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Projected Images And Projection Systems

LL. Projected Images And Projection Systems. LL. Projected Images And Projection Systems. Large Images. LL. Projected Images And Projection Systems. Large Images Attract Attention. Generic Projection System. Projection Screens. Rear Screen.

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Projected Images And Projection Systems

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  1. LL Projected Images And Projection Systems

  2. LL Projected Images And Projection Systems Large Images

  3. LL Projected Images And Projection Systems Large Images Attract Attention

  4. Generic Projection System

  5. Projection Screens Rear Screen Front Screen

  6. Front Projection Screens • Matte Surface • Lenticular • High Reflectance

  7. Viewing Principles Angle of View < 30Þ

  8. Viewing Principles w = image width 2w min. 4w – comp. proj. 6w – non-computer Minimum/Maximum Viewing Distance

  9. Keystoning

  10. Motion Media

  11. Attributes of Motion Media • Show Motion • Manipulate Time and Space

  12. Show Motion • Persistance of Vision • Re-creating Motion • Moving the Motionless

  13. Manipulate Space and Time • Manipulation of Space • Manipulation of Time • Compression • Expansion • Arresting Motion

  14. Advantages of Motion Media • Visual Continuity • Remote Observation • Repeated Viewing • Dramatize Events

  15. Advantages of Motion Media • Emotional Impact • Command Attention • Distance Transmission (TV) • Easy/Universal (TV)

  16. Limitations of Motion Media • Fixed Pace • Expensive Production • Advance Planning • Large Group Projection (TV) • Resolution (TV)

  17. Resolution of Film and Television • TV : 525 lines • HDTV: 1,125 lines • 16mm Film : 2,000 lines • 35mm Film : 4,000 lines

  18. Formats – Film • 16mm • 35 mm • 70mm

  19. Formats – Television • Professional Formats – 2” Quad 1” “C” Format 1/2” BetaCam SP, M2 1/2” Digital (D2) • Industrial/Educational Formats – 1/2” VHS S-VHS 8mm Hi-8 3/4” U-Matic • Distribution Format – VHS

  20. MULTIMEDIA Presentation systems or programs (materials) which incorporate a combination of media formats, usually including both aural and visual elements.

  21. Examples of Multimedia Systems • Slide/Tape • Programmable Control Systems • Multimedia Classroom Control Systems • Multimedia Computer Workstations

  22. Examples of Common Media Formats for Multimedia • Audio tape • Videotape • Slides • Video Disc • Compact Audio Disc (CD) • CD ROM Digital Data Storage

  23. Slide/Tape Programs • Group presentaion • Individual Presentation

  24. Advantages of Slide/Tape • Consistent narrative information • Mixing of non-verbal audio (music, natural, fx) • Audio/visual information linked • Relatively easy and inexpensive to produce locally

  25. Limitations of Slide/Tape • Special equipment set-up • Sound and visual can get out of sync • Provides limited visual movement (not true motion)

  26. Synchronization Principle: record pulses on audiotape at point where visual is to change

  27. Synchronization • Audible Pulses: Tones on the audio track which can be heard by the viewer, cueing him/her to manually advance the slides. • Inaudible Pulses: Tones on an audio track other than the program track (1000 Hz) which advance the slides automatically.

  28. Multi-image Presentation • Multi-image: Images from more than one projection source displayed on one or more screens in sequence or simultaneously • Multi-screen: Multi-image presention which uses more than one screen

  29. Some common uses of Multi-image • Education/training • Informational presentations • Motivational presentations • Entertainment

  30. Reasons for using multi-image • Compare/contrast • Continuity (build) • Maintain relationships • Special effects • Simulate motion

  31. Common Multi-image Formats • Single Screen • Side-by-Side • Multiple Screens/Multiple projectors

  32. Electronic Multimedia and Internet • CD ROM • QuickTime Virtual Reality • RealAudio • Netscape – Web Sites

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