PicLayer: Import of raster images (*.map, *.kal, *.geotiff) and calibration information (.wld, .tfw)

[cantece]

Hello, is it possible for PicLayer to import other calibration formats and georeferenced images (like kal, cal, map, geotiff ...)? cantece

[anonymous]

+1

[cantece]

is it possible to make the increments of the editing (size, angle)smaller and more precise?

[anonymous]

It really would be helpful to be able to import several calibration information - e.g. in wld or tfw format (the DOP in Bavaria come with that information).

[hamish_b@…]

i.e. support GDAL+OGR formats (www.gdal.org)

see also #2372

Hamish

[DiverCTH]

+1

[lists@…]

+1 - sitting on a somewhat complex datasource for Brazil using BSB/KAP, have found tools to convert it to .tif (non-Geo) and .png, but redefining the position calibration is a PITA.

[hamish_b@…]

Replying to lists@…:

+1 - sitting on a somewhat complex datasource for Brazil using BSB/KAP, have found tools to convert it to .tif (non-Geo) and .png, but redefining the position calibration is a PITA.

Use "gdalwarp" from gdal.org to make a geotiff from a BSB map. This will convert the embedded ground control points (GCPs) into "real" georeferencing information. it is not mandatory, but for best results try to output to the map projection the chart was made in.

Hamish

ps- if you haven't found it yet, www.OpenCPN.org is absolutely brilliant for viewing those BSB files. do check it out.

[Larry0ua]

if anyone can provide algorithm to convert specified formats to simple affine transformation matrix, it would be best way to close this issue.

by the way, world file is supported in current PicLayer

.map (ozi): #4949

.kml (GoogleEarth): #5451