Automatic image sharpening in an electronic imaging system

Details Automatic image sharpening in an electronic imaging system Automatic image sharpening in an electronic imaging system

1995-12-21

1997-12-09

Rogers, Scott A.

Image analysis

Image enhancement or restoration

Image filter

382263, 348231, 348232, 348233, 3589091, 395109, G06T 500

Patent

active

056968507

ABSTRACT:
Digital reproductions of any size made from images scanned from film or taken by an electronic camera are optimally sharpened in a system-wide operation. The images are captured by an imaging device having an electronic imager and subsequently reproduced in a reproduction device, both imaging and reproduction devices having respective modulation transfer functions. Initially, the imaging device modulation transfer function and the reproduction device modulation transfer function are stored in separate devices. After an image is captured with the imaging device, a system modulation transfer function is generated from the imaging device modulation transfer function and the reproduction device modulation transfer function. Then a sharpening function is generated from the system modulation transfer function and the sharpening filter function is applied to the image captured by the imaging device in order to sharpen the image.

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"TIFF/EP, A Flexible Image Format for Electronic Still Cameras", by Ken Parulski and George Lathrop, Eastman Kodak Company, Rochester, NY. Preprint from IS&T's 48th Annual Conference, May 1995.

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