Seminar on 3D Technology
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The document summarizes the history and techniques of 3D movies. It discusses early 3D movies from the 1920s using red-green anaglyph and polarized filters. Various 3D techniques are described such as anaglyph, polarization, eclipse method, interference filters, Pulfrich effect, spectral separation, and lenticular/barrier screens. Recent developments discussed include autostereoscopic screens without glasses and holographic displays.
Seminar on 3D Technology
- 2. History 1980: William Friese Greene obtained first patent 1900: 3D camera by Frederic Eugene Ives 1915: Tests in Astor Theater, New York city by Edwin S Porter and William E via Red-Green anaglyph 1922: Earliest confirmed 3D movie The power of love in Ambassador hotel theater Los Angeles.
- 3. History 1922: Teleview system- alternate left right images projected synchronized with arm rests of seats. 1922: First Red-Blue anaglyph movie 1936: MGM presented Academy Award and Best short Subject award winning movie Audioskopiks
- 4. Techniques Anaglyph Polarization Eclipse Method Interference filter technology Pulfrich Spectral separation Lenticular or barrier screen
- 5. Anaglyph Earliest method Introduced in 1915 Superimposing two images, one left eye oriented (RED) another right eye (CYAN) Can be used in TV broadcasting easily Actual color is not recreated successfully
- 6. Polarization Polarized at 45 degree and 135 degree (90 degree difference) RealD glasses Circular polarization preferred over linear, since viewer need not to align himself/herself according to the image orientation 4K projector projects 2K images on screen
- 7. Polarization Metallic screen makes it effective (silver screen), polarization not destroyed, introduced by Thomson Technicolor. It reduces overall image brightness and contrast.
- 8. Eclipse LCD Shutter glasses are used Do not require silver screen Brightness and contrast maintained LCD valves the work by rotating the light between two opposite polarizing filter Expensive glasses
- 9. Interference filter technology Different wavelength of RED CYAN BLUE for each eye (Dolby 3D) Appropriate filters for each eye PANAVISION introduced 5 filter per eye ove r Dolby 3D Claims to be cheaper than Dolby 3D and can be viewed on almost all projectors and screens unlike Dolby 3D
- 10. Pulfrich Based on human eye sensitivity for different light intensity Body moves from left to right at some pace and left eye covered with darker lens It creates a two images illusion Not widely used
- 11. Spectral Separation Uses holographic film in glasses that create dispersive prism like effect Causes redder objects perceived as near then bluer objects
- 12. Lenticular of Barriers Superimpose two images Same sheet Alternating strips Screen having narrow lenses allows one image to be shown at some particular angles (using parallax)
- 13. Lenticular of Barriers Lenses when made cylindrical reflects light at acute angle Viewer have to sit at an angle about 90 degree Restricts number of viewers Not widely in use
- 14. New Arrivals Without glasses Autosterioscopic LCD screens Introduced by Sharp in 2004 Autosterioscopic mobile screens by Japan in 2009 (Hitachi) Gaming devices: Nintendo 3DS
- 15. New Arrivals A motion film standard 70mm film projection 8 stories high screen (silver light) One of the best 3D experience
- 16. New Arrivals Cheoptics360 Realistic holograms Using pyramidal fog screen and multi projection techniques