Abstract: An apparatus including an event detection filter and a spatial event accumulator. The event detection filter receives at least one camera video output and generating a plurality of difference images from a time sequence. Each difference image is based on a time-subtraction of the current image from the previous image, the time sequence above an ambient pixel intensity level including at least one of at least one true flash event and at least one false positive. The spatial event accumulator receives the plurality of difference images from the event detection filter, merges a plurality of spatially proximate smaller flash events of the possible flash event to determine a shape of a single larger flash event, and measures pixel intensities of the plurality of spatially proximate smaller flash events to determine a varying brightness over the shape of the single larger flash event.

Abstract: An authomated system for remote detection of muzzle blasts produced by rifles, artillery and other weapons, and similar explosive events. The system includes an infrared camera, image processing circuits, targeting computation circuits, displays, user interface devices, weapon aim point measurement devices, confirmation sensors, target designation devices and counterfire weapons. The camera is coupled to the image processing circuits. The image processing circuits are coupled to the targeting location computation circuits. The aim point measurement devices are coupled to the target computation processor. The system includes visual target confirmation sensors which are coupled to the targeting computation circuits.