how to geotag---the lecture for lksh gis society.ppt

How to Geotag

Lector: Wang Yaohui (Happy)

OutlineWhat Is Tag?What is Geotag?Why Geotag?Where Geotag?How to Geotag?What’s next for you?

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

吳敏瑜

莊期棋

阿輝

蕃薯藤

蔡曉暄

Typical Category

Shall We?

吳龜

犀牛

馴獸師

蕃薯牌

豬

Examples

Source:http://myweb.hinet.net/home10/blue-jimny/TOP.html

My tags: 南二段 台灣之美 山岳 攝影 旅遊 登山 百岳 運動

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

Geocoding also refers to the process of taking non-coordinate based geographical identifiers, such as a postal address, and converting them into geographic coordinates.

Source: ibid

Also

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.

Source: ibid

Why Geotag?

Where Geotag?

geotagged geo:lat=latitude e.g. geo:lat=51.4989 geo:lon=longitude e.g. geo:lon=-0.1786

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

How to Geotag?

Just type it by using Google Earth, Google Map, PaPaGo or Urmap .

Or use real map.

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!

GeobloggersGMiF - Google Maps in FlickrSteeev's Geotagging scriptsGeoTagging Flickr ForumFirefoxGreasemonkeyGoogle MapsGoogle Earth製作一個屬於自己的旅遊地圖 (use geobloggers)

Check them later!

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.