Re: [Image-SIG] Locate The Center of WhiteDot from a Image
On 1/7/2011 8:26 PM, Narendra Sisodiya wrote: If you need more math, numpy can help. Somethign like: a = np.asarray(PIL_image) background_color = 0 rows, cols = np.where(a <> background_color) # background color a uint32 BB = (rows.min(), rows.max(), cols.min(), cols.max()) I am unable to get what that code means ? May you explain how I can use above code with getbbox ? Or the above code using NumPy is alternate of getbbox method ? It's an alternative. IF yes, then which will be the faster ? The only way to know is to try it, but I suspect the PIL getbox() is a bit faster, as I image it does it all in one C loop. numpy is doing it in a couple loops. The reason to use numpy is if you want to do something more complex that is not directly supported by PIL. you might want to look at the scip ndimage toolbox it has some useful stuff: http://www.scipy.org/SciPyPackages/Ndimage though perhaps you've solved you problem. -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R(206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov ___ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig
Re: [Image-SIG] Putting a unicode string on an ImageDraw canvas
2011/1/10 Thomas Larsen Wessel :
> Thanks :)
>
> Here is an example that shows how both draw.text and draw.textsize works, as
> long as a unicode-supported font is supplied. It also shows how to get the
> text size directly from the font object.
>
> import ImageFont, Image, ImageDraw
>
> s = u'\u0623\u0636\u0641'
>
> font = ImageFont.truetype('/host/WINDOWS/Fonts/tahoma.ttf', 12,
> encoding='unic')
> print font.getsize(s) # no problem, works fine
>
> im = Image.new('RGB', (200,200))
> draw = ImageDraw.Draw(im)
> print draw.textsize(s, font=font) #fails
Hmm. That works for me in both 1.1.7 and trunk, and I don't really see
how it can fail for you given that it ends up calling the same method
in both cases:
def textsize(self, text, font=None):
if font is None:
font = self.getfont()
return font.getsize(text)
What's the exact error?
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Re: [Image-SIG] Putting a unicode string on an ImageDraw canvas
Thanks :)
Here is an example that shows how both draw.text and draw.textsize works, as
long as a unicode-supported font is supplied. It also shows how to get the
text size directly from the font object.
import ImageFont, Image, ImageDraw
s = u'\u0623\u0636\u0641'
font = ImageFont.truetype('/host/WINDOWS/Fonts/tahoma.ttf', 12,
encoding='unic')
print font.getsize(s) # no problem, works fine
im = Image.new('RGB', (200,200))
draw = ImageDraw.Draw(im)
print draw.textsize(s, font=font) #fails
Thomas
On Mon, Jan 10, 2011 at 2:27 PM, Fredrik Lundh wrote:
> 2011/1/10 Thomas Larsen Wessel :
> > People are telling me that PIL supports unicode strings, does it? And if
> > yes, why does the following not work:
> >
> > import ImageFont, Image, ImageDraw
> > s = u'\u0623\u0636\u0641'
> > im = Image.new('RGB', (200,200))
> > draw = ImageDraw.Draw(im)
> > draw.text((40,40), s) #fails
> >
> > It results in the following exception:
> >
> > Traceback (most recent call last):
> > File "buffer.py", line 9, in
> > draw.text((40,40), s) #fails
> > File "/usr/lib/python2.6/dist-packages/PIL/ImageDraw.py", line 267, in
> > text
> > mask = font.getmask(text, self.fontmode)
> > UnicodeEncodeError: 'ascii' codec can't encode characters in position
> 0-2:
> > ordinal not in range(128)
> >
> > So how, do I put this unicode string on the canvas?
>
> You'll need a font that supports Unicode, which the crappy default
> bitmap font doesn't. Use the ImageFont module to load a suitable
> TrueType font.
>
>
>
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Re: [Image-SIG] Putting a unicode string on an ImageDraw canvas
2011/1/10 Thomas Larsen Wessel :
> People are telling me that PIL supports unicode strings, does it? And if
> yes, why does the following not work:
>
> import ImageFont, Image, ImageDraw
> s = u'\u0623\u0636\u0641'
> im = Image.new('RGB', (200,200))
> draw = ImageDraw.Draw(im)
> draw.text((40,40), s) #fails
>
> It results in the following exception:
>
> Traceback (most recent call last):
> File "buffer.py", line 9, in
> draw.text((40,40), s) #fails
> File "/usr/lib/python2.6/dist-packages/PIL/ImageDraw.py", line 267, in
> text
> mask = font.getmask(text, self.fontmode)
> UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2:
> ordinal not in range(128)
>
> So how, do I put this unicode string on the canvas?
You'll need a font that supports Unicode, which the crappy default
bitmap font doesn't. Use the ImageFont module to load a suitable
TrueType font.
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[Image-SIG] Putting a unicode string on an ImageDraw canvas
People are telling me that PIL supports unicode strings, does it? And if
yes, why does the following not work:
import ImageFont, Image, ImageDraw
s = u'\u0623\u0636\u0641'
im = Image.new('RGB', (200,200))
draw = ImageDraw.Draw(im)
draw.text((40,40), s) #fails
It results in the following exception:
Traceback (most recent call last):
File "buffer.py", line 9, in
draw.text((40,40), s) #fails
File "/usr/lib/python2.6/dist-packages/PIL/ImageDraw.py", line 267, in
text
mask = font.getmask(text, self.fontmode)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2:
ordinal not in range(128)
So how, do I put this unicode string on the canvas?
Thanks in advance, Thomas
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Re: [Image-SIG] ANN: PIL 1.2 pre-alpha (January 8, 2011)
2011/1/9 Glenn Linderman : > On 1/7/2011 5:41 PM, Fredrik Lundh wrote: > > It also builds under Python 3.1 and 3.2 beta, even if > the functionality is currently *very* limited under Python 3.X. > > Is there any doc that describes what does or doesn't work under 3.X? Beyond that transcript, not much works. Not enough to motivate putting together a document about it, at least :) But we're working on it. ___ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig
