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 Replies: 22 / Views: 5,021 |
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Bedrock of the Community
United States
10045 Posts |
Wow--great use of focus-stacking to capture a sense of depth!  Is that just focus-stacking or some kind of 3D software too? Edited by DVCollector
10/22/2014 11:07 pm
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Pillar of the Community
  United States
4038 Posts |
Focus stacking just results in a 2-D image. It takes a 3D program to convert the depth map into a viewable 3D rendering.
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Bedrock of the Community
United States
10045 Posts |
 Are you saying you used 3D software as well--where did you get the relief data to map to the image? |
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Pillar of the Community
United States
4038 Posts |
The data comes from the focus stacking depth map. Pixels that are selected from each image are associated with a particular depth.
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Bedrock of the Community
United States
10045 Posts |
Wow--that's a pretty cool use for focus-stacking! Which stacking program generates that depth map--Helicon Focus?
Edited by DVCollector
10/23/2014 12:09 am
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Pillar of the Community
United States
4038 Posts |
Both Helicon and Zerene can be used. CZP may also do it, I'm not sure. Supposedly photoshop does it as well. There are also many 3D CAD programs capable of this and much more...Ray
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
United States
1374 Posts |
OMG. I'm stunned. I must do this. Help me get started guys!
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Pillar of the Community
United States
4038 Posts |
Sorry, but the setup I use for the 3D images was custom made for me, so I can't reproduce it easily. Note also that each of these is a stack of typically 36 images, and must be processed for depth map and then 3D rendering, so it is a time consuming process. I am not trying to discourage, just to inform...Ray
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Bedrock of the Community
United States
10045 Posts |
I see that Helicon Focus includes a "3D Viewer" that allows you to apply a depth map generated from focus stacking onto an image--it doesn't get much easier than that!  Once applied to the image, you can adjust the viewing angle and add a light source to bring out the relief. This is a standard feature of 3D rendering packages. Although some are far more sophisticated than 3D Viewer, having this integrated in stacking software means I'll probably go with Helicon--once I get my tethering setup ready.  Edited by DVCollector
11/03/2014 2:28 pm
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Moderator
United States
23522 Posts |
Hey, Ray: You realize that you've singlehandedly taken coin photography to a new level, right?
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Pillar of the Community
United States
4038 Posts |
The 3D images really are pretty cool. They also seem to be useful for showing details that you can't see any other way. The whole depth dimension is missing of course from 2D shots, but when we're examining coins to see variety details we often look from various angles and it is this effect I'm trying to emphasize. I have tried showing the actual 3D images in some fashion, but they are more gimmicky than it seems to be worth. A guy over on another forum took one of the true 3D images and made an animated gif of it. Toggles back and forth. I think it is useful to show depth, perhaps even better than cross-eyed 3D. I'll try making one and publishing it here. As I make the perspective images, I save a cross-eyed 3D as well with the goal of doing an animation with them but so far have not found a good workflow to make them easily. Anyone have a suggestion for a good animated gif maker?
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Pillar of the Community
United States
2669 Posts |
I use Photoshop CS5 to create animations. You create the different frames as layers, then set it to "tween" (auto-create the missing frames between layers) to create the animation from point A to B. I usually start with more than 2 frames though, especially if it's a somewhat lengthy or complicated animation I want to show. For this purpose, you could start with 3 (tilted left, straight, tilted right) then see if tweening A > B and B > C creates the depth you want. You can add as many frames as you like and specify the delay between them to make the animation as smooth as possible, and it helps to have the layers be exactly straight so you don't get a jumpy animation. If you don't want to go with Photoshop, you could try using the GIMP (GIMP is free, and does many things Photoshop does). I've never used it for animation but there's a tutorial here: http://www.gimp.org/tutorials/Simple_Animations/ - there are also a lot of online GIF makers you could try out to see if they'd work, although I think some may have size or frame limitations. If you do go with Photoshop and would like help, just holler :) |
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Pillar of the Community
United States
4038 Posts |
Thanks xshift. I have a copy of CS5 but have not tried it for animations. I used one of the online makers before and it worked pretty well, but I can't find it now. All the ones I tried had too many limitations. I don't think I'm brave enough to try GIMP...
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Valued Member
440 Posts |
Lots of extra steps using GIMP & a good measure of trial & error but it will eventually work.
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Pillar of the Community
United States
4038 Posts |
I used one of the online animators to make this:  |
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Replies: 22 / Views: 5,021 |
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First Page
Posted 10/22/2014 11:05 pm
