Go Back   Computer Forums > Welcome To Computer Forums .org > Social Lounge | Off Topic
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-05-2005, 06:24 AM   #1
Golden Master
 
ArrizX's Avatar
 
Join Date: Apr 2005
Posts: 16,073
Send a message via MSN to ArrizX
Default The human eye, and frames per second.

Here is the link, you may or may not find this internesting. I however liked it.
http://www.newton.dep.anl.gov/askasc...1/gen01025.htm

And if u dont wanna click the link. here you go.
__________________________________________________ ______________


Question - Some guy I keep talking to argued with me that the eye
can only see an equivilency of 24 frames per second. But I do not think
that's a fact. When I rotate a sprite at 60 or 80 fps it is quite
different than that of 40 or 30 fps.

Can someone clear this up for me? Thanks.
----------------------------------------
When an image strikes the retina the nerve impulses last approximately
1/25 sec. This is why motion pictures appear to move continuously, even
though the number of frames/sec. is not extremely fast. This is also why a
TV screen does not flicker. If you have seen some "old time movies" from the
20's and 30's they appear "jerky" because at the time the technology did not
allow for frames to appear quickly enough to "fool" the eye, and the eye was
able to resolve successive frames.

There is another effect that may be coming into play also, and that is a
"strobe" effect. A strobe light flickers very short pulses of light at
variable controlled speeds. If some object is rotating in front of the light
at some multiple of the pulse speed, it will appear to stand still. If the
strobe light is speeded up or slowed down slightly the image will appear to
move forward or backward slowly.


<EDIT>
Just found this http://www.100fps.com/how_many_frame...humans_see.htm
and this
http://en.wikipedia.org/wiki/Frame_rate
and....
http://www.cs.ucl.ac.uk/research/hig...eo_quality.pdf
this is cool all in its self....
http://reviews.cnet.com/Labs/4520-6603_7-5020816-2.html
last thing for tonight...
http://www.sharkyextreme.com/feature...le.php/1273571
__________________

__________________
. ()()()()
./l ,[_\_\ ],
l---L ()lllllll()-
()_) ()_)--o-)_)
ArrizX is offline   Reply With Quote
Old 11-05-2005, 07:23 AM   #2
Fully Optimized
 
dyserq's Avatar
 
Join Date: Jul 2005
Posts: 2,281
Default Re: The human eye, and frames per second.

Interesting ... i never thought of my eye having a frame per second scale ... wow ... only 25 frames per second, technology has easily achieved a hundred frames per second rates
__________________

dyserq is offline   Reply With Quote
Old 11-05-2005, 07:33 AM   #3
Golden Master
 
ArrizX's Avatar
 
Join Date: Apr 2005
Posts: 16,073
Send a message via MSN to ArrizX
Default Re: The human eye, and frames per second.

yeah no kidding.
__________________
. ()()()()
./l ,[_\_\ ],
l---L ()lllllll()-
()_) ()_)--o-)_)
ArrizX is offline   Reply With Quote
Old 11-05-2005, 08:14 AM   #4
Daemon Poster
 
Lac3y's Avatar
 
Join Date: Oct 2005
Posts: 1,110
Send a message via MSN to Lac3y
Default Re: The human eye, and frames per second.

Yeah, I was the one who thought that.

But I did some research and found that it is untrue:

http://amo.net/NT/02-21-01FPS.html
__________________
Intel Core 2 Duo E8400 @ 3.7GHz
4GB OCZ PC-6400 RAM
Samsung Spinpoint 1TB HDD
ATI Radeon HD4890 with VoltageTweak
OCZ Stealth XStream 600w PSU
Lac3y is offline   Reply With Quote
Old 11-05-2005, 10:40 AM   #5
Site Team
 
David Lindon's Avatar
 
Join Date: Dec 2002
Posts: 15,233
Default Re: The human eye, and frames per second.

