Fast computation of moment invariants
Pattern Recognition
Pattern recognition with moment invariants: a comparative study and new results
Pattern Recognition
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Reconstruction of the 3D Structure of a Building from the 2D Drawings of its Floors
ICDAR '99 Proceedings of the Fifth International Conference on Document Analysis and Recognition
A Prototype System for interpreting Hand-Sketched Floor Plans
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Case-based reasoning for design composition in architecture
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Relational indexing of vectorial primitives for symbol spotting in line-drawing images
Pattern Recognition Letters
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DAS '10 Proceedings of the 9th IAPR International Workshop on Document Analysis Systems
Touch & Write: a multi-touch table with pen-input
DAS '10 Proceedings of the 9th IAPR International Workshop on Document Analysis Systems
Symbol spotting in vectorized technical drawings through a lookup table of region strings
Pattern Analysis & Applications
a.SCAtch - A Sketch-Based Retrieval for Architectural Floor Plans
ICFHR '10 Proceedings of the 2010 12th International Conference on Frontiers in Handwriting Recognition
Indexing with well-founded total order for faster subgraph isomorphism detection
GbRPR'11 Proceedings of the 8th international conference on Graph-based representations in pattern recognition
ICDAR '11 Proceedings of the 2011 International Conference on Document Analysis and Recognition
Improved Automatic Analysis of Architectural Floor Plans
ICDAR '11 Proceedings of the 2011 International Conference on Document Analysis and Recognition
Symbol Spotting in Line Drawings through Graph Paths Hashing
ICDAR '11 Proceedings of the 2011 International Conference on Document Analysis and Recognition
Text/Graphics Segmentation in Architectural Floor Plans
ICDAR '11 Proceedings of the 2011 International Conference on Document Analysis and Recognition
Wall Patch-Based Segmentation in Architectural Floorplans
ICDAR '11 Proceedings of the 2011 International Conference on Document Analysis and Recognition
Symbol spotting in technical drawings using vectorial signatures
GREC'05 Proceedings of the 6th international conference on Graphics Recognition: ten Years Review and Future Perspectives
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The contribution of this article is twofold. First, we propose a sketch-based system, namely the a.SCatch system, for querying a floor plan repository. Second, for generating such a repository, a novel complete system for floor plan analysis is presented. The latter system extracts the semantics from existing floor plans. We introduce novel preprocessing methods, e.g., the differentiation between thick, medium, and thin lines and the removal of components outside the convex hull of the outer walls. Especially, the use of the convex hull increases the performance of the final system. The a.SCatch system enables the user to easily access knowledge from past projects. The user searches for semantically similar floor plans just by drawing parts of the new plan. An algorithm extracts the semantic structure sketched by the architect on DFKI's Touch &Write table. Finally, the extracted structures are compared using the graph matching, and the most similar one is retrieved. In our experiments for floor plan analysis on a reference data set we compare our approach to other approaches available in the literature. We show that our floor plan analysis system outperforms previous systems. Also the performance of the sketch recognition system is quite high. Overall, the performance of the floor plan analysis, as well as of the retrieval, is already good for the use in practice.