Ground Imagrey Clipping

[ddelloch]

Hi All,

Hoping I am missing something easy or someone else has run into this.

I have been given a .ECW to go along with a lidar survey. The provider flys his grids but only gives us the images in the specified areas. This means when we get the ECW, the areas outside of our specified fly zone are unprocessed and white.

Of course this means when I bring it into my models, the white area is draped over the terrain as well. Is there a way to apply some kind of clipping boundary to a ground imagery area other than by model extents so that I can get the bing imagery in that area to show through?

Screen shot attached incase what I am asking doesn't make sense.

Thanks in advance.

[Anonymous]

I have been having the same issue, the way around it that has worked for me in the past is editing the extents of the lidar data through Civil 3D. Having two terrian surfaces one with aerial fly over imagery and the other with locality imagery.

Steve

[ddelloch]

Thanks for the response. Is there a way to target two terrain models in infraworks? The lidar survey data itself is right. The extents of the image covers the extents of the survey, the white overlap has no topo data underneath of it.

[daniel.bruce]

I have never used .ECW but if it is in infraworks as a raster there is a colour mask option which allows you to pick a colour that will become transparent, ie set it to white and all white areas will be transparent.

-In the 'data sources window' right click your ground imagery and 'configure'

-chose the second tab 'raster'

-set colour mask to #ffffff

-close and refresh

note infraworks uses hexidecimal colours

#ffffff = white

#000000 = black

#ff0000 = red etc

[daniel.bruce]

screen shot to explain...