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Automatic extraction of objects from aerial or satellite images have made significant progress in recent years. This paper presents an experimental model based on fuzzy logic system for identification of roads in SPOT sensor panchromatic images in Iran. Also the proposed model can be used for images such IKONOS. The method consists of three steps: feature(More)
BACKGROUND This study aimed to evaluate the prevalence of serum sodium and potassium disorders and assess their effects on mortality rate in hospitalized patients in the ICU and also to identify prognosis and predictors of survival. MATERIALS AND METHODS A retrospective case-control study was conducted on 457 hospitalized patients in the ICU of(More)
In this paper, a new classification scheme of polarimetric synthetic aperture radar (PolSAR) images using fractal dimension as contextual information is proposed. Support vector machines (SVM) due to their ability to handle the nonlinear classifier problem are applied to a new fractal feature vector, which is constructed from Pauli decomposed vector and(More)
Road networks are very important features in geospatial databases. Even though high-resolution optical satellite images have already been acquired for more than a decade, tools for automated extraction of road networks from these images are still rare. One consequence of this is the need for manual interaction which, in turn, is time and cost intensive. In(More)
Ali Ghafouri 1, Jalal Amini 1,*, Mojtaba Dehmollaian 2 and Mohammad Ali Kavoosi 3 1 School of Surveying and Geospatial Engineering, Faculty of Engineering, University of Tehran, Tehran 1439957131, Iran; ali.ghafouri@ut.ac.ir 2 Center of Excellence on Applied Electromagnetic Systems, School of Electrical and Computer Engineering, University of Tehran, Tehran(More)
Images are the most important data sources that used for problems in photogrammetry such as automatic object extraction, automatic orientation and so on. In the most problems, it needs to segment an image to unknown regions for further analysis. In this paper applied a model for segmentation of an image. The model is applied base on smoothed histogram of(More)