Previous Next

                                            277
SECTION 4.5                                                                      Color Spaces



Examples 4.13 through 4.16 show the use of NChannel color spaces. Example 4.13
shows the use of calibrated CMYK process components. Example 4.14 shows the
use of Lab process components.

Example 4.13

  10 0 obj                                                % Color space
     [ /DeviceN
           [/Magenta /Spot1 /Yellow /Spot2]
           alternateSpace
           tintTransform1
           <<                                             % Attributes dictionary
               /Subtype /NChannel
               /Process
                  << /ColorSpace [/ICCBased CMYK_ICC profile ]
                      /Components [/Cyan /Magenta /Yellow /Black]
                  >>
               /Colorants
                  << /Spot1 [/Separation /Spot1 alternateSpace tintTransform2]
                      /Spot2 [/Separation /Spot2 alternateSpace tintTransform3]
                  >>
           >>
     ]
  endobj

Example 4.14

  10 0 obj                                                   % Color space
     [ /DeviceN
         [/L /a /b /Spot1 /Spot2]
         alternateSpace
         tintTransform1
         <<                                                  % Attributes dictionary
             /Subtype /NChannel
             /Process
                 << /ColorSpace [ /Lab << /WhitePoint ... /Range ... >> ]
                     /Components [/L /a /b]
                 >>
             /Colorants
                 << /Spot1 [/Separation /Spot1 alternateSpace tintTransform2 ]
                     /Spot2 [/Separation /Spot2 alternateSpace tintTransform3]
                 >>
         >>
     ]

Previous Next