Figure 4From: Gabor Directional Binary Pattern: An Image Descriptor for Gaze EstimationRobustness of the different histogram to images with lighting variation. GDBP (a, b), LBP (a, b), and DBP (a, b) mean that three operators are, respectively, applied on the white regions of image a and image b (see Figure 3), and is the direction of GDBP and DBP.Back to article page