000138875 001__ 138875
000138875 005__ 20190316234557.0
000138875 037__ $$aREP_WORK
000138875 245__ $$aA Master-Slave Approach to Detect and Match Objects Across Several Uncalibrated Moving Cameras
000138875 269__ $$a2009
000138875 260__ $$c2009
000138875 336__ $$aReports
000138875 520__ $$aMost multi-camera systems assume a well structured environment to detect and match objects across cameras. Cameras need to be fixed and calibrated. In this work, a novel system is presented to detect and match any objects in a network of uncalibrated fixed and mobile cameras. A master-slave system is presented. Objects are detected with the mobile cameras (the slaves) given only their observations from the fixed cameras (the masters). No training stage and data are used. Detected objects are correctly matched across cameras leading to a better understanding of the scene. A cascade of dense region descriptors is proposed to describe any object of interest. Various region descriptors are studied such as color histogram, histogram of oriented gradients, Haar-wavelet responses, and covariance matrices of various features. The proposed approach outperforms existing work such as scale invariant feature transform (SIFT), or the speeded up robust features (SURF). Moreover, a sparse scan of the image plane is proposed to reduce the search space of the detection and matching process, approaching nearly real-time performance. The approach is robust to changes in illuminations, viewpoints, color distributions and image quality. Partial occlusions are also handled.
000138875 700__ $$aAlahi, Alexandre
000138875 700__ $$aVandergheynst, Pierre
000138875 700__ $$0240563$$g118332$$aBierlaire, Michel
000138875 700__ $$aKunt, Murat
000138875 8564_ $$uhttp://transp-or2.epfl.ch/technicalReports/AlahVandBierKunt09.pdf$$zURL
000138875 8564_ $$uhttps://infoscience.epfl.ch/record/138875/files/AlahVandBierKunt09.pdf$$zn/a$$s3483018$$yn/a
000138875 909C0 $$xU11418$$0252123$$pTRANSP-OR
000138875 909CO $$qGLOBAL_SET$$pENAC$$ooai:infoscience.tind.io:138875$$preport
000138875 937__ $$aTRANSP-OR-REPORT-2009-001
000138875 970__ $$aREP-AlahVandBierKunt09/TRANSP-OR
000138875 973__ $$sPUBLISHED$$aEPFL
000138875 980__ $$aREPORT