Hi,
I’m currently merging EXR tile renders using OIIO, as seen below, using
ImageBufAlgo.add. This works fine as long as the EXR background/canvas of
each tile is completely black.
However, for some V-Ray AOVs (or “Render elements” as they are called in
V-Ray), the background is not always black. So an “add” would produce wrong
results when merging the tiles.
Is it possible to “over” the tiles on top of each other rather than using
“add” and without knowing the tile sizes?
…or do you have any other suggestions?
The tiles do not always have an alpha channel.
import osimport OpenImageIO as oiiofrom OpenImageIO import ImageInput,
ImageOutputfrom OpenImageIO import ImageBuf, ImageSpec, ImageBufAlgo
folder = '/some/folder'
merged_buf = ImageBuf()
buffers = []
for filename in os.listdir( folder ):
filepath = os.path.join(folder, filename)
buffers.append( ImageBuf( filepath ) )
for i in range(0, len(buffers)):
if i == 0:
ImageBufAlgo.add( merged_buf, buffers[i], buffers[i+1])
if (i > 1) and (i <= len(buffers) ):
ImageBufAlgo.add( merged_buf, merged_buf, buffers[i])
merged_buf.write( os.path.join(folder, 'merged.exr') )
Regards,
Fredrik
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