SDK functions with examples:
1. Object counting (People and vehicle) - entering in and out over a line area
2. Average People waiting time in queue
3. Crowd detection - group of people can be identified over designated area (optional and will negotiate new price with this function)
Since definitely most bidder will use OpenCV. I will prefer written in Python or C#. Full source code and SDK usage documentation.
Please refer to the document attached for requirements and also, if unfamiliar with OpenCV please do not bid.