Re: [Talk-ca] using image recognition to create building foot prints.

Ok, just I had to re-write more than just that one section to make it coherent.   Hopefully the page has a bit more logical structure now. https://wiki.openstreetmap.org/wiki/WikiProject_Canada/Building_Canada_2020 Comments and edits welcome! On 2018-01-29 09:26 PM, Matthew Darwin wrote: I

Re: [Talk-ca] using image recognition to create building foot prints.

I will re-write the "project management" section of the wiki page to align with this discussion. On 2018-01-29 09:17 PM, john whelan wrote: and I think I agree with Pierre the best approach would be to do it a step at a time using experienced local resources. We do need to engage with high

Re: [Talk-ca] using image recognition to create building foot prints.

and I think I agree with Pierre the best approach would be to do it a step at a time using experienced local resources. We do need to engage with high schools and the Universities but it is difficult with the resources available. There is some material available

Re: [Talk-ca] using image recognition to create building foot prints.

+1 Unless someone has lots of $$$ to throw at OSM work (which could then fund full time coordinators, trainers, lawyers, etc), the only way I see to coordinate is to approach it like how OSM in Canada was build up to now... distributed model with local groups doing what makes sense for their

Re: [Talk-ca] using image recognition to create building foot prints.

Effectivement, on en revient aux discussions d'il y a quelques mois. Nous avons indiqué dès le départ que ce projet était très ambitieux et qu'il y avait des risques importants sur la qualité de la données si on s'appuyait principalement sur des groupes inexpérimentés via les universités, etc.

Re: [Talk-ca] using image recognition to create building foot prints.

​The idea behind the building project is good. Basically you need a mixture of accurate building outlines and tags. From there the statisticians can work their magic. This is true in Canada as well as other parts of the world. With OSM buildings and tags combined with open source stats

Re: [Talk-ca] using image recognition to create building foot prints.

On Jan 29, 2018, at 2:35 PM, Stewart C. Russell wrote: > On 2018-01-29 04:37 PM, OSM Volunteer stevea wrote: >> >> OSM is delighted to receive building data in Canada, truly we are. >> (Provided they are high-quality data). I have heard the process of >> entering data into

Re: [Talk-ca] using image recognition to create building foot prints.

On 2018-01-29 04:37 PM, OSM Volunteer stevea wrote: > > OSM is delighted to receive building data in Canada, truly we are. > (Provided they are high-quality data). I have heard the process of > entering data into OSM, especially "bulk import" OD (which must match > license compatibility against

Re: [Talk-ca] using image recognition to create building foot prints.

Précision,   Les missions aériennes permettent de produire des images de grande qualité.  On y associe des équipements LIDAR qui émettent un signal vers le sol pour mesurer la distance. Aussi bien la technique LIDAR que de petits drones sont aujourd'hui capables de produire des modèles

Re: [Talk-ca] using image recognition to create building foot prints.

Um, "dyed-in-the-wool." Steve ___ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca

Re: [Talk-ca] using image recognition to create building foot prints.

On Jan 29, 2018, at 12:15 PM, john whelan wrote: > ·NRCan is working on a methodology to extract building footprints, > including topographic elevation and height attributes, from LiDAR > Traditionally OSM has not been happy with this sort of thing. The accuracy

Re: [Talk-ca] using image recognition to create building foot prints.

I think my concern at the moment is how to handle these in an acceptable manner to OSM. It would seem Stewart has some confidence in the data and I suspect you have yourself. So given a benediction by the mailing list to go ahead we would need to go through the import process. My gut feel would

Re: [Talk-ca] using image recognition to create building foot prints.

Bonjour John Les spécialistes d'imagerie produisent des couches de données assez précises à partir d'imagerie LIDAR ou de drones, incluant, immeubles, cours d'eau et occupation du sol. Ces images offrent qualité et précision. Des techniques de classification, interprétation, correction

Re: [Talk-ca] using image recognition to create building foot prints.

On 2018-01-29 03:15 PM, john whelan wrote: > ·*NRCan is working on a methodology to extract building > footprints, including topographic elevation and height attributes, > from LiDAR > > * Traditionally OSM has not been happy with this sort of thing. > The accuracy can be poor. If you

Re: [Talk-ca] using image recognition to create building foot prints.

Can't speak for the rest of the country as such, but I do know that the imagery quality in Newfoundland is rather poor. Recognizing building shapes would technically work, but the result would be poorly aligned boxes, not accurate house shapes. We also do not have a local working group as far as I

[Talk-ca] using image recognition to create building foot prints.

· *NRCan is working on a methodology to extract building footprints, including topographic elevation and height attributes, from LiDAR* *Traditionally OSM has not been happy with this sort of thing. The accuracy can be poor.* *We probably need to think about this since the BC2020i project