Visual Tracking in Engineering Based on Sampling Rate Conversion and Trace Forecast

To cope with the occlusion and intersection of target, trace forecast is employed in the visual tracking. Considering the continuity of location, velocity and acceleration of the target, sampling rate conversion based on cubic spline interpolation is proposed to cope with the variance of sampling rate in the multirate system. Target trace is fitted and the location of the object in the future is predicted by subsection least square method with the latest composed locations of the target. The best number of input data to fit the trace of the target and predict the location of the target is determined by experiments and analyses of tracking performance with variant numbers of input data. Experiment results show that the proposed sampling rate conversion algorithm and trace forecasting algorithm are effective in real time visual tracking.