Results 21 to 30 of about 550,068 (301)

No-Reference Image Quality Assessment with Global Statistical Features

open access: yesJournal of Imaging, 2021
The perceptual quality of digital images is often deteriorated during storage, compression, and transmission. The most reliable way of assessing image quality is to ask people to provide their opinions on a number of test images.
Domonkos Varga
doaj   +1 more source

Robust statistics for image deconvolution [PDF]

open access: yesAstronomy and Computing, 2017
We present a blind multiframe image-deconvolution method based on robust statistics. The usual shortcomings of iterative optimization of the likelihood function are alleviated by minimizing the M-scale of the residuals, which achieves more uniform convergence across the image.
Matthias A. Lee   +3 more
openaire   +2 more sources

Physics And Statistics Of Medical Imaging [PDF]

open access: yesSPIE Proceedings, 1989
Extraordinary progress has been made over the last two decades in the development and dissemination of new medical imaging technologies. The development of computed tomography, positron emission tomography, and magnetic resonance imaging, as well as major innovations to the conventional imaging modalities, have revolutionized medical diagnostic imaging.
D G, Brown, R F, Wagner
openaire   +2 more sources

Visual Discomfort and Variations in Chromaticity in Art and Nature

open access: yesFrontiers in Neuroscience, 2021
Visual discomfort is related to the statistical regularity of visual images. The contribution of luminance contrast to visual discomfort is well understood and can be framed in terms of a theory of efficient coding of natural stimuli, and linked to ...
Olivier Penacchio   +5 more
doaj   +1 more source

A statistical model for contours in images [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2004
In this paper, we describe a statistical model for the gradient vector field of the gray level in images validated by different experiments. Moreover, we present a global constrained Markov model for contours in images that uses this statistical model for the likelihood.
François Destrempes, Max Mignotte
openaire   +2 more sources

Fast image completion method using patch offset statistics

open access: yes, 2022
S.1795-1799Image completion is a technique that involves repairing damaged images or filling in missing regions in a visually pleasing manner. In this work, a novel fast image completion approach is proposed, which finds the best textures to be filled ...
Köppel, M.   +3 more
core   +1 more source

Human Texture Vision as Multi-Order Spectral Analysis

open access: yesFrontiers in Computational Neuroscience, 2021
Texture information plays a critical role in the rapid perception of scenes, objects, and materials. Here, we propose a novel model in which visual texture perception is essentially determined by the 1st-order (2D-luminance) and 2nd-order (4D-energy ...
Kosuke Okada, Isamu Motoyoshi
doaj   +1 more source

Classical Statistics and Statistical Learning in Imaging Neuroscience [PDF]

open access: yesFrontiers in Neuroscience, 2017
Published by Frontiers Research Foundation ...
Danilo Bzdok, Danilo Bzdok, Danilo Bzdok
openaire   +5 more sources

Rat sensitivity to multipoint statistics is predicted by efficient coding of natural scenes

open access: yeseLife, 2021
Efficient processing of sensory data requires adapting the neuronal encoding strategy to the statistics of natural stimuli. Previously, in Hermundstad et al., 2014, we showed that local multipoint correlation patterns that are most variable in natural ...
Riccardo Caramellino   +5 more
doaj   +1 more source

Natural Image Statistics for Natural Image Segmentation [PDF]

open access: yesInternational Journal of Computer Vision, 2003
Building on recent progress in modeling filter response statistics of natural images we integrate a statistical model into a variational framework for image segmentation. Incorporated in a sound probabilistic distance measure the model drives level sets toward meaningful segmentations of complex textures and natural scenes.
Heiler, Matthias, Schnörr, Christoph
openaire   +3 more sources

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