[HOT] Getting the Bounding Boxes of the Validated Regions
Michael Heißmeier
michael63 at digital-filestore.de
Tue Nov 20 16:51:42 UTC 2018
Hi Serkan,
just to let you know: Task squares do not have to be squares, they can have
arbitrary polygon boundaries. You will find examples for these in nearly every
project.
Best Regards
Michael
Serkan Karakulak, 20.11.18 17:32:
> Thanks a lot, the geojson file seems to be more than enough for us really:)
> Thanks you for your help, really appreciate it.
>
> Best,
> Serkan
>
> On Tue, Nov 20, 2018 at 11:28 AM Joseph Reeves <iknowjoseph at gmail.com
> <mailto:iknowjoseph at gmail.com>> wrote:
>
> Hi Serkan,
>
> Glad I could be helpful :)
>
> 5 Coordinates because the feature is a polygon and the final coordinate
> duplicates the first - closing the polygon.
>
> It might be worth looking at the Task Manager github page to see if
> there's any plans to present coordinates via the API. I had a very quick
> look at the documentation and couldn't find anything. Calling the API for
> the above gives me as follows:
>
> $ curl https://tasks.hotosm.org/api/v1/project/5182/task/2212
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__tasks.hotosm.org_api_v1_project_5182_task_2212&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=9jC6quPZN0RnI866qaQhEg&m=KxD6xSr0Z5Y9Lf9BioMyXRhmLd0tq4PSuFaOcgZpEkY&s=bOKM4U3mJ_-2TFcahPukW-Z2-4sTUd9U7LEUDYbkq8s&e=>
> {"taskId": 2212, "projectId": 5182, "taskStatus": "VALIDATED",
> "taskHistory": [{"action": "STATE_CHANGE", "actionText": "VALIDATED",
> "actionDate": "2018-09-27T00:47:25.252277", "actionBy": "Daniel
> Specht"}, {"action": "LOCKED_FOR_VALIDATION", "actionText":
> "00:00:55.310139", "actionDate": "2018-09-27T00:46:29.945085",
> "actionBy": "Daniel Specht"}, {"action": "STATE_CHANGE", "actionText":
> "MAPPED", "actionDate": "2018-09-19T07:12:13.214061", "actionBy":
> "Roger Hoorens"}, {"action": "COMMENT", "actionText": "Nothing
> visible", "actionDate": "2018-09-19T07:12:13.212650", "actionBy":
> "Roger Hoorens"}, {"action": "LOCKED_FOR_MAPPING", "actionText":
> "00:00:53.869298", "actionDate": "2018-09-19T07:11:19.347707",
> "actionBy": "Roger Hoorens"}], "perTaskInstructions": "",
> "isUndoable": false}
>
> I don't know if that would be more useful to you if it contained those
> coordinates.
>
> Cheers, Joseph
>
>
>
> On Tue, 20 Nov 2018 at 16:03, Serkan Karakulak <sk7685 at nyu.edu
> <mailto:sk7685 at nyu.edu>> wrote:
>
> Hi Joseph,
>
> Thanks a lot, this was exactly what we needed indeed!
> Much appreciated, thank you for your help.
>
> Is there a reason that there are five coordinates for the tile btw,
> instead of four?
>
> Best,
>
>
>
> On Tue, Nov 20, 2018 at 10:10 AM Joseph Reeves <iknowjoseph at gmail.com
> <mailto:iknowjoseph at gmail.com>> wrote:
>
> Hi Serkan,
>
> I've not looked into this properly, but a quick look at a project
> on the Task Manager shows I can find a validated square:
>
> https://tasks.hotosm.org/project/5182?task=2212#bottom
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__tasks.hotosm.org_project_5182-3Ftask-3D2212-23bottom&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=9jC6quPZN0RnI866qaQhEg&m=9OlRe6xcyrgpxFqRTDdxQpAT2MxJY1U8BQHF1Eb916Y&s=NIrWuzEqTDWUx8Q-ooCep6LppJk6vUeKNdCqzT4CpM0&e=>
>
> This task 2212 appears in the project geojson, and marked as
> validated:
> https://tasks.hotosm.org/api/v1/project/5182/tasks?as_file=true
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__tasks.hotosm.org_api_v1_project_5182_tasks-3Fas-5Ffile-3Dtrue&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=9jC6quPZN0RnI866qaQhEg&m=9OlRe6xcyrgpxFqRTDdxQpAT2MxJY1U8BQHF1Eb916Y&s=iYZA-4J-uBIDT8C04bnsXvJKvA_NZKlkdkaT88KckfI&e=>
>
> I've not double checked this is what you want, but looks like a
> good place to start:
>
> "type": "MultiPolygon"}, "properties": {"taskId": 2212,
> "taskSplittable": true, "taskStatus": "VALIDATED", "taskX":
> 30348, "taskY": 34875, "taskZoom": 16}, "type": "Feature"},
> {"geometry": {"coordinates": [[[[-13.2934570288688,
> 11.4907909783363], [-13.2879638648073, 11.4907909783363],
> [-13.2879638648073, 11.4961739900467], [-13.2934570288688,
> 11.4961739900467], [-13.2934570288688, 11.4907909783363]]]],
>
> Cheers, Joseph
>
> On Tue, 20 Nov 2018 at 03:47, Serkan Karakulak <sk7685 at nyu.edu
> <mailto:sk7685 at nyu.edu>> wrote:
>
> Hi,
> I am a graduate student in a Data Science program, and I
> wanted to get in touch with you because me and my two other
> friends are interested in working on a machine learning
> project to map areas using their satellite images and produce
> their labels. If we obtain a high accuracy, we thought it
> could be of use to the hotosm and the missingmaps initiatives.
>
> I have first heard about Missing Maps when I came across a
> mapathlon event two years ago in Istanbul. We were in search
> for a class project for one of our courses and I remembered
> about the mapathlon event and we would be very happy if we
> could contribute to the this wonderful initiative. There are
> already some previous successful works on this subject, so we
> are very hopeful that we could come up with an algorithm with
> high accuracy.
>
> In order to develop the model, we need to extract bounding
> boxes of the validated tiles we see at hotosm. Then we will
> extract the satellite images and their labels using the
> label-maker API which is developed by DevSeed. Is there a
> method to extract the coordinates of these validated tiles?
>
> Thank you for your time and help.
>
> Best,
>
> Serkan
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--
/Michael
(osm:michael63)
Chairman of the HOT Training Working Group /
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