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python-pillow
Devanagari font not working
I am printing text written in devanagari unicode to jpg and png
all i can see in images in boxes.
python 2 and 3 both, with pillow pip install
# Draw (Bitmap Font) Text to Image
# coding: utf-8
from PIL import Image, ImageDraw, ImageFont
def reverseColor(r, g, b):
return (255 - r, 255 - g, 255 - b)
def grayscaleColor(r, g, b):
a = (r + g + b) / 3
return (a, a, a)
text = "तपःस्वाध्यायनिरतं तपस्वी वाग्विदां वरम्"
textColor = (0, 255, 0) # RGB lime
#textBackgroundColor = (255, 0, 0) # RGB Red
textX = 200 # text width in pixels
textY = 50 # text height in pixels
textTopLeftX = 100
textTopLeftY = 100
# create new image
# imgx = 1920 # image width in pixels
# imgy = 1080 # image height in pixels
# image = Image.new("RGB", (imgx, imgy))
# load image
image = Image.open("input.png")
(imgx, imgy) = image.size
image = image.resize((imgx, imgy), Image.BICUBIC)
font = ImageFont.truetype("Devnew.ttf", 15) # load default bitmap font
(width, height) = font.getsize(text)
textImage = font.getmask(text)
pixels = image.load()
for y in range(imgy):
by = int(height * (y - textTopLeftY) / textY + 0.5)
if by >= 0 and by < height:
for x in range(imgx):
bx = int(width * (x - textTopLeftX) / textX + 0.5)
if bx >= 0 and bx < width:
if textImage.getpixel((bx, by)) == 0: # text background
# pass # transparent background
# pixels[x, y] = textBackgroundColor
(r, g, b, a) = pixels[x, y]
#(r, g, b) = pixels[x, y]
#pixels[x, y] = grayscaleColor(r, g, b)
else: # text foreground
pixels[x, y] = textColor
(r, g, b, a) = pixels[x, y]
# (r, g, b) = pixels[x, y]
# pixels[x, y] = reverseColor(r, g, b)
image.save("output.png", "PNG")
That appears to be a very complicated way to draw text. Have you tried the more straightforward way to use the api? http://pillow.readthedocs.io/en/3.4.x/reference/ImageDraw.html#example-draw-partial-opacity-text
This has been an issue for a long time. I had the same issue with Indic text rendering. After trying a lot, I finally use cffi in python3. See scribe.py and 'cffi_wrapper.py` in chamanti_ocr.
@wiredfool my problem is not with drawing text i am able to draw it with the default font but facing issue with the font i am using actually not only this font i have tried. all are attached below.
@rakeshvar thats for the clearification can you share some working POC work for the fonts i am working with as i need these fonts only to work on.
ok it doesn't seem I can upload them, so you can refer the name of the fonts.
- Devnew.ttf
- Lohit-Marathi.ttf
- Sarai_07.ttf
- chandas1-2.ttf
- gargi.ttf
- lohit_kok.ttf
- lohit_mai.ttf
- lohit_sd.ttf
- nakula.ttf
- samanata.ttf
- Lohit-Devanagari.ttf
- Samyak-Devanagari.ttf
- kalimati.ttf
- lohit_ks.ttf
- lohit_ne.ttf
- mangal.ttf
- sahadeva.ttf
I'm not sure I have access to any of those fonts, but I suspect that this is a case of not having the normalization step from unicode -> combined glyphs. There's a PR that adds support for it in #1682, but it needs work.
@wiredfool i am security tester not a developer its wasn't already easy for me so #1682 seems tough for me to go for. thanks for your support i will keep looking for some other way around.
If you can render standard uncomplicated fonts, then I'd bet that #1682 is one solution, however convoluted.
FWIW, your rendering looks quite complicated, and it appears that it's a really slow equivalent to the standard ImageDraw.text command. In general, if you're looping over pixels in python, there's a better way.
@manishp11 Check out this repo to see how to get unicode text as a numpy array in Python3. You will have to tweak with it to get what you need. It does not use Pillow or Harfbuf, etc.
