Dr. R Rajkumar

@rnsit.ac.in

Associate Professor in Computer Science and Engineering (Cyber Security)
RNS Institute of Technology

Dr. R Rajkumar


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https://researchid.co/rajkumar.manju

RESEARCH, TEACHING, or OTHER INTERESTS

Computer Science, Computer Vision and Pattern Recognition, Artificial Intelligence, Computer Networks and Communications
4

Scopus Publications

41

Scholar Citations

4

Scholar h-index

1

Scholar i10-index

Scopus Publications

  • Detection of Plant Leaf Diseases using Machine Learning Techniques and CNN
    Kusuma R, R Rajkumar
    Proceedings of 6th International Conference on Intelligent Communication Technologies and Virtual Mobile Networks Icicv 2025, 2025
  • From Sky to Spectrum: Unveiling the Potential of 6G for UAV Communication
    R Rajkumar, Likitha R, Shreya Acharya, Manasvini Ramesh, Navya M Kedlaya
    Proceedings of 2025 International Conference on Computing for Sustainability and Intelligent Future Comp Sif 2025, 2025
    Unmanned Aerial Vehicles (UAVs) are becoming indispensable tools across civil, environmental, and military operations. This paper provides an overview of the classification of UAVs and their roles in enhancing operational efficiency and connectivity, particularly through the integration of 6G technology. It highlights the Distributed Edge-based Collaborative Knowledge- Sharing (DECKS) Architecture, which focuses on local data processing and the integration of AI for UAV traffic management. The discussion encompasses energy efficiency strategies, such as trajectory optimization and energy harvesting, as well as solutions for addressing security vulnerabilities, including blockchain technology. Furthermore, innovative communication methods, such as Device-to-Device (D2D) communication and Free Space Optical (FSO) wireless communication technologies, are explored. This study underscores the transformative potential of UAVs in shaping the future of connectivity and emphasizes the necessity for continued innovation in this field.
  • Development of retrieval system using color from multi-segments and shape features from images as combination
    *Mr. R Rajkumar, Dr.M.V. Sudhamani, and
    International Journal of Engineering and Advanced Technology, 2019
    The world of digital information has been generous to produce large data. The task of finding similar images in such a vast repository in real-time is very challenging. In this paper, Content Based Retrieval System is proposed to retrieve similar images with a novel approach of combining the image features like color and shape. The work includes extraction of color feature from images by dividing them into five significant portions, which emphasizes on center portion of an image where object may reside. This process is carried out and represented using color histograms. Next, shape features are extracted using Hu - moments for the entire image. Later, by combining these two features, similar image retrieval is done based on a query. Various trials of retrieval have been carried out with different categories and results are tabulated. These results are compared with existing works and shows high performance.
  • Content Based Image Retrieval using Heron Filtering, Fast BEMD and Gray level features
    R Rajkumar, M V Sudhamani
    1st IEEE International Conference on Advances in Information Technology Icait 2019 Proceedings, 2019
    In today’s world, large amount of digital image data is generated and stored in the repository. Finding for a particular image/s accurately in the repository poses the challenge. The aim of the proposed work is to search for relevant images from the repository based on user query image. In this work, the low-level features of images present in themselves such as edges and gray levels are used to retrieve the similar images. A novel approach is proposed in this paper by using a new filter applied on images called Heron mean filter, to smoothen the image, then combination of the edge features extracted by Fast and Adaptive Bidimensional Empirical Mode Decomposition (FABEMD) technique and gray level features through histogram. The experiments are conducted using Wang’s dataset of 10 categories of 100 images each. The tabulated results are obtained by using different similarity measures like Euclidean distance and Bhattacharya’s Co-efficient method. It is observed from the results that there is an improvement in the proposed system in terms of average precision and average recall, against the existing system.

