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##### Activity
Andrew Murray
To give you a quick answer - if I rephrase your request, you want to crop out parts of an image within a rectangle outline of a certain color. This problem is solved for a different situation in python-pillow/Pillow#4049, using https://pillow.readthedocs.io/en/stable/reference/PixelAccess.html to read individual pixel colors
Andrew Murray
Ok, here is code to process your image and save cropped rectangles with the text. The red, green, gray and blue colors are specified. It will take a minute or two to run. It is searching for a rectangle of one of the colors, of a reasonable size.
from PIL import Image

colors = ((0,160,0),(33,150,243),(88,88,88),(255,0,0))

x, y = 0, 0
currentColor = None
processedPixels = []
i = 0

# Start searching through all the pixels
for y in range(0, im.height):
for x in range(0, im.width + 1):
def getColor(x, y):
try:
return px[x, y]
except IndexError:
return

if (x, y) in processedPixels:
continue
color = getColor(x, y)
if color != currentColor:
if currentColor is not None:
max_x = x

# The color line has ended, from min_x to max_x
x_range = min_x, max_x

# The left side of our rectangle must also be a solid color
# So search from the top left until we have a solid left side
for y2 in range(y+1, im.height+1):
for x2 in range(min_x, max_x+1):
if getColor(x2, y2) == currentColor:
min_x = x2
break
else:
# No color in this line, so we have hit the bottom of the rectangle
max_y = y2
break

# The same for the right side
for y2 in range(y+1, max_y+1):
for x2 in range(max_x+1, min_x, -1):
if getColor(x2, y2) == currentColor:
max_x = x2
break

# Check that this rectangle is of a reasonable size
if max_x - min_x > 10 and max_y - y > 10:
# Record that we've processed these pixels, to save time
for y2 in range(y, max_y+1):
for x2 in range(x_range[0], x_range[1]+1):
processedPixels.append((x2, y2))

# Check that the box is not purely one color
singleColor = True
for y2 in range(y, max_y+1):
for x2 in range(min_x, max_x+1):
if getColor(x2, y2) != currentColor:
singleColor = False
break
if not singleColor:
break
if not singleColor:
i += 1

# Save the cropped image
im.crop((min_x, y, max_x, max_y)).save("out_"+str(i)+".png")
if color in colors:
# Start a line with a relevant color
currentColor = color
min_x = x
else:
currentColor = None
Actually, I’ve just realised that you’ll want to increase the minimum size of the rectangles, otherwise it will identify parts of the TradingView logo. You get the idea though
Ojas Kale
@iojas

Hello, when I am running
im = Image.open(path)
I am getting error
ValueError: Decompressed Data Too Large

I know I am suppose to set MAX_TEXT_CHUNK or MAX_TEXT_MEMORY, but I do not know where to set it. Does anyone have an idea where.

WorstGamr
Hello, I'm new to using PIL, and I need to draw text. However I'll be using this with discord.py, and the text will be the name of a user. However the user's name can be long, and so I'm wondering if there is a way to set a maximum width to the text, so that if it exceeds, it'll resize the font to fit.
Andrew Murray
For the record, MAX_TEXT_CHUNK and MAX_TEXT_MEMORY are set on PngImagePlugin
>>> from PIL import PngImagePlugin
>>> PngImagePlugin.MAX_TEXT_CHUNK
>>> PngImagePlugin.MAX_TEXT_MEMORY
Andrew Murray
As for setting a maximum width for text, you would be interested in getsize.
from PIL import Image, ImageFont
font=ImageFont.truetype('Tests/fonts/FreeMono.ttf', size=14)

font=ImageFont.truetype('Tests/fonts/FreeMono.ttf', size=28)
Jason Raveling
Hello. What is the difference between PIL and Pillow?
Andrew Murray

Pillow is a fork of PIL.

PIL has its last release in 2009
Pillow had its last release a week ago. So there are a variety of features, bug fixes and security fixes that have been performed since PIL. However, Pillow is largely backwards compatible with the PIL API.

PIL does not support Python 3
Pillow supports Python 3, and dropped support for Python 2 a few releases ago.

