“Mixture of Linear SVMs for Multiclass Classification of EPPs on Hyperspectral Image" Patt Khuwuthyakorn1,2,3, Jun Zhou2, Antonio Robles-Kelly2,3
1 Cooperative Research Centre for National Plant Biosecurity 2 Australian National University 3 National ICT Australia (NICTA) biosecurity built on science Cooperative Research Centre for National Plant Biosecurity
Hyperspectral image
Image source: http://www-sipl.technion.ac.il biosecurity built on science
Image source: http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4642.2011.00761.x biosecurity built on science
Previous work Hyperspectral Image Descriptors Structural Learning Method for EPPs Detection
Example : Coddling moth
biosecurity built on science
Mixture of Linear Support Vector Machines (MLSVM) max Y
max Y
min Y
min Y min X
max X Training data
min X
max X MLSVM
biosecurity built on science
Piece-wise MLSVM max Y
max Y
K=20
min Y
min Y
min X
max X Training data
min X
max X
Piece-wise MLSVM
biosecurity built on science
Parameter estimation Maximum Likelihood Estimation(MLE) by optimising log-likelihood function using the EM algorithm. E-step estimates the value of loglikelihood function M-step updates parameters for the model biosecurity built on science
About the number of mixtures Accuracy vs number of mixture (4 classes spiral)
Accuracy
100%
Multi-class MLSVM 1
Multi-class MLSVM 2
80% 60% 40% 20% 0% 5
25
45
65
85
Number of mixtures (k)
biosecurity built on science
Pruning technique by mixture weights
biosecurity built on science
Random Data
D1-D2
D3-D30 (random)
biosecurity built on science
Pruning technique by combination coefficients
biosecurity built on science
D1-D2
D3-D4
D5-D6
D7-D8
D9-D10
D11-D30 biosecurity built on science
biosecurity built on science
M-MLSVM1
M-MLSVM2
SVM
Qfly
OFM
Medfly
FSBB
biosecurity built on science
biosecurity built on science
570-580nm 470-480nm
NIR 720+nm
620-630nm
biosecurity built on science
Acknowledgements Cooperative Research Centre for National Plant Biosecurity (CRCNPB) National ICT Australia (NICTA) CSIRO Entomology Australian National University (ANU)
biosecurity built on science
Thank you More information: pattaraporn.khuwuthyakorn@gmail.com
biosecurity built on science