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I am implementing a program on Arduino Nano ESP32: the KY-037 microphone is connected to the board and collects five seconds of analog signal. Then, an algorithm is applied to create a 128 x 128 matrix from the five-second signal. Now, I would like to apply the HOGDescriptor function from OpenCV. Are there any possibilities to do so? How can OpenCV be installed on Arduino?

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    I vote to reopen. The question that is marked as duplicate only talks about the classic AVR based Arduinos. OpenCV on an ESP32 is possible, though in a reduced form. One seems to need the ESP32-DOWDQ6 chip for it. A quick search gave me this github project with OpenCV for ESP32 cross-compiled and this article on hackaday and the associated video about the ESP32-CAM.
    – chrisl
    Commented Sep 7, 2023 at 7:24
  • @chrisl I seen that library. Another way to solve this limitation is to run the arduino code until before the OpenCV library, which will run on a Python script on PC. Not perfect but I will try
    – Alice
    Commented Sep 7, 2023 at 13:08

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