New Method of Image Background Suppression Based on Soft Morphology and Retinex Theory

Table 1

Comparison of three background suppression methods.

	Original image	WTH transform		SWTH transform		Our method
Indicators
Img. 1	16.8	36.38	15.45	39.23	16.96	42.2	18.42
Img. 2	23.29	37.12	9.32	41.37	11.49	49.64	15.14
Img. 3	15.90	33.55	14.93	35.17	15.87	35.71	16.19