https://github.com/musatahawar/image-to-sketch

This Python script utilizes the OpenCV library to convert a given image into a pencil sketch effect. It performs several image processing steps to achieve this effect, including image inversion, Gaussian blur, and image division.
https://github.com/musatahawar/image-to-sketch

imaetosketch python sketcheffect

Last synced: 5 days ago
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This Python script utilizes the OpenCV library to convert a given image into a pencil sketch effect. It performs several image processing steps to achieve this effect, including image inversion, Gaussian blur, and image division.

• Host: GitHub
• URL: https://github.com/musatahawar/image-to-sketch
• Owner: MusaTahawar
• License: mit
• Created: 2023-11-15T07:54:40.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-11-15T08:03:18.000Z (about 1 year ago)
• Last Synced: 2024-11-09T17:19:00.777Z (2 months ago)
• Topics: imaetosketch, python, sketcheffect
• Language: Python
• Homepage:
• Size: 7.81 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Pencil Sketch Effect using OpenCV

This Python script utilizes the OpenCV library to convert a given image into a pencil sketch effect. It performs several image processing steps to achieve this effect, including image inversion, Gaussian blur, and image division.

## Overview

The script follows these main steps:

1. **Reading the Image:**

    - Imports the original image file in PNG format using OpenCV's `cv2.imread()` function.

    - Displays the original image in a window using `cv2.imshow()`.

2. **Converting to Black & White:**

    - Converts the original image to grayscale using `cv2.cvtColor()` with `cv2.COLOR_BGR2GRAY`.

    - Displays the grayscale image in a new window.

3. **Creating an Inverted Image:**

    - Inverts the grayscale image to create a negative image by subtracting pixel values from 255.

    - Displays the inverted image.

4. **Applying Gaussian Blur:**

    - Performs Gaussian blur on the inverted image using `cv2.GaussianBlur()`.

    - Inverts the blurred image again to restore it to its original state.

5. **Generating Pencil Sketch Effect:**

    - Divides the grayscale image by the inverted blurred image to create a pencil sketch effect.

    - Displays the resulting pencil sketch image.

6. **Displaying the Result:**

    - Displays both the original image and the final pencil sketch side by side for comparison.

## Usage

1. **Requirements:**

    - Python installed on your system.

    - OpenCV library (`cv2`) installed. You can install it via pip: `pip install opencv-python`.

2. **Clone the Repository:**

    ```bash

    git clone https://github.com/Musatahawar/image-to-sketch.git

    ```

3. **Run the Script:**

    ```bash

    python pencil_sketch.py

    ```

4. **Instructions:**

    - The script will display different stages of the image processing. Press any key to move to the next stage.

    - Finally, the original image and its pencil sketch effect will be displayed for comparison.

## Notes

- You can modify the script to adjust parameters like the blur radius (`(21, 21)` in `cv2.GaussianBlur()`) to achieve different effects.

- This script is a simple demonstration of creating a pencil sketch effect. Further refinements and adjustments can be made to enhance the effect.

## Author

This script was developed by Musa Tahawar.