Saliency map selection can be slow (server-side rendering)

[brianhhu]

This may be a limitation of the data-passing required for trame, but this issue would be a basic exploration of potential bottlenecks in saliency map visualization (assuming they have already all been computed, and the user is selecting a specific class or detection). This currently occurs with a slight noticeable delay when using the app. Potential solutions should be noted and can be addressed based on an assessment of level of effort.

[jourdain]

I will need the app running to investigate that part.