Convert TIFF Image into Map KAP

[dacust]

Originally Posted by oem

I'm sorry I haven't seen this utility before now. I'll continue when I get some spare time again :-)

But I wonder if gdal_translate would be able to do the same, that is transform from Gtiff/tiff to KAP with some GCP's as parameters.

See GDAL: gdal_translate and the -gcp option.

I have not yet tested the -gcp option of gdal_translate.

When I get some spare time again :-)

However, gdal does not support writing BSB, it will only read it.

-->GDAL Raster Formats

Not saying gdal_translate may not be useful for this, just that it won't be a one step process.

I think we will need something like:

• gdal_list to a file
• Something like mc2bsbh to read the file and create the .hdr file (this would be new code)
• tif2bsb to create the file

That is, if geotiffs are always palette style tiffs. If not, there would be a couple of ImageMagick "convert"s in there.

Good news: It should be able to be coded to be totally automatic.
Bad news: GeoTiff is very, very flexible. I forsee the distinct possibility of constantly running into a different flavor of GeoTiff that would require tweaking the code.

-dan

[MagnusS]

Trying to be a bit philosofical here:

SW is developing all the time. In most cases it is the data produced and used by the SW that is the really valuable thing. A new SW that can not use the existing data is somewhat lost. OpenCPN seems certainly on its way, but not quite yet.

Remember how Bill Gates killed Word Perfect and Lotus 123? Do you think he would have managed that if all existing users of WP and 123 would have had to hand-convert all their historic files?

/Magnus

[oem]

Originally Posted by dacust

However, gdal does not support writing BSB, it will only read it.

-->GDAL Raster Formats

-dan

Just one quick correction with gdal_translate:

When one line of code in 'bsbdataset.cpp' is uncommented, then gdal supports the creation of BSB-files. For copyright reasons that line was commented out, to avoid any risc of breaking Maptech copyright rules, that's all explained in 'bsbdataset.cpp' in a letter to Frank Warnerdam from thr guy who finally succeded in 'decoding' the BSB-format.

I changed the line in VC2008 express, compiled, and it works perfectly. I posted a number of entries in this forum on my attempts for converting Gtiffs to BSB and it's so close, so close. The problem is my lack of understanding on projections and datums, therefore I don't create the right BSB-header information. Unfortunately I'm busy with other things right now, but I'll come back asap :-) My next attempt will be gdal_translate with some GCP's specified and some more QGis 1.6.0 georeferencing.

Thanks for your ideas and comments :-)

[oem]

Sorry the mail is in 'BSB_read.c'. It's from Mike Higgins to Frank Warnerdam.

and here is the uncommented line from bsbdataset.cpp:
//Disabled as people may worry about the BSB patent
#define BSB_CREATE

[dacust]

Originally Posted by oem

Just one quick correction with gdal_translate:

When one line of code in 'bsbdataset.cpp' is uncommented, then gdal supports the creation of BSB-files. For copyright reasons that line was commented out, to avoid any risc of breaking Maptech copyright rules, that's all explained in 'bsbdataset.cpp' in a letter to Frank Warnerdam from thr guy who finally succeded in 'decoding' the BSB-format.

I changed the line in VC2008 express, compiled, and it works perfectly. I posted a number of entries in this forum on my attempts for converting Gtiffs to BSB and it's so close, so close. The problem is my lack of understanding on projections and datums, therefore I don't create the right BSB-header information. Unfortunately I'm busy with other things right now, but I'll come back asap :-) My next attempt will be gdal_translate with some GCP's specified and some more QGis 1.6.0 georeferencing.

Thanks for your ideas and comments :-)

Awesome.

Sad thing is, now that you've said it, I seem to remember hearing that before, a long time ago.

Thanks for the correction.

That means, of course, creating a release of gdal_translate for our BSB creations. Better yet, would be to extract the code we need. But we are quickly getting beyond my abilities.

-dan

[oem]

Originally Posted by dacust

Awesome.

Sad thing is, now that you've said it, I seem to remember hearing that before, a long time ago.

Thanks for the correction.

That means, of course, creating a release of gdal_translate for our BSB creations. Better yet, would be to extract the code we need. But we are quickly getting beyond my abilities.

-dan

Yes, - I originally got it here, from manimaul:
http://www.cruisersforum.com/forums/...tml#post322600


We're beyond my abilities too. But I can do lots of google, a little coding, and a lot of test. And I have som charts in GTiff.. So I must try to find a solution. Maybe extend my abilities :-)

[Erik Holewijn]

Creating KAP from Mapcal....

Hallo all,
(my first post on this forum...)

