Realistic sky simulations are created in a computer generated graphics environment by incorporating captured image data of real sky over a time period, and converting these images into a streams of textures over time which can be sampled as a function of space and time within a game engine. The captured image data include data captured from a light probe indicating intensity and direction of light and a presumed direction of the sun. To capture such image data, an image capture rig comprising multiple cameras and a light probe is used. The image data captured from such cameras over a time period are processed to generate data used by an animation engine to produce photorealistic images of the sky.
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