Skip to Main content Skip to Navigation
Conference papers

Light Random Regression Forests for Automatic, Multi-Organ Localization in CT Images

Prasad N Samarakoon 1 Emmanuel N Promayon 1 Celine Fouard 1 
1 TIMC-IMAG-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur
TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525
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.
Document type :
Conference papers
Complete list of metadata

Cited literature [9 references]  Display  Hide  Download
Contributor : Emmanuel Promayon Connect in order to contact the contributor
Submitted on : Thursday, March 30, 2017 - 12:27:19 PM
Last modification on : Wednesday, November 3, 2021 - 6:02:18 AM


Files produced by the author(s)


  • HAL Id : hal-01498629, version 1



Prasad N Samarakoon, Emmanuel N Promayon, Celine Fouard. Light Random Regression Forests for Automatic, Multi-Organ Localization in CT Images. IEEE International Symposium on Biomedical Imaging ISBI'17, Apr 2017, Melbourne, Australia. ⟨hal-01498629⟩



Record views


Files downloads