US Patent No. 9,088,756

SYSTEMS AND METHODS FOR CAMERA IMAGE CORRECTION AND WHITE BALANCING


Patent No. 9,088,756
Issue Date July 21, 2015
Title Systems And Methods For Camera Image Correction And White Balancing
Inventorship Samson Huang, Saratoga, CA (US)
Assignee MARVELL WORLD TRADE LTD., St. Michael (BB)

Claim of US Patent No. 9,088,756

1. A method, comprising:
capturing, by an image capture device, first pixel values of a first calibration image illuminated by first color temperature
light, wherein the first calibration image has first known pixel values;

determining a color sensor adjustment matrix that, when multiplied by the captured first pixel values, yields the first known
pixel values;

capturing, by the image capture device, second pixel values of a second calibration image illuminated by a a second color
temperature light different than the first color temperature light, wherein the first calibration image has second known pixel
values;

multiplying the second pixel values by the color sensor adjustment matrix to yield adjusted second pixel values; and
determining a color temperature balance factor that, when multiplied by the adjusted second pixel values, yields the second
known pixel values.