منابع مشابه
Can Colour-Blind Distinguish Colour Palettes?
Let c : E(G) → [k] be a colouring, not necessarily proper, of edges of a graph G. For a vertex v ∈ V , let c(v) = (a1, . . . , ak), where ai = |{u : uv ∈ E(G), c(uv) = i}|, for i ∈ [k]. If we re-order the sequence c(v) non-decreasingly, we obtain a sequence c∗(v) = (d1, . . . , dk), called a palette of a vertex v. This can be viewed as the most comprehensive information about colours incident w...
متن کاملColour-blind Can Distinguish Colour Pallets
Let c : E → {1, . . . , k} be an edge colouring of a connected graph G = (V,E). Each vertex v is endowed with a naturally defined pallet under c, understood as the multiset of colours incident with v. If δ(G) > 2, we obviously (for k large enough) may colour the edges of G so that adjacent vertices are distinguished by their pallets of colours. Suppose then that our coloured graph is examined b...
متن کاملComputerised Simulation of Colour-blind and Colour Enhancement assisted Colour-blind
This paper presents the computerised simulation of colour-blindness and proposes a colour enhancement technique to aid colour-blinded people to use Visual Display Units (VDU). With the red-green colour perception difficulties, the ISH model has been used to develop the algorithms. The simulator and colour enhancement have been tested by colour-blind people and compared to existing simulators fo...
متن کاملAre dogs red–green colour blind?
Neurobiological and molecular studies suggest a dichromatic colour vision in canine species, which appears to be similar to that of human red-green colour blindness. Here, we show that dogs exhibit a behavioural response similar to that of red-green blind human subjects when tested with a modified version of a test commonly used for the diagnosis of human deuteranopia (i.e. the Ishihara's test)...
متن کاملCaution: coloured medication and the colour blind.
Colour is a good way to diff erentiate tablets and their containers because it enables more immediate recognition than do words printed on labels or embossed onto tablets. Moreover, patients with poor vision or those not wearing their reading glasses can have diffi culty reading print on labels or tiny low-contrast embossed text on tablets. However, 8% of men and 0·4% of women have impaired col...
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/331384d0