Method and device for evaluating random noise in image sensor

Details Method and device for evaluating random noise in image sensor Method and device for evaluating random noise in image sensor

2007-09-10

2010-11-16

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07834918

ABSTRACT:
A random noise evaluation method is comprised of: capturing and obtaining current image data; calculating a difference between the current image data and an average of previous image data; calculating a current difference square sum using a sum of the difference and a previous difference square sum; and calculating a random noise value using the current difference square sum. Since a noise evaluation algorithm obtains random noises without storing image data for all pixels of a*b*n, it is able to evaluate random noise evaluation for a high-resolution image sensor even with a relatively small size of memory.

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