Correction algorithm for contiguous ccd elements leakage

Details Correction algorithm for contiguous ccd elements leakage Correction algorithm for contiguous ccd elements leakage

H - Electricity

04

N

350/54

H04N 5/217 (2006.01) G06T 5/20 (2006.01)

Patent

CA 2036179

A row scanner (24) sequentially reads signals derived from charges on an array (10) of photosensitive elements disposed in rows and columns, and serially applied the resulting signals to a finite impulse filter (30). Within the finite impulse filter (30), the resulting signal serially read are added to provide intermediate signals corresponding to photosensitive elements equal distantly spaced from the one photosensitive element considered, and the sums of those intermediate signals are corrected by factors either measured or empirically determined for the photosensitive elements within each circle to provide a plurality of correction signals. The correction signals are accumulatively subtracted from the uncorrected resulting image signal read from the photosensitive element considered, to provide a final image signal corrected for undesired contributions due to leakage from neighboring photosensitive elements in a plurality of circles of photosensitive elements of increasing radius.

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