goal is to remove artifacts from 2-D images that are caused by variations in the pixel-to-pixel sensitivity of the detector and/or by distortions in the optical path. It is a standard calibration procedure in everything from pocket digital cameras to giant telescopes.

单词	Field flatness
释义	Field flatness 英语百科 Flat-field correction Not to be confused with Petzval field curvature, which refers to focus uniformity. Flat-field correction is a technique used to improve quality in digital imaging. The goal is to remove artifacts from 2-D images that are caused by variations in the pixel-to-pixel sensitivity of the detector and/or by distortions in the optical path. It is a standard calibration procedure in everything from pocket digital cameras to giant telescopes.
随便看	effluent oil recovery的意思 effluent oil treatment的意思 effluentoiltreatment的意思 effluent oil treatment eqmpment的意思 effluent oil treatment equipment的意思 effluent per unit length的意思 effluent pipe的意思 effluent pit的意思 effluent pump的意思 effluent purification的意思 effluent quality的意思 effluent quality standard的意思 effluentquality standard的意思 effluent reaction gas的意思 effluent recovery plant的意思 effluent refrigeration alkylation的意思 effluent release limit的意思 effluent river的意思 effluent的意思 effluent sample valve的意思 effluent seepage的意思 effluent segregation system的意思 effluent settling chamber的意思 effluent sewage的意思 effluent sewerage的意思

Field flatness

Flat-field correction