TY - JFULL AU - Soon-Hyun Park and Takami Matsuo PY - 2008/9/ TI - Time-Derivative Estimation of Noisy Movie Data using Adaptive Control Theory T2 - International Journal of Electrical and Information Engineering SP - 2817 EP - 2825 VL - 2 SN - 1307-6892 UR - https://publications.waset.org/pdf/10414 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 20, 2008 N2 - This paper presents an adaptive differentiator of sequential data based on the adaptive control theory. The algorithm is applied to detect moving objects by estimating a temporal gradient of sequential data at a specified pixel. We adopt two nonlinear intensity functions to reduce the influence of noises. The derivatives of the nonlinear intensity functions are estimated by an adaptive observer with σ-modification update law. ER -