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Intro ch 08_b

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  • Teaching tip Describe bitmapped image as drawing on graph paper. Fill in the blocks to create the image. I use a graph paper circle to illustrate.
  • Teaching tip Remind your students of the algebra classes they took in high school. The functions they plotted on the Cartesian plane are similar to vector equations.
  • Teaching tip Table 8B.1 on page 325 lists several image types.
  • Discussion point Discuss when JPGs are appropriate. A picture of my daughter will lose some detail in her shirt. This is OK. However, a JPG of my most recent CAT scan may lose detail of a tumor. This is not OK.
  • Teaching tip Free or inexpensive clip art is often of too poor quality to use in graphic production. They are best suited for interoffice or personal communication.
  • Teaching tip Figure 8B.7 on page 327 demonstrates two images created with a paint program.
  • Teaching tip This image is an example of the solution to the project found in the Instructor’s Manual.
  • Teaching tip Have fun with this one. Remind the students of the Jurassic Park movies. Sarcastically say that the dinosaurs were not real. But they sure looked good.
  • Transcript

    • 1. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
    • 2. Chapter 8B Graphics and Multimedia
    • 3. Graphic File Formats
      • Bitmapped images
        • Most common image type
        • Also called raster images
        • Image is drawn using a pixel grid
        • Each grid contains a color
        • Color depth
          • Number of usable colors
        • Used to store drawings or photographs
        • Resizing image can reduce quality
    • 4. Bitmap Resized This image was drawn as a straight line.
    • 5. Graphic File Formats
      • Vector images
        • Drawn using mathematical formulas
        • Formulas describe the line properties
        • CAD and animation software
        • Resizing image will not reduce quality
    • 6. Graphic File Formats
      • File formats and compatibility
        • Method for storing an image
        • Each method has pros and cons
        • Some formats are proprietary
        • Graphic software can handle all formats
    • 7. Graphic File Formats
      • Common bitmapped file formats
        • BMP
        • EMF
        • GIF
        • JPG
        • PICT
        • PNG
        • TIFF
    • 8. Graphic File Formats
      • Vector file formats
        • Most vector formats are proprietary
        • Two universal formats exist
        • DXF
        • IGES
    • 9. Acquiring Images
      • Scanners
        • Like a photocopier
        • Image is saved onto disk
        • Scanners import a variety of formats
    • 10. Acquiring Images
      • Digital cameras
        • Stores digitized images
        • Uses long term storage
        • Image is usually a JPG file
    • 11. Acquiring Images
      • Digital video cameras
        • Stores full motion video
        • Uses long term storage
        • Movie can be transferred to DVD
    • 12. Acquiring Images
      • Clip art
        • Originally a book with images
        • Now a CD with images
        • Most office suites include a selection
        • Additional clip art is online
    • 13. Graphics Software
      • Paint programs
        • Create bitmap images
        • Includes sophisticated tools
        • Artists draw with several brushes
        • Objects drawn become permanent
        • Windows Paint
    • 14. Graphics Software
      • Draw programs
        • Create vector based images
        • Used when accuracy is critical
        • Objects have an outline and fill
          • Both have line style and color
          • Can fill using pictures
        • Adobe Illustrator
    • 15. Graphics Software
      • Photo-editing software
        • Modify and manipulate digital images
        • Work at the pixel level
        • Images can be enhanced
        • Picture flaws can be repaired
        • Pictures can be completely changed
        • Photoshop and GIMP
    • 16. Enhancing a Photo
    • 17. Graphics Software
      • Computer Aided Drafting (CAD)
        • Generates vector files
        • Engineering and design fields
        • Drawings accurate to the millimeter
        • AutoCAD
    • 18. Graphics Software
      • 3D modeling software
        • Generates three dimensional images
        • Image can be shaped on screen
        • Image is animated frame by frame
    • 19. Graphics Software
      • Computer generated imaging
        • Generates photo realistic images
        • Used for movies and television
        • Software eliminates tedious parts
    • 20. Multimedia Basics
      • Medium
        • Way of sharing information
        • Voice, pictures, text
        • More effective with multiple mediums
        • Multimedia presents information with one medium
    • 21. Multimedia Basics
      • Interactivity
        • Users and program respond
        • Users can control the content
        • Main difference between TV and computer
    • 22. Chapter 8B End of Chapter

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