Hi Roy,
This is where specialist image processing software such as ER Mapper comes
in. ER Mapper treats every "image" as a grid, thus allowing all types of
operations such as complex filtering, classifications, raster->vector
polygons, statistics, 3d views etc.
Check out www.ermapper.com for more info.
Best Regards,
Martin Higham
Manager - GIS Services
Encom Technology
PO Box 727 ph 61 3 9428 4088
Richmond fx 61 3 9428 0470
Vic 3121 mob 61 3 624 117
Australia www.encom.com.au
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Roy Chiappini
> Sent: Sunday, 5 December 1999 16:56
> To: Damian Skeeles
> Cc: [EMAIL PROTECTED]
> Subject: Re: MI Calculate Raster Area / Convert to Vector
>
>
> Damian has a reasonable request and one that seems to
> identify somewhat of
> a weakness in MI, i.e., ability to do something with raster images.
>
> I use MI and Vertical Mapper. Vertical Mapper uses is quite
> flexible with
> grid (grd & grc) files.
>
> All that is needed is to be able to convert a raster image to
> a .grd file
> in one of the formats that is recognizable with either or
> both MI and VM.
>
> This appears to be a real chore. At least, I haven't seen
> any 'successful'
> results or discussions about it.
>
> All of my inqueries have left me feeling like I'm the only
> one in the world
> who doesn't know how to convert an image into an ascii array
> of values that
> are related to image colors. Then that file could be
> modified with the
> appropriate header and be importable via Vertical Mapper and
> wa la you have
> a grid file that you can do something with.
>
> I have been dinking around, off and on, breaks for Army Navy
> & Gators and
> Bama, and haven't solved it yet.
>
> Damians edge detector idea would be great, but what about drawing the
> regions after the image w/edges detected is georeference.
> Then you gotta
> create a new map and trace over the regions. I takes enough
> time that the
> quest for the better way is the only way.
>
> Any hints would be appreciated
>
> Roy
>
>
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