Method for correcting artefacts in a digital image

   
   

A method of correcting artefacts in a processed digital image represented by a multi-scale gradient representation being obtained by non-linear processing of a multi-scale gradient representation of an original image. A modified gradient representation is generated by modifying gradient images of the multi-scale gradient representation of the processed image so that the directions of the gradient images are pixel-wise equal to those of the gradient images of the multi-scale gradient representation of the original image. A reconstruction algorithm is then applied to the modified gradient representation.

Um método de corrigir artefacts em uma imagem digital processada representada pelo multi-escala a respresentação do gradient que está sendo obtida processar non-linear do multi-escala a respresentação do gradient de uma imagem original. Uma respresentação modificada do gradient é gerada modificando imagens do gradient do multi-escala a respresentação do gradient da imagem processada de modo que os sentidos das imagens do gradient sejam igual pixel-sábio àqueles das imagens do gradient do multi-escalem a respresentação do gradient da imagem original. Um algoritmo do reconstruction é aplicado então à respresentação modificada do gradient.

 
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