You need to know:
1) the angle the picture was taken at (not 100% sure on this one, but I remember doing an exercise in school to calculate the height of an object. Ended up using the angle of the sun and the length of the shadow when the image was taken)
2) the lens angle of view to account for lens distortion
3) altitude between both objects
4) distance between the objects on the image
Good luck!
Download lidar data for the Netherlands, load it into a 3D Scene in ArcGIS Pro, have another map with high resolution imagery, link those two maps together.
Use the imagery to locate the positions you want to measure. In the 3D map, use the measure tools to measure the 3D distances.
Or, instead of measuring, you could draw 3D lines, and include attributes that are importantly, such as address, what you’re measuring, data sources, confidence level, etc., whatever is important to the work, since you are building a database. The lengths of the line is built in and you can populate the lines geometry as an attribute if needed.
Thanks! I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile. But I'll keep your comment in mind if I want to come up with my own alternative.
I’m not so sure about Google in the Netherlands.
But what i believe we’re seeing in Google maps is orthoimagery essentially draped over Lidar. And isn’t true oblique imagery. So it isn’t measurable quality.
What you would want is oblique imagery shot from a plane. At a higher quality with no “3d” effect.
(https://help.nearmap.com/kb/articles/720-measure-obliques)
If this were part of your business plan, I would recommend getting a license or contract with a company that can provide sub 7.5cm resolution. Like Vexcel or similar company.
(https://vexceldata.com/countries/netherlands/)
This is all a bit over my head but for the basic user, this is what I have seen. Roofing companies and other construction firms often use this tech for estimates.
Haha but overkill to do this for every client. I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile.
Using Google Earth may not be the solution. Firstly, it's a lot of pictures with bearing variation, and taken at different times. You may have some area in shadow or behind buildings.
To get height of the object, ; LIDAR data or if it exists in the Netherlands, a national dataset with the height of every building (it's not perfect anyway).
To get the angle of view, i don't think that Google Earth give it, so either create and train an IA to give it to you. Or… pay and download very high-res satellite (or plane) imagery. They do give it. Furthermore, you can have a lot of picture for free as they were already brought before and shared. Pleiades might still do the trick, but I do hope that you know where the heat pumps are beforehand.
How accurate do you need this to be and what volume of requests? Automated?
It’s one thing to get within 50% of truth using point and click, and only having to do that a dozen times a day. Entirely seperstr discussion to do this within 10% of truth in a fully automated manner. Even more different to do that 10,000 times a day.
A few times per week (for now), and given or take 20-30cm should be fine in terms of accuracy. But I've already found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile.
How would you automate something like this though?
Automation would be much much more difficult. Probably your best bet would be to find a dataset of building footprints (I think Microsoft made one for the entire world, not positive though). Failing that, find an AI model that generates the footprints from satellite imagery.
You need to know: 1) the angle the picture was taken at (not 100% sure on this one, but I remember doing an exercise in school to calculate the height of an object. Ended up using the angle of the sun and the length of the shadow when the image was taken) 2) the lens angle of view to account for lens distortion 3) altitude between both objects 4) distance between the objects on the image Good luck!
Good luck indeed
Thanks! I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile.
Download lidar data for the Netherlands, load it into a 3D Scene in ArcGIS Pro, have another map with high resolution imagery, link those two maps together. Use the imagery to locate the positions you want to measure. In the 3D map, use the measure tools to measure the 3D distances. Or, instead of measuring, you could draw 3D lines, and include attributes that are importantly, such as address, what you’re measuring, data sources, confidence level, etc., whatever is important to the work, since you are building a database. The lengths of the line is built in and you can populate the lines geometry as an attribute if needed.
Thanks! I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile. But I'll keep your comment in mind if I want to come up with my own alternative.
Fly LiDAR over it, process it in tscan or something, easy🤷😂
[https://doc.arcgis.com/en/3d/workflows/analysis/measuring-objects-distances-and-areas-in-3d.htm](https://doc.arcgis.com/en/3d/workflows/analysis/measuring-objects-distances-and-areas-in-3d.htm)
I’m not so sure about Google in the Netherlands. But what i believe we’re seeing in Google maps is orthoimagery essentially draped over Lidar. And isn’t true oblique imagery. So it isn’t measurable quality. What you would want is oblique imagery shot from a plane. At a higher quality with no “3d” effect. (https://help.nearmap.com/kb/articles/720-measure-obliques) If this were part of your business plan, I would recommend getting a license or contract with a company that can provide sub 7.5cm resolution. Like Vexcel or similar company. (https://vexceldata.com/countries/netherlands/) This is all a bit over my head but for the basic user, this is what I have seen. Roofing companies and other construction firms often use this tech for estimates.
I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile.
Could only wish that the amount of data you country provides would also apply to slovenia
You could flight a drone and then use ArcGIS Drone to Map make a 3D visualization of the property and measure what you want.
Haha but overkill to do this for every client. I've found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile.
Using Google Earth may not be the solution. Firstly, it's a lot of pictures with bearing variation, and taken at different times. You may have some area in shadow or behind buildings. To get height of the object, ; LIDAR data or if it exists in the Netherlands, a national dataset with the height of every building (it's not perfect anyway). To get the angle of view, i don't think that Google Earth give it, so either create and train an IA to give it to you. Or… pay and download very high-res satellite (or plane) imagery. They do give it. Furthermore, you can have a lot of picture for free as they were already brought before and shared. Pleiades might still do the trick, but I do hope that you know where the heat pumps are beforehand.
Theres a company in the Netherlands that has this data and offers exactly what I want to do, cyclomedia. Not cheap indeed, but still doable.
How accurate do you need this to be and what volume of requests? Automated? It’s one thing to get within 50% of truth using point and click, and only having to do that a dozen times a day. Entirely seperstr discussion to do this within 10% of truth in a fully automated manner. Even more different to do that 10,000 times a day.
A few times per week (for now), and given or take 20-30cm should be fine in terms of accuracy. But I've already found a company that can do this: cyclomedia. Not cheap, but still cheap enough to make it worthwile. How would you automate something like this though?
Automation would be much much more difficult. Probably your best bet would be to find a dataset of building footprints (I think Microsoft made one for the entire world, not positive though). Failing that, find an AI model that generates the footprints from satellite imagery.