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Boris,<br>
<br>
Use gdalwarp to convert your jpeg to Geographic coordinates (I
think it needs to be converted for KML anyways):<br>
<br>
gdalwarp -t_srs EPSG:4326 in.jpg out.jpg<br>
<br>
then use gdalinfo to get the corner coordinates.<br>
<br>
Currently the entire page of the PDF is rendered into the image.
Perhaps we can convince Even to add an option to convert only the
mapped area (or mask everything else?)<br>
<br>
Best Regards,<br>
Brent Fraser<br>
<br>
On 10/20/2010 8:07 AM, Boris Dev wrote:
<blockquote
cite="mid:AANLkTimhcvjRK1RYZ4_HbUr74QeB3j5ZHMcpkEuDOojq@mail.gmail.com"
type="cite">My objective is to make a KML ground overlay with a
geospatial PDF map.<br>
<br>
Using GDAL's translate utility I have converted the PDF to a JPEG.
The next step and problem for me is to write the text of the KML
ground overlay, which requires a text of bounding box information
like this:<br>
<br>
<pre><LatLonBox>
<north>37.91904192681665</north>
<south>37.46543388598137</south>
<east>15.35832653742206</east>
<west>14.60128369746704</west>
<rotation>-0.1556640799496235</rotation>
</LatLonBox></pre>
<br>
As GDAL's output, I saw that the entire PDF with legend, title,
etc and not just the map image was converted.<br>
<br>
As GDAL's output, I also saw 2 parts of data that seem they are
useful to match a bounding box to the map within the jpeg, but I
cant figure out the puzzle of how to make this work? Can I get the
bounding box of the entire PDF image with this information below?<br>
<br>
<font style="font-family: courier new,monospace;" size="1">Corner
Coordinates:<br>
Upper Left ( 666937.758, 2024687.983) <br>
Lower Left ( 666991.811, 2018338.153) <br>
Upper Right ( 674511.276, 2024754.795) <br>
Lower Right ( 674565.328, 2018404.965) <br>
Center ( 670751.543, 2021546.474) </font><br>
<font size="1"><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"><MDI
key="NEATLINE">POLYGON ((672676.488065659650601
2019417.955749646294862,672636.091432046378031
2024030.267778463661671,667347.405745737953112
2023983.612156898481771,667385.539170471020043
2019370.524140953086317,672676.488065659650601
2019417.955749646294862,672676.488065659650601
2019417.955749646294862,672676.488065659650601
2019417.955749646294862,672676.488065659650601
2019417.955749646294862))</MDI></span></font><br>
<br>
I realize the coordinate above need to be converted to lat/long to
be a KML ground overlay onto Google Maps, which I think I can
handle.<br>
<br>
But I am unsure if I need to extract the map image from the jpeg
using the NEATLINE?<br>
How are the Corner Coordinates translated into a bounding box?<br>
<br>
Any suggestions? <br>
<pre wrap="">
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