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Cross eyed to parallel

Started Apr 21, 2016 | Discussions thread
Joseph S Wisniewski Forum Pro • Posts: 35,462
JPS and PNS failed...

Athegn wrote:

I can view parallel images without any problem; I also have a parallel viewer (3D inlife??) so i can see large parallels on screen.

However most posts are cross eyed. I see on odd view; reversed front to back?

I can bring an image into Photoshop and swap the left and right but is there a way to swap within a browser?

There used to be, but I don't think there is, any more.

The standard for stereo images is a cross-eyed side-by-side, or "RL" JPEG or PNG, with JPS and PNS (respectively) extensions and MIME types.

Once you know what image format you've got (LR "parallel" JPEG, RL "cross eyed" JPEG, odd or even vertically or horizontally interlaced JPEG, etc) it's a simple matter to convert it to any other viewing format (Anaglyph, LR, RL, compressed LR, interlaced, dual screen, etc) and apply any necessary lens corrections, etc). That's how RL became the standard: it's not "the best", it just serves as a "known starting point".

Back 10-15 years ago, during a 3D renaissance that never happened, people started releasing browser plugins that would allow you to set your viewing preference (anaglyph in various color combinations, LR, RL, interlaced, etc) and have any JPS or PNS display automatically.

Some of these included NuVision 3D, Schillr, and VRex DepthCharge. I haven't tried installing one of these plugins in a modern browser.

At least one of these (don't ask me which one) added a right context menu to allow it to process stereo images that were not properly tagged as JPS or PNS. That was very handy, as you could use it on all the images that people post in this forum.

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Rahon Klavanian 1912-2008.
Armenian genocide survivor, amazing cook, scrabble master, and loving grandmother. You will be missed.
Ciao! Joseph
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