Accession Number:

ADA616021

Title:

Comparison of Sensor Noise Effects on Fitts and Projection Based Phase Only Cross Correlation Algorithms for High Speed Video Trackers (PostPrint)

Descriptive Note:

Technical paper 30 Jun 2011-30 Sep 2014

Corporate Author:

APPLIED TECHNOLOGY ASSOCIATES INC ALBUQUERQUE NM

Personal Author(s):

• Dayton, David C.
• Nolasco, Rudolph
• Robinson, Mary L.
• Lasche, James B.

Report Date:

2014-09-30

Pagination or Media Count:

11.0

Abstract:

The Fitts correlation algorithm has been widely used for over forty years in high speed video trackers. It has the advantage that it is very simply implemented in a digital computer with a small number of calculations. At each step the algorithm attempts to estimate the shift between an image of a moving target and a proto-type image. There are several well-known short comings of the Fitts algorithm. First the error in the shift estimate increases if the shift is greater than one pixel of the digital image. Second the Fitts algorithm is susceptible to errors from sensor noise if the video images have low signal to noise ratio. These errors can force a lower tracker closed loop bandwidth to maintain track loop stability. An alternative correlation tracker algorithm is known as Projection Based Phase Only Correlation. In this paper we compare the two algorithms with respect to the effect of sensor noise.

Descriptors:

• *ALGORITHMS
• *NOISE
• *OPTICAL TRACKING
• *VIDEO IMAGES
• COMPARISON
• CORRELATION
• ERRORS
• IMAGES
• MOVING TARGETS
• OPTICAL RADAR
• SIGNAL TO NOISE RATIO

Subject Categories:

• Numerical Mathematics
• Optical Detection and Detectors
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE