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timo.paivarinta@helsinki.fi 050-523 5403 (59003) biocenter.helsinki.fi/bi/editor/DIP

timo.paivarinta@helsinki.fi 050-523 5403 (59003) www.biocenter.helsinki.fi/bi/editor/DIP.ppt. Schedule. What’s it about ?. Photoshop Corel Power Point Excel PDF. Color systems Image formats Resolutions. RGB. Additional color system red, green and blue light

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timo.paivarinta@helsinki.fi 050-523 5403 (59003) biocenter.helsinki.fi/bi/editor/DIP

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  1. timo.paivarinta@helsinki.fi050-523 5403 (59003)www.biocenter.helsinki.fi/bi/editor/DIP.ppt

  2. Schedule

  3. What’sitabout?

  4. Photoshop • Corel • Power Point • Excel • PDF

  5. Color systems • Image formats • Resolutions

  6. RGB • Additional color system • red, green and blue light • 256 levels of every color (8-bit.) • more than 16 million colors (2563, 24-bit) • used in web, in screens and for example MS:s Office-programs

  7. RGB

  8. CMYK • Subtractive color system • Cyan, Magenta, Yellow and Black (K) paint • Press-houses • levels are posted in percents • 32-bit • Rasterizing

  9. CMYK

  10. LAB • Three-dimensioned • Used mostly in measuring and analyzing colors • A- and B-axis (2-d coordinates) about the color • L-axis (perpendicular) about the tint.

  11. Indexedcolor • Used mostly in GIF-pictures for web • Only 256 colors • Transparency feature • Not suitable for press-use.

  12. grayscale • 256 tints of black • In tables, grayscale images etc.

  13. Colorcircle

  14. Imageformats • PSD • JPG • EPS • TIFF • GIF • PNG

  15. PSD • Photoshop-format • Layers • Original data

  16. JPG • Effective compressing algorithm • “Lossy” (loses information) • Usage: www, MS-office

  17. JPG 150 dpi/saved once quality 6 150 dpi/saved once quality 0 150 dpi/saved twice quality 0

  18. TIFF • Lossless compressing (LZW) • Independent for platform (PC, Mac) • Usage: press (Office)

  19. EPS • Encapsulated PostScript • “Raw data” • Can also be compressed (jpg) • Usage: press

  20. GIF • Indexed color (256) • Lossless • Transparency • Can be saved also interlaced • Usage: www, MS-Office

  21. GIF JPG/quality 12 GIF

  22. PNG • Lossless • Indexed-color, grayscale, and true-color supported(up to 32-bit) • transparency

  23. Resolutions • www: 72 dpi (exact size) • Word & PP: 72-150 dpi • Press: 300 dpi (exact size)

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