| 摘要 |
FIELD: physics; image processing. ^ SUBSTANCE: invention relates to processing digital images, particularly, for reducing distortions. A method is proposed for enhancing digital images, involving analysis of image parametres with subsequent extraction of brightness components, construction of a correcting filter and image correction. Images with distortions, superimposed with previous corrections, are corrected without use and analysis of parametres of the original image. Construction of the correcting filter is done on an averaged projection profile with construction of a set of local projections of brightness of the image in the direction defined by the gradient on the selected sections. The image is corrected by selecting pixels of the image in the local region, neighbouring the edges, except pixels directly on the edges. The selected sections are corrected using the constructed correcting filter with regulation of weight coefficients of the filter on local values of the gradient amplitude. ^ EFFECT: efficient reduction and removal of distortions in digital images with superimposed distortions. ^ 6 dwg |
