Results 21 to 30 of about 17,223,689 (245)

A distributed code for colour in natural scenes derived from centre-surround filtered cone signals

open access: yesFrontiers in Psychology, 2013
In the retina of trichromatic primates, chromatic information is encoded in an opponent fashion and transmitted to the lateral geniculate nucleus (LGN) and visual cortex via parallel pathways.
Christian Johannes Kellner   +4 more
doaj   +1 more source

A Novel No-Reference Quality Assessment Metric for Stereoscopic Images with Consideration of Comprehensive 3D Quality Information

open access: yesSensors, 2023
Recently, stereoscopic image quality assessment has attracted a lot attention. However, compared with 2D image quality assessment, it is much more difficult to assess the quality of stereoscopic images due to the lack of understanding of 3D visual ...
Liquan Shen   +4 more
doaj   +1 more source

Phase synchrony facilitates binding and segmentation of natural images in a coupled neural oscillator network

open access: yesFrontiers in Computational Neuroscience, 2014
Synchronization has been suggested as a mechanism of binding distributed feature representations facilitating segmentation of visual stimuli. Here we investigate this concept based on unsupervised learning using natural visual stimuli.
Holger eFinger   +2 more
doaj   +1 more source

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

Automatic image orientation determination with natural image statistics [PDF]

open access: yes, 2004
In this paper, we propose a new method for automatically determining image orientations. This method is based on a set of natural image statistics collected from a multi-scale multi-orientation image decomposition (e.g., wavelets). From these statistics,
Lyu, Siwei, Siwei Lyu
core   +1 more source

Visual Representation Determines Search Difficulty: Explaining Visual Search Asymmetries

open access: yesFrontiers in Computational Neuroscience, 2011
In visual search experiments there exist a variety of experimental paradigms in which a symmetric set of experimental conditions yields asymmetric corresponding task performance.
Neil eBruce, John eTsotsos
doaj   +1 more source

Blind Image Quality Assessment of Natural Scenes Based on Entropy Differences in the DCT Domain

open access: yesEntropy, 2018
Blind/no-reference image quality assessment is performed to accurately evaluate the perceptual quality of a distorted image without prior information from a reference image.
Xiaohan Yang   +3 more
doaj   +1 more source

Reconstruction of natural images from responses of primate retinal ganglion cells

open access: yeseLife, 2020
The visual message conveyed by a retinal ganglion cell (RGC) is often summarized by its spatial receptive field, but in principle also depends on the responses of other RGCs and natural image statistics.
Nora Brackbill   +6 more
doaj   +1 more source

Temporal adaptation enhances efficient contrast gain control on natural images. [PDF]

open access: yesPLoS Computational Biology, 2013
Divisive normalization in primary visual cortex has been linked to adaptation to natural image statistics in accordance to Barlow's redundancy reduction hypothesis.
Fabian Sinz, Matthias Bethge
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

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