MT
M. Tripathi
2 records found
1
While various tracking algorithms have demonstrated effectiveness in terrestrial and aerial contexts, their performance in underwater settings remains unexplored. Object tracking in underwater videos presents unique challenges due to variable lighting, water turbidity, and unpred
...
While various tracking algorithms have demonstrated effectiveness in terrestrial and aerial contexts, their performance in underwater settings remains unexplored. Object tracking in underwater videos presents unique challenges due to variable lighting, water turbidity, and unpredictable camera movement, all of which are likely to hinder the performance of traditional detection and tracking methods. Addressing this gap is crucial for applications such as marine biology research, underwater surveillance, and autonomous underwater vehicles.
This thesis first evaluates existing tracking algorithms, SORT, ByteTrack, and Bag-of-Tricks SORT (BoT-SORT), each incorporating motion estimation and linear data assignment methods on a novel underwater video dataset with a moving camera. The thesis then improves on the SORT algorithm by adopting velocity estimation techniques, a formula-based and an optical flow-based, giving rise to two new algorithms, SORT-V and SORT-OF. Furthermore, the thesis proposes a novel tracker that utilises an Interacting Multiple Model filter to estimate the location of the target object. The evaluation focuses on finding a balance between specific metrics, such as tracking accuracy, identity switches, and the number of tracked and lost trajectories. The results indicate that using velocity estimation techniques improves the tracking accuracy by 11% and tracks more objects by nearly halving the number of lost objects. Incorporating a constant acceleration model in the IMM filter gives the best result, with the highest tracking accuracy and with the least number of identity switches, all in real-time computational speed.
This thesis first evaluates existing tracking algorithms, SORT, ByteTrack, and Bag-of-Tricks SORT (BoT-SORT), each incorporating motion estimation and linear data assignment methods on a novel underwater video dataset with a moving camera. The thesis then improves on the SORT algorithm by adopting velocity estimation techniques, a formula-based and an optical flow-based, giving rise to two new algorithms, SORT-V and SORT-OF. Furthermore, the thesis proposes a novel tracker that utilises an Interacting Multiple Model filter to estimate the location of the target object. The evaluation focuses on finding a balance between specific metrics, such as tracking accuracy, identity switches, and the number of tracked and lost trajectories. The results indicate that using velocity estimation techniques improves the tracking accuracy by 11% and tracks more objects by nearly halving the number of lost objects. Incorporating a constant acceleration model in the IMM filter gives the best result, with the highest tracking accuracy and with the least number of identity switches, all in real-time computational speed.
Journal article
(2010)
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J.
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P.I.
Blum
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P.I.
Blum
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W.
de Boer
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W.
de Boer
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M.D.
Frey
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M.D.
Frey
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X.J.A.
Janssen
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X.J.A.
Janssen
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M.F.
Heinrich
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M.F.
Heinrich
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P.L.A.
Sturm
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P.L.A.
Sturm
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P.L.A.
Sturm
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I.
PAPADOPOULOS
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I.
PAPADOPOULOS
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D.A.
Horváth
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D.A.
Horváth
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D.A.
Horváth
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N.G.
Toth
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N.G.
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S.
Bansal
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S.
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M.
Jindal
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M.
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M.
Kaur
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M.
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M.
Mehta
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M.
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A.
Sharma
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A.
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J.
Maes
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J.
Maes
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A.
Singh
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A.
Singh
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J.
Singh
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J.
Singh
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S
Singh
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S
Singh
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S.
Ahuja
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S.
Ahuja
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S.
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S.
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S.
Bhattacharya
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S.
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S.
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P.
Gupta
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P.
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S.
Jain
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S.
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S.
Jain
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S.
Jain
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M.
Jha
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M.
Jha
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M.G.V.
Maes
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M.G.V.
Maes
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A
Kumar
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A
Kumar
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A.
Srivastava
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A.
Srivastava
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R.D.
Choudhury
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R.D.
Choudhury
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D.
Dutta
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D.
Dutta
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A.
Mohanty
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A.
Mohanty
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T.
Aziz
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T.
Aziz
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A.
Gurtu
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A.
Gurtu
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A.
Nayak
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A.
Nayak
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A.
Saha
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A.
Saha
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S.
Banerjee
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S.
Banerjee
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A.
Marinov
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A.
Marinov
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A.
Jafari
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A.
Jafari
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M.
Maggi
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M.
Maggi
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R.T.
Rajan
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R.T.
Rajan
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A.
Perrotta
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A.
Perrotta
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R.
Travaglini
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R.
Travaglini
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R.
Travaglini
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S.
Costa
(author),
S.
Costa
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S.
Costa
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R.
D'Alessandro
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R.
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R.
D'Alessandro
(author),
A.
Russo
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A.
Russo
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M.
Michelotto
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M.
Michelotto
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S.
Ventura
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S.
Ventura
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A.
Dimitrov
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A.
Dimitrov
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C.
Riccardi
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C.
Riccardi
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C.
Riccardi
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A.O.
Kraan
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A.O.
Kraan
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L.
Martini
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L.
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(author),
S
Sarkar
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S
Sarkar
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M.
Costa
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M.
Costa
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M.
Costa
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M.
Marone
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M.
Marone
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M.
Marone
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S.
Chang
(author),
S.
Chang
(author),
J.
Chung
(author),
J.
Chung
(author),
D.H.
Kim
(author),
D.H.
Kim
(author),
G.
Kim
(author),
G.
Kim
(author)
Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these problems in the data. The methods have been tested on cosmic
...
Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these problems in the data. The methods have been tested on cosmic ray muon data, calorimeter noise data, and single beam data collected with CMS in 2008. The noise rejection algorithms can be applied to LHC collision data at the trigger level or in the offline analysis. The application of the algorithms at the trigger level is shown to remove 90% of noise events with fake missing transverse energy above 100 GeV, which is sufficient for the CMS physics trigger operation.
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