1. A method for estimating a distance between a first target and a second target in an image, the method to be implemented using a distance estimation system that includes a processor module, the method including the steps of: a) generating, by the processor module, an image depth map associated with the image; b) generating, by the processor module, first position information associated with a first position which corresponds to the first target in the image, and second position information associated with a second position which corresponds to the second target in the image; and c) computing, by the processor module, an estimate of a distance between the first target and the second target based on at least the image depth map, the first position information and the second position information.