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Transfer requirements for target radiance simulation in optical projection simulators.

W E Woehl

    Applied Optics
    |February 6, 2010
    PubMed
    Summary

    Accurate target radiance simulation is crucial for valid scene simulations. This study derives the relationship between real target radiance and simulator source radiance, crucial for projection simulation techniques.

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    Area of Science:

    • Optics and Photonics
    • Image Simulation
    • Radiometry

    Background:

    • Valid simulation of target scenes necessitates high fidelity in spatial, dynamic, and radiance aspects.
    • This research focuses exclusively on target radiance (radiant sterance) and radiance contrast simulation.
    • Spatial and dynamic simulation aspects are treated as independent image transfer challenges.

    Purpose of the Study:

    • To analyze projection simulation techniques for target radiance and radiance contrast.
    • To derive the functional relationship between real-target radiant sterance and simulator source-sterance.
    • To investigate the influence of optical transfer functions, throughput, and spectral responsivity on this relationship.

    Main Methods:

    • Analysis of projection simulation techniques.
    • Derivation of functional relationships based on target radiance, optical properties, and recording medium responsivity.
    • Consideration of both logarithmic and linear exposure-density mechanisms.

    Main Results:

    • The required simulator source sterance is primarily determined by target sterance, gamma, and exposure.
    • For logarithmic exposure-density mechanisms, source sterance becomes independent of target sterance when the product of gamma values equals unity.
    • Established a functional relationship for radiance simulation fidelity.

    Conclusions:

    • The derived relationship is essential for accurate radiance simulation in projection systems.
    • Understanding the interplay between target sterance, optical systems, and recording mechanisms is key.
    • This work provides a foundation for simulating target radiance with high fidelity.

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