Optimal tone scale mapping in electronic cameras

Details Optimal tone scale mapping in electronic cameras Optimal tone scale mapping in electronic cameras

1995-05-18

1996-07-23

Metjahic, Safet

Television

Camera, system and detail

Combined image signal generator and general image signal...

348675, 358519, H04N 5202, H04N 5235

Patent

active

055394590

ABSTRACT:
An improved electronic still imaging camera is described wherein electronic voltage values representative of an image are transformed according to an optimum tone scale mapping gamma curve. The gamma curve utilizes a subjective element along with an element associated with scene reflectivity to optimize tone scale variations according to steps in an analog-to-digital converter while reducing contouring in the image.

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