Active color correction to compensate for near field color cast

Details Active color correction to compensate for near field color cast Active color correction to compensate for near field color cast

2007-10-02

2007-10-02

Bella, Matthew C. (Department: 2624)

Image analysis

Color image processing

Color correction

C382S194000, C382S274000, C358S518000

Reexamination Certificate

active

10447247

ABSTRACT:
A system includes a video display device and an image capture device, such as a miniature camera. The system corrects a real-time video image of an object within a near field region of the video display device, if that display device is displaying a primary image that alters the appearance of the near-field object. Displaying primary images having high red, blue, or green content may alter the appearance of the object to the capturing device. The system accesses the primary image to be displayed on the display device and derives an image characteristic for that image. The image characteristic may be compared to threshold values to derive a color correction score. The color correction score may be used to derive a correction color for the pixels in the real-time image of the object. These correction color pixels are used to reconstruct that image of the object, thereby removing the color alteration that resulted from the display of the primary image on the display device. The system may be a computer system, a personal data assistant, a cellular telephone, or other devices.

REFERENCES:
patent: 5771312 (1998-06-01), Spitzer
patent: 7015955 (2006-03-01), Funston et al.
patent: 2004/0140973 (2004-07-01), Zanaty
patent: 2004/0183923 (2004-09-01), Dalrymple
Cooper et al. (“A Novel Approach to Color Cast Detection and Removal in Digital Images,” IS&T/SPIE Conf. Color Imaging: Device-independent Color, Color Hardcopy, and Graphic Arts V, Jan. 2000, pp. 167-177).

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