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

[Peter Wendorff]

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.
>>
>>
>> _______________________________________________
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