Abstract
We consider a d-dimensional Boolean model \(\varXi = (\varXi _1+X_1)\cup (\varXi _2+X_2)\cup \cdots \) generated by a Poisson point process \(\{X_i, i\ge 1\}\) with intensity measure \(\varLambda \) and a sequence \(\{\varXi _i, i\ge 1\}\) of independent copies of some random compact set \(\varXi _0\,\). Given compact sets \(K_1,\ldots ,K_{\ell }\), we show that the discrete random vector \((N(K_1),\ldots ,N(K_\ell ))\), where \(N(K_j)\) equals the number of shifted sets \(\varXi _i+X_i\) hitting \(K_j\), obeys an \(\ell \)-variate Poisson distribution with \(2^{\ell }-1\) parameters. We obtain explicit formulae for all these parameters which can be estimated consistently from an observation of the union set \(\varXi \) in some unboundedly expanding window \(W_n\) (as \(n \rightarrow \infty \)) provided that the Boolean model is stationary. Some of these results can be extended to unions of Poisson k-cylinders for \(1\le k < d\) and more general set-valued functionals of independently marked Poisson processes.
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Bräu, C., Heinrich, L. Multivariate Poisson distributions associated with Boolean models. Metrika 79, 749–761 (2016). https://doi.org/10.1007/s00184-016-0576-x
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DOI: https://doi.org/10.1007/s00184-016-0576-x
Keywords
- Random closed sets
- Independently marked Poisson process
- Generating functional
- Multivariate probability generating function
- Higher-order covariances
- Empirical volume fraction