After looking at the PDF posted by epstewart,http://www.avsforum.com/avs-vb/showt...&page=61&pp=30
I googled some of the topics listed in the PDF, and have written a few emails based on that... I've received a reply from a NASA scientist who is being gratious enough to allow me to place his quote and some links. He then gave me two replies.. first his thoughts, the a second permission to post and include some links. His name is Andrew Watson.http://vision.arc.nasa.gov/personnel/watson/watson.html
First, my question:Hello,
I recently came across your paper entitled "Flat Panel Display Defect Measurement Using a Human Vision Model"
and was fascinated in that there is a growing number of LCD HDTV Panels of various makes, which are being reported with this issue. Most recently, a number of Sony LCD owners have been attempting to get some of this resolved with Sony, who claim there is nothing wrong with the panels and that they are normal. The cases run from mild to severe, and people claim that various actions somewhat help, etc. Certainly some of the settings can help.
If you have some time, you opinion of the following thread would be greatly appreciated. It is a place where many Audio/Video enthusiasts are discussing the problem.
Jay S.Andrew's Replies
Without a formal arrangement, I can't devote the time to a careful study of this problem, but I would make the following points:
1. No screen, lcd, plasma, crt, lcos, etc., is uniform. All have variations/blemishes on various scales. So the question is not whether a display has non-uniformities, but rather how visible they are, and whether they are so far outside the normal range as to be considered "defective."
2. Viewing pictures of screens, which tends to present the screen in a greatly minified form, can paradoxically increase the visibility of large, slowly varying non-uniformities. Technically, this is because the eye is more sensitive to mid than to very low spatial frequencies. This tends to make the artifacts look much worse in a picture than they do in the world.
3. Pictures also tend to distort the grayscale range, which can make artifacts look worse.
4. This debate illustrates the need for objective methods of measuring the visibility of screen artifacts. We do have such a technique (the Spatial Standard Observer). Anyone interested in licensing the technique could contact me.His Second Reply
Yes you can quote me, and you can use my name. If folks are interested in the Spatial Standard Observer, the paper is online athttp://vision.arc.nasa.gov/publicati...6-sid-31-1.pdf
and the science behind it is ithttp://journalofvision.org/5/9/6/
So, some take aways from this... Apparently there are no uniform sets, it is a matter of degrees of the problem.. pictures can distort the view (we knew this), the eye is more sensitive.. This along with some of the posts put up by epstewart also point to a need to standardize on how to check for this during manufacture or assembly... If nothing else, we are getting very educated..