Interpretation is the processes of detection, identification, description and assessment of an object and pattern imaged. Visual interpretation is the ability of a human operator to identify an object through the data content in an image / photo by combining several elements of interpretation. The image characteristics used in the interpretation process are: shape, size, tone/colour, texture, shadow, neighbourhood and pattern. The importance of the image characteristics varied according to the spatial resolution of the images and the properties of the feature of interest. The interpretation can be performed on the single image or between several images acquired at different time, which result in the differentiation of the temporal changes. The principle of the image interpretation is the process of delineating (digitalizing) the outlines of the objects, features on the image. It is performed “on-screen” using a GIS software. The process of visual interpretation is time consuming and requires a skilled interpreter with knowledge of the study area. Even though, the image interpretation supports many applications in for example selection of the training and verification data sets for image classification and accuracy assessment.