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Multi Threaded Real-Time Image and Video Compression using OpenCV

This project demonstrates real-time image and video compression using OpenCV in C++. It provides an interactive application that allows the user to choose between image or video compression, specify the compression level, and visualize the results.

Features

  • Image Compression:

    • Allows the user to select an image file for compression.
    • Supports multi-threading for efficient compression.
    • Calculates the compression percentage and displays it on the compressed image.
    • Displays the original and compressed images side by side.

  • Video Compression:

    • Utilizes the webcam as the video source for compression.
    • Implements multi-threading to enable real-time compression while capturing frames.
    • Calculates the compression percentage for each frame and displays it on the video window.
    • Provides separate windows for displaying the original video and the compressed output.

Prerequisites

  • C++ compiler supporting C++11 or later.
  • OpenCV library (version 2.4 or later) installed.
  • Webcam connected to the system (for video compression).

Usage

  1. Clone the repository or download the project files.

  2. Ensure that OpenCV is properly installed and configured.

  3. Compile the project using a C++ compiler with the OpenCV library linked. For example, using g++:

  4. Run the compiled executable.

  5. The program will prompt you to choose between image or video compression. Enter your choice accordingly.

  6. If you selected image compression:

  • Enter the compression level as a percentage (e.g., 50 for 50% compression).
  • The program will display the original and compressed images side by side, along with the compression percentage.
  1. If you selected video compression:
  • Enter the compression level as a percentage (e.g., 50 for 50% compression).
  • The program will open two windows: "Original Video" and "Compressed Output".
  • The "Original Video" window displays the real-time video feed from the webcam.
  • The "Compressed Output" window displays the compressed video with the compression percentage overlayed on each frame.
  • Press 'q' to exit the program.

Notes

  • Image Compression:

  • The input image file should be in a supported format (e.g., JPEG, PNG).

  • Adjust the compression level to balance between image quality and file size.

  • Video Compression:

  • Ensure that the webcam is properly connected and accessible by the program.

  • Adjust the compression level to control the trade-off between video quality and file size.

  • The frame rate of the compressed video is the same as the frame rate of the webcam feed.

License

This project is licensed under the MIT License.

Simulation

Initial Prompt

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Image Compression

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Live Webcam Video Compression

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Contributions to this project are welcome! If you find any issues or have suggestions for improvement, please create an issue or submit a pull request.

Acknowledgments

This project utilizes the power of OpenCV to enable real-time image and video compression. Special thanks to the OpenCV community for their fantastic work.