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brief informative on digital imaging used to help tutor prospective students on eduwizards.com

brief informative on digital imaging used to help tutor prospective students on eduwizards.com

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  • http://www.bitpipe.com/tlist/Digital-Imaging.html
  • http://en.wikipedia.org/wiki/Raster_graphics
  • http://en.wikipedia.org/wiki/Image_file_formats#Raster_formats
  • http://en.wikipedia.org/wiki/Image_file_formats#Raster_formats
  • http://en.wikipedia.org/wiki/Image_file_formats#Raster_formats

Transcript

  • 1.
      melissaheiser.com
    • This is free and formatted for web-use: Review slides currently not working, but can still be used manually as study tool.
  • 2.
    • What is Digital Imaging
    • 3. Software Available
    • 4. Raster Images
    • 5. File Format Types
    • 6. Saving a File: Types of Compression
    • 7. Review
  • 8.
    • “ A method of image editing in which a picture is scanned from an original document to digital information in the form of pixels that can be read and manipulated by a computer, and subsequently reformed as a visible image”(Techtarget, 2009)
    • 9. Is also known as:
      • Digital Image Processing
      • 10. Digital Photographic Imaging
  • 11.
    • The most popular software for use in manipulation of photos is Photoshop which is created by Adobe Systems Incorporated. Competitors are (not limited to) Paint Shop Pro or a free software Gimp .
    • 12. It all depends on your budget, project needs, and in some cases clients/potential employers prefer one over the other.
  • 13.
      “ Raster graphics image or bitmap is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium” (Wikipedia, 2009)
      EXAMPLE FROM THE NET
    Translation: little boxes of color and when enlarged, instead of a clean image, its those wonderful boxes of color in blurry vision. Don’t get your eyeglasses, just know the limitations.
  • 14.
      RASTER IMAGE FORMATS
    • JPEG
      • JPEG (Joint Photographic Experts Group) 8 bits per color, (Red,Blue,Green), consequently 24 bit total
      • 15. Typical format cameras save photos in
    • GIF
      • GIF (Graphics Interchange Format) is limited to an 8-bit palette-256 colors.
      • 16. Simple graphics, logos, cartoon images (clipart), some animations
  • 17.
      RASTER IMAGE FORMATS
    • The PNG (Portable Network Graphics)
      • True
      • 18. color (16 million colors)
      • 19. “ PNG file excels when the image has large, uniformly colored areas. The lossless PNG format is best suited for editing pictures”(Wikipedia, 2009)
      • 20. Save final project as a JPEG however due to smaller file size and supported better by older browsers.
    • BMP
      • The BMP file format (Windows bitmap)
        • For graphics within that system
        • 21. Large file, simple, however only in the Windows OS
    • Other of many formats
  • 23.
      RASTER IMAGE FORMATS
    • The PNG (Portable Network Graphics)
      • True
      • 24. color (16 million colors)
      • 25. “ PNG file excels when the image has large, uniformly colored areas. The lossless PNG format is best suited for editing pictures”(Wikipedia, 2009)
      • 26. Save final project as a JPEG however due to smaller file size and supported better by older browsers.
    • BMP
      • The BMP file format (Windows bitmap)
        • For graphics within that system
        • 27. Large file, simple, however only in the Windows OS
    • Other of many formats
  • 29.
      LOSSY COMPRESSION
    • Image Quality is more important than file size
    • 30. Therefore will end up with a larger file size
      LOSSLESS COMPRESSION
    • Need smaller file size
    • Removes bits of image that the computer feels you wouldn’t be able to figure out its gone anyways
    • Unfortunately the higher the compression the more you begin to notice the image deteriorating. This is called
      “ Compression artifacting”
  • 31.
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      B)
      False
  • 32.
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  • 33.
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      A)
      .bmp
      B)
      .gif
      C)
      .jpeg
      D)
      .ppt
  • 34.
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      Your answer:
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      A)
      True
      B)
      False
  • 35.
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      True
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  • 36.
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      You answered this correctly!
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      You did not answer this question completely
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  • 37.
      Correct - Click anywhere to continue
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      You answered this correctly!
      Your answer:
      The correct answer is:
      You did not answer this question completely
      You must answer the question before continuing
      A)
      .bmp
      B)
      .ppt
      C)
      .jpeg
      D)
      .rar
      Submit
      Submit
      Clear
      Clear
  • 38.
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