Four experiments investigated the hypothesis that different attributes of a visual scene are processed by independent channels working asynchronously. Experiment 1 considered the attributes of colour, form, and movement of simple geometrical configurations. In each of three conditions, two of these attributes switched simultaneously between two fixed values (Green/Red, Circle/Square, Fixed/Movi...

The same scene viewed under two diierent illuminants induces two diierent colour images. If the two illuminants are the same colour but are placed at diierent positions then corresponding rgb pixels are related by simple scale factors. In contrast if the lighting geometry is held xed but the colour of the light changes then it is the individual colour channels (e.g. all the red pixel values or ...

Colour changes, such as kiln brown stain, that develop in Pinus radiata boards during kiln drying can reduce the value of the final wood products and result in significant losses due to downgrade or waste of dried wood by removing the darkened surfaces. This study measured how colour developed in Pinus radiata sapwood boards under different drying schedules. The boards used in these experiments...

Disc accreting neutron stars come in two distinct varieties, atolls and Z sources, named after their differently shaped tracks on a colour-colour diagram as the source luminosity changes. Here we present analysis of three transient atoll sources showing that there is an additional branch in the colour-colour diagram of atoll sources which appears at very low luminosities. This new branch connec...

The time needed to detect changes in colouration of a single moving stimulus becomes shorter with its velocity (Kreegipuu, Murd, & Allik, 2006). In this study we examined ability to detect colour changes in moving chromatic bars and gratings using two tasks: temporal order judgement and reaction time tasks. In addition visual evoked potentials elicited by the change of colour were registered. T...

Illumination in natural scenes changes at multiple temporal and spatial scales: slow changes in global illumination occur in the course of a day, and we encounter fast and localised illumination changes when visually exploring the non-uniform light field of three-dimensional scenes; in addition, very long-term chromatic variations may come from the environment, like for example seasonal changes...

800x600 congenital colour vision defects affect about 8% and 0.5% of the male and female population, respectively. pseudoisochromatic ishihara plates have shown to be successful in an early diagnosis of colour vision defects. this commonly used colour vision test was initially intended to identify those who suffered from red-green aspect of congenital colour blindness; however, it may be of use...

The flipped classroom is an educational strategy about inverting the traditional use of in-class time for conducting lower-level learning activities and out-of-class time for conducting higher-level learning activities. Guided social inquiry learning (GSIL), which is a scaffolded constructivist pedagogic approach, has been conventionally adopted in learning and teaching of Liberal Studies (a “y...

A 2D coordination polymer can exchange guest species from liquid sorption, with accompanying visible colour changes.