Just had some time available and was looking for a convenient way to create KAP files from mapcal calibrated charts.
So i wrote a small utility using Nconvert, Mc2bsbh and tif2bsb, with a graphical interface. Written in VB6 (yes good old times....)
It's a first attempt, tested on XP. Could someone else have a look at it as i am not able to test it on another PC. After starting the application, just browse to the folder where chartcal.dir is located and browse to an outputfolder. The rest is easy and hopefully working. Put this exe and the forementioned tools in one folder and doubleclick Helpcal.exe. That should do it. It may be neccessary to instal the VB6 runtime environment, can be downloaded at Download the Visual Basic 6 Runtime library (vb6 dll)
(rename the attached file to HelpCal.exe)
Good Luck!!
Comments welcome!

[HappySeagull]

Originally Posted by Erik Holewijn

Creating KAP from Mapcal....

Hallo all,
(my first post on this forum...)

Just had some time available and was looking for a convenient way to create KAP files from mapcal calibrated charts.
So i wrote a small utility using Nconvert, Mc2bsbh and tif2bsb, with a graphical interface. Written in VB6 (yes good old times....)
It's a first attempt, tested on XP. Could someone else have a look at it as i am not able to test it on another PC. After starting the application, just browse to the folder where chartcal.dir is located and browse to an outputfolder. The rest is easy and hopefully working. Put this exe and the forementioned tools in one folder and doubleclick Helpcal.exe. That should do it. It may be neccessary to instal the VB6 runtime environment, can be downloaded at Download the Visual Basic 6 Runtime library (vb6 dll)
(rename the attached file to HelpCal.exe)
Good Luck!!
Comments welcome!

Hi Erik!
Nice to have a GUI!
nogo for me on XP yet..I have VB6 and I think I've done everything per mc2bsbh,nconvert in the helpcal folder.Nconvert seem to go ok but I get this message...mc2bsbh not ok
and "Trying to start Mc2bsbh..
Could not open file SYSTEM\helpcal.dir"

but Helpcal DID write a "helpcal.dir"..well,I'll try some more things..

[HappySeagull]

here's the log:

8/12/2011 7:33:46 AM program start
8/12/2011 7:46:22 AM program start
8/12/2011 7:46:38 AM nconvert.exe -out tiff -colors 64 -o helpcal.tif "d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\29122.BMP">helpcal.txt
8/12/2011 7:46:45 AM mc2bsbh -s 29122 -o helpcal.hdr d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\helpcal.dir>helpcal.txt
8/12/2011 7:47:00 AM mc2bsbh not OK!!
8/12/2011 7:47:24 AM program start
8/12/2011 7:47:32 AM nconvert.exe -out tiff -colors 64 -o helpcal.tif "d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\29122.BMP">helpcal.txt
8/12/2011 7:47:39 AM mc2bsbh -s 29122 -o helpcal.hdr d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\helpcal.dir>helpcal.txt
8/12/2011 7:49:38 AM mc2bsbh not OK!!
8/12/2011 7:59:29 AM program start
8/12/2011 7:59:36 AM nconvert.exe -out tiff -colors 64 -o helpcal.tif "d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\29122.BMP">helpcal.txt
8/12/2011 7:59:42 AM mc2bsbh -s 29122 -o helpcal.hdr d:\KEEPERS\Navigation\BSBconversion\MAPCAL+MCBSBH SYSTEM\helpcal.dir>helpcal.txt
8/12/2011 7:59:59 AM mc2bsbh not OK!!

[HappySeagull]

PS..I had borders on that first one so tried again without(Unless I do it,MapCal then creates borders at image edges,I know...) but still nogo.something simple like that wrong,I bet.I also tried putting mc2bsbh in ONE of my system folders but I will pop it into system32 and see.

[HappySeagull]

IT WORKS!
guess what it was...the NAME of my workfolder..."MAPCAL+BSBH SYSTEM\"
the space threw it off! a bad habit,that..spaces.
DOS_LIVES!

Borders ok,too!Nice work,Erik!

[Erik Holewijn]

Wonderful! That's why i stated in the Help: The tools are not supporting blanks in names... Same for foldernames (isn't it logical???
For this bl....... reasons i had to work with a copy of chartcal.dir and replace every blank by an "x".
If there are no blanks or special characters in the filename or folder it should be ok.
If you have any enhancements, please tell me.

Best regards, Erik (on my boat at this moment)

[Erik Holewijn]

By the way, Happy Seagull, did you notice the option of batch-processing all the maps in Chartcal.dir? On my system it works fine (take care of the spaces!)

[HappySeagull]

Hi Erik!help?help?Only thing I had was your first post.
As to spaces,hey,I'm just a windozing user,eh ...offer me a gui and I want intuitive..just clickn-clickn-clickn' at it.. ... some of my folder names and file names just happen to have spaces.. logicalisnotwhatI'dcallitratheradisciplinesuitedto amachine
Haven't given the batch a goodrunyetbutitworkswithtwook.

[Erik Holewijn]

Hi HappySeagull,

with "help" i mean the help button on the GUI...
Same with me, R.T.F.M., but i never do it...