1. A method in a computing device for identifying advertisement images of display pages, the method comprising: providing training images of display pages; labeling the images as advertisement images or non-advertisement images; generating a feature vector for each of the training images, the feature vector including features derived from the display page of the image; training a binary classifier using the feature vectors and labels of the images; and classifying an image as an advertisement image or non-advertisement image by generating a feature vector for the image and applying the trained binary classifier to the generated feature vector of the image.