🧠 Computer Vision Project - Cartoonify an Image

This project demonstrates how to transform a regular image into a cartoon-style image using OpenCV. It's built specifically for execution in Google Colab, making use of Colab’s built-in tools for image display and file handling.

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Try to run in code in google colab as it is written on colab and will work fine.

🖼️ Sample Output

Original Image	Grayscale Image

Canny Edges	Cartoon Image

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🧰 Tech Stack

• Python 3.x
• OpenCV (cv2)
• PIL (Python Imaging Library)
• Google Colab tools (cv2_imshow, files.upload, files.download)

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📂 Code Overview

# Import libraries
from google.colab.patches import cv2_imshow
import cv2
import io
from PIL import Image
from google.colab import files

# Load image
img = cv2.imread('pup.jpg')

# Grayscale conversion
Grey_img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2_imshow(Grey_img)
cv2.imwrite('grey.jpg', Grey_img)

# Apply median blur
grey_blur = cv2.medianBlur(Grey_img, 5)
cv2_imshow(grey_blur)
cv2.imwrite('blur.jpg', grey_blur)

# Canny edge detection
edges = cv2.Canny(grey_blur, 100, 200)
cv2_imshow(edges)
cv2.imwrite('canny.jpg', edges)

# Adaptive thresholding
edge = cv2.adaptiveThreshold(grey_blur, 255, cv2.ADAPTIVE_THRESH_MEAN_C,
                             cv2.THRESH_BINARY, blockSize=9, C=9)
cv2_imshow(edge)
cv2.imwrite('adaptive.jpg', edge)

# Show original image
print("Original image")
cv2_imshow(img)

# Cartoonify the image
print("Cartoon image")
cartoon = cv2.bitwise_and(img, img, mask=edge)
cv2_imshow(cartoon)
cv2.imwrite('cartoon.jpg', cartoon)

# Download cartoon image
files.download('cartoon.jpg')

📦 How to Use

• Open the notebook in Google Colab.

• Upload your image as pup.jpg (or change the filename).

• Run all cells to visualize the process:

• Grayscale

• Blurred

• Edges

• Cartoonified output

• The cartoonified image is saved and downloaded as cartoon.jpg.

💡 Concepts Used

• Grayscale conversion

• Median blurring

• Canny edge detection

• Adaptive thresholding

• Bitwise masking for cartoon effect

📜 License

• This project is licensed under the MIT License.

🤝 Contributing

• Contributions and suggestions are welcome! Feel free to open an issue or pull request.

Made with ❤️ using Python, OpenCV, and Google Colab.

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📌 Note:

To make the image previews (grey.jpg, blur.jpg, canny.jpg, etc.) visible on GitHub:

• Make sure to run the script once and upload the generated images to your GitHub repo.
• Then, GitHub will show them in your README.md.

Would you like me to also make a .ipynb (Jupyter Notebook) version for this that you can directly upload to Colab or GitHub?