Question of the Day
The human eye can see a hundred shades of grey.
The human eye can detect different shades of grey depending on its brightness. 1% of brightness is enough for the human eye to recognise a different shade.  More »
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Web Results
www.ncbi.nlm.nih.gov/pmc/articles/PMC3043920/
29 Dec 2006 ... In other words, how many grayscales can a human observer see in ... The Barten model is based on experimental data in which the eye is ...
www.dentalxrays.info/blog/more-50-shades-grey
13 Jun 2012 ... Furthermore, the actual number of meaningful shades of grey is difficult to ... on the human observer as much as the quality of the actual image. The human vision can only distinguish between 32-64 shades of grey at any time ...
forums.anandtech.com/showthread.php?t=1761980
2.6 How many gray levels can the eye distinguish? ... Both the size of human brightness JND?s and the screen gamma change with viewing ...
... CO2 reduction; 1.4 Which Insect is this ? 1.5 How many shades of gray can the human eye see? 1.6 Which large predators can't see you if you don't move? More
Source: Wikipedia
faculty-web.at.northwestern.edu/med/fukui/Human%20eye.p...
30 Dec 2001 ... (See diagram for the structure of eye at the end of this chapter.) 1. ... Human eye can distinguish about 50 discrete shades of gray, corresponding to 6- to 7-bit ... Modern image sensor (photocathode) has a much higher QE.