CCTV Coverage Heatmap for Shop

I already have a complete shop drawing in AutoCAD showing every wall, shelf, and fixture, along with the exact locations and specs for my existing CCTV cameras. What I need now is a clear heat-style overlay that highlights camera coverage across the whole floor plan so I can see at a glance where visibility is strong, where blind spots remain, and how the current layout might be improved.

You will start from my DWG (or PDF if you prefer) and use any professional CCTV design tool you are comfortable with—JVSG, AutoCAD add-ins, or equivalent—to generate a colour-graded heatmap. The final file should sit cleanly on top of the existing plan and include a simple legend that explains the intensity scale.

Deliverables
• Camera-coverage heatmap layered on my original AutoCAD drawing (DWG)
• High-resolution PDF export ready for management review
• A brief note summarising any blind spots or overlaps you notice

I value experience: if you have done similar visualisations before, please mention it and feel free to link a sample.