Chroma Key App

A college project in Python using OpenCV.
A simple app that takes two images, one with green areas and one background image, and replaces the green regions with the background.

Content

• Dependencies
• Installation
• Usage

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Dependencies

1. Python 3.7.0

The app may work with other versions, but this is the version that was used during development.

Installation

1. Create a new directory, for example chromakey, and place app.py inside it.
2. Open the directory in your terminal:

cd chromakey

3. Create a virtual environment:

python -m venv opencv-env

4. Activate the environment:

.\opencv-env\Scripts\activate

5. Install required packages:

pip install opencv-contrib-python matplotlib

Usage

1. Run the app using the following syntax:

python app.py img_filename bk_filename ofilename

Where:

• img_filename - path to an image with a green screen.
• bk_filename - path to the background image.
• ofilename - path to save the edited image. If none is provided, it will be displayed instead.