Automation Engine Reference Guide - Esko Help Center

8 Automation Engine
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If this option is checked, a 5 channel TIFF referred to by link, results in a four channel internal
CT and the 5th channel is used as opacity channel. The areas of the Photoshop alpha channel
that were 100% masked, result in 100% image in ArtPro. The areas that were 0% masked,
become completely transparent. Any value in between (example: soft edges on the mask)
result in a partial transparency (see pictures). If the option Invert is on, the opacity channel is
inverted, using the Invert button in the Mapped Picture paint style. This way, the alpha channel
can be made up in two ways, positive or negative. With Into Opacity it is also possible to
work with extensions (see above): Example: B/W is off, gray is on, extension = .gr This means
all B/W is not affected and all grayscales with an extension .gr is put into opacity. All other
grayscales are not affected.
OPI
This is used for rerouting linked images. The rerouting could happen based on the name of the image
or based on the path of the images. There are mainly two reasons why rerouting may need to take
place:
• Low resolution images need to be replaced by (rerouted to) high resolution images.
• Missing images need to be rerouted to their correct (current) location.
Note: Re-routing can only be done when OPI links are available for the images and the Use Link
and Place All or Use Link and Import EPS options are set.
1. Perform OPI swap
This option enables the rerouting as defined in this menu. If the option has not been set, all settings
are ignored and no rerouting takes place when OPI links are used by the system.
2. Sample Extension / Hires Extension
The Sample Extension and Hires Extension fields are used to swap the extension of the image
that is linked. This is typically used for OPI servers which are set to add an extension to or replace
an existing extension with another when low resolution images are generated from high resolution
images.
Every extension that is entered in the Sample Extension field is cut off from the linked file before
it is actually searched, while every extension that is entered in the Hires Extension field is added
to the linked file before it is actually searched.
If the Sample Extension field contains “.lay” and the Hires Extension field is empty and the image
that is linked is “image.lay”, then the system actually searches for “image”, the “.lay” extension
is cut off.
If the Sample Extension field contains “.lr” and the Hires Extension field contains “.hr”, and
the image that is linked is “image.lr”, then the system actually searches for “image.hr”, the “.lr”
extension is cut off and the “.hr” extension is added.
It is equally possible to enter multiple extensions in the fields, separated by spaces. If the
extensions of the file referred to in the link matches an extension entered in the Sample Extension
field, the extension is cut off and when present, it is replaced by the extension in the Hires
Extension field at the same position. Extensions that only need to be cut off and not replaced
should be at the end of the list.
Example:
• Sample Ext. field: “.lr .low .lay”
• Hires Ext. field: “.hr .high”
The result of this operation is: