Labeling A Picture With Python Pillow PIL

The small tutorial shows you how to easily load an image from the web and label it using Python 3.

Summary

1. Load the picture from the web

Original image

2. Draw Rectangle

3. Draw the Text

4. Save the image offline (optional of course)

Final Product

Final Words

	from PIL import Image
	from PIL import ImageDraw
	from PIL import ImageFont
	from urllib.request import urlopen
	import io
	"""
	Downloading the image and passing it to PIL as a stream
	"""
	file = urlopen("http://imgsv.imaging.nikon.com/lineup/lens/zoom/normalzoom/af-s_dx_18-140mmf_35-56g_ed_vr/img/sample/sample1_l.jpg")
	image_stream = io.BytesIO(file.read())
	image = Image.open(image_stream)
	image.save("bird_original.jpg")
	"""
	Drawing a rectangle based on the image width and height
	"""
	width, height = image.size # (width, height)
	draw = ImageDraw.Draw(image)
	draw.rectangle(((0, 0), (width, height/5)), fill=(241, 244, 66))
	"""
	Labeling the image, varying the font size depending on the image size
	"""
	label = "Bird!"
	font = ImageFont.truetype("Helvetica", 1)
	#print(font.getsize(label)) # (width, height)
	while font.getsize(label)[0] < width and font.getsize(label)[1] < height/10:
	font = ImageFont.truetype("Helvetica", font.size+1)
	draw.text((width/2-(font.getsize(label)[0]/2), 20), label, font=font,fill=(0, 0, 0))
	"""
	Saving the picture on disk and previewing it
	"""
	image.save("bird_new.jpg")
	image.show()

view raw labelimage.py hosted with ❤ by GitHub

We hope that this snippet has helped you. If you are having any kind of trouble you are most welcome to comment!