Projection/Motion Media/Multimedia L Projected Images Projected Images And And Projection Systems Projected Images Projected Images And And Projection

Projection/Motion Media/Multimedia Projection/Motion Media/Multimedia

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Projected ImagesProjected Images AndAndProjection SystemsProjection Systems



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Large Images




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Large ImagesAttract Attention



Reflector

Lamp

Lens(Condenser)

Transparency

Lens(Projection)

Screen

Generic Projection SystemGeneric Projection System


Projection ScreensRear Screen

Front Screen


Front Projection ScreensFront Projection Screens

� Matte SurfaceMatte Surface

� LenticularLenticular

� High ReflectanceHigh Reflectance


Viewing PrinciplesViewing Principles

Angle of ViewAngle of View

< 30Þ< 30Þ


Viewing PrinciplesViewing Principles

Minimum/Maximum Viewing Distance

w = image width

4w – comp. proj.

2w min.

6w – non-computer


Keystoning Keystoning


Motion MediaMotion Media


Attributes of Motion MediaAttributes of Motion Media

� Show MotionShow Motion

� Manipulate Time and SpaceManipulate Time and Space


Show MotionShow Motion

� Persistance of VisionPersistance of Vision

¦ Re-creating MotionRe-creating Motion

¦ Moving the MotionlessMoving the Motionless


Manipulate Space and TimeManipulate Space and Time

� Manipulation of SpaceManipulation of Space

� Manipulation of TimeManipulation of Time

¦ CompressionCompression

¦ ExpansionExpansion

¦ Arresting MotionArresting Motion


Advantages Advantages of Motion Mediaof Motion Media

� Visual ContinuityVisual Continuity

� Remote ObservationRemote Observation

� Repeated ViewingRepeated Viewing

� Dramatize EventsDramatize Events


Advantages Advantages of Motion Mediaof Motion Media

� Emotional ImpactEmotional Impact

� Command AttentionCommand Attention

� Distance Transmission (TV)Distance Transmission (TV)

� Easy/Universal (TV)Easy/Universal (TV)


Limitations Limitations of Motion Mediaof Motion Media

� Fixed PaceFixed Pace

� Expensive ProductionExpensive Production

� Advance PlanningAdvance Planning

� Large Group Projection (TV)Large Group Projection (TV)

� Resolution (TV)Resolution (TV)


Resolution Resolution of Film and Televisionof Film and Television

� TV : TV : 525525 lines lines

� HDTV: HDTV: 1,1251,125 lines lines

� 16mm Film : 16mm Film : 2,0002,000 lines lines

� 35mm Film : 35mm Film : 4,0004,000 lines lines


Formats – FilmFormats – Film

� 16mm16mm

� 35 mm35 mm

� 70mm70mm


Formats – TelevisionFormats – Television

� Professional Formats – Professional Formats – 2” Quad 2” Quad 1” “C” Format 1” “C” Format 1/2” BetaCam SP, M2 1/2” BetaCam SP, M2 1/2” Digital (D2) 1/2” Digital (D2)

� Industrial/Educational Formats – Industrial/Educational Formats – 1/2” VHS S-VHS 1/2” VHS S-VHS 8mm Hi-8 8mm Hi-8 3/4” U-Matic3/4” U-Matic

� Distribution Format – Distribution Format – VHSVHS


MULTIMEDIA MULTIMEDIA

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


Examples of Multimedia Examples of Multimedia Systems Systems

� Slide/TapeSlide/Tape

� Programmable Control SystemsProgrammable Control Systems

� Multimedia Classroom Control Multimedia Classroom Control SystemsSystems

� Multimedia Computer WorkstationsMultimedia Computer Workstations


Examples of Common Media Examples of Common Media Formats for Multimedia Formats for Multimedia

� Audio tapeAudio tape

� VideotapeVideotape

� SlidesSlides

� Video DiscVideo Disc

� Compact Audio Disc (CD)Compact Audio Disc (CD)

� CD ROM Digital Data StorageCD ROM Digital Data Storage


Slide/Tape ProgramsSlide/Tape Programs

� Group presentaionGroup presentaion

� Individual PresentationIndividual Presentation


Advantages of Slide/TapeAdvantages of Slide/Tape

� Consistent narrative informationConsistent narrative information

� Mixing of non-verbal audio Mixing of non-verbal audio (music, natural, fx) (music, natural, fx)

� Audio/visual information linkedAudio/visual information linked

� Relatively easy and inexpensive Relatively easy and inexpensive to produce locally to produce locally


Limitations of Slide/TapeLimitations of Slide/Tape

� Special equipment set-upSpecial equipment set-up

� Sound and visual can get out of Sound and visual can get out of sync sync

� Provides limited visual movement Provides limited visual movement (not true motion)(not true motion)


SynchronizationSynchronization

Principle: record pulses on Principle: record pulses on audiotape at point where visual is audiotape at point where visual is to changeto change


SynchronizationSynchronization

� Audible PulsesAudible Pulses: Tones on the : Tones on the audio track which can be heard audio track which can be heard by the viewer, cueing him/her to by the viewer, cueing him/her to manuallymanually advance the slides. advance the slides.

� Inaudible PulsesInaudible Pulses: Tones on an : Tones on an audio track other than the audio track other than the program track (1000 Hz) which program track (1000 Hz) which advance the slides advance the slides automaticallyautomatically..


Multi-image PresentationMulti-image Presentation

� Multi-imageMulti-image: Images from more : Images from more than one projection source than one projection source displayed on one or more displayed on one or more screens in sequence or screens in sequence or simultaneouslysimultaneously

� Multi-screenMulti-screen: Multi-image : Multi-image presention which uses more presention which uses more than one screenthan one screen


Some common uses of Some common uses of Multi-imageMulti-image

� Education/trainingEducation/training

� Informational presentations Informational presentations

� Motivational presentations Motivational presentations

� Entertainment Entertainment


Reasons for using Reasons for using multi-imagemulti-image

� Compare/contrastCompare/contrast

� Continuity (build)Continuity (build)

� Maintain relationshipsMaintain relationships

� Special effectsSpecial effects

� Simulate motionSimulate motion


Common Multi-image Common Multi-image FormatsFormats

� Single ScreenSingle Screen

� Side-by-Side Side-by-Side

� Multiple Multiple Screens/Multiple Screens/Multiple projectors projectors


Electronic Multimedia and Electronic Multimedia and InternetInternet

� CD ROM CD ROM

� QuickTime Virtual QuickTime Virtual RealityReality

� RealAudioRealAudio

� Netscape – Web SitesNetscape – Web Sites

Documents

Projection/Motion Media/Multimedia L Projected Images Projected Images And And Projection Systems Projected Images Projected Images And And Projection