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Erratum

Erratum Erratum Erratum "An information-theoretic approach to interactions in images", G. Boccignone and M. Ferraro, Spatial Vision 12(3), 345 - 362 (1999). Equations (4) and (5) in the article are not correct, however, the conclusions still hold, the reasoning is as follows. Let /5 be the random number of photons impinging on pixel s. If no interactions are taken into account, we can assume that m photons are randomly allocated one at a time among N sites with uniform spatial probability. Thus the total number of photons is For any given m the number of distinguishable configurations, i.e. the number of different images, is given by (Feller, 1968) Suppose that m E Jo = 10, 1 , ... , Mo}, where Mo is the maximum number of photons that can reach the retina. The number n of distinguishable configurations is given by the sum of nm, the configurations for a fixed m: (Feller, 1968). Note that, however the distributions of photons for every site s are not independent since they must satisfy constraint 1 for any given m. Suppose now that the number of photons ms that can reach each site s is independent from .sl, and let, for http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Spatial Vision (continued as Seeing & Perceiving from 2010) Brill

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Publisher
Brill
Copyright
© 1999 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0169-1015
eISSN
1568-5683
DOI
10.1163/156856899X00283
Publisher site
See Article on Publisher Site

Abstract

Erratum Erratum "An information-theoretic approach to interactions in images", G. Boccignone and M. Ferraro, Spatial Vision 12(3), 345 - 362 (1999). Equations (4) and (5) in the article are not correct, however, the conclusions still hold, the reasoning is as follows. Let /5 be the random number of photons impinging on pixel s. If no interactions are taken into account, we can assume that m photons are randomly allocated one at a time among N sites with uniform spatial probability. Thus the total number of photons is For any given m the number of distinguishable configurations, i.e. the number of different images, is given by (Feller, 1968) Suppose that m E Jo = 10, 1 , ... , Mo}, where Mo is the maximum number of photons that can reach the retina. The number n of distinguishable configurations is given by the sum of nm, the configurations for a fixed m: (Feller, 1968). Note that, however the distributions of photons for every site s are not independent since they must satisfy constraint 1 for any given m. Suppose now that the number of photons ms that can reach each site s is independent from .sl, and let, for

Journal

Spatial Vision (continued as Seeing & Perceiving from 2010) – Brill

Published: Jan 1, 1999

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