merge scanned map

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HarterE

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Mar 28, 2010, 6:52:10 PM3/28/10
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I tried to merge 2x3 scanned pieces of a map.
The result was very poor.

Does anybody have experience with this?

Kevin Wilton

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Mar 28, 2010, 6:56:46 PM3/28/10
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I tried to merge 2x3 scanned pieces of a map.
The result was very poor.

Does anybody have experience with this?

Flat copy artwork? Do it in Photoshop.

mick crane

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Mar 28, 2010, 7:00:09 PM3/28/10
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yes but I think I did it with photoshop.
http://www.mickiwiki.com/?p=26

John Houghton

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Mar 29, 2010, 2:35:56 AM3/29/10
to PTGui Support
On Mar 28, 11:52 pm, HarterE <ewald.har...@gmail.com> wrote:
> I tried to merge 2x3 scanned pieces of a map.
> The result was very poor.

PTGui is designed to stitch images shot from a single viewpoint by
rotating the camera. Flat stitching, where the camera is shifted
sideways, it is not supported, though there are two techniques that
can give good results:

1. Specify a very small field of view lens parameter - 0.1 degrees (or
200000mm focal length, crop factor 1). Then in Advanced mode,
optimize only yaw pitch and roll on all images except one - the
anchor. Use the Fit button on the Panorama Editor window to see the
output image, otherwise the window may look completely blank with a
tiny, near invisible image.

2. Use a more normal fictitious focal length of 50mm, say, and
optimize the lens shift parameters (d & e) together with the roll
parameter for all images except the anchor image. See this Hugin
tutorial, which can readily be adapted for PTGui in Advanced mode:
http://hugin.sourceforge.net/tutorials/scans/en.shtml .

Otherwise, the stitcher in CS4 offers flat stitching, as does the free
Microsoft stitcher ICE.

John

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