@techreport{TR-IC-00-12, number = {IC-00-12}, author = {A. X. Falcão and R. A. Lotufo and G. Araújo}, title = {The {Image} {Foresting} {Transformation}}, month = {July}, year = {2000}, institution = {Institute of Computing, University of Campinas}, note = {In English, 26 pages. \par\selectlanguage{english}\textbf{Abstract} In this paper, we introduce an image processing operator called Image Foresting Transformation (IFT). The image foresting transformation maps an input image into a graph, computes a shortest-path forest in this graph, and outputs an annotated image, which is basically an image and its associated forest. We describe the application of IFT to region growing, edge detection, Euclidean distance transform, geodesic distance computation, and watershed transformation. All the operators are efficiently computed using the same IFT algorithm based on the same set of parameters by changing only their meaning and values. We also present a new interactive image segmentation paradigm based on the region growing operator and discuss other applications of the IFT for boundary-based object definition and shape-based interpolation. } }