Is VL53L1X people counting source code available?

[CNiev]

I saw the VL53L1X used as a people counter video at:

https://www.youtube.com/watch?v=c91Ve-g0J2U

Is the source code used in that video available?

TIA,

[Kabron]

I join to question.

[AVARG.2]

What is the idea behind people counting using VL53L1X sensor Since this sensor is used for measuring the distance. How to detect whether the obstacle is people or not?

[Kabron]

I guess they use more than one ROI SPAD regions, but it is beyond current API

[Kabron]

I did it! It is very simple.

Unlike ST I will not keep mysterious silence and will publish the code after some tests.

[Kabron]

This example illustrates direction recognition with the single VL53L1X TOF sensor. Two Regions Of Interest(ROI) are defined in SPAD sensor array:

 ROI1 ROI2

0,15___12,15 

 ####----####

 ####----####

 ####----####

 ...

 ####----####

 ####----####

_____3,0 _____15,0

Data measurements distance0 and distance1 cyclically readed from both ROIs, switching them on the fly.

Then STM32duino_Proximity_Gesture library used for event interpretation.

To suit Arduino requirement I added necessary library description to Pololu vl53l1_api.

Also, to handle handMustCoverBoth parameter support in STM32duino_Proximity_Gesture library, I had to slightly modify tof_gestures_DIRSWIPE_1.cpp and tof_gestures_DIRSWIPE_1.h. Both libraries are included in this bundle.

This code is for WEMOS D1 mini Lite, but with board and pins adjustments will work with any Arduino.

Data outputs to serial @115200 and to OLED. For investigations and adjustments it is suitable to use SerialPlot: https://bitbucket.org/hyOzd/serialplot.

Files here:

https://yadi.sk/d/UIIAXFol3P_jXg

Video here: 

https://www.youtube.com/watch?v=_ZjAZ7eieNM

[AVARG.2]

Thanks for sharing your source code. I am using Nucleo - F401RE board with VL53L1X sensor. Is it possible to use this code in stm nucleo board?

[Kabron]

Sure.

You can adapt SimpleRanging example code (from STM32CubeExpansion_53L1A1_V2.0.1) to suit the task.

[AVARG.2]

Actually my doubt is when the sensor detects something , how we identify its a people or not. This sensor detects anything so how we distinguish them?

[CNiev]

Thanks for sharing! This is very interesting!

I understand you made some changes to standard libraries.

Have you considered submitting a patch so it gets integrated in the library?

[Kabron]

No, but "Both libraries are included in this bundle."

[AVARG.2]

In that people counting video, they have shown that they have specified some person detection distance range. How this range can be obtained?

[Kabron]

How they did it I do not know as their code is not available.

In my variant range defined as:

int tof_gestures_initDIRSWIPE_1(int32_t rangeThreshold_mm, long minSwipeDuration, long maxSwipeDuration, bool handMustCoverBoth, Gesture_DIRSWIPE_1_Data_t *data)

[legeardp]

Hi,

The source code is not available yet on www.st.com but will be made available in the coming weeks.​

If you can't wait please email me : [e-mail]

[Kabron]

Basing on the current ST answer-speed, we could estimate appearing of the source code in the next few years.