Structural Syntactic and Statistical Pattern Recognition : Joint IAPR International Workshops SSPR 2004 and SPR 2004 Lisbon Portugal August 18 20 2004. Proceedings This book constitutes the refereed proceedings of the 10th International Workshop on Structural and Syntactic Pattern Recognition SSPR 2004 and the 5th International Workshop on Statistical Techniques in Pattern Recognition SPR 2004 held jointly in Lisbon Portugal in August 2004. The 59 revised full papers and 64 revised poster papers presented together with 4 invited papers were carefully reviewed and selected from 219 submissions. The papers are organized in topical sections on graphs; visual recognition and detection; contours lines and paths; matching and superposition; transduction and translation; image and video analysis; syntactics languages and strings; human shape and action; sequences and graphs; pattern matching and classification; document image analysis; shape analysis; multiple classifier systems; density estimation; clustering; feature selection; classification; and representation