That is exactly what I was looking for. Thank you for the pointer, it will make this a breeze to set up.
Cheers, Sebastian On Monday, 13 June 2016, Larry Gritz <[email protected]> wrote: > How about this: > > > #!/usr/bin/env python > > import sys > import OpenImageIO as oiio > > # Just take the arg of the input filename. > # Exercise for the reader: alter this program to loop over all arguments > # so you can use wildcards on the command line. > infilename = sys.argv[1] > > # Read the image > img = oiio.ImageBuf (infilename) > > # For each channel... > for ch in range(img.spec().nchannels) : > # extract just one channel into a second ImageBuf > onechan = oiio.ImageBuf() > oiio.ImageBufAlgo.channels (onechan, img, (ch,)) > > # optionally change bit depth, e.g.: > # onechan.set_write_format (oiio.UINT8) > > # Write the extracted channel as a new image, prepending the > # channel name on the front of the original file name. > chname = img.spec().channelnames[ch] > outfilename = chname + "." + infilename > onechan.write (outfilename) > print ("Channel {} is {} -> {}".format (ch, chname, outfilename)) > > > > On Jun 13, 2016, at 4:27 PM, Sebastian Kral <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > > Fully general unfortunately. > > I have to find a good way to configure which channels it should down > convert to a lower bit depth too. Not eager to tackle that though. > > On Monday, 13 June 2016, Larry Gritz <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> It can certainly split the channels. The question is how much you can >> script totally on the oiiotool command line, or whether it's easier to >> write a (very short) Python script to do it. >> >> Do you already know the number/names of the input channels? Or do you >> need something fully general that will work with any input? >> >> >> > On Jun 13, 2016, at 4:18 PM, Sebastian Kral <[email protected]> >> wrote: >> > >> > Hi, >> > >> > I searched through the archive but couldn't find a good answer. Is OIIO >> the right tool to split our multi channel EXR (tiled) into single channel >> EXRs (scanline)? Or would you guys recommend something else? >> > >> > If it is the right tool, is there a way to give it a path with a >> wildcard which it uses to save the channel to? >> > >> > Sorry if the question was answered before. I would think we are >> definitely not the first to think about this. >> > >> > Cheers, >> > Sebastian >> > >> > >> >> -- >> Larry Gritz >> [email protected] >> >> >> _______________________________________________ >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> > > > -- > Sent from mobile device > _______________________________________________ > Oiio-dev mailing list > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > > > -- > Larry Gritz > [email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');> > > > -- Sent from mobile device
_______________________________________________ Oiio-dev mailing list [email protected] http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
