Satellite Image on Topography in Revit Tutorial
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- Опубликовано: 11 сен 2024
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I found this VERY useful. In fact, some front-end preparation takes much of the guesswork out of it. Using Photoshop Elements and just a single known dimension, I was able to derive a precise pixels:distance ratio (e.g., pixels per meter). Once you have the image in a reasonably close position , it's a trivial matter to measure the needed adjustments for X, Y and rotation angle. Makes this much less "annoying" and repetitive.
Photoshop process:
1. Screen capture working area at best resolution you can achieve (4K monitor helps a lot).
2. In PS: New Image From Clipboard.
3. In PS, draw marquee as closely as possible containing your two points of field measurement. Best results given by this measurement being at least 50% of overall width or height AND being orthogonal (vertical or horizontal) relative to image.
4. Copy (CTRL-C) and New Image from clipboard again (still in PS and this secondary "reference" image is only used for measurement).
5. Image / Resize / Canvas size ... choose Pixels as units of meas.
6. Reduce the reference image size incrementally until its extents precisely match your measurement points. If you crop too much just UNDO (CTRL-Z) and try again.
7. Image / Resize / Canvas size ... choose Pixels as units of meas. Note the image dimension in the direction of your field measurement.
8. Divide your field measurement by the number of pixels in the precisely cropped reference image. This gives you exactly the number of pixels per meter (or foot). It’s not a problem that it’s a number like 5.42763 pixels per ft. or 17.80805 pixels per meter. Just use a reasonable level of accuracy to figure the X and Y scale "sample sizes." Since it’s unlikely that you have perfectly square image, remember to uncouple the Width/Height. It's important to not distort the vertical and horizontal proportions (aspect ratio).
9. Use this ratio and the image pixel dimensions to determine the X and Y scale factor in your Texture Editor dialog:
Sample Size (Width) : 2145 px / 17.80805 px/m = 120.45m
Sample Size (Height) : 1939 px / 17.80805 px/m = 108.88m
If done correctly, your incremental adjustments should match your adjustment measurements in plan view accurately. My first time attempting this and I had a difficult site dialed in in two or three attempts. The scale was indistinguishable from my imported survey document!
Final note: Another Balkan Architect video was extremely helpful in learning how to rotate views even in a project which wasn’t well-planned from the beginning with regard to Project and True North settings. This allowed me to work orthogonally on an awkward site that's both pie-shaped and rotated to an odd angle.
A full tutorial in a comment. This is a rare type of comment. Respect.
These are some ideas that could help, I think:
To make the image at the right scale, I would import the image into my 2D site view and make it at the right scale. Once the scale is good, I would note the image size and that should be the image scale into the materail asset (I think but maybe I'm wrong). Delete the image from the view.
Once the material is placed on the toposurface and at the right scale, on the satellite image I would draw lines around the house (the one you were working with) and I would also draw the lines where it's suppose to be on the terrain. With these lines, I will be able to know the angle and the X and Y distance to place the satellite image on the toposurface.
I'm sorry for my english, I'm a french person ;-)
Great work! You’re a good teacher. Thanks for sharing. (Josh, BIM Earth)
sclae the img in AutoCAD and import it into revit simple
Thank you Revit Sensei, I am actually busy with a project in need of this feature. The timing 👍🏾👍🏾👍🏾👍🏾
hi balkan, you can actually just use the built-in scale in the image from google that you can turned on (when saving the image) as reference for actual scale instead of approximating certain areas for dimension.
Could you elaborate on this process? And thank you for this.
Hi ! Good stuff!
You mentioned a link to good quality satélite images. Where is that? Cheers
HI! Following the same steps, I could not drape satellite (Google earth) image on toposolid in R-24 version. Can u plz guide
You are the MAN!!!!
My topography turns black in realistic mode instead of showing my satellite image....please help 🙏🏾🙏🏾🙏🏾
Can u make a video on how to make a green roof detail section callout? Just want to know the basics to detailing a green roof😁
i have the problem when adjust rotation the project north,this material image unconstrain to toposurface that i lost editing this map position😀
Interesting, but why not measure the distance from your house on the image to your drawn walls, and then you'll have the offset values.
thank you it really help
greaaattt tutorial! Thanks BA!
Great video, I think that it is better to represent your models in Infraworks.
A question .. how can I restore the site level in case it is deleted, any help?
Very good try and workaround. I have tried this and it is terrible! Haha. It's extremely difficult with certain sites! I hope Revit creates and update for this
hey, just nmeasure in the view the distance x and y and put them in the offsets
Not sure how long ago you did this tutorial, but I tend to use FormIt for the topography now. I think it's been my software of choice for issues like this for a couple of years now.
Very interesting, indeed.
We just do 3D scans as, for our purposes, the nearby topo is just for visual reference.
In Portuguese this is called "gambiarra.
muy bien... buen razonamiento de aplicación
Have you heard of the PlaceMaker addon? It can import topography and apply aerials in a few seconds. Nice tutorial!
Having participated in the Revit Alpha trial, I was about to suggest this!
Nice vid, I've learned a lot from your videos, I'd like to ask you if you could teach us how to make complex forms in revit, like the glass dome in Jewel Shangi Airport from Singapore please
very useful video; just a thought - if you temporarily added a grid pattern to the satellite image, would you then be able to use the grid to move the image more easily?
or put in another detail line so you can measure the north and east dimensions once the rotation has been corrected?
Unfortunately you can't move the material by moving the line pattern on Revit topography, I tried that 🙂
u mentioned a link for good quality satellite images. I think you missed that. Please put that in comments. Ty
I guess if the map was to scale you could move topography over to spot that you want instead of offsetting image
It actually starts at 2:40
اللهم صل وسلم على نبينا محمد وعلى آله وصحبه أجمعين وسلم تسليما كثيرا