Image overlay

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Image overlay

Postby monksjm » Wed Feb 18, 2015 3:20 pm

My company recently started using a drone to do aerial surveys. We've just started providing this service and have found it to be really exceptional. We are doing a table at an engineering expo and one idea was to overlay the image over the 3d surface and have kids do the 3d flyover. Can this be done? Is there an overlay capability in the civil suite?

Thanks!
Shaun Morrison
Civil Designer/Drafter
Sevee & Maher Engineers, Inc.
Cumberland, Maine
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Location: Cumberland, Maine

Re: Image overlay

Postby Gibbo » Thu Feb 19, 2015 7:39 am

When you start the 3D flyover function there is an option to use a "3D textured image". You need to create a TIF or SID file for this function and they need to have an associated world file .TFW or (not sure what it is for SID file type) associated with it.

To create the TFW: If you use google to get your image using the Place Google Earth Image function in the Images menu in the GIS Module, it will save the image as a .JPEG file. You'll need to covert this to a .TIF file; to do this you'll need an image converter program (I use AVS software, it's fast and easy) or just open the "Google.JPEG" file in Paint and 'Save As' a "Google.TIF" file. Once you do that, you just go into the GIS Module and select Images/Create World File/Extract from Image, and choose your "Google.TIF" file, then for the location and destination points choose opposite corners of the "Google.JPEG" file you have located in your drawing file already (as the TIF file will be an exact replica of this). Choose the same corner for the Location and Destination for the first point and then the opposite corner for the second Location and Destination point. This will create a .TFW file for you for your .TIF. The other option is to using the function Images/Create World File/Create by Image in drawing, select your insert Google Image file in the drawing created by the Place Google Earth Image command and it will create a .JGW file which is the .TFW equivalent. Then just rename your "Google.JGW" to a "Google.TFW" file.

Hope this is not overly confusing.
Andy Gibson
Brisbane, Australia
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