Hi colleagues,
let me start with Hartman first, since I have done the same calculation before.
If you use the landmark coordinates for the TMC frame, the outer area will be cut away.
To avoid this we have to calculate the extension of your whole image (and we still have to find out the 'real' resolution').
Measure a distance along a horizontal line between 2 landmarks and note both coordinates as well.
Do the same along a vertical line between 2 landmarks.
Find the position in your image and note the pixel counts.
Now we can calculate the x resolution per pixel and the y resolution per pixel.
In many cases they are not equal. But with these values we can estimate the coordinate for any pixel position.
This is not 100 percent, but enough for a first shot.
Phil,
these are already very detailed questions of an expert, I will try to answer them.
If you have an aerial image of high resolution, you will run the full level set of levels in your configuration TMC.
Example: Your image is FSET 0, resolution 0.5m, please edit the configuration TMC from level 9 to 14.
Geoconvert will create your scenery area in different LODs.
So aerofly decides, which level it will display (probably as a pure function of altitude, but I do not know this exactly).
Other example: I downloaded low res images FSET 4, 4minutes/Pixel resolution.
I only ran geoconvert for level 9 and 11. It doesn't make sense, to create a higher LOD without having a better image.
So the maximum display quality in all altitudes is level 11.
Btw, I was impressed by these low res images in aerofly. They look so much better than the default and you can cover large areas, e.g. entire Iceland!
Small high res image in larger low res area:
If you want to add an airport with higher quality imagery, save an image with FSET 0, resolution 0.5m.
You may convert it for all levels, so it replaces the existing image tiles just in this area.
Something more for you expert:
Having high res images downloaded you can do a fast conversion for level 9, 11. See the result immediately in aerofly.
You can geoconvert the same image later again specifying only the higher levels 12-14 and add these tiles.
If you plan to add adjacent areas, please specify your TMC frame with straight coordinates as I have shown above with the yellow frame.
I do this now even for full degrees, this makes it so easy to attach the neighboring area.
So many possibilities, it's fun to experiment with.
Rodeo