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Graphics, Hypermedia, and Multimedia

Graphics, Hypermedia, and Multimedia. Focus on Computer Graphics. Computer graphics include: Painting Software Digital Image Processing Drawing Software 3-D Modeling Software CAD/CAM Presentation Software. Painting Software. G r A p h i c S.

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Graphics, Hypermedia, and Multimedia

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  1. Graphics, Hypermedia, and Multimedia

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

  3. Painting Software GrAphicS 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 Resolution: the number of pixels (dots) per inch J a r g o n  Prentice Hall

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

  5. Painting Software Painting tools are used to create drawings A variety of special effects can be added  Prentice Hall

  6. Painting Software Outlinedshapes can be filled with colors Windows Paint  Prentice Hall

  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  Prentice Hall

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

  9. Digital Image Processing:Software Adobe Photoshop • Acquires images • Manipulates pixels • Layers – edited and stored independently • Used by professionals • Saves in other formats  Prentice Hall

  10. Digital Image Processing:Software • Coral PhotoPaint • Adobe Photoshop Elements • Microsoft Picture It! • Jasc Paint Shop • Apple iPhoto  Prentice Hall

  11. Drawing:Object-Oriented Graphics Object-Oriented Software offers drawing tools similar to painting software Pointing devices are used to create various shapes  Prentice Hall

  12. Drawing Shapes in Object-Oriented Software: • Are stored as formulas (not pixels) that describe how to draw that shape • Drawings are smoother and require less memory than bit-mapped drawings • Resolution is not fixed  Prentice Hall

  13. Drawing: Software • Adobe Illustrator • Macromedia Freehand • Corel Draw  Prentice Hall

  14. Painting Pixelsvs.Drawing Object Shapes When painting with pixels: • You have more control over textures, shading, and fine detail • Use for creating screendisplays (for video games, multimedia presentations, and Web pages)  Prentice Hall

  15. Painting Pixelsvs.Drawing Object Shapes When painting with pixels: • Use for simulatingnatural paint media • Use to embellishphotographic images  Prentice Hall

  16. Painting Pixelsvs.Drawing Object Shapes When drawing object shapes: • shapes and lines are cleaner and smoother • use for creating printed graphs, charts, and illustrations  Prentice Hall

  17. Graphics File Formats • Native file formats • For commercial printing • Tiff – bit-mapped, images from scanners, widely supported • EPS – encapsulated postscript  Prentice Hall

  18. Graphics File Formats Platform dependent Paint programs • BMP – Windows bit-map • PICT – Macintosh, both bit-mapped and object-oriented  Prentice Hall

  19. Graphics File Formats:for the WEB GIF • 256 possible colours • Lossless compression • JPEG • Photo-realistic • Lossy compression  Prentice Hall

  20. Presentation Graphics:Bringing Lectures to Life Presentation graphics software is used to create visual aids for: • Lectures • Training and education sessions • Sales and product demonstrations • Meetings  Prentice Hall

  21. Presentation Graphics:Bringing Lectures to Life • Users can Enter textin outline form • Enhance text with font and style changes, clip art, audio, and videoclips • Add Special effects and transitions to computer “slide shows”(like this one)  Prentice Hall

  22. CAD/CAM: From Picturesto Products Engineers,architects, and designersuse CAD/CAMsoftware to designor manufactureproducts  Prentice Hall

  23. 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 programto build the part that was designed  Prentice Hall

  24. Dynamic Media:Beyond the Printed Page • Modern media often contains dynamic information that changes over time or in response to user input  Prentice Hall

  25. Animation: Graphics in Time Create the illusionof animation fromstill images with animated graphics  Prentice Hall

  26. Animation: Graphics in Time • Tedious tasks have been automated with computers and animation software • Artist draws the key frames only • In-between frames are computer-drawn • Toy Story was the first full-length animated movie created on a computer  Prentice Hall

  27. 3-D Modeling Software Illustrators and designers use this software to add depth to two dimensional objects  Prentice Hall

  28. 3-D Modeling Software Objects can be stretched…rotated … and combined with other objects  Prentice Hall

  29. 3-D Modeling Software Volume based • Medicine and scientific visualization • Surface based • Photo-realistic • TV, movies, computer games  Prentice Hall

  30. 3-D Modeling Software Surface based • High performance computers and custom software • E.G. Jurassic Park: dinosaurs are 6.5 minutes • Required 50 people, 18 months and $15 million equipment  Prentice Hall

  31. 3-D Modeling Process Model description • Solids • Polygon surface • Wire-frame • Artist models (defines) a 3-D actor  Prentice Hall

  32. 3-D Animation • Places the 3-D actor into the scene • Scene is composed of multiple actors and background and timing and camera movement • Scenes are rendered: computer software does the lighting, shading, perspective, hidden surface removal  Prentice Hall

  33. 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  Prentice Hall

  34. 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  Prentice Hall

  35. 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)  Prentice Hall

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