Objects information as a source of image features

Abstract: Digital color images are the most important data types used in various vital applications, some of these applications required image features. Digital images contain variable number of objects with variable sizes. Each object contains valuable information which can be used to construct image features. In this paper research we will analyze a variety of information which are used to describe any object in the image, a methodology of objects extraction and the associated with each object will be proposed, a way of forming the image features will be discussed. Key words: Digital image, object, features, centroid, area, extrema, orientation, convex Hull, Euclidian distance.