Abstract
This invention relates to a method for image enhancement, comprising a first step ( 41 ) of distinguishing blurred and non-blurred image portions of an input image, and a second step ( 42 ) of enhancing at least one of said blurred image portions of said input image to produce an output image. Said blurred and non-blurred image portions are for instance distinguished by comparing ( 416 ) the differences ( 415 ) between a linearly up-scaled ( 414 ) version of the down-scaled ( 411 ) input image and the input image, and the differences ( 413 ) between a non-linearly up-scaled ( 412 ) representation of the down-scaled input image and the input image. Said blurred image portion is for instance enhanced by replacing ( 42 ) it with a portion of a non-linearly up-scaled representation of the down-scaled input image. The invention also relates to a device, a computer program, and a computer program product.
| Original language | English |
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| Patent number | US20080025628 |
| Publication status | Published - 31 Jan 2008 |