Aerial Mapping : GeoTIFF to DWG (Import TIFF to AutoCAD)

[Anonymous]

I have a georeferenced aerial map as a .TIFF image. I want to convert in to a .DWG file, without loosing the georeferenced data of it, so that it can be directly accessed on platforms like AutoCAD or DWG Viewer.

How can I import the .TIFF file of the map on AutoCAD CIvil 3D 2018 and what are the necessary settings to be maintained, so as to keep the properties of the map intact?

How to Save it as .DWG file making it directly accessible for the next person using it?

Please answer this considering me as an absolute noobie to AutoCAD.

THANK YOU

[Neilw_05]

Plain Autocad has no ability to understand the meaning of coordinates. If your image has an origin at 0,0 and is 1,000 units x and 1,0000 units y, that is how it will insert into a drawing, regardless of what the units represent. Only vertical applications that support geodetic referencing such as Map or Civil 3D can position an image in a true position relative to the earth. To do so those vertical applications are designed to read correlation data associated with the image files. The correlation data tells the application what coordinates, scale and rotation parameters to apply to the image to make it fit the globe. The correlation data may be embedded in the image attributes or saved in an external correlation file that is read by the software.

Unless you have a vertical product that is capable of reading the correlation data, you are left with manually applying the parameters yourself. This of course requires a thorough understanding of geodyssey.

[Jeew-m]

Dear Friend,

Hope this helps you. 

https://envisioncad.com/tips/autocad-civil-3d-tip-properly-position-geotiff-images/

Thanks

[Neilw_05]

Also, be aware that Autocad does not convert an image when you insert it into a drawing. The image is just a reference to the source file. If the source file is renamed, moved or deleted, Autocad will not be able to display it. Think of it as an XREF. So you do not have to worry about changing the properties of an image when you insert and manipulate it in Autocad. You can move, rotate and scale the image without altering it's properties in the image source file.

[Anonymous]

I went through this article but I'm not able to get those settings. Can you help out as am using 2018 version?

[Anonymous]

I'm using CIVIL 3D 2018 . Please help me out with how to use it for this purpose.

[Anonymous]

Is there any other may to convert a GeoTIFF directly to DWG file ?

[Jeew-m]

Please follow this.

[Anonymous]

I've gone through this video too but I'm not able to get the same interface.

[Jeew-m]

According to the image you are using Autocad 2018. But you asked how to do it on Civil 3D. The video also uses Civil 3D. Not Autocad.

[Anonymous]

Having trouble inserting a large GeoTIFF into a DWG; any pointers?

Thanks!

[Pointdump]

Ocean,

Can you expand a little on "having trouble"? Maybe tell us your version/year of C3D, and either post the Tiff or a link to it.

Dave

[lim.wendy · Accepted solution]

Hello, community!

This seemed to be a very popular topic. Although this post should technically be in the AutoCAD board 🙂 , given you can easily achieve this using Civil 3D. 

Here's a very good old video posted on YouTube for those who want to do it in plain AutoCAD, provided you have the associated world file (jgw, tfw, etc). Enjoy!

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