On Nov 16, 11:48 am, Dave Angel <da...@ieee.org> wrote: > Carlo DiCelico wrote: > > I need to convert JPEG and PNG files to SVG. I'm currently using PIL > > to generate the JPEG/PNG files to begin with. However, I need to be > > able to scale the generated images up in size without a loss of image > > quality. Using SVG seems to be the best way to do this, other than > > generating the images in the maximum size/resolution in the first > > place, which would be too resource intensive. > > > I've looked around online and have found some tools for creating SVGs > > but none for converting an image into SVG. > > > Does anyone have any experience doing this? What would be the best way > > to go about this? > > > Thanks, > > Carlo > > I have no direct experience with SVG, but have used and analyzed other > formats. > > I expect it's unreasonable to convert jpg or png files to SVG. The > latter is a vector format, and can't efficiently represent pixels, which > is all you have in the jpg files. And even if you did it brute force, > it still wouldn't scale any better than the original jpg. If the jpg > file was generated from lines, and wasn't too crowded, it *might* be > possible to analyze it to reconstruct the vectors, but it would be both > very slow, and inaccurate. > > In Photoshop PSD files, you can have vector layers and RGB layers (plus > other kinds). You convert a vector layer (such as text) to bits by > rasterizing (or flattening). And once you do, it no longer scales > cleanly. For instance, when I'm sending composite images to a printer, > I get much better quality sending the raster portion separate from the > text, either as layers in a PSD file, or in a PDF file, or even as two > separate files that they will merge later. (In that case, I usually > send a low-res flattened file, so they can see how it's supposed to look) > > I'd say you should change your python code to generate the svg files > first (perhaps usinghttp://code.activestate.com/recipes/325823/) > > Then you might want to use (http://www.imagemagick.org/script/index.php > ) to convert it to jpg or other format. > > DaveA
Thanks, this makes perfect sense. -- http://mail.python.org/mailman/listinfo/python-list
