Bootstrap carousel: Measure time that an image is open

does anyone know how to measure the time that an image in an Bootstarp 5 carousel (see below) is visible for the user? The idea is to measure the time that the user is looking at a specific image (e.g. image of a product) in the carousel.

f.e. the time in milliseconds that the image "image_1" is visible (open).

Many thanks,

 ````
 <div id="carouselExampleControls" class="carousel slide" data-bs-ride="carousel" data-bs-interval="false">
      <div class="carousel-inner">
        <div class="carousel-item active">
          <img src="..." class="d-block w-100" alt="image_1">
        </div>
        <div class="carousel-item">
          <img src="..." class="d-block w-100" alt="image_2">
        </div>
        <div class="carousel-item">
          <img src="..." class="d-block w-100" alt="image_3">
        </div>
      </div>
      <button class="carousel-control-prev" type="button" data-bs-target="#carouselExampleControls" data-bs-slide="prev">
        <span class="carousel-control-prev-icon" aria-hidden="true"></span>
        <span class="visually-hidden">Previous</span>
      </button>
      <button class="carousel-control-next" type="button" data-bs-target="#carouselExampleControls" data-bs-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="visually-hidden">Next</span>
      </button>
    </div>
    ````

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