6.4. Conclusion
Traditionally, the real and computer-generated worlds have been fundamentally separate spaces, each subject to their own laws of physics and aesthetics. The development of global illumination rendering techniques enabled light in computer-generated worlds to obey the same laws of physics as light in the real world, making it possible to render strikingly realistic images. Using the principles of global illumination, image-based lighting makes it possible for the real and computer-generated worlds to interact through lighting: real-world light can be captured and used to illuminate computer-generated objects, and light within the computer can be used to illuminate people and objects in the real world. This chapter has shown basic ...
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