Awesome. I've tried other alternatives, but they all seem to be tripping in one way or another over 16-bit images. --jono
On Fri, Jun 5, 2015 at 9:04 AM Larry Gritz <[email protected]> wrote: > OK, let me see what I can cook up for you. > > > > On June 5, 2015 8:50:43 AM PDT, Jonathan Gibbs <[email protected]> > wrote: >> >> I have some grayscale data in TIFF files, and need to do some custom >> image processing on it, as well as use routines from numpy/scipy which >> expects the input as bumpy.ndarrays. >> >> So, I was thinking along these lines: >> >> buf = oiio.ImageBuf(input) >> old_pixels = buf.get_pixels_as_ndarray(oiio.UINT16) >> new_pixels = process(old_pixels) >> buf.set_pixels_from_ndarray(new_pixels, oiio.UINT16) >> buf.write_image(output) >> >> I can always loop and call "set_pixel" - though I don't think setpixel >> allows me to hand it UINT16 values. It appears to always want floats. >> >> --jono >> >> On Thu, Jun 4, 2015 at 11:53 PM Larry Gritz <[email protected]> wrote: >> >>> Um, yeah, there's a simple way to pull pixels out, but not an easy way >>> to insert them (other than one at a time). >>> >>> I can probably add something for you easily (essentially, set_pixels). >>> But before I do, can you explain what you're trying to do overall, just in >>> case there's some better API strategy already in there? >>> >>> >>> On Jun 4, 2015, at 4:24 PM, Jonathan Gibbs <[email protected]> wrote: >>> >>> Does anyone have a good/simple example of working with OIIO in python. I >>> can get at the raw pixels nicely enough with ImageBuf.get_pixels(), but >>> it's not clear the best way to get those pixels back into an ImageBuf for >>> writing. (There is no set_pixels.) >>> >>> As a side note, get_pixels returns a Python array, which I can convert >>> easily enough to a numpy.ndarray. Is there a better way to get from a >>> ImageBuf to a numpy.ndarray and back again in a reasonably efficient manner? >>> >>> --jono >>> >>> _______________________________________________ >>> 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 >>> >> ------------------------------ >> >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> >> > -- > Larry Gritz > [email protected] >
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