Color Histogram Contouring: A New Training-Less Approach to Object Detection

Author:

Rabie Tamer1ORCID,Baziyad Mohammed2,Sani Radhwan1,Bonny Talal1,Fareh Raouf3ORCID

Affiliation:

1. Computer Engineering Department, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates

2. Research Institute of Sciences & Engineering, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates

3. Electrical Engineering Department, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates

Abstract

This paper introduces the Color Histogram Contouring (CHC) method, a new training-less approach to object detection that emphasizes the distinctive features in chrominance components. By building a chrominance-rich feature vector with a bin size of 1, the proposed CHC method exploits the precise information in chrominance features without increasing bin sizes, which can lead to false detections. This feature vector demonstrates invariance to lighting changes and is designed to mimic the opponent color axes used by the human visual system. The proposed CHC algorithm iterates over non-zero histogram bins of unique color features in the model, creating a feature vector for each, and emphasizes those matching in both the scene and model histograms. When both model and scene histograms for these unique features align, it ensures the presence of the model in the scene image. Extensive experiments across various scenarios show that the proposed CHC technique outperforms the benchmark training-less Swain and Ballard method and the algorithm of Viola and Jones. Additionally, a comparative experiment with the state-of-the-art You Only Look Once (YOLO) technique reveals that the proposed CHC technique surpasses YOLO in scenarios with limited training data, highlighting a significant advancement in training-less object detection. This approach offers a valuable addition to computer vision, providing an effective training-less solution for real-time autonomous robot localization and mapping in unknown environments.

Publisher

MDPI AG

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