Re: Octave 4.0.3: normxcorr2 producing unexpected result

[oli]

Thanks Hartmut,

The "expected result" comes from this video taken from the Computer Vision
course on Udacity: https://youtu.be/9hN3MeCavP4?t=79

Any idea what might have produced this result?

> Only the (minor problem) of the border pixels remains, and it is taken
care of in [2].

Great.


On Tue, Mar 28, 2017 at 12:30 PM, Hartmut [via Octave] <
address@hidden> wrote:

> Hey Oli,
>
> the result of Octave's normxcorr2 (when using the previously mentioned
> patch in [1]) is fully Matlab compatible, except for the outer two numbers
> on each side. Where does your "expected result" come from? The values of
> normalized correlation coefficients should stay between -1 and 1.
>
> The remaining issue seems to only concern border pixels, you can follow
> the discussion under [2] if you like.
>
> Regarding the result max that you mentioned: I think this should be only
> due to (inavoidable) numerical inaccuracies. By the way, the Matlab result
> of your max command is the very same as Octave's for your example.
>
> So I can't "feel" a major bug here, any more. Only the (minor problem) of
> the border pixels remains, and it is taken care of in [2].
>
> So, have fun with Octave in your Udacity course. (By the way, your Udacity
> link is login protected, I cannot read it.)
>
>      Hartmut
>
>
> [1] https://savannah.gnu.org/bugs/?50122
> [2] https://savannah.gnu.org/bugs/?50151
>
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-- 
- Oli

Oli Lalonde
http://www.syskall.com <-- connect with me!




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