Graphics, Hypermedia, and Multimedia 7

 2001 Prentice Hall7.2 Chapter Outline Focus on Computer Graphics Dynamic Media: Beyond the Printed Page Interactive Multimedia: Eye, Ear, Hand, and Mind Data Compression – How and Why “If you look out in the future, you can see how best to make right choices.” Doug Engelbart

 2001 Prentice Hall7.3 Focus on Computer Graphics Computer graphics include: –Painting Software –Digital Image Processing –Drawing Software –3-D Modeling Software –CAD/CAM –Presentation Software

 2001 Prentice Hall7.4 Painting Software GrAphicSGrAphicS Pixels:tiny dots of white, black or color arranged on the screen Bit-Mapped Graphics:pictures that are simple maps showing how the pixels should be arranged on the screen J a r g o n Resolution:the number of pixels (dots) per inch

 2001 Prentice Hall7.5 Use pointing devices to “paint” objects, shapes or freehand script on the screen Painting Software

 2001 Prentice Hall7.6 Painting Software Painting tools are used to create drawings A variety of special effects can be added

 2001 Prentice Hall7.7 Digital Image Processing: Photographic Editing by Computer Why Digital Imaging Software?  Provides a powerful way to edit high resolution images captured by digital cameras and scanners  Allows photographs to be edited and combined (think of the supermarket tabloids)  Offers a way to touch up pictures and make them look more professional and polished

 2001 Prentice Hall7.8 Digital Image Processing Start with this photo… Combine it with other images to create this… Or this…

 2001 Prentice Hall7.9 Drawing: Object-Oriented Graphics Object-Oriented Software offers drawing tools similar to painting software

 2001 Prentice Hall7.10 Drawing Shapes in Object-Oriented Software: –Are stored as formulas (not pixels) that describe how to draw that shape –Drawings are smoother and requires less memory than bit-mapped drawings

 2001 Prentice Hall7.11 Painting Pixels vs. Drawing Object Shapes –You have more control over textures, shading, and fine detail –Use for creating screen displays (for video games, multimedia presentations, and Web pages) When painting with pixels:

 2001 Prentice Hall7.12 Painting Pixels vs. Drawing Object Shapes When painting with pixels: –Use for simulating natural paint media –Use to embellish photographic images

 2001 Prentice Hall7.13 Painting Pixels vs. Drawing Object Shapes When drawing object shapes: –shapes and lines are cleaner and smoother –use for creating printed graphs, charts, and illustrations

 2001 Prentice Hall7.14 Rules of Thumb: Creating Smart Art Use ready-made graphics (clip art) when available and appropriate Honor copyright laws (buy protected work or use copyright-free clip art) Protect your own work by including the copyright symbol 

 2001 Prentice Hall D Modeling Software Illustrators and designers use this software to add depth to two dimensional objects

 2001 Prentice Hall7.16 Objects can be stretched…rotated … and combined with other objects 3-D Modeling Software

 2001 Prentice Hall7.17 CAD/CAM: From Pictures to Products Engineers,architects, and designers use CAD/CAM software to design or manufacture products

 2001 Prentice Hall7.18 CAD/CAM: From Pictures to Products –CAD (computer-aided design) is a modern drafting tool for designers Designs can be tested under various conditions before being built –CAM (computer-aided manufacturing) is a program that controls the manufacturing of parts CAM uses data from a CAD program to build the part that was designed

 2001 Prentice Hall7.19 Presentation graphics software is used to create visual aids for: –Lectures –Training and education sessions –Sales and product demonstrations –Meetings Presentation Graphics: Bringing Lectures to Life

 2001 Prentice Hall7.20 Presentation Graphics: Bringing Lectures to Life –Users can Enter text in outline form –Enhance text with font and style changes, clip art, audio, and video clips –Add Special effects and transitions to computer “slide shows” ( like the one you are viewing )

 2001 Prentice Hall7.21 Modern media often contains dynamic information that changes over time or in response to user input Dynamic Media: Beyond the Printed Page The raw materials include: –Animation –Desktop video –Audio –Interactive applications –Authoring software

 2001 Prentice Hall7.22 Animation: Graphics in Time Create the illusion of animation from still images with animated graphics

 2001 Prentice Hall7.23 Animation: Graphics in Time Tedious tasks have been automated with computers and animation software Toy Story was the first full-length animated movie created on a computer Each frame is a computer-drawn picture Some software allows for 3-D animation

 2001 Prentice Hall7.24 Rules of Thumb: Making Powerful Presentations Remember your goal Remember your audience Outline your ideas Be stingy with words and graphics Use a consistent design Keep slide focused Tell them what you’re going to tell them, then tell them, then tell them what you told them

 2001 Prentice Hall7.25 Desktop Video: Computers, Film and TV Video digitizers allow you to capture analog video images as digital data that can be stored and manipulated in the computer’s memory

 2001 Prentice Hall7.26 Morphing software metamorphoses one image into another –Click the picture to see this image morph to another image. Morphing Software

 2001 Prentice Hall7.27 A U D i O Hypertext:a cross reference system that links related data J a r g o n The Synthetic Musician MIDI:Musical Instrument Digital Interface Hypermedia:Combination of text, sound, numbers, graphics, music, animation, and other media in hyper-linked documents

 2001 Prentice Hall7.28 The Synthetic Musician: Computers and Audio Add sound to any multimedia project by using: –digitized audio (music or any sound) from a CD or audio file –synthesized audio (music or sound) using MIDI instrument

 2001 Prentice Hall7.29 Hypertext and Hypermedia allow you to quickly go to other parts of a document or other related documents. Examples include: –Help files that use hypertext to jump to different help screens –Web pages that allow you to jump between documents over the Internet Hypertext and Hypermedia

 2001 Prentice Hall7.30 Interactive Multimedia: Eye, Ear, Hand, and Mind Combine text, graphics, animation, video, music, or sound effects in such a way that the user takes an active part in the experience

 2001 Prentice Hall7.31 Interactive Multimedia: Eye, Ear, Hand, and Mind –Requirements: high-quality color monitors, fast processors, large memory, CD-ROM drives, speakers, and sound cards –The user controls the flow of information and is not a passive viewer

 2001 Prentice Hall7.32 Multimedia Authoring: Making Mixed Media Create and edit multimedia projects. –Begin with source documents (text, graphics, video clips, music, and sound files) –Multimedia authoring software allows you to combine the individual sources –Authoring software allows the project to be interactive (requiring the user to take an active role)

 2001 Prentice Hall7.33 Be consistent Make it intuitive Strive for simplicity Keep it lively Make sure the message gets through Provide navigational aids Test the product on novices Rules of Thumb: Making Interactive Multimedia Work

 2001 Prentice Hall7.34 –may increase communication –give people control over the flow of information –allow participation in democratic decision making Interactive Media: Visions of the Future Positive effects Negative effects –may further remove us from books, people, and the natural world “The future of writing is in space, not in time.” William S. Burroughs