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Image File Formats - PowerPoint PPT Presentation


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Image File Formats. Some Common Image Formats. JPG – Used for most digital photos but “ lossy ” GIF – Best for line drawings. 256 colors maximum. No loss BMP – Bitmap. Every pixel stored individually TIF – Standard in many technical applications. No loss PNG – Lossless image format

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PowerPoint Slideshow about 'Image File Formats' - barny


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some common image formats
Some Common Image Formats
  • JPG – Used for most digital photos but “lossy”
  • GIF – Best for line drawings. 256 colors maximum. No loss
  • BMP – Bitmap. Every pixel stored individually
  • TIF – Standard in many technical applications. No loss
  • PNG – Lossless image format
  • RAW – Data as captured by digital camera
test image in various formats
Test Image in Various Formats
  • JPG 67 kb
  • GIF 185 kb (256 colors, optimized)
  • BMP 899 kb (640*479*3/1024 = 898.125)
  • TIF 902 kb
  • PNG 418 kb
  • RAW 900 kb
gif versus jpg
GIF Versus JPG
  • GIF: 11 kb JPG: 78 kb
gif versus jpg1
GIF Versus JPG
  • For photographic images JPG is better both for quality and file size
  • For line art GIF is better both for quality and file size
  • The future of line art is probably in vector file formats like SVG (Scalable Vector Graphics)
  • VML (Vector Markup Language) is Microsoft backed
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