Tag Archives: Stereoscopy

Handheld, single camera, #3D still photos

The following photos were taken while hiking, using a single Lumix GH-2 camera.  The 3D effect is created by taking the left image photo, then moving the camera slightly to the right, and taking the right image photo. The two images are then combined in Stereo Photo Maker to create these red/cyan anaglyph images.

(Click on any image for full size – all are in red/cyan stereo anaglyph format)

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3d photos taken with a single camera

While hiking I took several 3D photos using a single Canon SX1 IS camera. This works by taking a photo and then sliding the camera a couple of inches to the right and taking the same photo again. The left and right images are then combined with Stereo Photo Maker to create a 3D image.

Obviously, when handheld, camera pointing is not perfectly aligned in the left and right images. Much of the alignment can be cleaned up in Stereo Photo Maker but there will be little artifacts, like lens barrel distortion, still present. But still, this is an interesting way of easily photographing 3D photos of stationary subjects.

(Click on any image for full size – all are in red/cyan stereo anaglyph format)

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3D Video image stabilization

When shooting 3D video using two cameras, we turn off all in camera stabilization features. This makes hand held video look shaky, unfortunately, as all the little hand movements remain in the original clips. Consequently, we have to shoot most 3D on a tripod.

I just did a test, though, using my Canon Vixia HF M301 video cameras. I use two of them to shoot stereoscopic 3D. The HF M301 has three stabilization options: off, standard and dynamic. For my tests, I shot a scene using standard stabilization and another scene using dynamic. Then I paired the left and right tracks in Magix Movie Edit, output to a WMV 3D anaglyph file and watched the test video.

For general hand held shots without rapid camera movements, the in camera stabilization tracked well between both cameras. However, rapid camera movements caused different stabilization effects in each camera and the 3D goes bonkers as one goes left and the other goes right!

Bottom line: for simple handheld shots without a lot of movement, the in camera stabilization works okay and eliminates the handheld jerkiness.

Ideally, it would be nice if we could stabilize the 3D images after editing but there is not an easy way to do that.

Most video editing software today has image stabilization capabilities. Image stabilization analyzes the video for jerky movements and then corrects by shifting the video around to minimize the jerky movements. Since this tends to leave black bars at the top, bottom or sides, the video is also enlarged slightly to fill in the black bars left by shifting the video.

When it comes to 3D video, there does not seem to be a great solution. Sony Movie Edit Platinum 11 disables the stabilization feature on paired 3D clips. Magix Movie Edit Pro MX Plus can stabilize individual clips before pairing – but there is not a good way to match the stabilization between the left and right tracks. You can stabilize one, copy the effects track and paste it to the 2nd track, but this has not produced the expected result of matching stabilization.

I suppose we could created our 3D track, output to a video file, import that file as a single clip that may as well be 2D as far as the editor is concerned, and then apply stabilization. Not sure I want to go through two more transcodes though!

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Build your own 3D dual camera mounting rails

Ritwika Mitra shows how to build your own dual camera mount featuring an adjustable interaxial distance for 3d stereoscopic photography or video. Ritwika is a high school senior, by the way. Cool young woman! She and her sister are also the founders of the non-profit Rennow.org.

The details begin at about 2:30 into the video. I built this but I also use a fixed mounting bracket that is simpler and smaller. At some point, I will post photos of my set up for 3D.

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Amazing – Create 3D video from old 2D videos

California/Arizona Time Lapse on Vimeo by Dan ...
Image by cloudchaser32000 via Flickr

This is an amazingly nice 3D video created by Dan Eckert as a conversion from 2D video.

How the heck does that work? As long as the camera is moving slowly left or right during the video shoot, you can create a fake 3D stereoscopic view by offsetting the 2D video by a few frames. Use the original video stream for one eye and the offset stream for the other eye – your brain sees this as three dimensional. The effect is amazing.

Youtube now provides a 2D to 3D conversion feature as well.

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