H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/243 (2006.01) G02B 21/36 (2006.01) G06T 1/00 (2006.01) H04N 1/401 (2006.01)
Patent
CA 2130337
A circuit for correcting an image signal received from a camera (102) which includes a plurality of charge coupled devices (102) each for providing a light (112) signal indicative of the intensity of light incident thereon; the plurality of light signals are indicative of an image received by the camera (102). A correction circuit (212) includes: a gain memory (206) for storing a plurality of gain correction factors each associated with a respective charge coupled device, and an offset memory (214) for storing a plurality of offset correction factors each associated with a respective one of the plurality of charged coupled devices (102). The gain memory (206) is responsive to a control circuit (210) for multiplying (208) the plurality of electric signals by the appropriate gain correction factor. Similarly, the offset memory (214) is responsive to a control circuit (210) for adding (216) the appropriate one of the plurality of offset correction factors with the signal from its respective charge coupled device (102).
Circuit destiné à corriger un signal d'image provenant d'une caméra (102). Comprend un certain nombre de dispositifs à transfert de charge (DTC) (102) qui produisent chacun un signal lumineux (112) indiquant l'intensité de la lumière qu'ils reçoivent; lesdits signaux lumineux indiquent une image reçue par la caméra (102). Un circuit correcteur (212) comprend : une mémoire de gain (206) pour stocker un certain nombre de facteurs de correction de gain associés respectivement à un DTC particulier, et une mémoire de décalage (214) pour stocker un certain nombre de facteurs de correction de décalage associés respectivement à l'un des DTC en particulier (102). La mémoire de gain (206) répond à un circuit de commande (210) pour fins de multiplication (208) des signaux électriques par le facteur de correction de gain voulu. De même, la mémoire de décalage (214) répond à un circuit de commande (210) pour fins d'ajout (216) du facteur de correction de décalage voulu au signal provenant du DTC qui lui est associé (102).
Hayenga Jon Wallace
Schmidt Robert C.
Neopath Inc.
Smart & Biggar
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