Python PIL library contains Image module in which variety of functions are defined. PIL.Image.Image.getbands()
This method is used to get the mode (bands) present in an image.
Syntax: PIL.Image.Image.getbands(image_object [valid image path])
Parameters:
It takes a parameter image_object i.e it the reference of the image which is opened using open() method or image path can also be mentioned.
Return value: Returns a tuple containing the name of each band in this image. For example, getbands on an RGB image returns (“R”, “G”, “B”).
Python3
# Importing Image module from PIL packagefrom PIL import Image# Opening a multiband imageim = Image.open(r"C:\Users\Admin\Pictures\images.png")# This returns the bands used in im (image)im1 = Image.Image.getbands(im)print("Multiband image", im1)# Opening a single band imageim2 = Image.open(r"C:\Users\Admin\Pictures\singleband.png")# This returns the band used in im2im3 = Image.Image.getbands(im2)print("Single band image", im3) |
Output:
Multiband image ('R', 'G', 'B')
Single band image ('P', )
PIL.Image.Image.getextrema() method –
Gets the minimum and maximum pixel values for each band in the image.
Syntax: PIL.Image.Image.getextrema(image_object [valid image path])
Parameters:
It takes a parameter image_object i.e it the reference of the image which is opened using open() method or image path can also be mentioned.
Return Value: For a single-band image, a 2-tuple containing the minimum and maximum pixel value. For a multi-band image, a tuple containing one 2-tuple for each band.
Python3
# importing Image module from PIL packagefrom PIL import Image# opening a multiband imageim = Image.open(r"C:\Users\Admin\Pictures\download.png")# getting maximum and minimum pixels of# multiband images (RBG)im1 = Image.Image.getextrema(im)print("Multi band image ", im1)# Opening a single band imageim2 = Image.open(r"C:\Users\Admin\Pictures\singleband.png")# getting maximum and minimum pixels of# single band imageim3 = Image.Image.getextrema(im2)print("Single band image ", im3) |
Output:
Multi band image ((73, 255), (0, 255), (0, 255)) Single band image (0, 123)
These images used in above article –
Multiband Images
Single band Image
