Multiresolution Gray-Scale and Rotation Invariant Texture Classification with Local Binary Patterns
IEEE Transactions on Pattern Analysis and Machine Intelligence
Comparing salient point detectors
Pattern Recognition Letters
SVM '02 Proceedings of the First International Workshop on Pattern Recognition with Support Vector Machines
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
Fast Spatial Pattern Discovery Integrating Boosting with Constellations of Contextual Descriptors
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
A Performance Evaluation of Local Descriptors
IEEE Transactions on Pattern Analysis and Machine Intelligence
Image classification using cluster cooccurrence matrices of local relational features
MIR '06 Proceedings of the 8th ACM international workshop on Multimedia information retrieval
Automatic medical image annotation in ImageCLEF 2007: Overview, results, and discussion
Pattern Recognition Letters
Discriminative cue integration for medical image annotation
Pattern Recognition Letters
Deformations, patches, and discriminative models for automatic annotation of medical radiographs
Pattern Recognition Letters
Sparse patch-histograms for object classification in cluttered images
DAGM'06 Proceedings of the 28th conference on Pattern Recognition
Support vector machines for histogram-based image classification
IEEE Transactions on Neural Networks
Overview of the ImageCLEFmed 2006 medical retrieval and medical annotation tasks
CLEF'06 Proceedings of the 7th international conference on Cross-Language Evaluation Forum: evaluation of multilingual and multi-modal information retrieval
Medical image annotation and retrieval using visual features
CLEF'06 Proceedings of the 7th international conference on Cross-Language Evaluation Forum: evaluation of multilingual and multi-modal information retrieval
Medical image classification with multiple kernel learning
ICIMCS '10 Proceedings of the Second International Conference on Internet Multimedia Computing and Service
Semantics extraction from images
Knowledge-driven multimedia information extraction and ontology evolution
Bag of spatio-visual words for context inference in scene classification
Pattern Recognition
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Image annotation and classification are important areas where pattern recognition algorithms can be applied. In this article we report the insights that we have gained during our participation in the ImageCLEF medical annotation task during the years 2006 and 2007. Grayscale radiograph images taken from clinical routine had to be classified into one of the 116 base classes or labeled with attributes which described various properties of the radiograph. We present an algorithm based on local relational features which is robust with respect to illumination changes. It incorporates the geometric constellation of the feature points during the matching process and thus obtains superior performance. Furthermore, a hierarchical classification scheme is presented which reduces the computational complexity of the classifier.