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Community Tip - Visit the PTCooler (the community lounge) to get to know your fellow community members and check out some of Dale's Friday Humor posts! X

Image LCD Display

ptc-1368288
1-Newbie

Image LCD Display

LCD (17") display area [14.125*11.375] = 1280*1024
LCD pixels [1280*1024] = 1 310 720
per "� (inch�) to display object [1310720/160.672] = 8192
Downsampling ratio to display object [125000/8192] = 15.3

The normal human eye resolution is 10 lines/mm�,
i.e: times 2 in terms of BW resolution,
@ a contrast level 10% < contrast < 15%
Most camera meet the human eye resolution in term of their pixel resolution, what it means is that no matter the camera resolution vs the human eye resolution as they meet natively, the downsampling of the object has destroyed all possible details as they are displayed that would otherwise be available for your enjoyment ! In other words, the displayed object displays only 1 out of 15 pixels available ... peddling a tin of air to the "cave man" ... air from his own cave !

Past the downsampling, filtering/crisping ... do tend to replease the viewer, but 14 pixels are lost and NONE is then original.

Let's take the camera technology capable of let's say 3 times the resolution of the human eye and the LCD technology 15 times less in resolution ... can we conclude that the user in in default of 45 times the $ spent. Or otherwise is 45 "unit distance" in technology between both ends ? How would Watson report that frustration ?

jmG
1 REPLY 1

... to appreciate the technological joke further, the only not true RGB pixel displayed by each LCD little square can have 256� color levels ... The pixel displayed is not true but so much colored ! What a non sense. That's why a very good 256 color reduction is about same to the eye as the full 17 millions colors. I compare that to ... going to the paint store and asking for green paint with red peas. Expect the salesman reply: sorry sir, we have sold the last pot yesterday.

jmG
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