Table 2.

Six color video frame image discriminant features selected by three hybrid meta-heuristic methods: ANN-ACO, ANN-SA and ANN-GA.

Method	Selected discriminant features
hybrid ANN-ACO	length to width ratio, variance difference, standard deviation H in HSV color space, correlation, mean Y component in CMY color space, sum of squares
hybrid ANN-SA	mean CMY components, standard deviation S in HSV color space, sum of variance, inverse difference normalized momentum, cluster prominence, variance difference
hybrid ANN-GA	standard deviation of S component in HSV color space, standard deviation of S component in HIS color space, mean Cb component in YCbCr color space, standard deviation of I component in YIQ color space