Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

4. Lipiec 2018 10:16 od j...@liotier.org : > I am concerned about the cases where a building does exist in reality, the > shape is less than ten meters from its position, some of the shape > overlaps the building's position on the imagery and some of the shape >

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On 04.07.2018 17:19, Oleksiy Muzalyev wrote: I tried to find a similar house on the satellite imagery of Northern Germany but for some reason I could not find a single one. Perhaps, they are rare, or blend into vegetation, or do not look like houses from above. From the overview shot at ~1:10

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On 7/4/2018 2:58 PM, Jean-Marc Liotier wrote: On Wed, July 4, 2018 1:47 pm, Oleksiy Muzalyev wrote: Sometimes I myself cannot recognize on a satellite image what kind of building it is, - a warehouse, a cowshed, a factory, etc., or how many levels it has got. I have to look at its shadow,

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Wed, July 4, 2018 1:47 pm, Oleksiy Muzalyev wrote: > Sometimes I myself cannot recognize on a satellite image what kind of > building it is, - a warehouse, a cowshed, a factory, etc., or how many > levels it has got. I have to look at its shadow, surroundings, roof > surface, to make a guess.

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

I do not think that in ten years automated image recognition will be capable to map buildings correctly. I remember that still in 70s I read that computer translation will replace human translators. However, half a century later it is still humans who translate texts, though with the

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

Hi, On 04.07.2018 10:16, Jean-Marc Liotier wrote: > And that does not even answer the question: what to do with the > "low-quality shape but actually exists" cases ? I am at a loss to answer > that. Conflate into a point maybe - by moving the outline's tags onto one of the corner nodes and

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Tue, July 3, 2018 7:20 pm, john whelan wrote: > I think my concern is more about the 'then a miracle occurs' in the > project plan to clean up the buildings. Yes because, among other reasons: - For most people, verifying is not as gratifying as creating - Correcting entirely incorrect

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Tue, July 3, 2018 3:56 pm, mohamet lamine Ndiaye wrote: > I am Mohamet Lamine Ndiaye [..] Nangadef, I'm happy to hear from you - it has been a long time ! > [..] I think this is the umpteenth time we talk about it Yes, this is a pet issue of mine - I hope that one day I'll understand why you

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Tue, July 3, 2018 10:46 am, Rupert Allan wrote: > > [..] 'some data being better than no data' [..] Yes but, in that case, landuse combined with density and/or building type attributes do the job more cheaply and with none of the low quality stigma. But, of course, there may be other reasons

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

Generally, of course, yes, but there was a talk by someone who had estimated the population of a seasonally inhabited village by mapping buildings that are demolished each year. -- Andrew From: Jean-Marc Liotier Sent: 02 July 2018 15:25:38 To: Vao Matua Cc:

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Mon, July 2, 2018 11:55 am, AMEGAYIBO Kokou ELolo wrote: > > The majority of these tasks were created in training workshops on > OpenStreetMap in Bamako, quality control work is done afterwards by the > local community normally. I share your points of view, but for training > workshops it is

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

On Mon, July 2, 2018 2:59 pm, Vao Matua wrote: > When you say "low quality" buildings, do you mean the quality of the > polygon data or are you judging someone's home to be of low value? The tracing of course - mud shacks and posh villas are all equal before Openstreetmap contributors !

Re: [OSM-talk] [HOT] Why the HOT obsession with low quality buildings in Africa ?

When you say "low quality" buildings, do you mean the quality of the polygon data or are you judging someone's home to be of low value? On Mon, Jul 2, 2018 at 1:24 AM, Jean-Marc Liotier wrote: > Active in Senegal and Mali, I have noticed that changesets tagged with > tasking-manager HOT