python - Retrieving values used to create colormap -

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i used matrix of values (denoting depths of objects in picture) , created colormap in matplotlib using scheme "jet". visualization purpose.

however, unfortunately saved rgb heatmap (created colormap) disk instead of depth values. did around 60,000 images before realized mistake.

if familiar jet colormap, can advise if there way retrieve 2d depth information reverse engineering heatmap? running short of time. appreciated.


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