Method, apparatus and computer program for adaptive compensation of a mtf
AssigneeOce-Technologies B.V.
InventorsNicolas P. M. F. Bonnier, Albrecht J. Lindner
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Abstract
A method and system for adaptively compensating for the printer MTF. The MTF compensation applied locally depends on the local mean: Several compensated High-pass images are computed for different mean values. Then locally, depending on the value of the low-pass band, one compensation high-pass value is selected for the final result.
Claims11
A method for preparing an image for printing on a printing device having a particular MTF in order to compensate for the MTF, said method comprising the steps of:
- adaptively compensating for the printer MTF, by applying MTF compensation in dependence of a first variable;
- calculating N compensated images for N values of the first variable;
- and
- for each value of a second variable, the first variable being dependent of the second variable, determining a compensated value for the image according to the actual value of the first variable and the calculated N compensated images.
A system for preparing an image for printing on a printing device having a particular MTF in order to compensate for the MTF by mapping an original image from a source gamut color subsystem to a destination gamut color subspace belonging to a certain output device and having a particular MTF, wherein the system comprises:
- a filter for decomposing the original image in several bands, yielding at least a low pass image and a high pass image;
- a MTF compensation component for adaptively compensating for the printer MTF, by applying MTF compensation locally, in dependence of a local mean;
- and
- an adaptive merging and mapping component for merging and mapping the MTF compensated high pass image and the low pass image yielding an output image.
11-15. (canceled)
Dependencies are inferred from the claim text.