Modeling local descriptors with multivariate gaussians for object and scene recognition

@inproceedings{Serra2013ModelingLD,
  title={Modeling local descriptors with multivariate gaussians for object and scene recognition},
  author={Giuseppe Serra and Costantino Grana and Marco Manfredi and Rita Cucchiara},
  booktitle={ACM Multimedia},
  year={2013}
}
Common techniques represent images by quantizing local descriptors and summarizing their distribution in a histogram. In this paper we propose to employ a parametric description and compare its capabilities to histogram based approaches. We use the multivariate Gaussian distribution, applied over the SIFT descriptors, extracted with dense sampling on a spatial pyramid. Every distribution is converted to a high-dimensional descriptor, by concatenating the mean vector and the projection of the… CONTINUE READING

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