Hi,
Robert, sorry for misleading you.
Thanks for Chris 'Xenon' Hanson's great translation. To represent the
steep cliff accurately, both height data and image are at a diagonal angle. If
the data are stored on a horizontal plane, the steep's image will be stretched
evidently . If not use the diagonal angle of photogrammetry, VPB will set the
steef on a horizontal plane. I just wanna build the diagonal steef and its
mother-area(straight down data) together. All data is Geotiff format, projected
coordinate system. Could you give me some further clues?
------------------ Original ------------------
From: "Chris 'Xenon' Hanson"<xe...@alphapixel.com>;
Date: Fri, Jun 5, 2009 10:46 PM
To: "OpenSceneGraph Users"<osg-users@lists.openscenegraph.org>;
Subject: Re: [osg-users] [VirtualPlanetBuilder]How to apply side texture
tothe escarpment?
Robert Osfield wrote:
> Hi Xuex Chen,
> I'm afraid I don't understand the issue that you have. VPB can deal
> with datasets in different projections by coordinate systems them all
> into the same coordinate system that the final database will end up
> in, as long as your data has all the correct coordinate system info
> embedded (such as GeoTiff) in it should simply be a case of add all
> your files to the osgdem/vpbmaster command line.
It sounds to me like some of his data is on an off-nadir axis, IE, not shot
straight
down but rather at a diagonal angle in order to better capture the imagery and
relief of
steep cliff-like areas.
Is this correct?
> Robert.
--
Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com
PixelSense Landsat processing now available! http://www.alphapixel.com/demos/
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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