Road discrimination

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

Geology Lab., KORDI
e-mail: jswon@sari.kordi.re.kr

On Fri, 4 Mar 1994, joongsun wrote:

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.

It's just like carving an elephant: start with a block of wood, and take
away everything that doesn't look like an elephant.

Although I'm not the epitome of an imagery whiz, I seem to recall that
even SPOT data gives you an awful lot of trouble finding classifications
that hold still for the kind of linear features you're looking for.

-- Mark

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