Re: [HOT] Building Detection using Machine Learning

On Thu, Jan 5, 2017 at 8:43 PM, Stefan Keller wrote: >But even if would be 99.8 percent it's important for OSM > that a human integrates the data into the database. Just for the record, I agree with this totally. I only see a scenario where any automatically identified

Re: [HOT] Building Detection using Machine Learning

Hi Philip On Mon, Dec 19, 2016 at 3:17 PM, Philip Hunt wrote: > I attended my first Humanitarian OpenStreetMap Team (HOT) mapping event a few > months ago > and was interested to see how successful machine learning would be at > detecting buildings in > satellite images.

Re: [HOT] Building Detection using Machine Learning

I agree with Rory with the rotated buildings. However, these building outlines would be great to detect missing buildings within an area. It's usually very hard to find "missing" buildings when your HOT Tasking Manager is at 100% completed. This workflow/tool can definitely be used in the

Re: [HOT] Building Detection using Machine Learning

You've noticed how your algoritm isn't able to get properly rotated buildings. And this might be an advantage! All buildings being non-rotated is *obviously* incorrect, so people aren't gonna want to import them, they'll realise that they have to have a human to review/correct it. Perhaps you

Re: [HOT] Building Detection using Machine Learning

Currently my thoughts run along the lines of use it to identify areas with buildings. Same as Mapswipe?, heavens things get outdated so quickly these days and Mapswipe hasn't been around for that long. Secondly if you map them but tag them with something like possiblebuilding=yes then they

Re: [HOT] Building Detection using Machine Learning

Hi Phillip, I think Andrew, John, etc. have well covered the practical relevance to OSM. On a technical note you may consider looking into what the Facebook data team is doing: https://code.facebook.com/posts/1676452492623525/connecting-the-world-with-better-maps/ I believe a lot of it is based

Re: [HOT] Building Detection using Machine Learning

I agree with what the others have said so far... this probably won't be used to feed into the main database but could have other uses. One place where it could be good is in very sparsely populated areas like northern Africa, where there are huge areas of empty space with a few isolated

Re: [HOT] Building Detection using Machine Learning

Hi Philip, I think this looks really promising. I have seen a fair amount of machine learning and automated feature extraction results from a number of different sources, and your examples look as accurate as anything I have seen. AI/Machine Learning/Automated Feature Extraction are really

Re: [HOT] Building Detection using Machine Learning

My personal reaction is OpenStreetMap which is the data base behind HOT is not very open to machine scanning. The reason being they've seen some fairly poor results in the past. If you can set up some sort of workflow where the images are manually verified that might be more acceptable but its

[HOT] Building Detection using Machine Learning

Hi all, I attended my first Humanitarian OpenStreetMap Team (HOT) mapping event a few months ago and was interested to see how successful machine learning would be at detecting buildings in satellite images. The results look promising but I wanted to know if it could be useful to the community