Images - Jpg

  • JPEG (Joint Photographic Expert Group)
    • 24 bit = 16.7 million colors
    • Fixed bit-depth
    • "Lossy" compression (regions of 'similar' color)
    • Can vary quality by increasing size of 'similar' regions.
      hanson hanson
      100% (62K) 70% (8K)
      hanson

      30% (3K)
      (200% scale to emphasize regions)

  • JPEG Pitfalls
    • Small details/large blocks of color generate artifacts
      "Artifacting"
    • Quality/Size tradeoffs (better quality=larger file)

seven logo

artifacting

  • Speeding downloads