Making anaglyph images, Methods and software |
Making anaglyph images, Methods and software |
Aug 17 2012, 09:20 PM
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#1
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Member Group: Members Posts: 252 Joined: 5-May 05 From: Mississippi (USA) Member No.: 379 |
I have found more than one good program to make anaglyphs from the same size images of the L & R HAZ and NAV Camera's, but for long baseline anaglyphs you need to do something called "registering" one of the images with the other. Five years ago I had such a program, but not any longer. Questions OS Windows 7 1. Does anyone know of such a program that is simple and effective. It doesn't have to be free - but not more than $100! 2. (GIMP) I can create anaglyphs using a Gimp plug-in, if I import the two images as layers. What I haven't been able to figure out is how to make the top layer transparent. Then assume I could slide the top layer around until it is registered. Can anyone tell me how to adjust the transparency of the top layer? Gimp is such a pain I would probably pay for a program if I did much of this. I spent about 20 hours messing about with Gimp without getting anywhere. It was only when I accidentally imported color images that the plug-in worked! So now I "increase" the color depth in my images (using Irfan), and save them out as grey-scale images with something called a "color space." It works! What can I say, the plug-in was last updated in 2008! I would love something more automated, but I won't be using it that much. |
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Aug 17 2012, 09:48 PM
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#2
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
1. Does anyone know of such a program that is simple and effective. Free. http://stereo.jpn.org/eng/stphmkr/ -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Aug 17 2012, 10:56 PM
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#3
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Member Group: Members Posts: 252 Joined: 5-May 05 From: Mississippi (USA) Member No.: 379 |
How does it register two images if the images are of different sizes, and/or slanted at a different angles? Does it make the second image semi-transparent so that you can register one image with the other easily. Lets say the Rover drives 200 meters latterly (long base line), but the crater is 20% bigger in the second image because the rover has also driven 100 meters closer to the crater. Lets also say one image was taken by the Mastcam camera and another by a NavCam camera. I made an anaglyph from crops of two MARDI images. There had been both quite noticeable rotation and altitude changes between the two images. After many hours I got an anaglyph that was barely worth the name. Heck I will upload it because I can no longer trust my own judgement about its quality. The craters keep turning into mounds. Remember I didn't try for accuracy just a 3d effect. Does it have a 3d effect? These are much easier to do if you have the correct program. EDIT Actually I double checked and there was actually little rotation. http://mars.jpl.nasa.gov/msl-raw-images/ms...0476E1_DXXX.jpg http://mars.jpl.nasa.gov/msl-raw-images/ms...0485E1_DXXX.jpg |
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Aug 18 2012, 03:31 PM
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#4
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Newbie Group: Members Posts: 11 Joined: 12-August 12 Member No.: 6550 |
How does it register two images if the images are of different sizes, and/or slanted at a different angles? Here is a link to the documentation. The page that specifically answers your question is here. |
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Aug 18 2012, 07:01 PM
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#5
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Member Group: Members Posts: 252 Joined: 5-May 05 From: Mississippi (USA) Member No.: 379 |
Here is a link to the documentation. The page that specifically answers your question is here. Wow! Thanks! I did look at the user guide but did not notice, and therefore read,, the documentation. That program certainly looks like it is worth a thorough test by me. However, I spent so much time trying to get Gimp to work, that it will probably be a week or two before I have much free time! Thanks again for your help Jack |
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Aug 21 2012, 09:20 PM
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#6
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
QUOTE 2. (GIMP) I can create anaglyphs using a Gimp plug-in, if I import the two images as layers. What I haven't been able to figure out is how to make the top layer transparent. Then assume I could slide the top layer around until it is registered. simple open up the layer window and click on the top image then move the slider to 50% as for stereo images NASA/AMES "stereo pipline" - free , but for Linux Hyperion CV /cyclops - google code , a bit old and no longer worked on but works http://code.google.com/p/hyperion-cv/ http://thaines.com/content/blogsection/3/6/ use svn http://code.google.com/p/hyperion-cv/source/checkout --win prebuilt -- http://thaines.com/content/view/38/8/ cyclops_win32_08-09-22.zip but for cyclops YOU will HAVE TO MAKE YOUR OWN camera model |
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Aug 21 2012, 11:53 PM
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#7
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Member Group: Members Posts: 252 Joined: 5-May 05 From: Mississippi (USA) Member No.: 379 |
simple open up the layer window and click on the top image then move the slider to 50% Thanks JohnVV! Now all I have to do is find the time to compare both programs. Stereo Photo Maker vs GIMP with the Anaglyph plug-in. sigh I should get around to it in a couple of weeks. It appears to me that the plug-in will not recognize grey-scale image files unless they have been modified to have a color space. That creates a couple of extra steps. It seems the the plug-in was last updated in 2008! Maybe an older version of GIMP would not have that problem. I am not \going to worry about that until I see if GIMP with Anaglyph plug-in has any advantages over Stereo Photo Maker. Jack |
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Aug 22 2012, 07:21 AM
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#8
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
simple open up the layer window and click on the top image then move the slider to 50% A better way of doing anagyphs in Gimp is to change the Mode of the top layer from 'Normal' to 'Addition'. -------------------- |
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Sep 7 2012, 11:38 PM
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#9
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
It's pretty easy in photoshop:
open the left and right images drag one of the images on top of the other to create two layers, don't worry about registration yet close the file you dragged--not needed any more change mode from grayscale to rgb adjust levels for the right image: set Red to 0 adjust levels for the left image: set G and B to 0 for the layer on top, set blending mode to screen now you can see corresponding elements in each picture and can try to align it in different ways with the move tool adjust overall levels for each layer for best effect -------------------- |
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Sep 8 2012, 12:27 AM
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#10
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
It's pretty easy in photoshop: .............. adjust overall levels for each layer for best effect Et voila! Here's one I made from two photos of Yosemite National Park through an airplane window last week (@35,000 feet, roughly over Fresno, California with a 250mm lens looking East). Most of the time spent on it was cleaning up the low contrast, low saturation, color-shifted images that result when you try to take a photo through the three or four layers of plexiglass and glass of a modern aircraft window. But once I had the two cleaned up photos it was quite easy to turn it into a red-blue 3D image using Photoshop CS5 and steps similar to the process jmknapp described above. -------------------- If Occam had heard my theory, things would be very different now.
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