I always though it didn't work in 'frames'

Yes 1 light 'input' may only last 1/25 of a second but that does not mean that all 'inputs' hit the same time.

For example about the sprite, they may see the first part of the sprite and then the next part like 0.001 seconds later and the next part 0.002

therefore there are not 'frames' things are registered as and when they happen
__________________
[url=http://www.LNXPS.NET]LNXPS.NET - The XPS Library]
David Lindon is offline   Reply With Quote
Old 11-05-2005, 12:29 PM   #6
Daemon Poster
 
yellowsnowman's Avatar
 
Join Date: Nov 2004
Posts: 559
Send a message via AIM to yellowsnowman
Default Re: The human eye, and frames per second.

it could be true, take this for example:

open up a book to any page, start reading it, then suddenly flick your eyes to somewehre else in your area, you may not notice it but you are blind for a very very miniscule time, thus showing that the eye doesn't have that many fps.
yellowsnowman is offline   Reply With Quote
Old 11-05-2005, 02:39 PM   #7
Fully Optimized
 
Paradox's Avatar
 
Join Date: Aug 2005
Posts: 2,913
Send a message via AIM to Paradox Send a message via MSN to Paradox Send a message via Yahoo to Paradox
Default Re: The human eye, and frames per second.

Well I dont believe there is a set one. That might have been on certain people. Everyone is different though.. *shrug* Can we ever really know everything about the human body?
__________________
ROW ROW FIGHT THE POWAH

Xbox Live: Error Lord
Personal Email: HunterMRose[at]gmail.com
Aim: Error Lord
Paradox is offline   Reply With Quote
Old 11-05-2005, 03:14 PM   #8
Golden Master
 
Kage's Avatar
 
Join Date: Nov 2004
Posts: 13,873
Send a message via MSN to Kage
Default Re: The human eye, and frames per second.

Lac3y's article hit the bullet with me, and I can say that its probably true.

I mean if you look at the real world (not exactly in refresh rates of course), it is alot clearer and flicker free (of course) than a computer monitor at any refresh rate given at the moment.
That proves it really, doesn't it?

YellowSnowman, you did get to a good point about books and the fact of the imge staying there, but white bright light tends to. It doesn't mean we can't see that much FPS. It just that the light stays bouncing in our eyes for longer, so our brain is still seeing it.
__________________
Abit IP35 Pro / Q6600 G0 / Zalman 9700 / 8800GTS 640mb / 4x 2GB Corsair XMS / X-FI Xtreme M / 1x 1TB / Antec 900 / Logitech Z-5500 / Samsung 20inch
Kage is offline   Reply With Quote
Old 11-05-2005, 03:48 PM   #9
Golden Master
 
ArrizX's Avatar
 
Join Date: Apr 2005
Posts: 16,073
Send a message via MSN to ArrizX
Default Re: The human eye, and frames per second.

Quote:
Originally Posted by Lac3y
Yeah, I was the one who thought that.

But I did some research and found that it is untrue:

http://amo.net/NT/02-21-01FPS.html
damn thats alot to read. good work finding it tho, lol, ill read it later tonight.
__________________
. ()()()()
./l ,[_\_\ ],
l---L ()lllllll()-
()_) ()_)--o-)_)
ArrizX is offline   Reply With Quote
Old 11-05-2005, 03:48 PM   #10
Fully Optimized
 
Nik00117's Avatar
 
Join Date: May 2005
Posts: 4,025
Send a message via AIM to Nik00117 Send a message via MSN to Nik00117 Send a message via Yahoo to Nik00117
Default Re: The human eye, and frames per second.

Um, TV runs at 27 FPS on cartoons which is slower then real poeple moving. So um, you can't see every little screen meaning you are seeing slower then you are watching.
__________________

__________________
Main Rig: I7 920 CPU, 6 Gigs ram 5870 GPU
M17X Laptop 2.8 Ghz Dual Core, 4870 Radeon
Nik00117 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 12:26 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0