1. A method, comprising: for at least one image frame of a sequence of image frames: converting, utilizing a first set of neurosynaptic core circuits, each pixel of the image frame to one or more corresponding neural spikes; processing, utilizing a second set of neurosynaptic core circuits, the neural spikes to extract one or more salient features from the image frame; generating a map representing the salient features extracted; and detecting presence of an object of interest in the image frame based on the map.