نتایج جستجو برای: colour changes

تعداد نتایج: 902158  

Journal: :Biology letters 2007
David Wilson Robert Heinsohn John A Endler

Ontogenetic colour change is typically associated with changes in size, vulnerability or habitat, but assessment of its functional significance requires quantification of the colour signals from the receivers' perspective. The tropical python, Morelia viridis, is an ideal species to establish the functional significance of ontogenetic colour change. Neonates hatch either yellow or red and both ...

Journal: :Perception 2005
Sérgio M C Nascimento Vasco M N de Almeida Paulo T Fiadeiro David H Foster

The effect of scene complexity on colour constancy was tested with a novel technique in which a virtual image of a real 3-D test object was projected into a real 3-D scene. Observers made discriminations between illuminant and material changes in simple and complex scenes. The extent of colour constancy achieved varied little with either scene structure or test-object colour, suggesting a domin...

2016
Lucas Wilkins N. Justin Marshall Sönke Johnsen D. Osorio

This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and all moral rights to the version of the paper presented here belong to the individual ...

2015
Lisa K. Harder Vladimir Galindo-Zamora Martin Beyerbach Ingo Nolte Patrick Wefstaedt

BACKGROUND Canine intervertebral disc degeneration can lead to intervertebral disc disease. Mild degenerative changes in the structure of the canine intervertebral disc can be identified in magnetic resonance images, whereas these changes are not visible in computed tomographic images. Therefore, one aim of this study was to detect whether colour-coded computed tomography enhances the visibilit...

Journal: :Vision Research 1996
Maria Devos Werner Spileers Geoffrey Arden

The influence of congenital colour defects on a clinical computer test for equiluminous colour discrimination is studied. Differences in relative spectral sensitivity and changes in colour contrast discrimination are two distinct manifestations of the abnormal genes responsible for congenital red-green defects. The very simple and rapid method of the heterochromatic flicker brightness test acts...

Journal: :Theoretical population biology 2007
David A Vasseur

Noise in environmental variables is often described as 'coloured', where colour describes the exponent beta of the scaling relationship between the amplitude of variability and its frequency of occurrence (1/f(beta)). Different environments are known to have different colours and models have shown that colour can have important impacts upon population persistence and dynamics. This study advanc...

2008
Ferenc Szabó Peter Bodrogi János Schanda

Colour harmony was investigated using direct visual observations of computer simulated displays and compared with predictions of different colour harmony theories. Ou and Luo [1] constructed a model of colour harmony (CH formula) based on a harmony pair comparison experiment. The present paper compares our results with harmony predictions of the CH formula, and of colour harmony models based on...

2010
Kinjiro Amano David H. Foster

How well can categorical colour perception be maintained in natural environments with varying illuminants? To address this question, a colour-naming experiment was performed with colour-monitor images of natural scenes simulated under two different daylights of correlated colour temperature 6500 K and 25000 K. Images were obtained from a set of hyperspectral data to enable the accurate control ...

Journal: :Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians 2013
Frances J Rucker

PURPOSE At birth most, but not all eyes, are hyperopic. Over the course of the first few years of life the refraction gradually becomes close to zero through a process called emmetropisation. This process is not thought to require accommodation, though a lag of accommodation has been implicated in myopia development, suggesting that the accuracy of accommodation is an important factor. This rev...

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