Indian topographical map symbols understanding system
Symbol understanding is a pre‐requisite for reading and interpretation of any map. Thus, any topographic map‐based automated system needs to understand generic symbols associated with the set of maps. The objective of this study was to develop an automated system for the understanding of Survey of I...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-04-01
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| Series: | IET Computer Vision |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/iet-cvi.2013.0311 |
| _version_ | 1797684802525069312 |
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| author | Nikam Gitanjali Ganpatrao Jayanta Kumar Ghosh |
| author_facet | Nikam Gitanjali Ganpatrao Jayanta Kumar Ghosh |
| author_sort | Nikam Gitanjali Ganpatrao |
| collection | DOAJ |
| description | Symbol understanding is a pre‐requisite for reading and interpretation of any map. Thus, any topographic map‐based automated system needs to understand generic symbols associated with the set of maps. The objective of this study was to develop an automated system for the understanding of Survey of India topographic map symbols. The system has been developed making use of shape analysis adopting a complex‐valued chain coding method for representation of the (exterior) boundary of the symbol. Fourier discrete transform and autocorrelation function have been used for shape descriptions. Classification and recognition have been implemented through a template matching method based on similarity measures. The system has been trained with 150 samples of 20 Indian topographic symbols and tested for 200 samples of each of the 20 symbols extracted from sample maps. Experimental results showed that the proposed method has an overall recognition rate of 84.68% as well as the improved mean average precision of symbol recognition. However, understanding of interconnected and/or crowded symbols may be taken up as future scope of this work. |
| first_indexed | 2024-03-12T00:35:04Z |
| format | Article |
| id | doaj.art-57293c04b4e6495b9f358f4e4fda6803 |
| institution | Directory Open Access Journal |
| issn | 1751-9632 1751-9640 |
| language | English |
| last_indexed | 2024-03-12T00:35:04Z |
| publishDate | 2015-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Computer Vision |
| spelling | doaj.art-57293c04b4e6495b9f358f4e4fda68032023-09-15T09:37:34ZengWileyIET Computer Vision1751-96321751-96402015-04-019230030810.1049/iet-cvi.2013.0311Indian topographical map symbols understanding systemNikam Gitanjali Ganpatrao0Jayanta Kumar Ghosh1Department of Civil EngineeringIndian Institute of Technology RoorkeeRoorkee247667IndiaDepartment of Civil EngineeringIndian Institute of Technology RoorkeeRoorkee247667IndiaSymbol understanding is a pre‐requisite for reading and interpretation of any map. Thus, any topographic map‐based automated system needs to understand generic symbols associated with the set of maps. The objective of this study was to develop an automated system for the understanding of Survey of India topographic map symbols. The system has been developed making use of shape analysis adopting a complex‐valued chain coding method for representation of the (exterior) boundary of the symbol. Fourier discrete transform and autocorrelation function have been used for shape descriptions. Classification and recognition have been implemented through a template matching method based on similarity measures. The system has been trained with 150 samples of 20 Indian topographic symbols and tested for 200 samples of each of the 20 symbols extracted from sample maps. Experimental results showed that the proposed method has an overall recognition rate of 84.68% as well as the improved mean average precision of symbol recognition. However, understanding of interconnected and/or crowded symbols may be taken up as future scope of this work.https://doi.org/10.1049/iet-cvi.2013.0311Indian topographical map symbols understanding systemtopographic map based automated systemgeneric symbolsshape analysiscomplex valued chain coding methodFourier discrete transform |
| spellingShingle | Nikam Gitanjali Ganpatrao Jayanta Kumar Ghosh Indian topographical map symbols understanding system IET Computer Vision Indian topographical map symbols understanding system topographic map based automated system generic symbols shape analysis complex valued chain coding method Fourier discrete transform |
| title | Indian topographical map symbols understanding system |
| title_full | Indian topographical map symbols understanding system |
| title_fullStr | Indian topographical map symbols understanding system |
| title_full_unstemmed | Indian topographical map symbols understanding system |
| title_short | Indian topographical map symbols understanding system |
| title_sort | indian topographical map symbols understanding system |
| topic | Indian topographical map symbols understanding system topographic map based automated system generic symbols shape analysis complex valued chain coding method Fourier discrete transform |
| url | https://doi.org/10.1049/iet-cvi.2013.0311 |
| work_keys_str_mv | AT nikamgitanjaliganpatrao indiantopographicalmapsymbolsunderstandingsystem AT jayantakumarghosh indiantopographicalmapsymbolsunderstandingsystem |