1. A pedestrian perception alert system configured to issue a warning in real-time when driver visual perception of a pedestrian is difficult, the pedestrian perception alert system comprising: a video camera configured to capture video image; an alert for issuing the warning; a processor in electrical communication with the video camera; a Pedestrian Detection Unit (“PDU”) configured to analyze the video image to detect the pedestrian; a Global Clutter Analysis Unit (“GCAU”) configured to generate a global clutter score, the global clutter score measuring the clutter of the entire video image; and a Local Pedestrian Clutter Analysis Unit (“LPCAU”) configured to generate a local pedestrian clutter score, the local pedestrian clutter score measuring the clutter of each of the pedestrians detected in the video image, wherein when the PDU detects a pedestrian in the video image the processor initiates both the GCAU and the LPCAU, the processer processes the global clutter score and local pedestrian clutter score so as to generate a pedestrian detection score, and processor further actuating the alert when the pedestrian detection score is outside of a predetermined threshold so as to warn a driver that it is difficult to visually perceive a pedestrian.