Fog assistance on smart mobile devices

Fog is one of the most dangerous weather phenomena in driving scenarios that can benefit from driving assistance systems. For this reason we have developed an affordable advanced driving assistance solution that runs on Android based smart mobile platforms. Our system is able to detect the presence of fog in images captured from a moving vehicle, to estimate the fog's density, compute the visibility distance and provide the driver with a safe speed estimate. In addition an original image enhancement algorithm is presented. This algorithm is based on a mathematical model that considers the exponential variation in fog's density with respect to the distance to the mobile device. Our system performs successfully in real time, in day-time fog, in a wide variety of driving scenarios, including urban, rural and highway scenarios.