Random Crop

If you have ever worked on a Computer Vision project, you might know that using augmentations to diversify the dataset is the best practice. On this page, we will:

  • Сover the Random Crop augmentation;
  • Check out its parameters;
  • See how Random Crop affects an image;
  • And check out how to work with Random Crop using Python through the Albumentations library.

Let's jump in.

To define the term, Random Crop is a data augmentation technique that helps researchers to crop the images into a particular dimension, creating synthetic data. The cropping could result in any patch of the image and is therefore called "Random Crop."

Make sure that the original image size is larger than the requested crop size.
  • Height - sets the height of the desired cropped image in pixels;
  • Width - sets the width of the desired cropped image in pixels.
Original image (before Random Crop)
Source
Image after Random Crop was applied (height = 154, width = 17)
Source
python 
      import albumentations as albu
from PIL import Image

transform = albu.RandomCrop(200,200)
augmented_image = transform(image=figure)['image']

# We have our required cropped image in augmented_image.

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