Figure 1

Impact of scale on face images. Misclassified faces using standard LBP and correctly classified using GRAB: Gallery and probe consisted of the same set of images with only difference in scale. Probe images are low-scale images which are resized to higher scale to match the size of gallery images as we are using the histogram-based method. Top row consists of probe images of size 30 × 26, and bottom row consists of probe images of size 15 × 13. Both gallery and probe images are resized to 13 × 150 for matching. Images on the left side are probe images, and the images on the right are gallery images. The images in the red box are the misclassified images using standard LBP, and the images in the green box are the correctly classified images using GRAB.