Christie Digital Systems Usa, Inc.

Xiaodan Hu

Mark Lamm

Paul Fieguth

Zohreh Azimifar

Mohamed A Naiel

Ibrahim Ben Daya

A device, system and method for enhancing high-contrast and text regions in projected images is provided. A device applies, to an input image: a high-contrast sharpening filter sharpening high-contrast regions producing a high-contrast sharpened image; and a background sharpening filter sharpening other regions of the input producing a background sharpened image, the background sharpening filter applying less sharpening than the high-contrast sharpening filter. The device: determines, using high-contrast and motion detectors, the input image and/or previous images, masks selecting stationary high-contrast regions of the input image; determines, using the masks, a background mask selecting remaining regions of the input image; applies the masks to the high-contrast sharpened image selecting stationary high-contrast regions therefrom; applies the background mask to the background sharpened image selecting the remaining regions therefrom; combines the stationary high-contrast and remaining regions to produce a combined enhanced image; and controls a projector to project the combined enhanced image.

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Waterloo, Canada

Xiaodan Hu