Eikonal solver in Matlab

Hi,

I'm looking for an Eikonal solver in 2d, 3d or nd. The best would be in matlab.

I remind that the Eikonal equation is :
find u such that |grad(u)|=f where f is an input signal.

It becomes a classical tool in image processing and maybe someone has got a good implementation.

Thanks,
Best regards,
Pierre
.

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