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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