Modified Global and Modified Linear Contrast Stretching Algorithms: New Colour Contrast Enhancement Techniques for Microscopic Analysis of Malaria Slide Images

Table 2

The DSM for LCS and MLCS techniques that have been applied on 6 malaria images.

Images	Contrast enhancement techniques	Distribution separation measure (DSM)
		Red	Green	Blue	Average
Blurred trophozoite	LCS	37	31	23	30.33
	MLCS Set I	75	65	39	59.67
	MLCS Set II	66	52	20	46.00
	MLCS Set III	60	49	19	42.67
Blurred trophozoite with additional salt-and-pepper noise	LCS	5	5	5	5.00
	MLCS Set I	71	64	39	58.00
	MLCS Set II	64	51	19	44.67
	MLCS Set III	59	46	18	41.00
Normal ring	LCS	23	32	40	31.67
	MLCS Set I	67	79	80	75.33
	MLCS Set II	52	64	64	60.00
	MLCS Set III	46	53	57	52.00
Underexposed trophozoite	LCS	41	40	28	36.33
	MLCS Set I	89	80	58	75.67
	MLCS Set II	85	73	48	68.67
	MLCS Set III	76	67	44	62.33
Normal schizont	LCS	9	8	13	10.00
	MLCS Set I	35	36	33	34.67
	MLCS Set II	13	12	10	11.67
	MLCS Set III	11	9	10	10.00
Blurred gametocyte	LCS	41	41	19	33.67
	MLCS Set I	88	70	37	65.00
	MLCS Set II	84	59	20	54.33
	MLCS Set III	75	55	19	49.67