Compressed histogram attribute profiles for the classification of VHR remote sensing images

Romano Battiti; Begüm Demir; Lorenzo Bruzzone

doi:10.1117/12.2195988

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15 October 2015 Compressed histogram attribute profiles for the classification of VHR remote sensing images

Romano Battiti, Begüm Demir, Lorenzo Bruzzone

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Proceedings Volume 9643, Image and Signal Processing for Remote Sensing XXI; 96430R (2015) https://doi.org/10.1117/12.2195988
Event: SPIE Remote Sensing, 2015, Toulouse, France

Abstract

This paper presents a novel compressed histogram attribute profile (CHAP) for classification of very high resolution remote sensing images. The CHAP characterizes the marginal local distribution of attribute filter responses to model the texture information of each sample with a small number of image features. This is achieved based on a three steps algorithm. The first step is devoted to provide a complete characterization of spatial properties of objects in a scene. To this end, the attribute profile (AP) is initially built by the sequential application of attribute filters to the considered image. Then, to capture complete spatial characteristics of the structures in the scene a local histogram is calculated for each sample of each image in the AP. The local histograms of the same pixel location can contain redundant information since: i) adjacent histogram bins can provide similar information; and ii) the attributes obtained with similar attribute filter threshold values lead to redundant features. In the second step, to point out the redundancies the local histograms of the same pixel locations in the AP are organized into a 2D matrix representation, where columns are associated to the local histograms and rows represents a specific bin in all histograms of the considered sequence of filtered attributes in the profile. This representation results in the characterization of the texture information of each sample through a 2D texture descriptor. In the final step, a novel compression approach based on a uniform 2D quantization strategy is applied to remove the redundancy of the 2D texture descriptors. Finally the CHAP is classified by a Support Vector Machine classifier with histogram intersection kernel that is very effective for high dimensional histogram-based feature representations. Experimental results confirm the effectiveness of the proposed CHAP in terms of computational complexity, storage requirements and classification accuracy when compared to the other AP-based methods.

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Romano Battiti, Begüm Demir, and Lorenzo Bruzzone "Compressed histogram attribute profiles for the classification of VHR remote sensing images", Proc. SPIE 9643, Image and Signal Processing for Remote Sensing XXI, 96430R (15 October 2015); https://doi.org/10.1117/12.2195988

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