[FFmpeg-user] Seeking for filter to recognize and thicken thin curves

[Paul B Mahol]

On 5/11/13, Andrey Utkin <andrey.krieger.utkin at gmail.com> wrote:
> I am not keen on such thing as objects recognition on image. I'd like
> to know if there is filter available in libavfilter, or in the libs
> pluggable to it, or even another graphical package, to do what i ask
> for: to thicken exactly thin curved lines (if it helps, let's say
> there's a limit of its width), these lines of interest all have
> certain color.
> The application is processing terrain satellite photos, to make small
> roads and trails more noticeable.

Like edge detect?