“…While RGB is generally related to the spectral response of the human eye, HSV is more representative of the way humans perceive colors, and sometimes it is also more convenient for image processing. 10 In the RGB digital image eld, the major proportion of published research studies describe applications of digital cameras [11][12][13][14][15] and webcams [16][17][18] as acquisition systems and only few research studies concern the use of scanners. [19][20][21] Sullivan et al 22 has demonstrated that digital image analysis can provide information about infected cell populations and plaque formation.…”