Imgkap - kap File Converter Tool

[dacust]

The Windows executable can be downloaded as a single un-zipped object here:

==> imgkap - Download

It also has the imgkap.c source code.

This site will be updated sometime from a coupla hours to as much as a coupla days after a new version is posted here.

If you want the newest version right away, download the attachments posted in the post above and follow the instructions.

BUT, if you want it to be a little easier, you can download 7-Zip, and yuse the convert.cmd at the link above that will rename, combine and un-zip all at once. Just put the downloaded objects in the same directory as the convert.cmd and double-click the command.

When I get home tonight, I'll modify the page to show the date/time and link to the post of the version that was last downloaded, so it'll be obvious which one it is.

-dan

[MdJ]

Thank you very much Dan

[dacust]

Originally Posted by MdJ

Thank you very much Dan

YOU are the one deserving thanks. All I did was spend a few minutes in notepad putting up a rudimentary web page. You've spent hours developing a tool for others to use.

Thanks!

-dan

[HappySeagull]

M'dJ!
WOW! this works great!
It produces a really nice Google Earth chart from the png very quick-
I didn't have to fool around in irfanview at all!

I used the kml feature and MOBileAtlasCreator...two ways to do this:either open the MOBAC kmz in Google earth,resave it and then it's just

>imgkap nameofit.kml (and that's all!wow!)

or,with the unzipped kml that MOBAC has as "doc.kml"...I found I had to edit the kml from "<href>files/cove_15.jpg</href>" to "<href>cove_15.jpg</href>" .I wish MOBAC didn't do this...

>imgkap doc.kml

wow.
PS thanks for the "-t" option...!that fixes this tiny complaint..http://www.cruisersforum.com/forums/...tml#post641757

[HappySeagull]

MOBAC has just been crippled(March2011)
!The "new" version no longer has Google Earth!just OpenStreetMaps...If you have the old Version hang on to it!

[MdJ]

Originally Posted by HappySeagull

MOBAC has just been crippled(March2011)
!The "new" version no longer has Google Earth!just OpenStreetMaps...If you have the old Version hang on to it!

Hello HeappySeagull,

You can find the previous version on internet, searching for: Atlas Mobile Creator 1.8.zip

When I generate a file with MOBAC 1.8 for Google Earth Overlay (KMZ) (often Linux), unzip KMZ files creates 2 files doc.kml and files/xxxxxx.jpg

> imgkap doc.kml

create files/xxxxxx.kap

M'dJ

[HappySeagull]

Originally Posted by MdJ

Hello HeappySeagull,

You can find the previous version on internet, searching for: Atlas Mobile Creator 1.8.zip

When I generate a file with MOBAC 1.8 for Google Earth Overlay (KMZ) (often Linux), unzip KMZ files creates 2 files doc.kml and files/xxxxxx.jpg

> imgkap doc.kml

create files/xxxxxx.kap

M'dJ

M'dJ,Good!thanks for that link for MOBAC!(Take note those that don't already have this useful tool.Get it now,before it disappears.No need to install...)

as to me saying,
" I found I had to edit the kml from "<href>files/cove_15.jpg</href>" to "<href>cove_15.jpg</href>" ...

I should do as you have it?
quote:

>imgkap doc.kml

[new line?]create files/xxxetc.kap

???

[Surveyor]

THIS NEW VERSION IS HAWT!!!!!

Thank you very very much for sharing!

[MdJ]

Sample image of Liberty Island in New York :

1) unzip with 7-Zip or other software "Liberty New York.kmz"
unzip create 2 files doc.kml and files/xxxxxxx.jpg

2) execute in MS-DOS or shell on Linux, Unix...
> imgkap doc.kml -t "Liberty Island" LibertyIsland.kap

to create kap file

3) execute
> imgkap LibertyIsland.kap LibertyIsland.png

to recover image


See attached files

You can notice that the png file has 128 colors and a different size.

(imgkap uses the coordinates of the kml and recalculates the size of the image to make a good image in the Mercator projection and of course the colors are reduced to 128 maximum.)

M'dJ

[HappySeagull]

AH! M'dJ!Merci...
I found my mistake! When I unzipped the kmz,I didn't include the folder called "files"! I took the image OUT of the folder.a mistake.

[HappySeagull]

I do it a little differently.In MobileAtlasCreator,I name the kmz..this example is called KooryetBay.

