Details

Autor(en) / Beteiligte

• Serra, Giuseppe
• Grana, Costantino
• Manfredi, Marco
• Cucchiara, Rita

Titel

Covariance of Covariance Features for Image Classification

Ist Teil von

• Proceedings of International Conference on Multimedia Retrieval, 2014, p.411-411

Ort / Verlag

New York, NY, USA: ACM

Erscheinungsjahr

2014

Link zum Volltext

Quelle

ACM Digital Library

Beschreibungen/Notizen

• In this paper we propose a novel image descriptor built by computing the covariance of pixel level features on densely sampled patches and encoding them using their covariance. Appropriate projections to the Euclidean space and feature normalizations are employed in order to provide a strong descriptor usable with linear classifiers. In order to remove border effects, we further enhance the Spatial Pyramid representation with bilinear interpolation. Experimental results conducted on two common datasets for object and texture classification show that the performance of our method is comparable with state of the art techniques, but removing any dataset specific dependency in the feature encoding step.