Yes, can you please send me a test image that shows the problem? If it's too
big for email, then maybe privately send me a dropbox or google drive link or
something.
-- lg
> On Oct 2, 2021, at 2:56 AM, jan <[email protected]> wrote:
>
> Hello i’m trying to composite an alpha onto a rgb image from a different file.
>
> fillholes_pushpull seems to work as expected on 8bit images but on float
> images the values go over the roof.
> Also I think i’m composing a correct rgba imagebuf but the output is always
> black that way.
> So I don’t know what’s wrong. Here’s the code:
> I can send you the test images if needed.
> Thank you.
>
> import OpenImageIO as oiio
> from OpenImageIO import ImageInput, ImageOutput
> from OpenImageIO import ImageBuf, ImageSpec, ImageBufAlgo
>
> fg = oiio.ImageBuf(‘/name.Diffuse.exr’) # exr or jpeg same problem
> bg = oiio.ImageBuf(‘/name.Opacity.exr’)
>
> al = oiio.ImageBufAlgo.channels (bg, (0, ))
> al = ImageBufAlgo.contrast_remap (al, black=0.4, white=0.6)
>
> temp = oiio.ImageBufAlgo.channel_append (fg, al)
>
> outbuf = oiio.ImageBufAlgo.fillholes_pushpull(temp)
> #outbuf = oiio.ImageBufAlgo.channels (outbuf, (0, 1, 2 )) #write complain
> about a missing alpha channel here
>
> image = outbuf.get_pixels()
> print(image.shape)
>
> alpha = al.get_pixels()
> print(alpha.shape)
>
> def write_image (image, filename, format=oiio.UNKNOWN) :
> if not image.has_error :
> image.write (filename, format)
> if image.has_error :
> print ("Error writing", filename, ":", image.geterror())
>
> write_image (outbuf, ‘/name/test.tif’) #extension doesnt change anything
>
>
> # Window name in which image is displayed
> window_name = 'image'
> cv2.imshow(window_name, alpha)
> cv2.waitKey(0)
> _______________________________________________
> 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
