New color image histogram-based detectors

Abstract

Detecting an interest point in the images to extract the features from it is an important step in many computer vision applications. For good performance, these points have to be robust against any transformation that can be done on the images such as viewpoint change, scaling change, rotation, and illumination and, etc. Many of the suggested interest point detectors are measuring the pixel-wise differences in the image intensity or image color. Lee and Chen [1] used image histogram representation instead of pixel representation to detect the interest points. They used the gradient histogram and the RGB color histogram representation. In this work, different color model's histogram representation such as Ohta-color histogram, HSV-color histogram, Opponent color histogram and Transformed-color histogram are implemented and used in the proposed interest point detector. These detectors are evaluated by measuring their repeatability and matching score between the detected points in the image matching task and the classification accuracy in the image classification task. It is found that as compared with intensity pixels detectors and Lee's histogram detectors, the proposed histogram detectors performed better under some image conditions such as illumination change, blur and some other conditions. © 2011 Springer-Verlag.