Flat Field

Documentation

• https://www.imatest.com/support/docs/23-1/flatfield/

• https://www.imatest.com/support/docs/23-1/flatfield2/

• https://www.imatest.com/support/docs/23-1/flatfield_int/

• https://www.imatest.com/support/docs/23-1/blemish/

Quick Summary

Flat Field measures lens vignetting (light fall-off) and other image nonuniformities. For example it can measure the evenness of flash illumination (using light bounced off a white wall) or the uniformity of flatbed scanners. In Imatest, Flat Field can also analyze color shading (nonuniformity), hot and dead pixels, and blemishes; it can also display a pixel level histogram, a grid (sector) plot, and a detailed image of fine nonuniformities (i.e., sensor noise).

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