Method for detecting movement of airborne displays

The invention relates to a method for detecting movement of airborne liquid crystal displays, and belongs to the field of movement detection. The method includes steps of firstly, modeling backgrounds; secondly, carrying out subtraction on the backgrounds to acquire moving targets; thirdly, detecting the moving targets in continuous video images by the aid of inter-frame difference processes, to be more specific, optionally selecting two frames of continuous video sequences, computing difference images G (x,y), extracting the moving targets by the aid of difference between pixels of the images of the continuous video frames, generating binary images, carrying out morphology filtering on the binary images, analyzing and judging connectivity of the images, determining that the targets are detected and regions are provided with the moving targets if pixel numbers of the certain connective regions are larger than given threshold values, and marking the moving targets in the original images according to moving target positions determined by the connective regions. The method has the advantage that micro-movement of objects can be monitored by means of combining movement detection algorithms with video monitoring technologies.