Image Overlay Plugin for 1.3.3-IMPROVED

[geodan]

Hi all,

I have improved Mashi's image-overlay plugin so that you can load images with world files (i.e. the georeferencing information). For example, when you try to load a JPG, it will look for a JFW file so that it can place the image correctly on the globe. It will do the same for GIF/GFW, PNG/PGW, and TIF/TFW.

All images MUST be in geographic projection (lat/long).

I have only tested it with smallish images, which seem to take a while, and keep in mind that there is no progress bar...so you'll just need to wait for the image to appear.

Sorry, I couldn't include an image sample, because of the file attachment size...

Remember that this and the original plugin save the images in a text file, and when you re-open worldwind, and load the plugin, all of your images are loaded automatically.

UPDATE (November 16/2005):

- IMAGES NOW DRAPE ON THE TERRAIN

UPDATE (November 17/2005):

- Corners re-draw at the correct height, when using vertical exaggeration

UPDATE (April 21/2006):

- The plugin does not seem to work properly with 1.3.4, I'll be looking at this issue soon.

<span style="color:red">FOR THE FUTURE:</span>

- The ability to save new images, after changing the position/size of the image (and write new world files).

- Incorporate Pierrick's code to move corner's independently (to re-shape/resize), Pierrick, can you do this?

- Adding support for .map world files

- Add support for header world file info, ala GEOTIFF

-Progress bar (can anyone help with this?)

Just unzip the attachment and run the exe, to install to your WorldWind directory (accept the default location in most cases).

Dan

[bull]

Cool, now all it needs is a rotate option

[geodan]

Does anyone have any idea how I can drape an image layer on the terrain?..similar to how the WMS images are draped...

thanks,
Dan

[canosso]

Hello geodan,

Originally posted by geodan@Nov 3 2005, 08:34 AM
Does anyone have any idea how I can drape an image layer on the terrain?..similar to how the WMS images are draped...

thanks,
Dan

Quoted post

If the image is geo-referenced, add an layer for the image in @Images.xml by copying a QuadTileSet. Maybe it is possible to call the <TerrainMapped>true</TerrainMapped> option with the plug-in, this should not be easy because the plug-in use only RenderableObjects list but the TerrainMapped option is only option of ImageLayer. Maybe Mashiharu could help.

canosso

Originally posted by geodan@Nov 2 2005, 11:59 AM
Hi all,

I have improved Mashi's image-overlay plugin so that you can load images with world files (i.e. the georeferencing information). For example, when you try to load a JPG, it will look for a JFW file so that it can place the image correctly on the globe. It will do the same for GIF/GFW, PNG/PGW, and TIF/TFW.

All images MUST be in geographic projection (lat/long).

I have only tested it with smallish images, which seem to take a while, and keep in mind that there is no progress bar...so you'll just need to wait for the image to appear.

Sorry, I couldn't include an image sample, because of the file attachment size...

Remember that this and the original plugin save the images in a text file, and when you re-open worldwind, and load the plugin, all of your images are loaded automatically.


FOR THE FUTURE:

-If anyone would like to help, it would be nice to have a progress bar
-and it would be nice to have the images DRAPE on the terrain

Just unzip the attachment and run the exe, to install to your WorldWind directory (accept the default location in most cases).

Dan

Quoted post

Hey Dan

Could you tell me if the .jfw file is like the .sdw file that is used in other apps. Also, I have some color photos that I have from the Pa site listed elsewhere on the forum. I had to convert them from the .sid format and I would like to get them into WW one way or another. I figure if I knew the format I could just hand code a small text doc into the correct file needed.

[geodan]

Originally posted by Killroy@Nov 7 2005, 06:39 PM
Hey Dan

Could you tell me if the .jfw file is like the .sdw file that is used in other apps. Also, I have some color photos that I have from the Pa site listed elsewhere on the forum. I had to convert them from the .sid format and I would like to get them into WW one way or another. I figure if I knew the format I could just hand code a small text doc into the correct file needed.

Quoted post

Hey...here is a sample of a jfw...

0.000434295612453671670
0.0
0.0
-0.000434295612453671670
-91.436634653313519
14.756679134064553


Dan

Originally posted by geodan@Nov 7 2005, 03:36 PM
Hey...here is a sample of a jfw...

0.000434295612453671670
0.0
0.0
-0.000434295612453671670
-91.436634653313519
14.756679134064553
Dan

Quoted post

Hmmmm here is the text of a .sdw file.

1.000000000000000
0.000000000000000
0.000000000000000
-1.000000000000000
1690000.500000000000000
299999.50000000000000

As you can see it's not so different. I looked on the internet of how to interpret a jfw file but I never understood how the numbers fit with coordinates.

[geodan]

Originally posted by Killroy@Nov 7 2005, 09:25 PM
Hmmmm here is the text of a .sdw file.

1.000000000000000
0.000000000000000
0.000000000000000
-1.000000000000000
1690000.500000000000000
299999.50000000000000

As you can see it's not so different. I looked on the internet of how to interpret a jfw file but I never understood how the numbers fit with coordinates.

Quoted post

Well, your numbers suggest that your image has a 1 meter pixel resolution, and the bottom two values are the x,y coordinates for the top-left pixel in the image. As I say in the above posts...all images MUST be in a geographic projection (with a geographic world file), as that is all WorldWind supports.

Of course, if you didn't want to project the images...you could always pull up the map projection formula for whatever projection your images are in...and convert the coordinates into geographic...with some code (as an extension of the plugin).

For the meantime...if you want to get the images into WorldWind, re-project your images into geographic lat/long projection...and make sure they are gif/jpg/png/ or tif....

Dan

Originally posted by geodan@Nov 7 2005, 07:08 PM
Well, your numbers suggest that your image has a 1 meter pixel resolution, and the bottom two values are the x,y coordinates for the top-left pixel in the image. As I say in the above posts...all images MUST be in a geographic projection (with a geographic world file), as that is all WorldWind supports.

Of course, if you didn't want to project the images...you could always pull up the map projection formula for whatever projection your images are in...and convert the coordinates into geographic...with some code (as an extension of the plugin).

For the meantime...if you want to get the images into WorldWind, re-project your images into geographic lat/long projection...and make sure they are gif/jpg/png/ or tif....

Dan

Quoted post

Nice...haven't had a chance to look at the code yet but did they fix the little thingy in the source (see other thread) or did you have another work around?

I noticed that context menus seem to have gone away in 1.3.3.1 (at least mine did) until I put the older 1.3.3 code back into the if test somewhere. I recall that I based my context menu plugin code on Mashi's image overlay ones.

Regards,

Nigel

[geodan]

Originally posted by Guest@Nov 8 2005, 06:06 PM
Nice...haven't had a chance to look at the code yet but did they fix the little thingy in the source (see other thread) or did you have another work around?

I noticed that context menus seem to have gone away in 1.3.3.1 (at least mine did) until I put the older 1.3.3 code back into the if test somewhere. I recall that I based my context menu plugin code on Mashi's image overlay ones.

Regards,

Nigel

Quoted post

I have no idea what you are talking about...