Python Image Library Module

Quiz

Image module

Image module in Python Image Library is the fundamental and most important module which is used for creating the module from scratch or loading the image that already exists.

Various operations can be performed which Image module like cropping, copying, creating, converting the format, rotating, resizing, color transformation.

If the file cannot be opened, an IOError exception is raised.

Importing Image module

from PIL import Image

Image module functions

function name	Description
Image.new(mode, size, color)	open function loads the existing image and makes the image ready for further processing
Image.blend(image1, image2, alpha)	Blend function creates new image by combing two images. Alpha can be any value in between 0.0 to 1.0.
Image.composite(image1, image2, mask)	Creates a composite image from two equal-sized images i1 and i2, where mask is a mask image with mode "1", "L", or "RGBA" of the same size.
Image.eval(image, function)	Applies the function (which should take one argument) to each pixel in the given image.
Image.frombuffer(mode, size, data)	Creates an image memory from pixel data in a string or buffer object, using the standard raw decoder.
Image.fromstring(mode, size, data)	Creates an image memory from pixel data in a string, using the standard raw decoder.
Image.merge(mode, bands)	Creates a new image from a number of single band images.

Methods

Below table contains complete list of methods of Image class that are used for various purposes.
All the methods return the modified form of instance of Image class.

Method name	Syntax
convert	im.convert(mode, matrix))
copy	im.copy()
crop	im.crop(box)
draft	im.draft(mode, size)
filter	im.filter(filter)
fromstring	im.fromstring(data, decoder, parameters)
getbands	im.getbands()
getbbox	im.getbbox()
getcolors	im.getcolors()
getdata	im.getdata()
getextrema	im.getextrema()
getpixel	im.getpixel(xy)
histogram	im.histogram()
load	im.load()
offset	im.offset(xoffset, yoffset)
paste	im.paste(image, box)
point	im.point(table) im.point(table, mode) im.point(function, mode)
putalpha	im.putalpha(band)
putdata	im.putdata(data) im.putdata(data, scale, offset)
putpalette	im.putpalette(sequence)
putpixel	im.putpixel(xy, colour)
quantize
resize	im.resize(size) im.resize(size, filter)
save	im.save(outfile) im.save(outfile, options) im.save(outfile, format, options)
seek	im.seek(frame)
show	im.show()
split	im.split()
tell	im.tell()
thumbnail	im.thumbnail(size) im.thumbnail(size, filter)
tobitmap	im.tobitmap()
tostring	im.tostring() im.tostring(encoder, parameters)
transform	im.transform(size, method, data) im.transform(size, method, data, filter) im.transform(size, EXTENT, data) im.transform(size, EXTENT, data, filter) im.transform(size, AFFINE, data) im.transform(size, AFFINE, data, filter) im.transform(size, QUAD, data) im.transform(size, QUAD, data, filter)
transpose	im.transpose(method)
verify	im.verify()

* im - im is the Image object that is supposed to be created before using any of the above method.

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