global illumination

Global Illumination is a computer graphics technique that simulates how light behaves in a scene, creating more realistic images. Unlike simple lighting, which only considers direct light from a source, global illumination accounts for the way light bounces off surfaces, reflecting and refracting in various directions. This approach captures the subtle interactions between light and materials, resulting in natural-looking shadows, highlights, and color blending. Essentially, it enhances the visual quality of images by replicating how we perceive light in the real world, making scenes appear more lifelike and immersive.