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COORDINATES COMPARISON OF GOOGLE? MAPS AND ORTHOPHOTO MAPS IN THAILAND |
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| รหัสดีโอไอ | |
| Creator | Deeboon Methakullachat, Boonsap Witchayangkoon |
| Title | COORDINATES COMPARISON OF GOOGLE? MAPS AND ORTHOPHOTO MAPS IN THAILAND |
| Contributor | - |
| Publisher | TuEngr Group |
| Publication Year | 2562 |
| Journal Title | International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies |
| Journal Vol. | 10 |
| Journal No. | 17 |
| Page no. | 10A17O: 1-8 |
| Keyword | Map accuracy, Geographic coordinates, Accuracy checkpoints, Google map error, High-resolution satellite image. |
| URL Website | http://tuengr.com/Vol10_17.html |
| Website title | ITJEMAST V10(17) 2019 @ TuEngr.com |
| ISSN | 2228-9860 |
| Abstract | Google Maps are online maps that have a large number of users around the world. Google Maps uses satellite data from many sources, which have different resolutions, varying in each location around the world. For this reason, Google does not have the policy to declare the accuracy of Google Maps data with respect to any specific area. This research conducts a study on the horizontal positional accuracy of Google Maps in Thailand by comparing 3,970 checkpoint coordinates read from Google Maps with corresponding coordinates read from Orthophotos 1:4,000 scale of the Ministry of Agriculture and Cooperatives of Thailand. The results reveal an average error of 3.3 meters, with a minimum error of 0.0 meters and the maximum error of 28.6 meters. Readers can view the checkpoint location together with the verified results of each individual checkpoint by following the Google Maps link created in this research. |
