Figure 1.

Illustration of OCT signals is presented in the dimensional space of frequency components. (A) The OCT signal along a depth containing static scatters, dynamic scatters, and additive noise; (B) frequency components of tissue signal, dynamic moving signal and additive noise; (C) separating moving signal from tissue signal with non-adaptive HPF; and (D) that with adaptive HPF. OCT, optical coherence tomography; HPF, high pass filtering.