Gradient-based motion measurement via multi-image wavelet transform

This paper presents an algorithm used for the gradient-based motion measurement via the multi-image wavelet transform according to the characteristics of wavelet transform. In this algorithm, the measurement accuracy is greatly improved because the motion between two images is measured via the data of many images. Moreover, in combination with the reliability measure, a multi-level simultaneous time differential is performed for the reliable light-stream constraints of the images via the rapid wavelet transform. As compared with the conventional motion estimation methods, the proposed algorithm based on the multi-level simultaneous wavelet transform avoids the propagation of errors between the decomposed levels, thus improving the measurement accuracy. The simulated results by experiments show that the proposed algorithm is not only accurate but also easy to implement.