The invention relates to a building structure displacement measurement method based on a dynamic visual sensor (DVS), which belongs to the field of visual measurement, and comprises an
event stream processing method: intercepting event streams in a short period of time by adopting a method of accumulating according to time, and accumulating the event streams into pictures to be output; image de-noising: if some noisy points may exist in the image accumulated by the
event stream, carrying out de-noising by adopting mean filtering;
edge detection: carrying out
automatic threshold segmentation on the denoised image, and extracting the edge of a target circle by adopting an improved adaptive threshold canny operator; positioning a circle through
Hough transform: positioning the circle through
Hough transform based on gradient information, and filtering out miscellaneous circles according to the
radius and position of the circle; and
scale transformation: converting the pixel displacement into physical displacement according to the
millimeter / pixel
conversion factor. The dynamic
vision sensor is adopted, the problem of
motion blur caused by an RGB camera is solved, the data size is small, the
processing speed is high, and the direction is provided for monitoring the displacement of the building structure in real time.