Background replacement for an image

Details Background replacement for an image Background replacement for an image

1995-10-18

1996-11-12

Lee, Michael H.

Television

Image signal processing circuitry specific to television

Special effects

348590, 348591, H04N 974

Patent

active

055745113

ABSTRACT:
The present invention is useful in taking images for identification and other purposes without the requirement of a photobooth, regardless of the background of the image. The original background of the image is replaced with a preselected background. Two IR images with different intensities of IR illumination in the foreground and background regions of the scene, respectively, are compared for light intensity differences between corresponding pixels of the two images to form a mask differentiating between the foreground and background regions of the image. The mask is then applied to a visible light image of the scene and the preselected background is used to replace the original background.

REFERENCES:
patent: 4751571 (1988-06-01), Lillquist
patent: 4967276 (1990-10-01), Murakami et al.
patent: 5001558 (1991-03-01), Burley et al.
patent: 5386242 (1995-01-01), Chaplin
patent: 5400081 (1995-03-01), Chaplin

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