2013 Cover Image: Prism

Ben Spencer and Mark W. Jones



This image depicts a glass prism backlit by a strong point emitter. A false colour scheme has been applied to the refracted caustic based on a parameterisation of the primal trajectory of each photon. When encoded by the photon map, this information can be used to dissociate subtle, interlaced or high-frequency structure in caustic illumination. Combined with photon relaxation, noise is effectively removed while minimising bias and loss of detail due to diffusion. The full algorithm is described in our paper, Photon Parameterisation for Robust Relaxation Constraints, presented at Eurographics 2013.

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B. Spencer and M. W. Jones, 2013 Cover Image: Prism, Computer Graphics Forum, 2013, 32(1), 216-217


	author = {Spencer, Ben and Jones, Mark W.},
	title = {2013 Cover Image: Prism},
	journal = {Computer Graphics Forum},
	year = {2013},
	volume = {32},
	pages = {216--217},
	number = {1},
	date = {2013-02-21},
	doi = {10.1111/cgf.12017},
	issn = {1467-8659},
	publisher = {Blackwell Publishing Ltd},
	url = {http://dx.doi.org/10.1111/cgf.12017}