KooryetBay.kmz

and when unzipped,it makes the doc.kml and the folder called "files"
but at the cmd line,I do only this:

>imgkap doc.kml

and that's all! and it puts "KooryetBay_14.kap" in that folder named "files" where the unzipped image file from the kmz was. "KooryetBay_14.jpg".

The "_14" was added by MOBAC,being the scale I had chosen.

Oh!This works great,however,M'dJ! It's been a whole day WITHOUT irfanview!hurray!

[HappySeagull]

this is a bit of a reprise from the tiff2kap thread but is very cool and bears repeating?It's fun!

I love that I can do this with IMGKAP...
extract the chart,edit it and rebuild it.I wrote some simple scripts to do it quickly...
imgkap_Extract2Edit.doc
imgkap_AUTO_Rebuild.doc
You can read these in notepad and edit them too.Basically,they're Dacust's! but don't blame him!
to use em,rename them to ".bat",put them with a copy of imgkap in a folder with the chart kap you want to edit.That's easiest.And all you need!
Double click the "extract to edit" script,follow it's directions which is just to type the name of the chart you want to edit (I used M'dJ'sLiberty kap from post above here)and then,two files are extracted,both with "EX" in their name.The headerEX is just a text file,despite the ".kap".You can edit it but not in this example.Fool with it later...
Edit the EX.tif as you please in in an image editor,and then double click "AUTO rebuild" script which will recombine the two files as a kap using the original name adding "EX" to it so it won't get confused or overwrite the original.

using em,I made this from M'dJ's Liberty Island kap while making coffee.
LibertyIslandEX.kap.doc


but it works very well with any chart I've tried....In fact,when OpenCPN wouldn't open a Transverse Mercator,I ripped the chart open,rebuilt it and put it back in less than 30 seconds.In that instance,I edited the header...but that subject is well-covered elsewhere.Seems pretty handy!
Thanks again M'dJ for this very cool tool

[MdJ]

Originally Posted by HappySeagull;666761
Thanks again M'dJ for this very [I

cool[/I] tool

Thank you HeapySeagfull

I have a small sailboat; Etap 22i and I spent one month all summers in France, Spain...

On my boat, I put a small solar panel, I bought a computer EEEPC and downloaded world maps and SHOM (Do not repeat...).

I also wanted the satellite maps and tried libbsb but I found many bugs. I am a computer professional, I worked in the past, in assembler on FAX and others in the laboratory.

So I remade the code and last summer I traveled on the Atlantic coast with these cards and no problems.

Thank you again, I just want you to enjoy what I use for me.

M'dJ

[MdJ]

This question has been addressed in other threads, but it seems useful that I clarify the solutions and results.

Globaly, there are 2 methods to reduce colors.

• The first is to make a frame, for example a gray is represented by a mixture of black and white.
  This method is used eg for printing, printers have just black and 3 or 4 colors.
  
  It works perfectly when the resolution is important, for example with a paper chart, but for zoom camera image this method is not correct.
  
  This method is used by default in ImageMagick or irfanview.

• The second method is to find the colors in the image and reduce the number of colors desired.
  This method gives a loss of information or color accuracy, but it is effective for photos and satellite images.
  
  There are many more or less intelligent algorithm processing, which uses more or less time.
  
  In imgkap, the idea being to combine the color closest in the RGB cube.
  
  This same method is done with ImageMagick option or in irfanview option or by default in Gimp.
  
  The pictures much more advanced treatments may not do the math in RGB space, but in the HSL space or more.
  Because the color is not an RGB, but a light wave, which only a portion is visible to the human eye.
  In these advanced treatments, the reduction is done by taking into account these aspects.
  

Ci-dessous, Sample trame d'imprimerie and RGB cube.

(If necessary Imgkap reduced to 128 colors (not 127), the kap contains 128 colors and is working properly.
I have compared the results of imgkap with Gimp and zoom in IrfanView.)

M'dJ

[HappySeagull]

M'dJ,
I've been doing some comparisons,oldimgkap and NEW imgkap...
Here are some palettes from EXtracted tifs of two charts I made,so these are what the resulting kap looks like.
The first I made the png into a 128 colour tif before making it into a chart.The second is what your new,improved IMGKAP does automatically!


Both are from the same 24bpp,16mill colour "png"....so,I can shut up now about converting,eh?



And in case anyone doesn't know what this is about...
here's what M'dJ has fixed in the conversion processor he started with.It didn't happen all the time...and simple charts were fine.But....

kind of interesting and still navigable
now,of course it'sScotland 10EX.jpg Views: 229 Size: 297.3 KB ID: 26182" style="margin: 2px" />