Figure 4
From: Colour information biases facial age estimation and reduces inter-observer variability
Face colour in Lab space. Note: The example image was drawn from the Chicago Face Database 29. (a) Example stimulus image and map of pixels where a* < 0. (b) Pixel counts of Lab space a* and b* values for this image. Most pixels are red (a* > 0) and yellow (b* > 0). (c) Mean chromaticity of face images in Lab space. Each of the 200 data points represents a particular stimulus image. All have mean a* and mean b* greater than zero.
