PIL Convert Alpha-transparent image to non-transparent?
Chander Ganesan <[email protected]>
| Newsgroups | gmane.comp.python.image |
|---|---|
| Message-ID | <[email protected]> |
Hi Folks, I've done quite a bit of searching on Google for this and have yet to find a working result, so hopefully someone here will know... I've got an image that has alpha transparency, it has a non-white background color (that is transparent), and several pixels are "partially" transparent. If I take the image and convert it over from RGBA to RGB, the text in the image looks "blocky". I need to convert the image to a non-transparent one (so I can pass it into tesseract for OCR) but I cannot seem to do so without loosing quality of the text in the image. Is there a standard way to do this? I've tried the following (all to no avail): - Iterate over the pixels and find those that are more than 50% transparent and convert them to white (ends up with a dithered image) - Use Paste onto a white background that has no transparency, and then convert to RGB (no luck there) - Use Image.blend to attempt to blend with a white background (at various levels), no luck there. Any help - or pointers in the right direction - would be much appreciated! Thanks! chander _______________________________________________ Image-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/image-sig