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CCS/IWR1642: Occupant Detection algorithm question

Part Number: IWR1642

Tool/software: Code Composer Studio

1th question about the *.cfg file ,

coeffMatrixRow 0 -14.409613 -8.187467 -8.019457 3.833826 4.045485 -0.539210
coeffMatrixRow 1 -12.465002 -2.228748 -5.612140 4.324446 -7.912656 0.528747
coeffMatrixRow 2 -9.210626 -3.004206 -0.082298 -2.949700 7.538751 0.246658
coeffMatrixRow 3 -1.917373 2.299849 2.389683 7.035545 6.675194 -0.099186
meanVector 23.992751 23.689970 -3.388539 -3.691319 0.816150
stdVector 8.495360 8.497394 2.198640 2.432388 0.196337

how to generate the coefficient matrix row data、 mean vector、std vector ? 

What are the algorithms or principles for generating these data?

https://e2e.ti.com/support/sensors/f/1023/p/734534/2713149?tisearch=e2e-sitesearch&keymatch=coeffMatrixRow#2713149  this link mentioned  the demo's user guide ,but I didn't find a way how to generate these cfg data,

if we add more boxes ,how to generate the coefficient matrix row data、 mean vector、std vector ? 

 

2nd question about 

Vehicle Occupant Detection Reference Design.pdf  on 11 page, formula (15),ρ1,2[t],ρ2,3[t],ρ3,1[t], these correlation coefficients’ order is fixed or flexible ?

if they are flexible, how to arrange the order of these coefficients ?

 

formula (19)logistic function g(x) = 1/(1+exp(-x)); must we use this logistic function ? have any other logistic functions in stead?

formula (21)the max probability’s index how to correspond whether the three boxes have targets or not ? 

  • Full algorithm descriptions are given here: https://www.ti.com/tool/TIDEP-01001

    That said, this is just one implementation - you are free do use your own algorithms.  Many customers use the demo up through the heatmap generation then use their own algorithms to detect occupancy in the zones.

    If you wish to use the demo's feature extraction and decision code, the HTML user guide in the /docs folder gives step by step instructions.  Go to the end of the user guide and read the section called Zone and Coefficent Tuning.