منابع مشابه
A survey of warning colours of pesticides.
Pesticides are used to protect plants all over the world. Their increasing specificity has been due to utilization of differences in biochemical processes, and has been accompanied by lower human toxicity. Nevertheless cases of poisoning are still observed. While certain toxic substances are provided with characteristic dyes or pigments to facilitate easy identification, no overview of pesticid...
متن کاملSpotting Colours
Spotting an object of a chosen colour, skin for example, in an image taken under uncontrolled lighting conditions requires some form of preprocessing to convert the image colours to an illumination-independent specification. Computational colour constancy algorithms are designed specifically to accomplish this task. We process images with different colour constancy algorithms and evaluate the r...
متن کاملSegmenting memory colours
Memory colours refer to the colour of specific image classes that have the essential attribute of being perceived in a consistent manner by human observers. In colour correction -or renderingtasks, this consistency implies that they have to be faithfully reproduced; their importance, in that respect, is greater than other regions in an image. Before these regions can be properly addressed, one ...
متن کاملTensors, colours, octahedra
Several theorems in combinatorial convexity admit colourful versions. This survey describes old and new applications of two methods that can give such colourful results. One is the octahedral construction, the other is Sarkaria’s tensor method.
متن کاملThe Expressions of Colours
A whole world is presented in front of the eyes of a gamer. This world has shapes and colours. What do colours transmit? Is this considered in digital games? These are the main issues of this work. We are part of a culture which has been decanting meanings for ages, including those of colours. These coded meanings are shared connotations of feelings, sensations, atmosphere, thoughts, and moods....
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ژورنال
عنوان ژورنال: Nature
سال: 1891
ISSN: 0028-0836,1476-4687
DOI: 10.1038/045175a0