1. Guest editorial: Qualitative vision

   • Y. Aloimonos

   EditorialNotes Pages: 115 - 117

2. Context-free attentional operators: The generalized symmetry transform

   • Daniel Reisfeld
   • Haim Wolfson
   • Yehezkel Yeshurun

   OriginalPaper Pages: 119 - 130

3. Optical flow from 1-D correlation: Application to a simple time-to-crash detector

   • Nicola Ancona
   • Tomaso Poggio

   OriginalPaper Pages: 131 - 146

4. Passive navigation as a pattern recognition problem

   • Cornelia Fermüller

   OriginalPaper Pages: 147 - 158

5. Divergent stereo in autonomous navigation: From bees to robots

   • José Santos-Victor
   • Giulio Sandini
   • Stefano Garibaldi

   OriginalPaper Pages: 159 - 177

6. Discrete event modeling of visually guided behaviors

   • Jana Košecka
   • Henrik I. Christensen
   • Ruzena Bajcsy

   OriginalPaper Pages: 179 - 191