A method for processing asynchronous signals generated by a light sensor, the light sensor having a matrix of sensing elements, the method comprising: receiving, from each sensing element of the matrix, a respective event-based signal sequence including events asynchronously produced as a function of variations of light incident on the sensing element and light level values respectively associated with at least some of the events; generating an image comprising pixels corresponding spatially to the sensing elements of the matrix; and repeatedly determining a set of edge pixels among the pixels of the image, wherein generating the image comprises updating each pixel of the image based on a light level value associated with a most recent event in the event-based signal sequence received from the sensing element corresponding to said pixel of the image, wherein determining the set of edge pixels comprises: selecting pixels of the image, wherein the selected pixels comprise pixels of the image corresponding to sensing elements from which the received event-based signal sequences include at least one event after a previous determination of the set of edge pixels, and pixels of the previously determined set of edge pixels; evaluating respective local contrast measures with respect to the selected pixels of the image; and deciding whether or not the selected pixels belong to the set of edge pixels based on the evaluated local contrast measures. receiving, from each sensing element of the matrix, a respective event-based signal sequence including events asynchronously produced as a function of variations of light incident on the sensing element and light level values respectively associated with at least some of the events; generating an image comprising pixels corresponding spatially to the sensing elements of the matrix; and repeatedly determining a set of edge pixels among the pixels of the image, wherein generating the image comprises updating each pixel of the image based on a light level value associated with a most recent event in the event-based signal sequence received from the sensing element corresponding to said pixel of the image, wherein determining the set of edge pixels comprises: selecting pixels of the image, wherein the selected pixels comprise pixels of the image corresponding to sensing elements from which the received event-based signal sequences include at least one event after a previous determination of the set of edge pixels, and pixels of the previously determined set of edge pixels; evaluating respective local contrast measures with respect to the selected pixels of the image; and deciding whether or not the selected pixels belong to the set of edge pixels based on the evaluated local contrast measures. wherein generating the image comprises updating each pixel of the image based on a light level value associated with a most recent event in the event-based signal sequence received from the sensing element corresponding to said pixel of the image, wherein determining the set of edge pixels comprises: selecting pixels of the image, wherein the selected pixels comprise pixels of the image corresponding to sensing elements from which the received event-based signal sequences include at least one event after a previous determination of the set of edge pixels, and pixels of the previously determined set of edge pixels; evaluating respective local contrast measures with respect to the selected pixels of the image; and deciding whether or not the selected pixels belong to the set of edge pixels based on the evaluated local contrast measures. selecting pixels of the image, wherein the selected pixels comprise pixels of the image corresponding to sensing elements from which the received event-based signal sequences include at least one event after a previous determination of the set of edge pixels, and pixels of the previously determined set of edge pixels; evaluating respective local contrast measures with respect to the selected pixels of the image; and deciding whether or not the selected pixels belong to the set of edge pixels based on the evaluated local contrast measures.