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galliot-us / neuralet

Neuralet is an open-source platform for edge deep learning models on edge TPU, Jetson Nano, and more.
https://neuralet.com
Apache License 2.0
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centroid and fourpoint coordinate #123

Closed Lalithmohan24 closed 1 year ago

Lalithmohan24 commented 4 years ago

Hello,

I am executing your smart social distancing application i have some doubts in this application.

Questions

1.Difference between centerpointdistance and fourpointdistance explain with pictures?

2.In this application your using NMS concept to avoid duplicate bounding boxes but when i try to give an a video as input there is a duplicate bounding box occuring what is the problem and how to solve it?

duplicate-bounding-box

3.How do you calculate the bounding boxes coordinate, centroid coordinate and fourpoint coordinate please give me an image representation for understanding the concept?

4.How to calculate the length of the two bounding boxes based on axis or direction?

undefined-references commented 4 years ago

Hi @Lalithmohan24,

as it came in parameter description, CenterPointsDistance compare center of pedestrian boxes together and FourCornerPointsDistance compare four corresponding corner points of pedestrian boxes and suppose the minimum value of them as people distances.

Four corner points method supposed to be more sensitive and accurate in smaller scenes. You need to apply both with different DistThreshold to find a better combination for your own site. We can help to you to fine-tune parameters on your site if we can access to an instance of your stream.

There is a detailed tutorial on how the application works in Neuralet website.

mhejrati commented 4 years ago

Hi @Lalithmohan24

Which device and model are you running this on?

Some answers below: 2- For the NMS, you can play with the parameters in the config to see if any of them work better or not, however, ultimately the person detection model can be adjusted and fine-tuned to reduce those instances. 3- Let me know if this is not clear enough, happy to clarify further: https://neuralet.com/docs/tutorials/smart-social-distancing/ 4- Can you please elaborate?