[HOT] Getting the Bounding Boxes of the Validated Regions

Joseph Reeves iknowjoseph at gmail.com
Tue Nov 20 15:04:39 UTC 2018


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

This task 2212 appears in the project geojson, and marked as validated:
https://tasks.hotosm.org/api/v1/project/5182/tasks?as_file=true

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> 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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> HOT at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
>
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