A hybrid codebook model for object categorization using two-way clustering based codebook generation method

摘要

Both the visual codebook and the codebook model are considered as two main parts of most object classification frameworks. In the original codebook model, each image descriptor is encoded using a single codebook obtained usually using a clustering approach. In this paper, we propose a hybrid codebook model for an object classification task. A simultaneous clustering approach is applied to image descriptors to generate two variant codebooks and used them separately to encode and represent an image through a patch-based codebook model and a feature-based codebook model respectively. The proposed codebook model has been tested on the Caltech-101 dataset. Experimental results demonstrate state-of-the-art performance compared to typical clustering-based codebook model.