There is no obvious way to tell if it worked or not: clean.exr is now a constant color, and the "garbling" looks like some pixel scanline / block interleaving bug. Looks interesting, a bit like a mix between pixelation and what you'd get out of rendering on fields. I'll see if I can repro the image format and send you some non-sensitive useable data.
On Tue, Oct 4, 2016 at 4:13 PM, Larry Gritz <[email protected]> wrote: > Does this work? > > oiiotool secret.exr -fill:color=.1,.2,.3,1 4096x4096 -o clean.exr > oiiotool clean.exr --ch "R" --dither --colorconvert linear sRGB -d uint8 > -o output.tif > > does that fail in the same way? > > (I'm trying to coax it into taking whatever's odd with your file, > substituting a color that clobbers all your secret images, and hoping it > still fails in some way so you can send me the file.) > > > On Tue, Oct 4, 2016 at 4:02 PM, Eric Tabellion < > [email protected]> wrote: > >> There is something fishy with our files that is tripping this bug. If I >> paint an image in gimp, save it out, convert to an RGB .exr and run it >> through the first command, it works just fine. >> >> Here is what I can say about one of our files that causes the issue: >> >> iinfo -v input.exr >> input.exr : 4096 x 4096, 4 channel, half openexr >> channel list: R, G, B, A >> tile size: 256 x 256 >> oiio:ColorSpace: "Linear" >> compression: "zip" >> PixelAspectRatio: 1 >> screenWindowCenter: 0 0 >> screenWindowWidth: 1 >> >> exrheader input.exr >> >> file input.exr: >> >> file format version: 2, flags 0x200 >> channels (type chlist): >> A, 16-bit floating-point, sampling 1 1 >> B, 16-bit floating-point, sampling 1 1 >> G, 16-bit floating-point, sampling 1 1 >> R, 16-bit floating-point, sampling 1 1 >> compression (type compression): zip, multi-scanline blocks >> dataWindow (type box2i): (0 0) - (4095 4095) >> displayWindow (type box2i): (0 0) - (4095 4095) >> lineOrder (type lineOrder): increasing y >> pixelAspectRatio (type float): 1 >> screenWindowCenter (type v2f): (0 0) >> screenWindowWidth (type float): 1 >> tiles (type tiledesc): >> single level >> tile size 256 by 256 pixels >> type (type string): "tiledimage" >> >> >> On Tue, Oct 4, 2016 at 3:57 PM, Eric Tabellion < >> [email protected]> wrote: >> >>> # This fails (repeat of my first email) >>> oiiotool input.exr --ch "R" --dither --colorconvert linear sRGB -d uint8 >>> -o output.tif >>> >>> # This fails too (removing --colorconvert): >>> oiiotool input.exr --ch "R" --dither -d uint8 -o output.tif >>> >>> # This works!!! (removed -d uint8). But then my colorspace is off... >>> oiiotool input.exr --ch "R" --dither --colorconvert linear sRGB -o >>> output.tif >>> >>> >>> On Tue, Oct 4, 2016 at 3:47 PM, Larry Gritz <[email protected]> wrote: >>> >>>> If you don't do the --colorcorrect, but you do everything else, do you >>>> still get something garbled? >>>> >>>> >>>> On Tue, Oct 4, 2016 at 3:42 PM, Eric Tabellion < >>>> [email protected]> wrote: >>>> >>>>> Feel free to ignore this request entirely on the maketx side. I >>>>> realize it's a version of maketx I modified weeks ago, adding a "--dither" >>>>> command-line option (a seemingly trivial addition when looking at the >>>>> oiiotool code). >>>>> >>>>> The request for oiiotool holds though. I was able to repro the issue >>>>> with a fresh build of the freshly pulled master branch and Release-1.7.7 >>>>> tag. >>>>> >>>>> On Tue, Oct 4, 2016 at 2:41 PM, Eric Tabellion < >>>>> [email protected]> wrote: >>>>> >>>>>> I'm using OpenImageIO 1.6.13 but using a slightly modified version >>>>>> with our own build scripts. Let me try a stock build with a more recent >>>>>> version. >>>>>> >>>>>> On Tue, Oct 4, 2016 at 1:37 PM, Larry Gritz <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Weird. Here is the the last email I sent, right here on the list. >>>>>>> But my previous two replies have not shown up in my inbox. >>>>>>> >>>>>>> >>>>>>> On Oct 4, 2016, at 1:27 PM, Larry Gritz <[email protected]> wrote: >>>>>>> >>>>>>> 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] >>>>>>> _______________________________________________ >>>>>>> Oiio-dev mailing list >>>>>>> [email protected] >>>>>>> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Larry Gritz >>>>>>> [email protected] >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> --------------------------------------------------------------- >>>>>> Eric Tabellion [email protected] >>>>>> R&D Staff (650)-562-9146 >>>>>> PDI/Dreamworks >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> --------------------------------------------------------------- >>>>> 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] >>>> >>>> _______________________________________________ >>>> Oiio-dev mailing list >>>> [email protected] >>>> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >>>> >>>> >>> >>> >>> -- >>> --------------------------------------------------------------- >>> Eric Tabellion [email protected] >>> R&D Staff (650)-562-9146 >>> PDI/Dreamworks >>> >>> >> >> >> -- >> --------------------------------------------------------------- >> 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] > > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org > > -- --------------------------------------------------------------- Eric Tabellion [email protected] R&D Staff (650)-562-9146 PDI/Dreamworks
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