Alpha-Operator  Example 

This operator modifies the brightness of an image using
an alpha-channel.

Parameters

Name        Possible Values/Unit            Description

Input       STREAM, TEMP1, ..., TEMP8       input buffer
Ouput       STREAM, TEMP1, ..., TEMP8       output buffer
Alpha       STREAM, TEMP1, ..., TEMP8       alpha buffer
Left        pixels                          left edge of the alpha image
Top         pixels                          top edge of the alpha image