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

Table 3

The DSM for the four contrast enhancement based on normal, underexposed, blurred, and overall malaria images.

Images	Contrast enhancement techniques	Distribution separation measure (DSM)
		Red	Green	Blue	Average
50 normal images	GCS	21.84	41.70	17.26	26.93
	LCS	36.92	41.72	45.32	41.32
	MGCS Set II	48.22	89.90	63.62	67.25
	MLCS Set I	83.35	77.40	74.96	78.57
50 underexposed images	GCS	18.84	43.20	17.32	26.45
	LCS	36.38	43.32	36.46	38.72
	MGCS Set II	32.90	80.08	55.92	56.30
	MLCS Set I	67.59	72.22	64.06	67.96
50 blurred images	GCS	19.50	27.34	10.78	19.21
	LCS	34.34	27.80	16.18	26.11
	MGCS Set II	50.36	66.26	19.18	45.27
	MLCS Set I	82.19	62.10	20.68	54.99
Overall 150 images	GCS	20.06	37.41	15.12	24.20
	LCS	35.88	37.61	32.65	35.38
	MGCS Set II	43.83	78.75	46.24	56.27
	MLCS Set I	77.71	70.57	53.23	67.17