Delay detector apparatus and method for plural image sequences

摘要: A system determines the delay of a delayed sequence images (2) with respect to relatively undelayed version (1). The takes samples (13) and (11) at approximately same position (10) compares over multiple image frames thereby determining which most closely matches given (15). By knowing image, coarse is determined. fine measurement achieved by adding instantaneous known repetitive feature respective sequences (6, 7, 8). invention also useful for comparing other determine closest match. When used video signals, (17) are taken an A-D (21) stored in memory (23). Samples (16) (18) (20). microprocessor (24) inspects memories (20 & 23) correlate communicate results via communications port (26) or display (25).