STSW-IMG050

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Design Win

AI powered hand posture recognition solution based on VL53L7CX and VL53L8CX multizone Time-of-Flight ranging sensors

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Product overview

Description

Have you ever dreamed of controlling a machine or sending emojis to your friends using hand gestures? This is now a reality! Thanks to ST's multizone ToF sensors, this solution does not require a camera module. AI algorithms run on the STM32 microcontroller (NUCLEO-F401RE) with low processing complexity and low-power consumption. To access the AI learning resources for hand posture recognition, go to st.com/hand-posture.

We also offer gesture recognition software with a complete development ecosystem (STSW-IMG035), including ready-to-use example code and an intuitive GUI for reduced design times.

In addition, we have developed a comprehensive library that integrates gesture recognition, hand posture recognition, and smart presence detection into a single software solution. This combined software is available in the "Get Software" section of the STSW-IMG050.

Download the STSW-IMG048 data brief to learn more about smart presence detection.

  • All features

    • Hand posture recognition solution using an ST multizone ToF sensor on a NUCLEO-F401RE
    • Development process based on the following steps:
      • Define your own set of hand postures (dataset)
      • Collect your dataset from multiple users using distance and signal data from the VL53L7CX or VL53L8CX 8x8 multizone ToF sensors
      • Train the AI network using the training script from the STM32 model zoo
      • Implement the AI model into your STM32 MCU using the "STM32Cube.AI developer cloud" or the "Hand posture getting started guide" from the STM32 model zoo
    • Approach enables quick development with configurable hand postures, small memory footprint, and low processing power
    • The ToF sensor can be positioned in front of the user (personal computer, satisfaction box), pointed at the ceiling (cooking plate), or fixed on a moving object (smart glasses, AR/VR headset, robotics), depending on the application
    • The same unique solution supports the:
      • VL53L7CX ToF 8x8 multizone ranging sensor with 90° field of view (FoV)
      • VL53L8CX low-power, high-performance 8x8 multizone ToF sensor with 65° FoV
    • Hand posture recognition using FlightSense technology:
      • Supports full privacy as no images are captured
      • Works independently of target reflectance and performs well even with gloves
      • Allows easy integration of the "all-in-one sensor" which can be hidden behind a dark cover glass
      • Ensures low power consumption and easy integration into any architecture

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