Figure 1From: Robust spectral analysis of videocapsule images acquired from celiac disease patients Videocapsule simulation with random and temporal phase noise and air bubbles imposed. A. Average of frames 1, 11, ..., 191 before adding phase noise. B-F. Average of frames 1, 11, ..., 191 when phase noise is added to the entire 200 frame series. The temporal phase shift is ± 1, 2, 3, 4, and 5 image frames in panels B-F respectively. In panel F, air bubbles are also imposed.Back to article page