topic Getting my 3d model to line up with a photo ? in Visualization

Getting my 3d model to line up with a photo ?

Anonymous — Thu, 11 May 2023 10:07:40 GMT

I have a photo of an exisiting site.
I also have an archicad model.

I need to orientate my archicad model to the exact same perspective as in the photo, then render it and drop it into photo shop.

whats the best strategy for this ?

thanks guys.
Ian

Re: Getting my 3d model to line up with a photo ?

Anonymous — Fri, 07 Oct 2011 13:06:17 GMT

Hi,

You can use:Document/Creative imaging/Align view

For more info please check the Help

Best regards, Ede

Re: Getting my 3d model to line up with a photo ?

Erwin Edel — Fri, 07 Oct 2011 14:27:02 GMT

So far I've found that 'eyeballing' it and then tweaking the render in photoshop has given the fastest results. Tip: you can set the photo as background image in your 3d window in 3d window settings.

I suppose my method of doing this works well because most of the montages I did were on sites with a fair few buildings around to get a good sense of scale.

Re: Getting my 3d model to line up with a photo ?

Dwight — Fri, 07 Oct 2011 15:14:10 GMT

And in the case of an irregular structure, place a translucent box around it to simplify vanishing point location.

Align View is unreliable for exterior views unless the photo is accurate and possesses measurable reference lines.

Attached is a page from my "Artlantis Attitude" book giving some further hints.

Re: Getting my 3d model to line up with a photo ?

vistasp — Fri, 07 Oct 2011 16:35:31 GMT

These two articles may help you:

http://archicadwiki.com/AlignView

http://blog.graphisoftus.com/graphisoft/align-view

Re: Getting my 3d model to line up with a photo ?

Anonymous — Thu, 13 Oct 2011 07:11:10 GMT

can some one please show me where this is in the menu.
i cant see it in my archicad german version.
thanks.
ian

Document/Creative Imaging/Align View

Re: Getting my 3d model to line up with a photo ?

Anonymous — Thu, 13 Oct 2011 19:40:05 GMT

pixpast wrote:
can some one please show me where this is in the menu.
i cant see it in my archicad german version.
thanks.
ian

Document/Creative Imaging/Align View

This...

Re: Getting my 3d model to line up with a photo ?

Anonymous — Tue, 01 Nov 2011 10:17:30 GMT

yup thanks.
i was able to do it but i found the results really not good.
the general perspective was ok but the correct angle and camera height was tottaly wrong and just took me ages to tweak until it was close.
it only worked becasue i had two monitors, one with the photo and the other with archicad and the camera position.

I dont think this tool is very good.

Thanks.
ian

Re: Getting my 3d model to line up with a photo ?

Sightline — Thu, 03 Nov 2011 13:25:21 GMT

Perhaps this happens because pictures are taken with real cameras with focal length, aperture width and lens distortion. You would need software that emulates physical cameras such as Cinema 4D in order to match the view.

There is a plugin for C4D called Photomatch and even with that, it's not that easy to align views.

Re: Getting my 3d model to line up with a photo ?

Dwight — Thu, 03 Nov 2011 14:14:25 GMT

Photo Match works fine in theory. Just make a rendering of a scene and use it as a background to insert another element. Once free of real world anomalies, the feature is flawless.

Re: Getting my 3d model to line up with a photo ?

Sightline — Thu, 03 Nov 2011 14:20:40 GMT

I have an idea for you. I use a similar method in C4D:

• PhotoRendering Settings. Add the final existing picture you are going to use for the photomontage. Try to use a size that fits your screen.
• 3D Window Settings. Background as in PhotoRendering.
• Move, rotate, pan camera until you get a fair result.

I believe this might help a little more than using two screens.

Cheers!

Diego Torres

Re: Getting my 3d model to line up with a photo ?

Anonymous — Sun, 11 Dec 2011 00:44:16 GMT

one more thing which is often forgotten, it really helps to pinpoint the exact location of where the photo was taken including the RL. If you then place the ArchiCAD Camera in this exact location you are starting of on the right foot and can tweak from there. As all ready mentioned you really would need to know the focal length used in the photo. saying this, it is not a strong point of ArchiCAD and most professionals use additional software / plug ins. Least but not last I have yet to come across a Photomontage which was not adjusted in post production. It's necessary as there is always "stuff 'that needs to be removed, hidden away, added and adjusted.