1 October 1998 Structure-adaptive evaluation of additive noise level in images
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Abstract
In the proposed paper, the problem of noise evaluation is considered with application to image filtering and segmentation. The underlying structural model of original image is considered which describes the shape of image objects or their parts. The distinctive feature of the presented model is the separate modeling of object's planar shape as well as the image intensity function. For the intensity function model of original image, a piecewise polynomial model of low degrees (up to the second one) is considered. Then, noise to be evaluated is treated in a broad sense, namely as the intensity residuals of the piecewise polynomial modeling. It is also assumed that most of the pixels satisfy the polynomial model except for a relatively small number of edge points between homogeneous regions and fine details. A robust noise variance estimator is proposed for the images corrupted by outliers, i.e. impulsive noise.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Iryna B. Ivasenko, Iryna B. Ivasenko, Roman M. Palenichka, Roman M. Palenichka, } "Structure-adaptive evaluation of additive noise level in images", Proc. SPIE 3460, Applications of Digital Image Processing XXI, (1 October 1998); doi: 10.1117/12.323159; https://doi.org/10.1117/12.323159
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