Method and program product for determining a radiance field in an optical environment
First Claim
1. A method of determining a radiance field in an optical environment, said method comprising the steps of:
- generating a model of the optical environment;
partitioning the modeled, optical environment into discreet, contiguous regions; and
applying Monte Carlo techniques to determine an optical response function for each region for which the optical response function cannot be analytically defined; and
reporting the optical response function determined by application of the Monte Carlo techniques.
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Accused Products
Abstract
A hybrid method is presented by which Monte Carlo techniques are combined with iterative relaxation techniques to solve the Radiative Transfer Equation in arbitrary one-, two- or three-dimensional optical environments. The optical environments are first divided into contiguous regions, or elements, with Monte Carlo techniques then being employed to determine the optical response function of each type of element. The elements are combined, and the iterative relaxation techniques are used to determine simultaneously the radiance field on the boundary and throughout the interior of the modeled environment. This hybrid model is capable of providing estimates of the under-water light field needed to expedite inspection of ship hulls and port facilities. It is also capable of providing estimates of the subaerial light field for structured, absorbing or non-absorbing environments such as shadows of mountain ranges within and without absorption spectral bands such as water vapor or CO2 bands.
36 Citations
17 Claims
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1. A method of determining a radiance field in an optical environment, said method comprising the steps of:
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generating a model of the optical environment; partitioning the modeled, optical environment into discreet, contiguous regions; and applying Monte Carlo techniques to determine an optical response function for each region for which the optical response function cannot be analytically defined; and reporting the optical response function determined by application of the Monte Carlo techniques. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A program product for determining a radiance field in an optical environment wherein program product code is stored on computer readable media and comprises:
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a modeling code stored on the computer readable media for generating a model of the optical environment; a partitioning code stored on the computer readable media for partitioning the modeled, optical environment into discreet, contiguous regions; and an application code stored on the computer readable media for applying Monte Carlo techniques to determine an optical response function for each region for which the optical response function cannot be analytically defined. - View Dependent Claims (16, 17)
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Specification