I would like to run a script that goes through the jpgs in a directory one by one, takes a small square clip of the center of the image (100x100 pixels, for instance), and saves that square in a second directory as a new image.
Speed of execution is of no concern. Just looking for a way to get this done painlessly, preferably without needing to install anything I don't already have, and with a tool or language I sometimes use (preferably Python or Javascript).
How would you go about such a task?
Here is a Python script that does what you want. You need to install Pillow first using the command pip install Pillow:
from PIL import Image
import os
def crop_center(image, width, height):
img_width, img_height = image.size
left = (img_width - width) // 2
top = (img_height - height) // 2
right = (img_width + width) // 2
bottom = (img_height + height) // 2
return image.crop((left, top, right, bottom))
def process_images(input_dir, output_dir):
if not os.path.exists(output_dir):
os.makedirs(output_dir)
for filename in os.listdir(input_dir):
if filename.endswith('.jpg'):
input_path = os.path.join(input_dir, filename)
output_path = os.path.join(output_dir, filename)
with Image.open(input_path) as img:
cropped_img = crop_center(img, 100, 100)
cropped_img.save(output_path)
if __name__ == "__main__":
input_directory = "/path/to/input/directory" # Update this to your input directory
output_directory = "/path/to/output/directory" # Update this to your output directory
process_images(input_directory, output_directory)
the process_images() function runs through all the images in the given input_dir folder, applies the crop_center() function to each image and saves it to the given output_dir folder (if this folder doesn't exits, it's created).
You can change the size of the crop by modifying the width and height parameters passed to the crop_center function call (I've set them both at 100 as per your example).