Rocksolid Light - comp.programming - Re: Simplifying wiggly paths

Re: Simplifying wiggly paths

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Date: Thu, 20 Apr 2023 04:31:34 -0700 (PDT)
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Subject: Re: Simplifying wiggly paths
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by: Y V A - Thu, 20 Apr 2023 11:31 UTC

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On Tuesday, December 6, 2022 at 12:52:35 PM UTC+2, Malcolm McLean wrote:
> I'm working on a problem where a user enters a degraded, wiggly curve (it's actually created by tracing software from what might have been once a rectangle, for example, but has been physically printed, then scanned, and so on, so that there are plenty of stray pixels picked up by the tracing software).
>
> So basically what I want to do is sample the curve at a fairly low resolution, then re-fit it, to get rid of the noise. However I want to retain the genuine sharp corners. So in the rectangle case, the desired output wouldn't be a mathematical rectangle, but it would be four clean almost straight curves, connected by four corners of almost ninety degreees.
>
> The curve tends to go back on itself. It's like a coastline. It's easy to pick out the real curve from the noise by eye, but harder to do it automatically.

Subject	Author
Simplifying wiggly paths	Y V A

Machines take me by surprise with great frequency. -- Alan Turing

devel / comp.programming / Re: Simplifying wiggly paths