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Gray-scale erosion algorithm based on image bitwise decomposition: application to focal plane processors
Frías-Velázquez, Andrés; Morros Rubió, Josep Ramon
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GPI - Grup de Processament d'Imatge i Vídeo
A novel approach to implement gray-scale morphological operations is presented in this work. This new technique is based on the bitwise decomposition of the gray-scale image, yielding bitplanes disposed according to their bit of significance. It is of particular interest for implementations on Focal Plane Processors. Our approach relies on the binary search method to obtain either the maximum or minimum on a local neighborhood by manipulating the binary levels resulting from the bitwise decomposition with simple logic functions. This contrasts significantly with the classical Threshold Decomposition (TD) approach, on which most of the current techniques are based on. Our method shows better efficiency than TD implementations. Further gains can be obtained because our method shows a strong dependency on the image dynamic range.
Àrees temàtiques de la UPC::Informàtica::Hardware
Image processing
Imatges -- Processament -- Tècniques digitals
Ordinadors -- Aplicacions

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