TY - GEN
T1 - Directional mathematical morphology approach for line thinning and extraction of character strings from maps and line drawings
AU - Luo, Huizhu
AU - Agam, Gady
AU - Dinstein, Its'hak
N1 - Funding Information:
Traditional means for recording of land use maps, roads, and various utilities ( like water, gas, and sewers in pipes, and electricity, telephone, and television in cables ) have been for many decades based on hand drawn and/or printed paper maps. The rapid growth of the volume and the complexity of maps, and the development of computer aided design technology gave rise to the development of computerized Geographical and Land Information Systems (GIs and LIS)[ 11. Computerized representation of maps and line drawings enables effkient updating and facilitates computer aided design for land development, architecture, and similar disciplines. The conversion of printed maps into computerized data This work was supported in part by the Paul Ivanier Center for Robotics and Production Automation, Ben Gurion University of the Negev, Beer Sheva, 84105, Israel.
Publisher Copyright:
© 1995 IEEE.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - The use of computer aided design requires line drawings and m p s to be digitized and stored in databases. The input of line drawings and nwps into data bases requires vectorization of lines, and recognition of symbols and characters. This paper addresses two aspects reluted to the input process. The first aspect is an autonwtic algorithm for the separation of character strings ,fona mps. The second aspect is an algorithm .for line thinning. The proposed algorithms are based on directional morphology operations. The character string extraction algorithm is independent of font style, size, and language and is suitable for a variety of nwp styles with straight or curved lines. The presented experimental results demonstrate very good performance of the algorithms even in cases where the character strings touch or intersect lines in the map.
AB - The use of computer aided design requires line drawings and m p s to be digitized and stored in databases. The input of line drawings and nwps into data bases requires vectorization of lines, and recognition of symbols and characters. This paper addresses two aspects reluted to the input process. The first aspect is an autonwtic algorithm for the separation of character strings ,fona mps. The second aspect is an algorithm .for line thinning. The proposed algorithms are based on directional morphology operations. The character string extraction algorithm is independent of font style, size, and language and is suitable for a variety of nwp styles with straight or curved lines. The presented experimental results demonstrate very good performance of the algorithms even in cases where the character strings touch or intersect lines in the map.
UR - http://www.scopus.com/inward/record.url?scp=0005041784&partnerID=8YFLogxK
U2 - 10.1109/ICDAR.1995.598989
DO - 10.1109/ICDAR.1995.598989
M3 - Conference contribution
AN - SCOPUS:0005041784
T3 - Proceedings of the International Conference on Document Analysis and Recognition, ICDAR
SP - 257
EP - 260
BT - Proceedings of the 3rd International Conference on Document Analysis and Recognition, ICDAR 1995
PB - IEEE Computer Society
T2 - 3rd International Conference on Document Analysis and Recognition, ICDAR 1995
Y2 - 14 August 1995 through 16 August 1995
ER -