[OSM-dev] [GSoC] Automatic Street-Sign Detection and Reading - was: [GSoC] A GPX photo stamper.

Matt Amos zerebubuth at gmail.com
Sat Apr 4 20:18:05 BST 2009


On Sat, Apr 4, 2009 at 8:00 PM, Stefan de Konink <stefan at konink.de> wrote:
> Matt Amos wrote:
>>
>> On Sat, Apr 4, 2009 at 2:38 PM, Stefan de Konink <stefan at konink.de> wrote:
>>>
>>> Matt Amos wrote:
>>>>>>
>>>>>>   But please keep in mind that SIFT will *not* work for the typical
>>>>>>  streetsign because SIFT looks for features, which are typically not
>>>>>>  present in the 'easy to understand' signs (because they use colours).
>>>>
>>>> wouldn't SIFT (or variants thereof) work really well against a
>>>> database of exemplars, i.e: pictures of existing street signs,
>>>> isolated letters from the font used for street signage?
>>>
>>> http://sift.openstreetphoto.org/templates/C1.png
>>>
>>> This thing is totally 'unsiftable'.
>>
>> wouldn't there usually be something inside the circle?
>
> In Dutch this is the sign: go away we don't want you here on anything.
> Something in there would mean: go away we don't want you here on
> bike/car/van etc.
>
>
> Stefan
>

ah, apparently it means the same thing in the UK[1]. clearly its a
good thing i never passed my driving test ;-)

cheers,

matt

[1] http://www.dft.gov.uk/pgr/roads/tss/trafficsigns.pdf




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