Algebraic Frames for the Perception Action Cycle : International Workshop AFPAC97 Kiel Germany September 8 9 1997 Proceedings The book constitutes the refereed proceedings of the International Workshop on Algebraic Frames for the Perception Action Cycle AFPAC 97 held in Kiel Germany in September 1997.The volume presents 12 revised full papers carefully reviewed and selected for inclusion in the book. Also included are 10 full invited papers by leading researchers in the area providing a representative state of the art assessment of this rapidly growing field. The papers are organized in topical sections on PAC systems low level and early vision recognition of visual structure processing of 3D visual space representation and shape perception inference and action and visual and motor neurocomputation