Pixels on Target (PoT)

The term “pixels on target” refers to the concept of pixel density in relation to a specific area or object within a camera’s field of view. It’s a measure of how many pixels from the camera’s sensor are focused on a particular target area. This is particularly important in AI and image recognition algorithms, where a certain level of detail is required for an AI algorithm to be able to recognize an object.

To calculate pixel density on a target, you divide the camera's horizontal resolution by the field of view width. This gives you a value in pixels per foot (PPF) or pixels per meter (PPM), depending on the measurement system used. You then multiply that value by the dimensions of your subject, so for example a 2m by 3m target at a detail value of 10ppm would measure 20 horizontal pixels on target (HPoT) by 30 vertical pixels on target (HPoT) for a total of 600 PoT.