Hello, Quick bump in case the previous email was lost in the inbox.
- Scott On Thu, Mar 17, 2016, 6:08 PM Scott Wilson <[email protected]> wrote: > Hello, > > I am trying to open and save a PNG that contains RGB values that are not > associated with the A (or non-premultiplied) with OIIO and Python. I am > trying the following code to tell OIIO ImageBuf to read unassociated, but > it appears that it isn't respecting it. I'm restricted to OIIO 1.5.x due to > the only builds on Windows that I found with Python being from > www.lfd.uci.edu/~gohlke/pythonlibs/#openimageio. Am I doing something > wrong, or would I have to use ImageInput -> ImageBuf? If so, is there any > way to convert the ImageInput to ImageBuf without doing > ImageBuf.setpixel(x, y, z, pixel)? > > Thanks in advanced! > > # The code > import OpenImageIO as oiio > > if __name__ == '__main__': > src = "c:/temp/blah/src.png" > dst = "c:/temp/blah/dst.png" > > config = oiio.ImageSpec() > # Wasn't 100% sure what the attribute should be, so trying all possible > ones. :) > config.attribute("oiio:UnassociatedAlpha", 1) > config.attribute("oiio:unassociatedalpha", 1) > config.attribute("UnassociatedAlpha", 1) > config.attribute("unassociatedalpha", 1) > buf = oiio.ImageBuf(src) > # Read the file with the config > buf.reset(src, 0, 0, config) > # Write to a new png > buf.write(dst) >
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