Overview:

This project involved creating a pixel-level chroma key compositor using OpenGL and C++. The goal was to replace a green screen background in a video sequence with a static image background by analyzing and replacing each pixel based on color thresholds.

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Tools and Techniques Used:

• Visual Studio Code

• C++

• OpenGL

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Process:

• Used OpenGL as the rendering base and C++ for per-pixel color comparison and replacement.

• Extracted RGB values from both the foreground (video frame) and background (image) using bitwise operations.

• Computed pixel color differences to identify green screen areas and dynamically replaced those regions with corresponding background pixels.

• Rendered the final composited frames to display a seamless video integration of the foreground subject into a new environment.

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Result:
A functional real-time green screen replacement pipeline demonstrating the fundamentals of computer graphics, color space manipulation, and pixel-based compositing.