The primary raster: a multiresolution image description

Abstract

The primary raster is a multiresolution image description. This description has the form of a raster where each pixel (edgel) has four characteristics: the detection scale, the blurring scale, the local contrast, and an edgel type. The detection scale is the finest resolution where the edgel appears, while the blurring scale is the coarsest resolution where the edgel is still present. The local contrast is the difference of the mean intensities taken from each side of the edgel. The edgel type depends on the evolution of the gradient from the finest to the coarsest resolution. Experimental results on the primary raster are presented. It is concluded that the primary raster provides a basis for a higher-level image description.<>