extracting background Bit-layer-A method of achieving background is presented

which detect the moving object with statistics from complex

scene. Compared with other methods of achieving image

background, this approach can achieve and update

simultaneously background. The method of moving object

detection has the advantages of simplicity in computation,

strong resistance to noise. The state transition matrix and

observation matrix of Kalman filter are then defined to track

the detected object. The experiment indicates that the method

proposed has stability of forecast.