Color Image Segmentation for Medical Images using L*a*b* Color Space

Cosmetics Alter Biologically-Based Factors of Beauty: Evidence from Facial Contrast

“…Pixel values for each color channel range from 0 (L*, black; a*, green; b*, blue) to 255 (L*, white; a*, red; b*, yellow), instead of the traditional 0 -100 and -127 to +127 CIEL*a*b* scales. This is because MATLAB represents L*a*b* color using unsigned 8 bit integer values, which by definition cannot be negative (see Baldevbhai and Anand, 2012, for a primer on digital representations of color spaces). MATLAB converts RGB images to CIEL*a*b* color space using the profile connection space (PCS) described the International Color Consortium guidelines for conversion (ICC;International Color Consortium, 2004).…”

Reduced yellowing of silver nanowire transparent conductive electrodes by simple hydrazine treatment

“…This indicates that hydrazine reacted with the silver nanowires rather than with the substrates, thereby reducing the b* values of the silver nanowire TCEs, which implies a reduction in the yellowing phenomena. 12 To investigate the electrical and optical properties of the silver nanowire TCEs as a function of hydrazine concentration, silver nanowire TCEs were treated with hydrazine solutions with concentrations ranging from 5 to 80 wt%. Table II shows the optical properties of silver nanowire TCEs as a function of the concentration of hydrazine.…”

L*a*b* color model based road lane detection in autonomous vehicles

“…The L*a*b* color space (also known as CIELAB or CIE L*a*b*) is one of the uniform color spaces with dimension L for lightness and a andb for the color-opponent dimensions (one color-three numbers) (Baldevbhai and Anand, 2012). The L*a*b* color space includes all perceivable colors, which means that its gamut exceeds those of the RGB and CMYK color models.…”

“…The smallest distance will tell us that the pixel most closely matches that color marker. For example, if the distance between a pixel and the red color marker is the smallest, then the pixel would be labeled as a red pixel (Baldevbhai and Anand, 2012). Creating an array that contains the color labels, i.e., Blue/Purple Band = 1, Green Band = 2, Magenta Band = 3, Cyan Band = 4, Yellow Band = 5 and Red Band = 6 will result in Bands shown in Fig.…”

“…This model is based on the colors red, green, yellow, blue, cyan and magenta, as shown in Fig. 2 (Baldevbhai and Anand, 2012). are the CIE XYZ Tristimulusvalues of the reference white point (the subscript n suggests "normalized") (Rathore et al, 2012).…”