Local space-time event stream filtering method and system based on adaptive threshold

The invention relates to the technical field of filtering, in particular to a local space-time event flow filtering method and system based on an adaptive threshold value. The method comprises the following steps: a block reading step: receiving an asynchronous event stream, and iteratively reading event stream blocks at fixed time; a space-time plane construction step: receiving the event flow block, accumulating the number of events in a time dimension by taking pixels as units, calculating pixel activity values, and forming a two-dimensional space-time plane; a local sliding window step: receiving the two-dimensional space-time plane, setting a local window with a fixed size on the two-dimensional space-time plane, and calculating a window mark value of each sliding window; a noise candidate domain selection step: receiving the window mark value, calculating a noise candidate threshold value, and selecting a noise candidate domain according to the noise candidate threshold value; and a noise screening step