Correction of defective pixels in a detector

Details Correction of defective pixels in a detector Correction of defective pixels in a detector

2006-06-27

2006-06-27

Ahmed, Samir (Department: 2721)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S132000, C250S208100

Reexamination Certificate

active

07068854

ABSTRACT:
A detector imaging system having an apparatus and method for correcting defective pixels in an acquired image is disclosed herein. The system includes a correction scheme including temporarily replacing a defective pixel with a linear interpolation of the defective pixel's surrounding neighboring pixel values, determining a local gradient based in part on the acquired image and a gradient kernel, and providing a correction value based on the local gradient to correct the defective pixel. The correction scheme is repeated a plurality of times as desired to correct all the defective pixels in the acquired image.

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