Methods and systems for detecting temporally oscillating sources in video signals using a recursive infinite impulse response (IIR) filter technique

摘要

A method for detecting a temporally oscillating source in digital video signals includes: using an imaging device to capture a sequence of input images of a scene; generating digital video signals from the sequence of input images; and processing the digital video signals using a recursive Infinite Impulse Response (IIR) filter technique based on a differentiated version of Goertzel's Algorithm to detect a temporally oscillating source in the digital video signals. In various embodiments, the method also includes generating a visual display of the scene including one or more graphical elements at least one of which pertains to a detected temporally oscillating source.