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Digital Media: COMS 106

Digital Media: COMS 106

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Digital Media: COMS 106

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  1. Digital Media: COMS 106 Images parente@csus.edu

  2. Digital Media Before You Create Images Plan your approach Organize your tools

  3. Digital Media Making Still Images Stills are drawn in one of two ways • Bitmaps • Vector-drawn graphics

  4. Digital Media Making Still Images Stills are drawn in one of two ways Images are usually compressed

  5. Digital Media Bitmaps Clip art

  6. Digital Media Bitmaps Clip art Bitmap software

  7. Digital Media Bitmaps Clip art Bitmap software Capturing Scanning

  8. Digital Media Vector Drawings • Vector graphics are defined using formulas RECT 0,0,200,200,RED,BLUE

  9. Digital Media Vector-Drawings vs. Bitmaps Vector drawings are easily scaled Vector files are usually smaller Calculation time can draw resources Bitmaps cannot easily be converted to vector Vector drawings require plug-ins

  10. Digital Media 3-D Drawing 3-D software usually offers: • Directional lighting • Motion • Different perspectives

  11. Digital Media 3-D Drawing 3-D objects combine various shapes

  12. Digital Media 3-D Drawing Shapes can be extruded…

  13. Digital Media 3-D Drawing …or lathed

  14. Digital Media 3-D Drawing Gourand shading Flat shading Ray tracing Phong shading A scene can use different types of shading

  15. Digital Media Panoramas QuickTime VR

  16. Digital Media Color Quantum Theory • Atoms produce unique colors as light passes through • Light travels in the form of photons, or quanta Color is the frequency of a light wave • The rainbow shows the spectrum of visible colors • Colors below the range are infrared • Colors above the range are ultraviolet

  17. Digital Media Color Computerized Color • Computers combine red, green, and blue (RGB) light • Bit depth determines the number of possible colors 1-bit 2 colors 4-bit 16 colors 8-bit 256 colors 24-bit 16,777,216 colors

  18. Digital Media Color Computerized Color Television Color • Color is generated using the YUV color model • Luminance (Y) • Blue minus luminance (U) • Red minus luminance (V)

  19. Digital Media Color Computerized Color Television Color Print Color • Color is generated using the CMYK color model • Cyan (C) • Magenta (M) • Yellow (Y) • Black (K)

  20. Digital Media Image File Formats TIFF or .tif or Pict or .pic JPEG or .jpg GIF or .gif Cross Platform Issues Internet Issues

  21. Digital Media Image Software

  22. Digital Media Assignment for this week!!!