Cognitive IoT Vision System Using Weighted Guided Harris Corner Feature Detector for Visually Impaired People

Manoranjitham Rajendran, Punitha Stephan, Thompson Stephan, Saurabh Agarwal and Hyunsung Kim
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Manoranjitham Rajendran: Department of Computer Science and Engineering, Karunya Institute of Technology and Sciences, Coimbatore 641114, India
Punitha Stephan: Department of Computer Science and Engineering, Karunya Institute of Technology and Sciences, Coimbatore 641114, India
Thompson Stephan: Department of Computer Science and Engineering, Faculty of Engineering and Technology, M.S. Ramaiah University of Applied Sciences, Bengaluru 560054, India
Saurabh Agarwal: Department of Computer Science and Engineering, Amity School of Engineering & Technology, Amity University Uttar Pradesh, Noida 201313, India
Hyunsung Kim: School of Computer Science, Kyungil University, Gyeongsan 38424, Korea

Sustainability, 2022, vol. 14, issue 15, 1-22

Abstract: India has an estimated 12 million visually impaired people and is home to the world’s largest number in any country. Smart walking stick devices use various technologies including machine vision and different sensors for improving the safe movement of visually impaired persons. In machine vision, accurately recognizing an object that is near to them is still a challenging task. This paper provides a system to enable safe navigation and guidance for visually impaired people by implementing an object recognition module in the smart walking stick that uses a local feature extraction method to recognize an object under different image transformations. To provide stability and robustness, the Weighted Guided Harris Corner Feature Detector (WGHCFD) method is proposed to extract feature points from the image. WGHCFD discriminates image features competently and is suitable for different real-world conditions. The WGHCFD method evaluates the most popular Oxford benchmark datasets, and it achieves greater repeatability and matching score than existing feature detectors. In addition, the proposed WGHCFD method is tested with a smart stick and achieves 99.8% recognition rate under different transformation conditions for the safe navigation of visually impaired people.

Keywords: smart walking stick; weighted guided image filter; object recognition; feature extraction; Weighted Guided Harris Corner Feature Detector; visually impaired (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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