This book presents refereed and revised papers presented at GREC 2001, the 4th IAPR International Workshop on Graphics Recognition, which took place in Kingston, Ontario, Canada in September 2001. Graphics recognition is a branch of document image analysis that focuses on the recognition of two-dimensional notations such as engineering drawings, maps, mathematical notation, music notation, tables, and chemical structure diagrams. Due to the growing demand for both o?-line and on-line document recognition systems, the ?eld of graphics recognition has an excitingand promisingfuture. The GREC workshops provide an opportunity for researchers at all levels of experience to share insights into graphics recognition methods. The workshops enjoy strongparticipation from researchers in both industry and academia. They are sponsored by IAPR TC-10, the Technical Committee on Graphics Recog- tion within the International Association for Pattern Recognition. Edited v- umes from the previous three workshops in this series are available as Lecture Notes in Computer Science, Vols. 1072, 1389, and 1941. After the GREC 2001 workshop, authors were invited to submit enhanced versions of their papers for review. Every paper was evaluated by three reviewers. We are grateful to both authors and reviewers for their careful work during this review process. Many of the papers that appear in this volume were thoroughly revised and improved, in response to reviewers’ suggestions.
Author(s): El-Fathi El-Mejbri, Hans Grabowski, Harald Kunze, Ralf-Stefan Lossack, Arno Michelis (auth.), Dorothea Blostein, Young-Bin Kwon (eds.)
Series: Lecture Notes in Computer Science 2390
Edition: 1
Publisher: Springer-Verlag Berlin Heidelberg
Year: 2002
Language: English
Pages: 370
Tags: Pattern Recognition; Image Processing and Computer Vision; Computer Graphics; Artificial Intelligence (incl. Robotics); Discrete Mathematics in Computer Science; Algorithm Analysis and Problem Complexity
3D Reconstruction of Paper Based Assembly Drawings: State of the Art and Approach....Pages 1-12
Interpretation of Low-Level CAD Data for Knowledge Extraction in Early Design Stages....Pages 13-24
Knowledge-Based Partial Matching: An Efficient Form Classification Method....Pages 25-35
Robust Frame Extraction and Removal for Processing Form Documents....Pages 36-45
Issues in Ground-Truthing Graphic Documents....Pages 46-67
Sketch-Based User Interface for Inputting Graphic Objects on Small Screen Devices....Pages 67-80
Experimental Evaluation of a Trainable Scribble Recognizer for Calligraphic Interfaces....Pages 81-91
User Interfaces for On-Line Diagram Recognition....Pages 92-103
Symbol Recognition: Current Advances and Perspectives....Pages 104-128
An Error-Correction Graph Grammar to Recognize Texture Symbols....Pages 128-138
Perceptual Organization as a Foundation for Graphics Recognition....Pages 139-147
Exploiting Perceptual Grouping for Map Analysis, Understanding and Generalization: The Case of Road and River Networks....Pages 148-157
Extraction of Contextual Information Existing among Component Elements of Origami Books....Pages 158-166
Text/Graphics Separation in Maps....Pages 167-177
Semantic Analysis and Recognition of Raster-Scanned Color Cartographic Images....Pages 178-189
Structure Based Interpretation of Unstructured Vector Maps....Pages 190-199
Generating Logic Descriptions for the Automated Interpretation of Topographic Maps....Pages 200-210
Scan-to-XML: Using Software Component Algebra for Intelligent Document Generation....Pages 211-221
Interpreting Sloppy Stick Figures by Graph Rectification and Constraint-Based Matching....Pages 222-235
Using a Generic Document Recognition Method for Mathematical Formulae Recognition....Pages 236-244
Interpreting Line Drawing Images: A Knowledge Level Perspective....Pages 245-255
Smoothing and Compression of Lines Obtained by Raster-to-Vector Conversion....Pages 256-265
A Scale and Rotation Parameters Estimator Application to Technical Document Interpretation....Pages 266-272
Improving the Accuracy of Skeleton-Based Vectorization....Pages 273-288
Structural Rectification of Non-planar Document Images: Application to Graphics Recognition....Pages 289-298
An Effective Vector Extraction Method on Architectural Imaging Using Drawing Characteristics....Pages 299-309
Thresholding Images of Line Drawings with Hysteresis....Pages 310-319
A Recognition Method of Matrices by Using Variable Block Pattern Elements Generating Rectangular Area....Pages 320-329
Music Manuscript Tracing....Pages 330-342
Extended Summary of the Arc Segmentation Contest....Pages 343-349
TIF2VEC, An Algorithm for Arc Segmentation in Engineering Drawings....Pages 350-358
RANVEC and the Arc Segmentation Contest....Pages 359-364
Summary of Panel Discussions at GREC’2001....Pages 365-366
