A fast orientation estimation approach of natural images
Version 2 2024-06-03, 22:35Version 2 2024-06-03, 22:35
Version 1 2017-02-01, 16:49Version 1 2017-02-01, 16:49
journal contribution
posted on 2024-06-03, 22:35authored byZ Cao, X Liu, N Gu, S Nahavandi, D Xu, C Zhou, M Tan
This correspondence paper proposes a fast orientation estimation approach of natural images without the help of semantic information. Different from traditional low-level features, our low-level features are extracted inspired by the biological simple cells of the visual cortex. Two approximated receptive fields to mimic the biological cells are presented, and a local rotation operator is introduced to determine the optimal output and local orientation corresponding to an image position, which serve as the low-level feature employed in this paper. To generate the low-level features, a bisection method is applied to the first derivative of the model of receptive fields. Moreover, the feature screener is introduced to eliminate too much useless low-level features, which will speed up the processing time. After all the valuable low-level features are combined, the overall image orientation is estimated. The proposed approach possesses several features suitable for real-time applications. First, it avoids the tedious training procedure of some conventional methods. Second, no specific reference such as the horizon is assumed and no a priori knowledge of image is required. The proposed approach achieves a real-time orientation estimation of natural images using only low-level features with a satisfactory resolution. The effectiveness of our proposed approach is verified on real images with complex scenes and strong noises.
History
Journal
IEEE transactions on systems, man and cybernetics: systems