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US 7,254,278 B2Granted
Digital image processing method
AssigneeKoninklijke Philips Electronics N.V.
InventorJoel Jung
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AssigneeKoninklijke Philips Electronics N.V.
InventorJoel Jung
Estimating the term…
The present invention relates to a method of post-processing a digital image (Im) comprising pixels, said digital image being encoded and decoded according to a technique of coding by blocks of pixels. Said method comprises a classification step (6) intended to allocate a class (Cli) to a block (Bj) of pixels of said digital image, a step of evaluating the degradation (5) of said digital image delivering a degradation measurement (DM) of said digital image, a filter selection step (9) intended to associate a filter (F1) with a pair of adjacent blocks (Bj, Bk) according to their respective classes (Clm, Cln) and the degradation measurement (DM) of said digital image, a filtering decision step (8) intended to deliver a filtering decision (Dec) for a pair of adjacent blocks (Bj, Bk) according to the degradation measurement (DM) and a filtering step (11) intended to filter a pair of adjacent blocks (Bj, Bk) by means of its associated filter (F1) delivering a filtered digital image (ImF). The advantage of such a method is that it is both of low complexity and very effective.
A method for the post-processing of a digital image (Im) comprising pixels, said digital image being encoded and decoded according to a pixel-block coding technique, said method comprising a classification step (6) delivering classes (Cli), a step of evaluating the degradation (5) of said digital image delivering a degradation measurement (DM) of said digital image and a filtering step (11) delivering a filtered digital image (ImF), wherein:
A device for the post-processing of a digital image (Im) comprising pixels, said digital image being encoded and decoded according to a technique of coding by blocks of pixels, said device comprising classification means (6) delivering classes (Cl1), means of assessing the degradation (5) of said digital image (Im) delivering a degradation measurement (DM) of said digital image and filtering means (11) delivering a filtered digital image (ImF), wherein:
A computer readable storage medium having code for post-processing a digital image encoded and decoded according to a block coding technique, said computer readable storage medium comprising:
Dependencies are inferred from the claim text.