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STEREO projection |
DIGITAL PROJECTION |
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STUDIO 3D began by setting some standards for digital still projection (as an upgrade from the "old-fashioned" slide projection). Originally, "moderately" priced digital projectors ran a native XGA (1024x768) resolution, so this is what we used for our image pairs (2xga). Current projection systems can run full HD (1080p per eye) by active or passive systems.
We are currently investigating best options for passive stereo projection systems.
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The active system used was the DEPTHQ® HD stereo video projector which could project on to ANY surface (not restricted to silver or special rear screen) and could be run from almost any PC or laptop (with nVidia card). Hi-quality, wireless shutter glasses were used with a long range IR emitter. 120hz for flicker-free performance, but glasses were costly and batteries were prone to failure. Currently, projectors called "3D-ready" are set up for active glasses use. |
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DIGITAL STEREO PROJECTIONThings are changing fast in the digital world, so solutions are constantly evolving. Not mentioned below is a very simple but effective solution for aligning and projecting stereo stills, STEREO PHOTO MAKER. Another free (or $20 donation) and very powerful slide show solution is MYALBUM which offers fades and other transitions (be careful with stereo transitions... a vertical wipe won't work!). Powerpoint works, but is somewhat glitchy. We have also found that PROSHOW can have problems with files larger than 2xga, while PICTURES TO EXE ($49/$75) seems to have no such problems. LAPTOP PROJECTIONThe DualHead2Go is the easiest way to run stereo slides from a laptop (check compatibility). Instant HORIZONTAL SPAN for your dual projectors, which allows for POWERPOINT or other slide show programs such as PROSHOW to run. You can also use the Tritton Technologies SEE2 USB 2.0 adapter (or the new EVGA UV Plus) that allows a second video out for POWERPOINT shows... with the Tritton you'll need an "add-in" called POWERSHOW, which supports multiple monitors for stereo display COMPUTER PROJECTIONProjection of stereo pairs from a (Windows XP) desktop or portable computer requires a dual head video card with a "HORIZONTAL SPAN" mode. The spanned monitors should be set to resolution of paired stereo images, for example: 2xga (2048 x768). For Windows 7, it's easiest to use the DualHead2Go (see laptop above). We no longer use PROSHOW for creating slide show executables. We've found outputting to video, such as through Sony Vegas Pro software, is much more versatile for utilizing multiple types of projection setups. We also no longer use POWERPOINT in speaker mode with Tritton adapter (or the new EVGA UV Plus) . NOTE about MOVING your STILL IMAGES:
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2XGA images for digital projectionWe call this format 2xga- it's basically 2 xga images attached as one... the images are crossed, with the left on the right side and the right on the left. This conforms to the .jps format set up by VREX, a leading stereoscopic company in NY, which is compatible with their Depthcharge interenet browser software (and other companies, like Canopus, are supporting this format as well). An advantage of the crossview is that any size image can be freeviewed. The Pokescope software will recognize this format with either the .jps or .jpg extension. (Note: though the images are crossed in the original file, most stereo software can show the pair as parallel or crossed- or anaglyph or interlaced for that matter!) |
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If an image does not fit the xga aspect ratio, the image pair should be set up with the same height (768 pixels) with black added to the sides to fill out the image to 1024 pixels per side.
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STUDIO 3D Reviews the commercial 3D MOVIES
1950 Boxoffice Magazine article calling for 3D MOVIES
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In ancient times, people projected still images using 35mm transparencies called SLIDES (or "chromes"). The slide mounts were 2"x2" square, and the size of the image was 24mm high by up to 36mm wide. For stereo, images were often cropped to 32mm wide (making an image that was "TV" size, with a 3:4 aspect ratio). Two projectors for one stereo image, four projectors allows one stereo pair to dissolve to the other, and back again.
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Stereo slide projection has most professionally been done using multiple 2x2 (35mm) projectors. STUDIO 3D has created a number of stereoscopic slide presentations for schools, museums and clubs. Equipment has included:
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All stereo pairs are set-up for cross-viewing.
STUDIO 3D stereo slide presentations include:
THE
EYES HAVE IT
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POWER
OF PEOPLE
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THE 3D
SHOW
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