SAR Image Feature Selection and Change Detection Based on Sparse Coefficient Correlation

High-dimensional features extraction and selection is of great significance for synthetic aperture radar (SAR) image change detection. In this paper, a feature selection based on sparse coefficient correlation, abbreviated as SR-PCC, is proposed to realize the local reconstruction of known samples, so as to improve the accuracy of change detection. Firstly, high-dimensional texture features are extracted from real SAR images and then fused by stacking. Secondly, for the known samples, the sparse representation is performed and then the sparse coefficients are obtained. Then, the Pearson correlation coefficient method is used to select sparse coefficients related to the image itself, thus realizing local optimal reconstruction. Finally, the selected features are inputted into the support vector machine (SVM) to realize change detection. Experiments on real SAR images demonstrate the effectiveness of the proposed SR-PCC in high-dimensional feature selection and illustrate that it can provide better change detection maps.