Research Article

Advanced Image Enhancement Method for Distant Vessels and Structures in Capsule Endoscopy

Table 4

Intensity enhancement in RGB channels.

RGBRGBRGB

M1M2PM
Image 10.71220.91171.01030.35770.45800.50840.34320.33060.3392
Image 20.57060.85450.97690.28680.42900.49050.28410.30050.2945
Image 30.43840.81991.02480.22050.41190.51540.20800.18860.2131
Image 40.57810.80630.95970.29050.40520.48270.27620.24070.2514
Image 50.57060.71120.92560.28710.35800.46700.27440.25390.1740
Image 60.65010.72290.91920.32790.36480.46740.32420.33330.2722
Image 70.58600.93071.00070.29480.46800.50510.29330.32570.3099

HEAHECLAHE
Image 10.41301.58602.97320.00550.38370.6665−0.02220.57101.0939
Image 20.28750.89051.5424−0.04180.20900.4789−0.09580.22210.5715
Image 30.22871.31713.0543−0.12070.26090.7773−0.16250.38791.1629
Image 40.34251.58152.8684−0.02170.35950.6638−0.04160.53251.0731
Image 50.63001.21103.67460.10060.26320.70720.10670.38791.3080
Image 61.16211.53455.16130.14280.23120.90840.27080.43671.7947
Image 70.36510.96442.73450.02880.27740.7700−0.02410.30601.0830