A method of color optical flow computation with local and global model combined

It is a problem that the results are unstable when local method is used to estimate optical flow at smooth color points. A method was presented to estimate stability through the condition number of local coefficients matrix. And the color results of global smooth were used to replace the unstable results of local color method. The combined model was provided with the advantages of high precision of local model and density of global model. Finally, the fusion optical flow result was filtered by median filter. Experiments show that the method produces density optical flow field and precision of the result can be improved.