Image-Based Lighting (IBL) is a technique used in computer graphics and 3D rendering to simulate realistic lighting environments by capturing and using high dynamic range (HDR) images. These images contain a wide range of lighting information, including color, intensity, and direction, which can be used to illuminate 3D scenes and objects with accurate and lifelike lighting effects.
IBL works by projecting HDR images onto a virtual dome or sphere surrounding the 3D scene, allowing the scene to be illuminated by the light and reflections present in the captured environment. This technique helps to create more realistic and visually appealing renderings by accurately simulating the way light interacts with different surfaces and materials.
One of the key benefits of using Image-Based Lighting is that it simplifies the process of setting up complex lighting scenarios in 3D scenes. Instead of manually placing and configuring multiple light sources, artists can simply use HDR images to achieve realistic lighting effects with minimal effort.
IBL is commonly used in industries such as animation, visual effects, architecture, and product design to create photorealistic renderings and immersive virtual environments. By accurately capturing and utilizing real-world lighting data, Image-Based Lighting helps to enhance the visual quality and realism of computer-generated images.
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