Heatmap from curvature distribtuion

Hi, I am trying to use the Kappa plugin for imageJ to measure curvature. I think I successfully generate a distribution of curvature, but I would like to visualise this with a heatmap, similar to this.


This is the point I’m at:


Has anyone got any experience of doing this? Apologies if this has been answered elsewhere, I did search for solutions etc. but couldn’t find anything.


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