title: [Integration of soft and hard classifications using linear spectral mixture model and support vector machines].
abstract: This paper presents a new soft and hard classification. By analyzing the target objects in the image distribution, and calculating the adaptive threshold automatically, the image is divided into three regions: pure regions, non-target objects regions and mixed regions. For pure regions and non-target objects regions, hard classification method (support vector machine) is used to quickly extract classified results; For mixed regions, soft classification method (selective endmember for linear spectral mixture model) is used to extract the abundance of target objects. Finally, it generates an integrated soft and hard classification map. In order to evaluate the accuracy of this new method, it is compared with SVM and LSMM using ALOS image. The RMSE value of new method is 0.203, and total accuracy is 95.48%. Both overall accuracies and RMSE show that integration of hard and soft classification has a higher accuracy than single hard or soft classification. Experimental results prove that the new method can effectively solve the problem of mixed pixels, and can obviously improve image classification accuracy.
authors.affiliation: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China. hutangao@163.com
authors.forename: Tan-Gao
authors.initials: TG
authors.lastname: Hu
authors.forename: Yao-Zhong
authors.initials: YZ
authors.lastname: Pan
authors.forename: Jin-Shui
authors.initials: JS
authors.lastname: Zhang
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Le