Hybrid Discrete Wavelet Transform and Gabor Filter Banks Processing for Features Extraction from Biomedical Images

Table 2

SVM classification specificity as a function of feature extraction method and level of DWT decomposition*.

	DWT	DWT-Gabor	DWT	DWT-Gabor
Decomposition level	One	One	Two	Two
Mammograms	97.81% (±0.02)	100%	88.85% (±0.05)	92.09% (±0.06)
Retina	6.81% (±0.04)	100%	2.32% (±0.10)	100%
Brain MRI	21.55% (±0.01)	99.58% (±0.01)	0%	97.24% (±0.01)

∗Tenfold cross-validation used for mammograms and retina images, leave-one-out used for brain MRIs.