Barco MCM-50, User Manual

Page: 90 / 147

11. Expert operation
Image 11-22
Note: The Transport Delay is by default set to 200.
3. Exit the menu.
11.2 Soft Edge and Black Level
Overview
• Soft Edge and Black Level explained
• Soft Edge area shape
• General Soft Edge work fl ow
• Alpha planes
• Beta planes
• The Soft Edge selection dialog
• The Soft Edge edit dialog
• Selecting an anchor point
• Moving an anchor point in small steps
• Moving an anchor point in large steps
11.2.1 Soft Edge and Black Level explained
Soft Edge and Black Level principle
To achieve a seamless multiple channel image on one single large screen, we can make the adjacent images from two or more
devices overlap in part. In the overlap areas where the image of two channels is joined, we
fi nd twice the brightness, so we need to
apply a gradual feather or Soft Edge blending on both channels to reduce the higher brightness to normal. This Soft Edge blending
can be realized with photographic plates put in front of the projection lens (especially used in case of dark sceneries) or with the
Electronic Soft Edge Matching (ESEM) feature of the device (especially used in case of bright images).
Image with hard edge
Image without soft edge
adjustment
Image with soft edge
adjustment
Image 11-23
Example: Soft edge blending
86 R5909057 MCM-50 17/05/2016