Intelligent Database Systems Lab 國立雲林科技大學 National Yunlin University of Science and Technology 1 Self Organizing Maps and Bit Signature: a study applied.

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Presentation transcript:

Intelligent Database Systems Lab 國立雲林科技大學 National Yunlin University of Science and Technology 1 Self Organizing Maps and Bit Signature: a study applied on Signal Language Recognition Presenter : Wei-Hao Huang Authors : Marrony N. Neris, Alexandre J. Silva, Sarajane M. Peres, Franklin C. Flores IJCNN, 2008

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 2 Outlines Motivation Objectives Methodology Experiments Conclusions Comments

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 3 Motivation  In Brazil1 verified that 3.3% of 169,872,856 Brazilians are deaf or are people that claim to have great difficulty to listen.  Assistive technologies are destined to make easy the life of disabled people.

Intelligent Database Systems Lab N.Y.U.S.T. I. M. Objectives 4  To propose an artificial neural network application and a style of image representation on the LIBRAS (Brazilian Signal Language) recognition problem. Process O

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 5 Methodology Bit Signature Unified Distance Matrix (U-Matrix) Self Organizing Map

Intelligent Database Systems Lab N.Y.U.S.T. I. M. Bit Signature 6 Horizontal bit signatureVertical bit signature

Intelligent Database Systems Lab N.Y.U.S.T. I. M. Unified Distance Matrix (U-Matrix) 7 SOM map Three clusters ProcessU-Matrix

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 8 SOM training process U-matrix

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 9 SOM map labeling process U-matrix

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 10 SOM testing process

Intelligent Database Systems Lab N.Y.U.S.T. I. M. Experiments LIBRAS signals46 LIBRAS signals

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 12 Conclusions  The generalization demanded by this situation is really hard, but this approach is able to realize a good work.  The future work is to improve recognizer performance.

Intelligent Database Systems Lab N.Y.U.S.T. I. M. 13 Comments  Advantages ─ Visual analysis  Applications ─ SOM