Image analysis – Image enhancement or restoration – Artifact removal or suppression
Patent
1996-06-18
1998-05-12
Rogers, Scott A.
Image analysis
Image enhancement or restoration
Artifact removal or suppression
358463, 348241, G06F 940, G06T 500, H04N 1409
Patent
active
057518637
ABSTRACT:
In a design of an optical arrangement for a digital imaging system, optical elements are selected and arranged based upon achieving low levels of aberrations other than distortion, with a distortion level of 5% or greater being introduced by sacrificing distortion-free imaging to achieve such low levels. The distortion of the optical arrangement is characterized and then identified to a digital image processing system, allowing the distortion that is introduced at the optical level to be corrected at the processing level. The approach is to provide front end image shaping that sacrifices distortion-free imaging to control other aberration contributions and then to provide back end digital reshaping to substantially correct the distortion. The identification of front end and back end shaping and reshaping is made with reference to a digitizing sensor that provides the image raw data. In one embodiment, the sensor is a two-dimensional array of sensor elements.
REFERENCES:
patent: 3583789 (1971-06-01), Brighton
patent: 5216545 (1993-06-01), Saito
patent: 5276519 (1994-01-01), Richards et al.
patent: 5353056 (1994-10-01), Westerink et al.
Croll Timothy Rex
Hewlett -Packard Company
Rogers Scott A.
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