Digital image processing algorithms
Digital image processing algorithms
Automatic Region Labeling of the Layered Map
Selected Papers from the First International Workshop on Graphics Recognition, Methods and Applications
Verification-Based Approach for Automated Text and Feature Extraction from Raster-Scanned Maps
Selected Papers from the First International Workshop on Graphics Recognition, Methods and Applications
Conversion of high level information from scanned maps into geographic information systems
ICDAR '95 Proceedings of the Third International Conference on Document Analysis and Recognition (Volume 1) - Volume 1
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In this paper, an automatic method for the detection of houses which represented black points on the large size scanned topographic map is described. Various signals such as characters, lines, signs, and dashed lines may overlapped with the house symbol. After contour detection method is used for detecting isolated houses. Run-length encoding method is used for manipulating houses touching with grid lines. Character and symbol elimination and morphological operations is done for the houses touched to roads and borderlines. Various recognition results are described.