For identification purposes, what is the minimum pixel density required?

In the context of video surveillance and identification purposes, pixel density is critical because it directly influences the clarity and detail of the captured images. For effective identification, a higher pixel density ensures that facial features and other identifying characteristics can be distinguished clearly.

The minimum pixel density required is generally established around 100 pixels per face, which is widely accepted as the threshold for facial recognition systems to function effectively. However, for even more reliable identification under various conditions, a pixel density of 150 pixels is often recommended. This allows for clearer imaging in a variety of lighting conditions and distances, ensuring that facial details are captured well enough for positive identification.

Thus, 150 pixels is considered the minimum standard to achieve satisfactory identification, making this the correct choice for surveillance system requirements.