Sobel

[Juan Nunez-Iglesias]

Is it what the "reference" implementation returns? Either way the sign is
valuable info. +1 for returning the actual filter output.

On Thu, Nov 20, 2014 at 11:25 AM, Johannes Schoenberger <jsch at demuc.de>
wrote:

> Hi,
>
> Why are we returning the absolute values in the hsobel and vsobel
> functions?
>
> I do not see the benefit.
>
> Johannes
>
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