I'm sure there's a good reason, but does anyone know why NASA shoots red/blue "3D" images instead of true stereo? I've always been disappointed in red/blue 3D; the stereo effect is minimal at best, and the diffraction "clutter" detracts from the detail, whereas in a true stereo shot detail does not suffer from these effects. Is anyone else "underwhelmed" by red/blue 3D? BTW, true stereo can be done with only one movable camera for landscapes. I shot true-color stereo images of Hale-Bopp, they turned out great. In that case, moving the camera was accomplished by waiting a few minutes between exposures- the earth moved it for me. C. __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus
The B&W engineering photos that NASA first released from Spirit's initial survey actually were true stereo pairs. -- Joe
Joe, all I saw were the blue/red images. Do you have a URL for the true stereo shots? True stereo will always be 2 nearly identical images side-by-side. If it is only one image, it is not true stereo. Thanks! C. --- Joe Bauman <bau@desnews.com> wrote:
The B&W engineering photos that NASA first released from Spirit's initial survey actually were true stereo pairs. -- Joe
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Hi Chuck, I just scoped 'em out myself and realized they were stereo pairs. The camera at the top of the mast has twin lenses to take real stereo, and that's what these are. I think that when they paste together their panoramas and make them 3D, they use such pairs to do it. But I much prefer to see them as separate views, one for each eye. Here's where they have them on the Internet: http://marsrovers.jpl.nasa.gov/gallery/all/spirit.html Best wishes, Joe
PS: If you download these raw images you can adjust the contrast and brightness so that they look pretty good. -- Joe
Thanks, Joe! BTW, the US Government started documenting war in stereo during the Civil War. There are true stereo pairs in existence going back at least that far. Im still in the dark as to why anyone does the red/blue thing. Just destroys a good photo IMO, humble as it is. C. --- Joe Bauman <bau@desnews.com> wrote:
PS: If you download these raw images you can adjust the contrast and brightness so that they look pretty good. -- Joe
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Think it's just because Joe and Betsy Citizen are pretty likely to have a pair of red/blue glasses around the house. True stereo pairs require a viewer or the crossed-eye bit. Michael
Im still in the dark as to why anyone does the red/blue thing. Just destroys a good photo IMO, humble as it is.
Sounds logical, but crossed-eyes are surely much more ubiquitous than red-blue cardboard glasses, and produce better results. (Heck, I got my stereo viewer in high-school...doesn't eveyone? No, a Viewmaster doesn't count.) I'm guessing that someone at NASA is heavily invested in red/blue cardboard glasses... ;) C. --- Michael Carnes <moogiebird@earthlink.net> wrote:
Think it's just because Joe and Betsy Citizen are pretty likely to have a pair of red/blue glasses around the house. True stereo pairs require a viewer or the crossed-eye bit. Michael
Im still in the dark as to why anyone does the red/blue thing. Just destroys a good photo IMO, humble as it is.
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Here is a large group of the latest Mars stereo images, not overlapped into blue and red views. Click on the Panorama Camera set, and take a look! Wow! And tell me if suspect show show ice sheets. Best wishes, Joe
participants (3)
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Chuck Hards -
Joe Bauman -
Michael Carnes