Bio-inspired looming direction detection method

The retina inspired approaching object detection algorithm - based on the recently identified Pvlab-5 ganglion cell - is a computationally easy segmentation free method. The original method can detect only the dark looming objects against bright background. This paper shows a modified algorithm, which can detect any looming and recessing objects against dark or bright background. Moreover, we show a post processing evaluation method, which can measure the lateral motion direction using the spatial-temporal activities of the ganglion cells without introducing any hard calculation.