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/* |
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================================================================== |
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Bias compensation for photon density estimates |
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For background see: |
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R. Schregle, "Bias Compensation for Photon Maps", |
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Computer Graphics Forum, v22:n4, pp. 729-742, Dec. 2003. |
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Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
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(c) Fraunhofer Institute for Solar Energy Systems, |
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Lucerne University of Applied Sciences & Arts |
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================================================================== |
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$Id: pmapbias.h,v 1.3 2014/09/24 09:36:16 taschreg Exp $ |
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*/ |
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#ifndef PMAPBIASCOMP_H |
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#define PMAPBIASCOMP_H |
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#include "pmapdata.h" |
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/* Bias compensation weighting function */ |
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/* #define BIASCOMP_WGT(n) 1 */ |
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/* #define BIASCOMP_WGT(n) (n) */ |
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#define BIASCOMP_WGT(n) ((n) * (n)) |
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/* #define BIASCOMP_WGT(n) ((n) * (n) * (n)) */ |
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/* #define BIASCOMP_WGT(n) exp(0.003 * (n)) */ |
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/* Dump photon bandwidth for bias compensated density estimates */ |
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/* #define BIASCOMP_BWIDTH */ |
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void biasComp (PhotonMap*, COLOR); |
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/* Photon density estimate with bias compensation, returning irradiance. |
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Expects photons in search queue after a kd-tree lookup. */ |
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void volumeBiasComp (PhotonMap*, const RAY*, COLOR); |
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/* Photon volume density estimate with bias compensation, returning |
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irradiance. Expects photons in search queue after a kd-tree lookup. */ |
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#endif |
