1. A method for processing an image including a person or object that had been identified in the image, the method including: identifying in a pre-processing processor a plurality of image segments that divide the person or object into portions that capture the person or object; converting data from the image segments into Log-RGB color space data; calculating a histogram of the oriented gradients (HOG) of each image segment based on the Log-RGB color space data; and creating an appearance labeled image in an appearance labeling processor by assigning appearance labels to the image segments based on the calculated HOG of each image segment, where the appearance labels correspond to representative HOG values predetermined from an appearance image database.