Dark frame subtraction: USPTO

Curtis A Corum

Research output: Other contribution


A method of adjusting a portion of a dark frame in accordance with compensation values related to dark reference pixels of a picture frame to obtain an adjusted dark frame portion, and then subtracting the adjusted dark frame portion from a corresponding picture frame portion. The technique may be used to improve the accuracy of image sensors such as those used in digital cameras or video conferencing cameras by compensating for dark current noise. The technique may be applied to both CMOS image sensors and, in general, to any image sensors requiring dark frame subtraction. The techniques may also be used in conjunction with calibration of image sensors and imaging systems.
Original languageEnglish
StatePublished - 2000

Bibliographical note

Type: Other


Dive into the research topics of 'Dark frame subtraction: USPTO'. Together they form a unique fingerprint.

Cite this