Imagine walking on a busy street at night and suddenly hearing loud shouting, followed by a large commotion. An incident has just happened right at the corner of the witness’ eye. They probably heard some noise and saw bits and pieces. Nevertheless, chances are that they would not be able to recall every detail of what happened based on their line of sight and by just plain memory. It was dark after all.
This is basically the same dilemma that many establishments nowadays face with their traditional security surveillance. There might be cameras in the area, but not enough to cover large scenarios. Large areas typically require more cameras, leading to high deployment costs that many of us cannot afford.
