Compensation for adjacent pixel interdependence
OwnerDonald Henry Willisinventor
Life of this patent
Estimating the term…
Abstract
A method and system for reducing pixel interdependence errors in an imager caused by adjacent pixel drive interdependence. The method compares a first brightness control level for a first pixel to a brightness control level for at least one adjacent pixel of the imager. Based on the results of the comparing step, the system modifies the first brightness control level for the first pixel to compensate for the pixel interdependence effect. A modified brightness control level is determined for the first pixel that results in an actual brightness for the first pixel in the presence of pixel interdependence effect, which more closely approximates the actual brightness that would result from the un-modified first brightness control level in the absence of pixel interdependence effect.
Claims15
A method for reducing pixel interdependence distortion, comprising:
- estimating a pixel interdependence effect upon a first pixel at a first brightness control level as caused by at least one adjacent pixel at a second brightness control level;
- and
- responsive to said estimating step, modifying said first brightness control level for said first pixel to compensate for said pixel interdependence effect.
A system for reducing pixel interdependence errors in an imager caused by adjacent pixel drive interdependence comprising:
- an estimator for estimating the pixel interdependence effect upon a first pixel at a first brightness control level as caused by at least one adjacent pixel at a second brightness control level;
- and
- an iterative adjustment stage responsive to said estimator for modifying said first brightness control level for said first pixel to compensate for said pixel interdependence effect.
The system according to claim 9 wherein said estimator calculates an estimated pixel brightness control level that would result in an actual brightness for said first pixel in the absence of said pixel interdependence effects, that is equal to the actual brightness that would result from said first pixel brightness control level in the presence of said pixel interdependence effect.
The system according to claim 12 wherein said estimator scales said difference by a pixel interdependence function.
The system according to claim 13 wherein said pixel interdependence function is a simple linear function.
Dependencies are inferred from the claim text.