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Subject : [Anaglyphs] Re: [3dXchange] Greg and everyone else / Spring is finally here!
From : Raymond Dondzila
To : 3D-StereoviewXchange(-at-)yahoogroups.com
Date : Thu, 25 Apr 2013 13:04:01 -0700 (PDT)


 

Thanks for your comments, Greg. Your remarks and the remarks of others really raised my curiosity. Everyone was seeing ghosting. I was seeing none. I put the image on my wife's computer. ...No ghosting. I put the image on my office computer. ...No ghosting.  I put the image on my netbook. ...No ghosting. None whatever. I looked at my glasses. They looked red/cyan. I dug out some older glasses and compared them to my current glasses. While there appeared to be some difference in density, they looked close. Even so, I viewed the flower image with the older glasses, and lo and behold, there was significant ghosting. I was viewing the image through red/blue glasses all along. So, I tried to adjust the image to conform to the red/cyan glasses, and I was not able to eliminate the ghosting for that pair.
So now my question is "why are we using red/cyan glasses when the ghosting is so difficult to eliminate?" Although color cannot be used when using red/blue glasses, the ghosting can totally be dealt with. Since the use of red/cyan glasses outnumbers red/blue glasses, there must be a good reason. But if red/cyan glasses are only used to accommodate the use of color images, I think that we are missing out on some pretty good stereo images. Thinking further on the subject, we are taking a perfect color image, making it imperfect and degrading and changing the color in order to make it work in an imperfect stereo format. Seems silly. I know that I must be in the minority with my thoughts, but that is just my humble opinion. I would love to hear the pros and cons of others on this topic. Why are we not using red/blue glasses more? Maybe you can change my mind.
Thanks for reading this somewhat of a "ranty" discord.
Ray

--- On Thu, 4/25/13, Greg Hjellen <greghj(-at-)yahoo.com> wrote:

From: Greg Hjellen <greghj(-at-)yahoo.com>
Subject: Re: [3dXchange] Ray / Spring is finally here!
To: "3D-StereoviewXchange(-at-)yahoogroups.com" <3D-StereoviewXchange(-at-)yahoogroups.com>
Date: Thursday, April 25, 2013, 12:41 PM

 

Nice one Ray. Love the Xview. To me the anaglyph has some ghosting. I notice your "blue" is very blue vs cyan. So, I switched to red/blue
glasses (vs my normal red/cyan) and the blue-associated ghosting around the flower reduced (but not the red-associated). Ghosting around the frame was still significant to me - a white frame against a black background with lots of deviation can be a problem!!
Greg



From: Raymond Dondzila <rmd1943(-at-)yahoo.com>
To: 3D-StereoviewXchange(-at-)yahoogroups.com
Sent: Thursday, April 25, 2013 7:21 AM
Subject: [3dXchange] Spring is finally here!

 
In this image, I was experimenting with dealing with ghosting. I learned a few things, but the final image sure looks different from "normal" anaglyphs. ...Very magenta. Please be frank on commenting. I am not very good at this yet. I see very little ghosting on my monitor, but maybe that is not the case on your equipment. For this group, I have included both the anaglyph and the cross-view.
Thanks for looking
Ray



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