The European Conference on Computer Vision (ECCV) has established itself as a major event in this exciting and very active field of research. This two- volume proceedings collects the 115 papers accepted for presentation at the 3rd ECCV, held in Stockholm in May 1994. The papers were selected from over 300 submissions and together give a well balanced reflection of the state of the art in computer vision. The papers in Volume I are grouped under the following headings: Geometry and shape, Optical flow and motion fields, Image features, Motion and flow, Motion segmentation and tracking, Ego-motion and 3D recovery, Recognition, Shape modelling, Shape estimation, Calibration