Methods and apparatus for enhancing image sharpness

Details Methods and apparatus for enhancing image sharpness Methods and apparatus for enhancing image sharpness

1995-11-02

1997-01-14

Tokar, Michael J.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441317, A61B 603

Patent

active

055947670

ABSTRACT:
The present invention, in one form, is a method for enhancing image sharpness in images generated from CT scan data by using enhancement masks. The enhancement masks are generated, in one embodiment, by generating difference image data from the original age data and low pass filtered image data. The original image data CT numbers are assigned to image regions, e.g., bone, air, and soft tissue, and based on such CT number classifications, certain data in the difference image is fully or partially suppressed. Subsequent to suppressing some difference image data, the difference image data set, which is sometimes referred to as an enhancement mask, is then combined With the original image data to increase image sharpness.

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