In this paper, the classical analysis of variance is extended to three-dime
nsional (3-D) Graeco-Latin squares design for multiframe processing applica
tions. Conspicuous physical features, including edges, lines, and corners,
can then be expressed as contrast functions. This enables the development o
f a new methodology for detecting moving objects embedded in noise. The new
detector exploits spatial and temporal information uniformly most powerful
in a Gaussian environment with unknown and time-varying noise variance. Al
so found is that a moving object detector based on contrast functions coinc
ides with a sufficient statistic of the generalized likelihood ratio test.
Extensive image analysis demonstrates the practicality of the detector and
compares favorably to other classes of detectors.