Note that for side-by-side stereo viewing, in addition to "cross-eyed" viewing (where the right eye views the left image and vice-versa) there is "wall-eyed" viewing, where the eyes are pointed almost straight ahead as if looking at infinity, or even diverging a little, to see the picture on the same side. One of my post-doc advisors could only see cross-eyed stereo, I can only see wall-eyed. (My eyes have a strong tendency to diverge if not focusing on something- this is the test where the optometrist holds a little mask in front of one eye for a few seconds, then jerks it out and watches as the eyeball rotates to match views with the unblocked eye.)
The page at http://spdbv.vital-it.ch/TheMolecularLevel/0Help/StereoView.html gives examples of both: second (convergent)and third (divergent) images on the page, so you can find out (if you don't already know) which works best for you. I believe the most frequently used in publications is wall-eyed viewing. This is necessary for using most "stereo viewers". When I publish a stereo Figure, I like to put a corresponding one in supplemental material with cross-eyed viewing. This saves the cross-eyed only people like my mentor from having to take a screen shot, switch the sides in photoshop, in order to see stereo in it. (how many people would go to the trouble?) Or you can use ImageMagick to swap automatically like: #!/bin/csh -f convert -crop 50%x100%+0+0 $1 left.jpg set geom=`identify left.jpg |awk '{print $3}' |sed -e 's/x/ /'` set width=`echo $geom | awk '{print $1}'` convert -crop 50%x100%+$width+0 $1 right.jpg convert right.jpg left.jpg +append out.jpg #convert -delay 50 left.jpg right.jpg anim.gif Where $1 is the stereo picture and out.jpg is the reversed stereo figure The commented out line produces an animated gif rocking between the two, which gives better depth perception for some people Same thing for .tif for publication (Starting with a .tif for $1): #!/bin/csh -f convert -crop 50%x100%+0+0 $1 left.tif set geom=`identify left.tif |awk '{print $3}' |sed -e 's/x/ /'` set width=`echo $geom | awk '{print $1}'` convert -crop 50%x100%+$width+0 $1 right.tif convert right.tif left.tif +append out.tif #convert -delay 50 left.tif right.tif anim.gif eab ===================================== On 01/18/2015 01:54 PM, Jim Fairman wrote:
You can create stereo images for publications in pymol: http://www.pymolwiki.org/index.php/Stereo_ray Adding labels and getting them to "float" at the correct depth within the image can be tricky. As for visualizing the stereo images, you can either practice alot and get good at cross eyed stereo viewing, or you can buy a pair of glasses to assist you in seeing the 3d effect. If you google "cross eyed stereo glasses", you will get many options to purchase. Old chemistry texts used to come with a pair, but I'm not sure that students actually purchase textbooks anymore. On Sat, Jan 17, 2015 at 23:50 PM, jeorgemarley thomas <[email protected]> wrote: Dear all, First of all sorry to put this off topic and silly question on bb. Can anybody suggest me, how to create a stereo image and how it is different from the normal. How can I visualize it, if anybody has answer for this please suggest me its significance in analysis. Thank you very much in advance. Thanks Jeorge -- Sent from MetroMail
