rryan....@gmail.com wrote: > I'm trying to build a tkinter GUI with python 3.5, and would like to > interactively adjust the color palette for an image by moving the mouse in > the canvas using PIL. In pseudo-code, I have something like > > palette=color_map(x,y) # x,y are scalars indicating the position of the > mouse in the Canvas image.putpalette(palette) > photo.paste(image) > > This works just fine, but is very slow. The photo.paste(image) step takes > about 0.15 s (using an image that is 4k x 4k). I read the manual on > effbot, and they caution that the paste method would be slow if the image > is display --- and I'm guessing that's what I'm doing.
So you have read """ Note: Pasting into an RGBA image that is displayed is a very slow operation. It’s usually better to create a new image object. """ on <http://effbot.org/imagingbook/imagetk.htm>. > So my question is, what alternatives do I have to speed that step up. Did you try to create a new image, as the note suggests? > Thank you for any thoughts you might have... > -Russell -- https://mail.python.org/mailman/listinfo/python-list
