Multi-view fast object detection by using extended haar filters in uncontrolled environments

0167-8655/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.patrec.2011.10.004 ⇑ Corresponding author. E-mail addresses: [email protected] osaka-u.ac.jp (Y. Mae), [email protected] (H. (T. Arai). In this paper, we propose multi-view object detection methodology by using specific extended class of haar-like filters, which apparently detects the object with high accuracy in the unconstraint environments. There are several object detection techniques, which work well in restricted environments, where illumination is constant and the view angle of the object is restricted. The proposed object detection methodology successfully detects faces, cars, logo objects at any size and pose with high accuracy in real world conditions. To cope with angle variation, we propose a multiple trained cascades by using the proposed filters, which performs even better detection by spanning a different range of orientation in each cascade. We tested the proposed approach by still images by using image databases and conducted some evaluations by using video images from an IP camera placed in outdoor. We tested the method for detecting face, logo, and vehicle in different environments. The experimental results show that the proposed method yields higher classification performance than Viola and Jones’s detector, which uses a single feature for each weak classifier. Given the less number of features, our detector detects any face, object, or vehicle in 15 fps when using 4 megapixel images with 95% accuracy on an Intel i7 2.8 GHz machine. 2011 Elsevier B.V. All rights reserved.