ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Nowadays, with the development of the electronics, a video camera can produce hi-resolution and hi-speed images with a very good sensitivity. A typical application is the execution of the Air Data System (ADS) Calibration Flight Test Campaign (FTC) using the Tower-Fly-By method, where the aircraft reference altitude is computed from video frames. To improve efficiency, safety and effectiveness for this FTC, the Flight Test Research Institute (IPEV) developed a near real-time video processing application to compute the aircraft altitude from 720i video frames at up to 400 fps. This development was executed as Master Science dissertation along with Itajubá State University (UNIFEI). Tests results demonstrated satisfactory performance for this tool compared to Ground Telemetry System (GTS) and Global Positioning System (GPS).