An Automatic Circuit Diagram Reader with Loop-Structure-Based Symbol Recognition
IEEE Transactions on Pattern Analysis and Machine Intelligence - Special Issue on Industrial Machine Vision and Computer Vision Technology:8MPart
A topology-based component extractor for understanding electronic circuit diagrams
Computer Vision, Graphics, and Image Processing
A Robust Algorithm for Text String Separation from Mixed Text/Graphics Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
A syntactic geometric approach to recognition of dimensions in engineering machine drawings
Computer Vision, Graphics, and Image Processing
On the Detection of Dominant Points on Digital Curves
IEEE Transactions on Pattern Analysis and Machine Intelligence
A System for Recognizing a Large Class of Engineering Drawings
IEEE Transactions on Pattern Analysis and Machine Intelligence
Sparse Pixel Vectorization: An Algorithm and Its Performance Evaluation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Indexing of Technical Line Drawing Databases
IEEE Transactions on Pattern Analysis and Machine Intelligence
Twenty Years of Document Image Analysis in PAMI
IEEE Transactions on Pattern Analysis and Machine Intelligence
Detection of Dimension Sets in Engineering Drawings
IEEE Transactions on Pattern Analysis and Machine Intelligence
Vector-Based Arc Segmentation in the Machine Drawing Understanding System Environment
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Client-Server Architecture for Document Image Recognition
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
Automated Analysis of Scanned Ducting Diagrams
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
A Really Useful Vectorization Algorithm
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
Engineering Drawing Database Retrieval Using Statistical Pattern Spotting Techniques
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
Text/Graphics Separation in Maps
GREC '01 Selected Papers from the Fourth International Workshop on Graphics Recognition Algorithms and Applications
Symbol Recognition: Current Advances and Perspectives
GREC '01 Selected Papers from the Fourth International Workshop on Graphics Recognition Algorithms and Applications
3D Object Recognition and Visualization on the Web
WI '01 Proceedings of the First Asia-Pacific Conference on Web Intelligence: Research and Development
Bar Charts Recognition Using Hough Based Syntactic Segmentation
Diagrams '00 Proceedings of the First International Conference on Theory and Application of Diagrams
A New Method for Segmenting Newspaper Articles
ECDL '98 Proceedings of the Second European Conference on Research and Advanced Technology for Digital Libraries
A Knowledge-Based Automated Vectorizing System for Geographic Information System
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
A robust algorithm for image principal curve detection
Pattern Recognition Letters
A Segmentation-free Approach for Keyword Search in Historical Typewritten Documents
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Associating Text and Graphics for Scientific Chart Understanding
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Robust and Accurate Vectorization of Line Drawings
IEEE Transactions on Pattern Analysis and Machine Intelligence
Extracting anchorable information units from PDF files
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
ARG Based on Arcs and Segments to Improve the Symbol Recognition by Genetic Algorithm
Graphics Recognition. Recent Advances and New Opportunities
VizDraw: A Platform to Convert Online Hand-Drawn Graphics into Computer Graphics
ICIAR '09 Proceedings of the 6th International Conference on Image Analysis and Recognition
A dynamic-rule-based framework of engineering drawing recognition and interpretation system
ICIC'07 Proceedings of the intelligent computing 3rd international conference on Advanced intelligent computing theories and applications
Modified 9DLT matrix for similarity retrieval of line-drawing images
PReMI'07 Proceedings of the 2nd international conference on Pattern recognition and machine intelligence
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A system for interpretation of images of paper-based line drawings is described. Since a typical drawing contains both text strings and graphics, an algorithm has been developed to locate and separate text strings of various font sizes, styles, and orientations. This is accomplished by applying the Hough transform to the centroids of connected components in the image. The graphics in the segmented image are processed to represent thin entities by their core-lines and thick objects by their boundaries. The core-lines and boundaries are segmented into straight line segments and curved lines. The line segments and their interconnections are analyzed to locate minimum redundancy loops which are adequate to generate a succinct description of the graphics. Such a description includes the location and attributes of simple polygonal shapes, circles, and interconnecting lines, and a description of the spatial relationships and occlusions among them. Hatching and filling patterns are also identified. The performance of the system is evaluated using several test images, and the results are presented. The superiority of these algorithms in generating meaningful interpretations of graphics, compared to conventional data compression schemes, is clear from these results.