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Rationale
Measures to Prevent CVS ( computer vision syndrome )
Current researches proved that premature Presbyopia can occur in children using computers , and the major factors contributing to its development is ciliary muscles stain along with a bright back-light .
1. Children tend to sit at a nearer position
2. Tends to lean forward when using computers .
The first thing that can be done is to make them sit at a sufficient distance and angle , adjust the illumination in the room and the monitor's brightness , care the wind flow , practice frequent eye blinking and relaxation ( software are available to help in practising frequent eye blinking ) .
Anyway monitoring the user's distance from the screen may also be required .
This can be done through a web cam ( as described below ) and in case of insufficient distance from screen , an alert can be displayed .
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nikgare
wrote on the 12 Jan 10 at 19:54
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Which research?
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VS
wrote on the 13 Jan 10 at 04:51
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I think Mayo Clinic (MFMER).
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In Solution 1, what happens if you turn your head a bit? Presumably the software assumes you're actually further away and tries to compensate?
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DrG
(Idea reviewer)
wrote on the 13 Jan 10 at 15:34
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@ Nickedynick - Good . Slight turning of the face will not affect solution 1 .
The shape recognised will be bilaterally symmetrical when you look straight this will be distorted when you turn the head . Turn on your web cam and take two snaps , one straight and one head turned 45 deg ; . Facial shape recognition considers the face as a whole and then locates eyes . Also see - Intel® Integrated Performance Primitives for Linux* .
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DrG
(Idea reviewer)
wrote on the 13 Jan 10 at 17:53
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Face turning how ever will be good in any case. Because
1. When turning head , the distance between the eye only decreases from the reference image .
2. Normally , when looking at the monitor , users the face is straight .
So,
1. when one is near the monitor , computer warns.
2. When , one is near the monitor and looking at another direction , (and if the symmetry detection ability is not implemented and face is turned to a considerable extent ) , the distance calculated by solution 1 considers the used as at a far distance and will not display alert . So there will be no alert for a user near the monitor but reading a book placed on one side .
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Good explanation, I just assumed that the software would be tracking purely the eyes - obviously I was wrong!
I like this idea though, there could be a realistic chance of implementing it if the face detection login idea that was bouncing around a while ago ever sees the light of day again.
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DrG
(Idea reviewer)
wrote on the 14 Jan 10 at 04:35
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@ Nickedynick - face detection login is available in Windows and works well .
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I didn't know that, but I was reffering to talk before Jaunty (?) of using it for Ubuntu.
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how will this effect one with a vison impairment that might be closer to the screen that another user?
some times my vision will blur a bit after a short time at the screen. This maybe due to the contrast and brightness set wrong.
brightness 60
contrast 30
phase 68
I do how ever have a very narrow field of view, the reason unknown.
maybe a wizard that gives room examples. ie how much light is in said room and then tells the user what mgiht be good settings for their monitor.
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DrG
(Idea reviewer)
wrote on the 26 Jan 10 at 13:43
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@tommynz1975 - You may be having accommodative inertia . This is how ever not related to brightness/contrast .More related to ciliary muscles and lens . ? any lens problem.
Anyway , the settings , in soln#1 , will be configurable . Sit at a distance that you think good then set the optimum distance . The alert will be shown in a distance less than this configured value ?
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