Image Manipulation with Pillow

Example Code

from PIL import Image, ImageFilter, ImageDraw, ImageFont
import os

 --- 1. Prepare an example image ---
 For demonstration, we'll create a simple white image if 'input.jpg' doesn't exist.
 In a real scenario, you would replace 'input.jpg' with your actual image path.
input_image_path = "input.jpg"
output_resize_path = "output_resized.jpg"
output_rotate_path = "output_rotated.jpg"
output_filter_path = "output_filtered.jpg"
output_text_path = "output_text.jpg"

if not os.path.exists(input_image_path):
    print(f"'{input_image_path}' not found. Creating a dummy image for demonstration.")
    dummy_image = Image.new('RGB', (400, 300), color = 'white')
    draw = ImageDraw.Draw(dummy_image)
     Try to add some text if a font is available
    try:
         Using a common font path for demonstration; adjust if needed
        font_path = "arial.ttf"  Or any other .ttf font file
        if os.path.exists(font_path):
            font = ImageFont.truetype(font_path, 40)
            draw.text((50, 120), "Hello Pillow!", fill="red", font=font)
        else:
            print(f"Warning: Font '{font_path}' not found. Text will be drawn with default font.")
            draw.text((50, 120), "Hello Pillow!", fill="red")
    except Exception as e:
        print(f"Error drawing text with truetype font: {e}. Drawing with default font.")
        draw.text((50, 120), "Hello Pillow!", fill="red")

    dummy_image.save(input_image_path)
    print(f"Dummy image saved as '{input_image_path}'.")
else:
    print(f"Using existing image '{input_image_path}'.")


 --- 2. Open an image ---
try:
    img = Image.open(input_image_path)
    print(f"Original image size: {img.size}")
    img.show(title="Original Image")  Opens the image in your default viewer
except FileNotFoundError:
    print(f"Error: The file '{input_image_path}' was not found. Please ensure it exists.")
    exit()
except Exception as e:
    print(f"An error occurred while opening the image: {e}")
    exit()

 --- 3. Resize an image ---
 New size: width=200, height=150
resized_img = img.resize((200, 150))
resized_img.save(output_resize_path)
print(f"Resized image saved as '{output_resize_path}'. New size: {resized_img.size}")
 resized_img.show(title="Resized Image")

 --- 4. Rotate an image ---
 Rotate by 45 degrees, expanding the canvas to fit the entire rotated image
rotated_img = img.rotate(45, expand=True)
rotated_img.save(output_rotate_path)
print(f"Rotated image saved as '{output_rotate_path}'. New size: {rotated_img.size}")
 rotated_img.show(title="Rotated Image")

 --- 5. Apply a filter (e.g., Gaussian Blur) ---
filtered_img = img.filter(ImageFilter.GaussianBlur(radius=5))
filtered_img.save(output_filter_path)
print(f"Filtered image (Gaussian Blur) saved as '{output_filter_path}'.")
 filtered_img.show(title="Filtered Image")

 --- 6. Add text to an image ---
text_img = img.copy()  Create a copy to avoid modifying the original
draw = ImageDraw.Draw(text_img)
text = "Pillow Power!"
fill_color = (255, 0, 0)  Red color
position = (10, 10)  Top-left corner

 Try to load a font. If not found, use a default (often much smaller).
try:
     Adjust font path if 'arial.ttf' is not found on your system
     Common paths: Windows: C:\\Windows\\Fonts\\arial.ttf, Linux: /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf
    font = ImageFont.truetype("arial.ttf", 36)
except IOError:
    print("Could not load truetype font. Using default PIL font.")
    font = ImageFont.load_default()

draw.text(position, text, fill=fill_color, font=font)
text_img.save(output_text_path)
print(f"Image with text saved as '{output_text_path}'.")
 text_img.show(title="Image with Text")

print("\nAll operations completed. Check the output files in your directory.")
print("You might need to install 'tkinter' or 'ImageMagick' for .show() method to work on some systems.")