[GRASS-user] import GeoPDF into GRASS: projection and boundaries of GeoPDF file?

GRASS GRASS user
,
1

Hi,

I would like to ask for suggestions on extraction of image projection
and boundaries from GeoPDF files.

In particular, I have a high-resolution areal photo saved as a GeoPDF
file that I would like to import as a raster image into GRASS. At this
time, GDAL does not support conversion of GeoPDF files to other
geo-referenced raster formats and the following steps may be necessary
to import the areal photo into GRASS:

- convert GeoPDF to .jpg
- import .jpg file into GRASS with r.in.gdal
- specify image projection and boundaries with r.region

The image boundaries could be read from the screen in Acrobat Reader
with GeoPDF plug-in. However, I am not sure how to extract the
projection information.

Is anybody aware of tools to find image projection and boundaries
specifications from a GeoPDF file?

Regards,
Boris.

2

Boris wrote:

I would like to ask for suggestions on extraction of image
projection and boundaries from GeoPDF files.

In particular, I have a high-resolution areal photo saved
as a GeoPDF file that I would like to import as a raster
image into GRASS. At this time, GDAL does not support
conversion of GeoPDF files to other geo-referenced raster
formats and the following steps may be necessary
to import the areal photo into GRASS:

- convert GeoPDF to .jpg
- import .jpg file into GRASS with r.in.gdal
- specify image projection and boundaries with r.region

Does GDAL support it even minimally?
ie does `gdalinfo` give the image bounds?

Hamish

3

Unfortunately GDAL does not recognize GeoPDF format:

gdalinfo in-geo.pdf

yields

ERROR 4: `in-geo.pdf` not recognized as a supported file format.

followed by a print-out of backtrace information.

Regards,
Boris.

-----Original Message-----
From: Hamish [mailto:hamish_b@yahoo.com]
Sent: Friday, 16, October, 2009 21:07 PM
To: grass-user@lists.osgeo.org; Vasiliev B@CEFCOM HQ@Ottawa-Hull
Subject: Re: [GRASS-user] import GeoPDF into GRASS: projection and boundaries of GeoPDF file?

Boris wrote:

I would like to ask for suggestions on extraction of image projection
and boundaries from GeoPDF files.

In particular, I have a high-resolution areal photo saved as a GeoPDF
file that I would like to import as a raster image into GRASS. At
this time, GDAL does not support conversion of GeoPDF files to other
geo-referenced raster formats and the following steps may be necessary
to import the areal photo into GRASS:

- convert GeoPDF to .jpg
- import .jpg file into GRASS with r.in.gdal
- specify image projection and boundaries with r.region

Does GDAL support it even minimally?
ie does `gdalinfo` give the image bounds?

Hamish