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Published byKathryn Fleming Modified over 9 years ago
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Stereoscopic images Several methods: –Anaglyph –Polarization –Timesequential (shutterglasses) –Lenticular L A Rønningen/ E Heiberg, Item 2008
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Stereoscopic images Anaglyph method Two different colors for left and right eye ( Red/green, red/blue, red/cyan glasses ) Advantages: Cheap glasses Easy to create the images No need for special monitor (regular Tv works just fine) Disadvantages: Poor color quality Ghosting (right eye sees parts of the left eyes image, and vice versa) Left eye Right eye Red channel removed Green and blue channel removed Anaglyphic result
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Stereoscopic images Polarization method Two different images for left and right eye, in space Advantages: Cheap glasses Good color quality and stereo effect Disadvantages: Expensive/lots of equipment (2 projectors, projector rack, special canvas, polarization filters) Difficult to align the projectors perfectly (can introduce vertical parallax) Viewers can’t tilt their head sideways
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Stereoscopic images Time/frame-sequential method Two different images for left and right eye, time multiplexed Advantages: Good color quality and stereo effect Disadvantages: More expensive (shutter)glasses (compared to the anaglyph and polarization methods) Requires a 120Hz display to avoid flickering (60Hz for each eye)
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Autostereoscopic multiview images Lenticular method Multiple autostereoscopic views in space Advantages: Good color quality and stereo effect No need for glasses! Disadvantages: Very expensive displays Some displays available For a screen of N Mpixels, the resolution is N/(the number of views) Lenticular lenses Screen Philips 42” WOW multiview lenticular display Price: ~11000€
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Cooperative Learning: Discuss the methods for stereoscopic imaging Learning goals: For the four methods presented, each of the group members shall: –Understand the principles –Be able to present the methods for peers –Be able to apply the methods
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Autostereoscopic Multiview TV system
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Cont’
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Philips lenticular display
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Edge blending
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Geometric correction (warping)
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Cooperative Learning: Stereoscopic multiview TV: What can be done when the number of cameras and projectors are not the same?
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