[OSM-talk] An example photo/video mapping trip

[Nikhil Upadhye]

Hello Peter,

Thanks for your inputs.
I have considered the possibility of false detection by image
processing. Whatever detected by Image processing will be put on user
interface of the plugin so that user can quickly access it. Interface
will be designed in such a way that only after approval by user tags
will be inserted into map. In order to make detection robust and
accurate image processing will be done by direct object detection as
well as comparing give image with previously known image of the
sign/feature which will already be there in plugin.
All detected features will be tentatively displayed on map for user to
analyze them and will be inserted into final map only after user's
permission.

--
Nikhil



On Tue, Apr 10, 2012 at 8:16 PM, Peter Wendorff
<wendorff at uni-paderborn.de> wrote:
> Hi Nikhil.
>
> Sounds great, but please be careful at the user interface design. Changes to
> the map IMHO should be proposed by the plugin, but not applied without
> dedicated decision of the user.
> There may (and I fear, will) be too much errors even if your image
> recognition is good to add street signs automatically.
>
> Examples (but not limited):
> - a street sign may belong to a nearby parallel street, which is not
> detected by the software accordingly
> - there may be "fake" street signs, built up by residents to calm down the
> traffic. In some areas these are common and not directly illegal, as long as
> they are different enough to the official ones (while recognition software
> may fail, e.g. bigger shields with additional stuff around the "official"
> sign)
> - shields may be wrongly oriented by accident/vandalism at intersections,
> and therefore automatic assignments would fail, while the user can detect
> that by applying common traffic rules.
>
> I'm sure there are additional issues that may occur due to non-perfect (even
> if good) recognition or wrong signed real world situations.
> Therefore my suggestion to design the plugin more like a wizard that uses
> the auto recognition to provide hints to the user, who then can apply that
> e.g. by a simple button press.
>
> regards
> Peter
>
> Am 10.04.2012 15:51, schrieb Nikhil Upadhye:
>
>> Thanks Paul for sharing files!
>> I have submitted proposal for JSOM plugin development to extract
>> information from such images and videos under GSoC this year.
>> This plugin will use image processing to extract the key features such
>> as road signs, max speed, bus stop etc as you have indicated in some
>> images. These extracted features from images/videos will be
>> automatically added to map with respective tags after synchronizing
>> with gps tracks.
>>
>> I would request if anyone has such images/videos along with gpx file
>> to share here as these will be helpful while developing the plugin.
>>
>> --
>> Nikhil Upadhye
>>
>>
>>
>> On Tue, Apr 10, 2012 at 7:11 AM, Paul Norman<penorman at mac.com>  wrote:
>>>
>>> A few GSoC students have made proposals relating to video and photo
>>> mapping.
>>> As I make good use of photos from my car for mapping I thought I'd
>>> prepare a
>>> set of annotate photos, pointing out objects that I map.
>>>
>>> I've finished these and placed them at
>>>
>>> http://pnorman.dev.openstreetmap.org/photomapping/example_photomap_highway.z
>>> ip
>>> The zip file includes the images, the GPX track and some notes. The image
>>> files have coloured rectangles indicating different objects with the key
>>> in
>>> the notes.
>>>
>>> The trip is a mix of residential, industrial and highway travel. Most of
>>> the
>>> time spent entering the data from this trip would normally be typing out
>>> the
>>> tagging for POIs and shops.
>>>
>>> My typical trip involves much less highway travel and much more travel
>>> through retail and commercial landuse where I can spend a couple minutes
>>> with one picture adding all the shops.
>>>
>>> The photos were taken 10 seconds apart from a camera mounted in about the
>>> middle-right of my car and my GPX track comes from my garmin.
>>>
>>>
>>> _______________________________________________
>>> talk mailing list
>>> talk at openstreetmap.org
>>> http://lists.openstreetmap.org/listinfo/talk
>>
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>
>
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