That repo seems to work on my machine. It's pretty easy to skip the dependency on numpy and directly output an image from the scribe function:
return Image.frombuffer('L', (width, height), data, "raw", 'L', 0, 1)
#return np.frombuffer(data, dtype=np.uint8).reshape((height, width))
and then later just display the image, rather than trimming it and dumping to the console.
I think that image could be directly used as a font mask in ImageDraw.text.
The question I have is: What's the level of correctness/generality here? Is this a general solution for 'complex' scripts, bypassing the need for harfbuf with different dependencies, or is this just working because the string in the script has already been preprocessed?
@wiredfool That repo uses the same mechanism that linux uses to display complex scripts. i.e. via the pango, cairo and pangocairo libraries. The repo does it in a dependable way using cffi. O, also in that repo I use eight-bit images. One can use 24-bit images instead.
The string is not pre-processed in anyway. It is just raw unicode, as it ought to be.
Ok, so it's a complete solution through a different stack than we're using. This has potential.
Do you have a license for it? Hopefully something compatible with Pillow?
@wiredfool If I understand correctly, you'd like @rakeshvar to provide a license for https://github.com/rakeshvar/unicode_text_to_image_array so we can use it in Pillow?
Maybe, there's been development since then in a different implementation using harfbuzz and raqm.
Otoh, this might be a reasonable alternate implementation, as it's a small interface and we don't actually have to ship the binaries.
Hi, Please let me know complex font rendering for Indic fonts are working now? I am using PIL on windows. Thanks.
Most likely you need a text = text.decode('utf8') if you are python 2.x . See my comments in
https://github.com/rougier/freetype-py/issues/57
And also the changes I recently made to freetype-py https://github.com/rougier/freetype-py/pull/52/commits/a4e35f785d4ab912dbfe2d28d2b50158512c4b35
Actually from __future__ import unicode_literals should also work for python 2.x
Thanks HinTak, It is drawing fine with regular consonants, but what I meant was that when a vowel symbol is top on top of consonant like ကိ (little o shape on top of က) Pillow is rendering separately as shown below. Please let me know if this is something I could do with freetype-py too?
sylb = txt2png(u"ကိ",fopath, 80, 128)
I have modified example 1 ( https://github.com/rougier/freetype-py/issues/54#issuecomment-298186703 ) to use the lohit font, and the initial phrase, and it seems to work:
+ filename= '/usr/share/fonts/lohit-devanagari/Lohit-Devanagari.ttf'
+ text = 'तपःस्वाध्यायनिरतं तपस्वी वाग्विदां वरम्'
Here is the result (obviously I cannot read Devnagri, so you'll have to check it yourself):
I am fairly sure you need harfbuzz for "ကိ (little o shape on top of က)".
@HinTak The rendering is not correct. It should look like तपःस्वाध्यायनिरतं स्वा ध्या नि etc. are wrong.
I did example 1 with text below and it came out similar to Pillow which is not correct. So it seems like I would need harfbuzz as you indicated. Would it be possible natively inside Pillow (or) freetype-py? @rakeshvar unicode_text_to_image_array repo works on Linux, but I can't make it work on Windows 10, so this is why I am interested in Pillow (or) freetype-py to work on Windows.
Many thanks,
text = u'ကိ'
Here is freetype-py 's hello world example quickly changed to do the initial phrase (I can't read it - just cut-and-paste)
Hmm, harfbuzz can be built for windows (and so does pango).... but it is quite an unnatural/involved task to do.
There is already a pull request for complex text support https://github.com/python-pillow/Pillow/pull/2284.
thanks @wiredfool. please let me know if this is going work with windows as well?
Short answer -- Not now. Dependencies are harder to build on windows, and libfribidi is GPL, so we wouldn't be able to distribute it in the binaries, at least by default.
@wiredfool @rakeshvar @aclark4life
This repo doesn't provide correct output.
The text कामकाजी महिलाओं के लिए देश में दिल्ली असुरक्षित, सिक्किम सबसे बेहतर: रिपोर्ट produces the following incorrect output
Was trying to produce a solution for https://stackoverflow.com/questions/39630916/how-can-i-print-hindi-sentencesunicode-on-image-in-python
