Open AccessA simple method to estimate CIE‐L*a*b* values of the skin from its videomicroscopic image
Author(s) -
Takiwaki Hirotsugu,
Miyamoto Hiroshi,
Ahsan Kamrul
Publication year - 1997
Publication title -
skin research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.521
H-Index - 69
eISSN - 1600-0846
pISSN - 0909-752X
DOI - 10.1111/j.1600-0846.1997.tb00158.x
Subject(s) - colorimeter , erythema , simple (philosophy) , microscope , chromaticity , image (mathematics) , mathematics , artificial intelligence , optics , physics , computer science , dermatology , medicine , philosophy , epistemology
Background/aims: The C I E (Commission Internationale de I'Eclairage)‐L*a*b* is the most popular standardized color system. The purpose of this study was to develop a simple method for estimating C I E‐L *a*b* values of the skin using a video microscope and a computer. Methods: Skin images were obtained with a video microscope of various anatomical locations and ultraviolet B‐induced erythema and pigmentation in seven subjects. R G B (red, green, and blue) color coordinates of the images were converted into quasi‐ L*a*b* values using formulae similar to those defined by C I E. These values were compared with C I E ‐L *a*b* values simultaneously measured with a colorimeter. Results: The correlation coefficients between C I E‐ and quasi‐ L * a * b * values were 0.97 (L*), 0.91 (a*), and 0.84 (b* Conclusions: Our method may be useful for deriving CIE‐ L * a * b * values of the skin from its video microscopic image.