The mail server from openimageio.org seems at the moment to be, if not broken, then at least significantly delaying things in the queue.
So resending with Eric directly CC'd so he doesn't think I'm ignoring. I'm having trouble reproducing. Which version of OIIO are you using? On Mon, Oct 3, 2016 at 11:40 AM, Eric Tabellion < [email protected]> wrote: > Hi, > > I'm trying to convert grayscale (half) float linear .exr images into 8-bit > sRGB render-ready .tx files, while using dithering in the process with > --dither. > > When the input image is 3-channel color data the conversion works fine. > However when the image is single channel, --dither seems to choke up a > garbled image. Converting the image from 3-channel down to single channel > at the same time as using --dither won't work either. > > For example either of these two commands below will produce garbled images > using RGBA inputs: > > oiiotool input.exr --ch "R" --dither --colorconvert linear sRGB -d uint8 > -o output.tif > > maketx input.exr --nchannels 1 --dither --colorconvert linear sRGB -d > uint8 --oiio --compression zip -o output.tx > > I'm trying to get this all done in one maketx pass, but so far the only > way I got this to work is doing this: > > oiiotool input.exr --dither --colorconvert linear sRGB -d uint8 -o tmp.tif > maketx tmp.tif --nchannels 1 --oiio --compression zip -o output.tx > > This doesn't work though if the input image is already single-channel. > Anyone else can reproduce this ? Could this be a --dither bug when > dithering single channel images? > > Thanks! > Eric > > -- > --------------------------------------------------------------- > Eric Tabellion [email protected] > R&D Staff (650)-562-9146 > PDI/Dreamworks > > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > > -- Larry Gritz [email protected]
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