On Nov 9, 2007, at 3:08 AM, Oliver Donald wrote:
I've got a video stream that has been split into numerous horizontal
strips, 32 in total. Is there a simple way to combine these strips
back
into a single image?
Chaining together 'Composite Add' operators into a tree works, but is
computationally expensive, hard to set up, and worst of all it
produces
graphical artifacts.
I can use multiple billboards, but again this requires quite a lot of
work.
What I really want is a common, shared destination that my 32 Crop
operators can all write to, is this possible?
Is there a better way altogether?
My first stab at this would be to draw multiple billboards (probably
within an iterator, and using a math patch to calculate a Y offset for
each billboard) and assuming Leopard & QC3.0, put the whole thing in a
"render in image" patch to get a single composite image as a result.
ie, result = render in image ( iterator ( billboard
( math(iterator index), input source(iterator index) ) ) )
Allan
___________
Allan Schaffer
Graphics Evangelist
Worldwide Developer Relations
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