Automatic Linguistic Indexing of Pictures by a Statistical Modeling Approach
IEEE Transactions on Pattern Analysis and Machine Intelligence
Boosting Nearest Neighbor Classi.ers for Multiclass Recognition
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Workshops - Volume 03
Active semi-supervised fuzzy clustering for image database categorization
Proceedings of the 7th ACM SIGMM international workshop on Multimedia information retrieval
Extracting Subimages of an Unknown Category from a Set of Images
CVPR '06 Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 1
SVM-KNN: Discriminative Nearest Neighbor Classification for Visual Category Recognition
CVPR '06 Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2
Evaluating bag-of-visual-words representations in scene classification
Proceedings of the international workshop on Workshop on multimedia information retrieval
A comparison of color features for visual concept classification
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
Language modeling for bag-of-visual words image categorization
CIVR '08 Proceedings of the 2008 international conference on Content-based image and video retrieval
Sparse Multiscale Patches (SMP) for Image Categorization
MMM '09 Proceedings of the 15th International Multimedia Modeling Conference on Advances in Multimedia Modeling
Embedded lattices tree: An efficient indexing scheme for content based retrieval on image databases
Journal of Visual Communication and Image Representation
Classification of Images Based on Hidden Markov Models
CBMI '09 Proceedings of the 2009 Seventh International Workshop on Content-Based Multimedia Indexing
Beta wavelets. Synthesis and application to lossy image compression
Advances in Engineering Software - Advanced algorithms and architectures for signal processing
The Pascal Visual Object Classes (VOC) Challenge
International Journal of Computer Vision
kNN based image classification relying on local feature similarity
Proceedings of the Third International Conference on SImilarity Search and APplications
Variants of self-organizing maps
IEEE Transactions on Neural Networks
Graph-based approach for human action recognition using spatio-temporal features
Journal of Visual Communication and Image Representation
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The KNN classification algorithm is particularly suited to be used when classifying images described by local features. In this paper, we propose a novel image classification approach, based on local descriptors and the KNN algorithm. The proposed scheme is based on a hierarchical categorization tree that uses both supervised and unsupervised classification techniques. The unsupervised one is based on a hierarchical lattice vector quantization algorithm, while the supervised one is based on both feature vectors labelling and supervised feature selection method. The proposed tree improves the effectiveness of local feature vector classification and outperforms the exact KNN algorithm in terms of categorization accuracy.