Hummer12007
@Hummer12007
How can a OSError: image file is truncated (0 bytes not processed) error occur?
It occurs when I load an image (successfully and then try to copy or show it)
from PIL import Image
im = Image.open('test.jpg') # completes successfully
im.copy() # fails with OSError: image file is truncated (0 bytes not processed)
Here is the image: https://l.sr.ht/pBH2.jpg
Hummer12007
@Hummer12007
LOAD_TRUNCATED_FILES fixes the issue indeed, but I'm interested in the underlying reason
Codie (蒂诺)
@lasso-codie
Hello, I was brough here by PEP 3118 wanting to learn more about the memory model of PIL. How does the library handle a picture consisting of different, non contiguous memory blocks, so that it seems like a single block in python? I was digging a little bit the codebase but didn't find what I was searching for.
2 replies
Ronald Lencevičius
@392781
Hi, I'm not very experienced with contributing to large projects like Pillow. I put together a solution to issue #4634; however, I'm a bit stuck setting up the test environment to build my tests. Is there some sort of guide any of you can point me to? I don't want to make a pull request without having made a good effort to cover all requirements for a new feature.
Andrew Murray
Also, if you’d like to run tests the same way that they will be run when the PR is created, you could use GitHub Actions - it’s possible you will just see results at https://github.com/392781/Pillow/actions once your push to your repo - or sign up for https://travis-ci.org/ or https://www.appveyor.com/
Ronald Lencevičius
@392781
Yeah, I read through the readme. I'll look at github actions. Thanks for the tip!
Technerder
@Technerder
How can I draw text between two points on an image so that the font scales perfectly and it automatically splits into a multiline string if it needs to?
Andrew Murray

Your description leaves a bit of room for interpretation - you would like scaling, but also splitting into a multiline string... so there's a minimum font size involved, and once you hit that, it starts splitting the string rather than scaling?

Essentially, https://pillow.readthedocs.io/en/stable/reference/ImageFont.html#example shows how to draw that on an image

You will have to use https://pillow.readthedocs.io/en/stable/reference/ImageFont.html#PIL.ImageFont.FreeTypeFont.getsize to calculate the space that your text will occupy, and change the font size accordingly. Pillow does not provide built-in scaling. Similarly, you will have to split the string into multiple lines yourself.

Kieran Boyle
@k-boyle

Hello, I'm trying to take a gif and split it into 4 pieces, I've got all of my frames split but I'm having an issue when it comes to saving the actual gifs.
I've got

for frames in gifs:
first_frame = frames[0]
first_frame.save (f'{gif_index}.gif', 'GIF', save_all=True, append_images=frames[1:], optimize=False, loop=0, duration=original_duration)

and the length of frames is 2, it seems that when the 2 frames are identical the gif gets saved as a single frame (which i've verified by reading the saved gif back in and checking n_fames). It looks like it's this issue python-pillow/Pillow#2314 but that looks like it was fixed?

when the two frames are different it saves them just fine
Andrew Murray
I think this is considered a feature, rather than a bug. If the two frame are identical, why not save space by marking them as just one frame?
Random-Fun
@Random-Fun

Hello so i did & C:/Users/lior/AppData/Local/Programs/Python/Python38-32/python.exe -m pip install Pillow

But its still showing

Traceback (most recent call last):
File "c:/Users/lior/Documents/e3.py", line 8, in <module>
from pillow import Image, ImageDraw, ImagePalette, ImageFont
ModuleNotFoundError: No module named 'pillow'
why is this
Andrew Murray
Although the package is called Pillow, you should import from PIL
So
from PIL import Image, ImageDraw, ImagePalette, ImageFont
JaivyDaam
@JaivyDaam

Hey Everyone,

I am getting a little bit frustrated here hoping someone could point me in the right direction as I am unable to find it myself.

I have images at the moment of which I want the full summary of “MetaData” within the file. This includes also other summary data found within the file such as ones that are left behind by other software like Photoshop. But at this moment I am unable to find any solution. Would anyone be able to point me in the right direction?