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How to Geotag---the lecture for LKSH GIS society.ppt
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How to Geotag---the lecture for LKSH GIS society.ppt

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2006 12/7林高GIS社團上課講義

2006 12/7林高GIS社團上課講義

Published in: Economy & Finance, Technology

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Transcript

  • 1. How to Geotag Lector: Wang Yaohui (Happy)
  • 2. Outline
    • What Is Tag?
    • What is Geotag?
    • Why Geotag?
    • Where Geotag?
    • How to Geotag?
    • What’s next for you?
  • 3. What Is Tag?
    • A special string of characters embedded in marked-up text to indicate the structure or format.
    Source: www.cs.cornell.edu/wya/DigLib/MS1999/glossary.html
  • 4. 吳敏瑜 莊期棋 阿輝 蕃薯藤 蔡曉暄 Typical Category
  • 5. Shall We? 吳龜 犀牛 馴獸師 蕃薯牌 豬
  • 6. Examples Source: http://myweb.hinet.net/home10/blue-jimny/TOP.html
  • 7. My tags: 南二段 台灣之美 山岳 攝影 旅遊 登山 百岳 運動
  • 8. What is Geotag?
    • GeoTagging , sometimes referred to as Geocoding , is the process of adding geographical identification metadata to various media such as websites, RSS feeds, or images. This data usually consists of latitude and longitude coordinates , though it can also include altitude and place names.
    Source:http://en.wikipedia.org/wiki/GeoTagging
  • 9.
    • Geocoding also refers to the process of taking non-coordinate based geographical identifiers, such as a postal address, and converting them into geographic coordinates .
    Also Source: ibid
  • 10.
    • GeoTagging can help users find a wide variety of location-specific information. For instance, one can find images taken near a given location by entering a latitude and longtitude into a GeoTagging-enabled image search engine. GeoTagging-enabled information services can also potentially be used to find news, websites, or other resources.
    Why Geotag? Source: ibid
  • 11. Where Geotag?
    • geotagged
    • geo:lat= latitude e.g. geo:lat=51.4989
    • geo:lon= longitude e.g. geo:lon=-0.1786
  • 12.
    • where latitude and longitude are the geographic coordinates of a particular location. These are expressed in decimal degrees in the WGS84 coordinate system, which has become something of a default coordinate system with the advent of GPS .
    At Taiwan, we can use TWD 97
  • 13. How to Geotag?
    • Just type it by using Google Earth , Google Map , PaPaGo or Urmap .
    • Or use real map.
  • 14. Do it Directly!
    • .CK’s GMiF
    • Dan’s Geobloggers
    • Steeev’s Greasemonkey scripts
    • UrMap Plus (Please docheck Geotagging Flickr in UrMap )
    • Geotagging with Google Earth
    Definitely, you need to use Firefox + Greasemonkey!
  • 15.
    • Geobloggers GMiF - Google Maps in Flickr Steeev's Geotagging scripts GeoTagging Flickr Forum Firefox Greasemonkey Google Maps Google Earth 製作一個屬於自己的旅遊地圖 (use geobloggers )
    Check them later!
  • 16. What we need to do today?
    • Upload our fieldwork photos
    • Use GMiF to geotag our fieldwork photos.
    • Try to use more than one solution beside GMiF.
    • Compare different solutions of geotagging
    • Figure out the framework of your project.

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