Emmanuel Promayon

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SPF17

P. Samarakoon, E. Promayon, C. Fouard. Light Random Regression Forests for Automatic, Multi-Organ Localization in CT Images. In IEEE International Symposium on Biomedical Imaging ISBI'17, April 2017.

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Abstract

Classic Random Regression Forests (RRFs) used for multi-organ localization describe the random process of multivari-ate regression by storing the histograms of offset vectors along each bounding wall direction per leaf node. On the one hand, the RAM and storage requirements of classic RRFs may become exorbitantly high when such a RRF consists of many leaf nodes, but on the other hand, a large number of leaf nodes are required for better localization. We introduce Light Random Regression Forests (LRRFs) which eliminate the need to describe the random process by formulating the localization prediction based on the random variables that describe the random process. Consequently, LRRFs with the same localization capabilities require less RAM and storage space compared to classic RRFs. LRRF comprising 4 trees with 17 decision levels is approximately 9 times faster, takes 10 times less RAM, and uses 30 times less storage space compared to a similar classic RRF

Keywords

[ Respiration ] [ Softtissue ]

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Emmanuel Promayon http://membres-timc.imag.fr/Emmanuel.Promayon

BibTex Reference

@InProceedings{SPF17,
   Author = {Samarakoon, P. and Promayon, E. and Fouard, C.},
   Title = {Light Random Regression Forests for Automatic, Multi-Organ Localization in {CT} Images},
   BookTitle = {IEEE International Symposium on Biomedical Imaging ISBI'17},
   Month = {April},
   Year = {2017}
}

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