Threshold-Operator  Example 

This operator converts an image into black&white using a grayscale-level,
this may be especially useful for the creation of alpha-channels.

Parameters

Name        Possible Values/Unit            Description

Input       STREAM, TEMP1, ..., TEMP8       input buffer
Ouput       STREAM, TEMP1, ..., TEMP8       output buffer
Level       0...255                         grayscale-level, all pixels with a
                                            brightness higher than this value
                                            are turned into white ones, all other
                                            are cleared