A method and apparatus for improving an image received from a endoscope having a flexible fiber optic bundle that produces an interstitial grid overlay due to the dead space between each fiber pixel. The interstitial grid pattern in the image, is substantially eliminated by processing the image...http://www.google.co.uk/patents/US5751340?utm_source=gb-gplus-sharePatent US5751340 - Method and apparatus for reducing the inherently dark grid pattern from the video display of images from fiber optic bundles 
