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This article will explain in detail how to use the Pillow module in Python. The content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

Install Pillow

If Anaconda,Pillow is installed, it is already available. Otherwise, you need to install via pip from the command line:

Pip install pillow

Use the Image class

The most important class in PIL is Image class, and you can create instances of this class in a variety of ways; you can load images from files, or work with other images, or create them from scratch.

To load an image from a file, use the open () function in the Image module:

> from PIL import Image > im = Image.open ("lena.ppm")

An Image object is returned if the load succeeds. You can now use the sample properties to check the contents of the file:

> from _ future__ import print_function > print (im.format, im.size, im.mode) PPM (512512) RGB

The format attribute identifies the source of the image. If the image is not read from a file, its value is None. The size attribute is a binary tuple that contains width and height (width and height, both in px). The mode attribute defines the number and name of the image bands, as well as the pixel type and depth. Common modes has "L" (luminance) for grayscale image, "RGB" for true color image, and and "CMYK" for published image.

If the file is opened incorrectly, an IOError error is returned. As long as you have an instance of the Image class, you can process the image through the method of the class. For example, the following methods can display images:

> > im.show ()

The standard show () is not efficient, it needs to save the image to a temporary file and then display the image through xv. You need to install xv first, and displaying images is helpful for debugging and testing.

Manipulate Ima

Let's take a look at the most common image zooming operation, which takes only three or four lines of code:

From PIL import Image# opens a jpg image file Note that it is the current path: im = Image.open ('test.jpg') # get the image size: W, h = im.sizeprint (' Original image size:% sx%s'% (w, h)) # Zoom to 50%:im.thumbnail (w sx%s' 2, h) print ('Resize image to:% sx%s'% (w sx%s' 2) ) # Save the scaled image in jpeg format: im.save ('thumbnail.jpg',' jpeg')

PIL's ImageDraw provides a series of drawing methods that allow us to draw directly.

From PIL import Image, ImageDraw, ImageFont, ImageFilterimport random# Random letter: def rndChar (): return chr (random.randint (65,90)) # Random Color 1:def rndColor (): return (random.randint (64,255), random.randint (64,255), random.randint (64,255)) # Random Color 2:def rndColor2 (): return (random.randint (32,127), random.randint (32,127), random.randint (32) ) # 240 x 60:width = 60 * 4height = 60image = Image.new ('RGB', (width, height), (255,255,255)) # create Font object: font = ImageFont.truetype (' Arial.ttf', 36) # create Draw object: draw = ImageDraw.Draw (image) # fill each pixel: for x in range (width): for y in range (height): draw.point ((x, y)) Fill=rndColor () # output text: for t in range (4): draw.text ((60 * t + 10,10), rndChar (), font=font, fill=rndColor2 ()) # Fuzzy: image = image.filter (ImageFilter.BLUR) image.save ('code.jpg',' jpeg') about how to use the Pillow module in Python. I hope the above content can be of some help to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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