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Accuracy assessment is an important issue for validation of image classification. There are several tools that provide accuracy analysis using confusion matrix, Kappa coefficients and others incorporated in ERDAS_IMAGINE, ArcGIS, ENVI, Geomatica etc. There are some of tools available for soft or sub-pixel classification which gives fraction images as output like, FUZCEN, SMIC. Each fraction image...
The paper introduces the concept of orientation entropy for quantifying the propensity of a pixel belonging to the edge. Intensity variation at a pixel is measured as an integral of a logarithmic function over all possible direction which represents the heterogeneity of intensity variation in the neighborhood of that point. This is unlike traditional edge filters which uses divergence operator considering...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.