Stand graphdocs

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Stand graphdocs

  1. 1. STANDARDS OF GRAPHIC DOCUMENTS <ul><li>. </li></ul>
  2. 2. Graphic Documents <ul><li>Bitmap </li></ul><ul><li>Vector </li></ul>
  3. 3. Bitmap Documents <ul><li>Pixel </li></ul><ul><li>Resolution e.g. 800x600 pixels, 3 Megapixels </li></ul><ul><li>4x3, 16x9 </li></ul><ul><li>Raster </li></ul>
  4. 8. BMP (BitMaP) <ul><li>DIB (Device Independent Bitmap) </li></ul><ul><li>No compression </li></ul><ul><li>No transparency (24-bit) </li></ul><ul><li>32-bit DIB alpha channel- XP logo </li></ul>
  5. 9. JPEG (Joint Photographic Experts Group) <ul><li>ISO 10918-1 </li></ul><ul><li>Compression enabled format (levels) </li></ul><ul><li>10:1 compresson with little loss </li></ul><ul><li>No transparency (24-bit) </li></ul><ul><li>Best for smooth variation of tone and colors </li></ul><ul><li>Not good for sharp contrasts </li></ul>
  6. 10. GIF (Tagged Image File Format) <ul><li>Compression enabled format </li></ul><ul><li>3:1 compresson lossless + LZW </li></ul><ul><li>Best for sharp-edged line art: logos, simple images </li></ul><ul><li>Supports animations </li></ul><ul><li>Can have only 256 colors in one image </li></ul><ul><li>Allows transparency </li></ul>
  7. 11. PNG (Portable Network Graphics) <ul><li>RFC 2083/ ISO/EC 15948:2004 </li></ul><ul><li>Compression enabled format- lossless Deflate </li></ul><ul><li>True color and alpha transparency </li></ul><ul><li>Best for sharp-edged line art: logos, simple images </li></ul><ul><li>Faster interlacing than GIF </li></ul><ul><li>Does not support animations </li></ul>
  8. 12. TIFF ( Tagged Image File Format ) <ul><li>Allows handling images and data in a single file (size, image-data arrangement, applied compression), even jpeg, layers and pages </li></ul><ul><li>Compression enabled format- lossless LZW </li></ul><ul><li>Bought by Adobe in 2009 </li></ul><ul><li>Limited to 4 GB </li></ul><ul><li>Custom tagging </li></ul>
  9. 13. RAW <ul><li>Direct sensor readout </li></ul><ul><li>Myriad of RAW formats </li></ul><ul><li>DNG (Digital Negative) standards proposal by Adobe </li></ul><ul><li>Metadata, Compression (lossless and lossy), sometimes encription </li></ul><ul><li>Open source dcraw </li></ul>
  10. 14. Vector Documents <ul><li>Use mathematical equations to present data </li></ul><ul><li>Points, lines, curves, polygons </li></ul><ul><li>Easier to manipulate with </li></ul><ul><li>Don’t „loose” quality in any resolution </li></ul><ul><li>Grouping objects </li></ul><ul><li>Generally smaller size than bitmap </li></ul>
  11. 15. SVG (Scalable Vector Graphics) <ul><li>W3C open standards </li></ul><ul><li>Defined using XML tagging </li></ul><ul><li>Compatible with CSS specification </li></ul><ul><li>Compression gzip or other </li></ul><ul><li>http://upload.wikimedia.org/wikipedia/commons/6/6b/Bitmap_VS_SVG.svg </li></ul>
  12. 16. CDR (Corel Draw) <ul><li>Closed standard </li></ul><ul><li>Ever changing </li></ul>
  13. 17. Have fun!

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