I think the answer is wrong. The Image.fromarray( ____ , ‘L’) function seems to only work properly with an array of integers between 0 and 255. I use the np.uint8 function for this. You can see this demonstrated if you try to make a gradient. import numpy as np from PIL import Image # gradient … Read more
There are two parts to JPEG quality. The first is the quality setting which you have already set to the highest possible value. JPEG also uses chroma subsampling, assuming that color hue changes are less important than lightness changes and some information can be safely thrown away. Unfortunately in demanding applications this isn’t always true, … Read more
Install Pillow pip install Pillow and use as from PIL import Image image=Image.open(‘L_2d.png’) imageBox = image.getbbox() cropped = image.crop(imageBox) cropped.save(‘L_2d_cropped.png’) When you search for boundaries by mask=imageComponents[3], you search only by blue channel.
The following script creates a transparent GIF with a red circle drawn in the middle: from PIL import Image, ImageDraw img = Image.new(‘RGBA’, (100, 100), (255, 0, 0, 0)) draw = ImageDraw.Draw(img) draw.ellipse((25, 25, 75, 75), fill=(255, 0, 0)) img.save(‘test.gif’, ‘GIF’, transparency=0) and for PNG format: img.save(‘test.png’, ‘PNG’)
You can do it like this: list_of_pixels = list(im.getdata()) # Do something to the pixels… im2 = Image.new(im.mode, im.size) im2.putdata(list_of_pixels)
Try: import os print os.stat(‘somefile.ext’).st_size
You should try something like: from PIL import Image from io import BytesIO import base64 data[‘img’] = ”’R0lGODlhDwAPAKECAAAAzMzM/////wAAACwAAAAADwAPAAACIISPeQHsrZ5ModrLl N48CXF8m2iQ3YmmKqVlRtW4MLwWACH+H09wdGltaXplZCBieSBVbGVhZCBTbWFydFNhdmVyIQAAOw==”’ im = Image.open(BytesIO(base64.b64decode(data[‘img’]))) Your data[‘img’] string should not include the HTML tags or the parameters data:image/jpeg;base64 that are in the example JSFiddle. I’ve changed the image string for an example I took from Google, just for … Read more
You need to convert the image to RGB mode. Image.open(‘old.jpeg’).convert(‘RGB’).save(‘new.jpeg’)
I’m a little late to reply here, but I ran into a similar problem and I wanted to share my solution. First, here’s a pretty typical stack trace for this problem: Traceback (most recent call last): … File …, line 2064, in … im.thumbnail(DEFAULT_THUMBNAIL_SIZE, Image.ANTIALIAS) File “/Library/Python/2.7/site-packages/PIL/Image.py”, line 1572, in thumbnail self.load() File “/Library/Python/2.7/site-packages/PIL/ImageFile.py”, line … Read more
I think ImageFont module available in PIL should be helpful in solving text font size problem. Just check what font type and size is appropriate for you and use following function to change font values. # font = ImageFont.truetype(<font-file>, <font-size>) # font-file should be present in provided path. font = ImageFont.truetype(“sans-serif.ttf”, 16) So your code … Read more