Image correction circuit

Details Image correction circuit Image correction circuit

H - Electricity

04

N

H04N 5/217 (2006.01)

Patent

CA 2064721

An apparatus for reading and correcting an image including: a sensor which receives light and converts it to electrical signals; a digitizing unit to convert the analog image signal to a digital signal; a calibration unit to capture calibration data for each pixel under known illumination conditions and to produce individual correction values for each pixel and a correction unit comprised of a look-up table addressed by both the digital image signal and the correction values which corrects the digital image data.

L'invention est un appareil de lecture et de correction d'images comportant un capteur qui reçoit la lumière et la convertit en signaux électriques, une unité de numérisation qui convertit le signal d'imagerie analogique en un signal numérique, une unité d'étalonnage qui saisit des données d'étalonnage pour chaque pixel dans des conditions d'éclairage connu et qui produit des corrections individuelles pour chaque pixel, et une unité de correction constituée d'une table de recherche consultée par le signal d'imagerie numérique et les corrections, qui corrige les données d'imagerie numérique.

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