Road discrimination

[joongsun]

Dear Grass gurus !!

I am looking for a method to extract roads automatically 
in remote sensed imagery such as Landsat TM or SPOT.
Does anyone have idea of a sophisticated approach to the problem ?
Information on previous works or publications would help me very
much.

Thank you in advance,

Joong-Sun Won
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Geology Lab., KORDI
e-mail:  jswon at sari.kordi.re.kr
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