RECENT SCHOLAR PUBLICATIONS

  • Detection of Plant Leaf Diseases using Machine Learning Techniques and CNN
    R Kusuma, R Rajkumar
    6th International Conference on Intelligent Communication Technologies and … , 2025
    2025
    Citations: 7
  • Plant leaf disease detection and classification using artificial intelligence techniques: A Review
    RR Kusuma R
    Indonesian Journal of Electrical Engineering and Computer Science 38 (2 … , 2025
    2025
    Citations: 8
  • From Sky to Spectrum: Unveiling the Potential of 6G for UAV Communication
    R Rajkumar, L R, S Acharya, M Ramesh, NM Kedlaya
    2025 International Conference on Computing for Sustainability and … , 2025
    2025
    Citations: 1
  • Artificial Intelligence in Cyber Security
    VKP Dr. Rajkumar R, Balaji D N, Keshava Reddy C
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Women Safety Device: A Technological Approach to Personal Security
    DRR Tanmayee P, Bhuvhan Chandra, Pattu Pogula Saranya
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Smart Attendance System using Facial Recognition
    YC Dr. R Rajkumar, Harshitha S, Priyadarshini S
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Sentiment Analysis Framework and Its Application in Geopolitical Scenarios
    RR Niharika Prasanna Kumar
    International Journal on Recent and Innovation Trends in Computing and … , 2023
    2023
  • Sentiment Analysis Framework and Its Application in Geopolitical Scenarios
    NP Kumar, R Rajkumar
    International Journal on Recent and Innovation Trends in Computing and … , 2023
    2023
  • Rice and Wheat Yield Prediction in India Using Decision Tree and Random Forest
    DRR Dr. B M Sagar, Dr.N K Cauvery, Dr.Padmashree T
    Computational Intelligence and Machine Learning 3 (2), 1-8 , 2022
    2022
    Citations: 7
  • Smart blind stick for detection and avoidance of obstacle
    AS Bharadwaj, J Ganavi, R Rajkumar
    International Journal of Innovations in Engineering Research and Technology … , 2021
    2021
    Citations: 2
  • Image Retrieval system using Residual Neural Network in a Distributed Environment
    MVS R Rajkumar
    International Journal of Recent Technology and Engineering 8 (6), 4597 - 4605 , 2020
    2020
    Citations: 4
  • Content based Image Retrieval System using Combination of Color and Shape Features, and Siamese Neural Network
    MVS R Rajkumar
    International Journal of Innovative Technology and Exploring Engineering 9 … , 2019
    2019
    Citations: 11
  • Content based image retrieval system using combination of color and shape features, and siamese neural network
    R Rajkumar, MV Sudhamani
    International Journal of Innovative Technology and Exploring Engineering 9 … , 2019
    2019
    Citations: 11
  • Retrieval of Images using Combination of Features as Color, Color Moments and Hu Moments
    DMVS R Rajkumar
    Advances in Image and Video Processing 7 (5), 9-21 , 2019
    2019
  • Development of Retrieval System using Color from Multi-Segments and Shape features from Images as Combination
    MVS R Rajkumar
    International Journal of Engineering and Advanced Technology 9 (1), 4410-4417 , 2019
    2019
    Citations: 1
  • Content Based Image Retrieval using Heron Filtering, Fast BEMD and Gray level features
    R Rajkumar, MV Sudhamani
    2019 1st International Conference on Advances in Information Technology … , 2019
    2019
  • Content Based Image Retrieval using Heron Filtering, Fast BEMD and Gray level features
    R Rajkumar, Dr. M V Sudhamani
    1st International Conference on Advances in Information Technology (ICAIT … , 2019
    2019
  • Crawler for Image Acquisition from World Wide Web
    R Rajkumar, D Sudhamani
    International Journal of Computer & Organization Trends (IJCOT) 7 (1), 28 - 33 , 2017
    2017
  • Crawler for Image Acquisition from World Wide Web
    Rajkumar R, Dr. M V Sudhamani
    International Journal of Computer & Organization Trends 7 (1), 28 - 33 , 2017
    2017
  • Semantic Annotations of Medical Images from Radiological Reports and Retrieval using CBIR Techniques – A Survey
    Rajkumar R, Dr. M V Sudhamani
    International Journal of Applied Engineering Research 10 (86), 464 - 470 , 2015
    2015

MOST CITED SCHOLAR PUBLICATIONS

  • Content based Image Retrieval System using Combination of Color and Shape Features, and Siamese Neural Network
    MVS R Rajkumar
    International Journal of Innovative Technology and Exploring Engineering 9 … , 2019
    2019
    Citations: 11
  • Content based image retrieval system using combination of color and shape features, and siamese neural network
    R Rajkumar, MV Sudhamani
    International Journal of Innovative Technology and Exploring Engineering 9 … , 2019
    2019
    Citations: 11
  • Plant leaf disease detection and classification using artificial intelligence techniques: A Review
    RR Kusuma R
    Indonesian Journal of Electrical Engineering and Computer Science 38 (2 … , 2025
    2025
    Citations: 8
  • Detection of Plant Leaf Diseases using Machine Learning Techniques and CNN
    R Kusuma, R Rajkumar
    6th International Conference on Intelligent Communication Technologies and … , 2025
    2025
    Citations: 7
  • Rice and Wheat Yield Prediction in India Using Decision Tree and Random Forest
    DRR Dr. B M Sagar, Dr.N K Cauvery, Dr.Padmashree T
    Computational Intelligence and Machine Learning 3 (2), 1-8 , 2022
    2022
    Citations: 7
  • Image Retrieval system using Residual Neural Network in a Distributed Environment
    MVS R Rajkumar
    International Journal of Recent Technology and Engineering 8 (6), 4597 - 4605 , 2020
    2020
    Citations: 4
  • Smart blind stick for detection and avoidance of obstacle
    AS Bharadwaj, J Ganavi, R Rajkumar
    International Journal of Innovations in Engineering Research and Technology … , 2021
    2021
    Citations: 2
  • From Sky to Spectrum: Unveiling the Potential of 6G for UAV Communication
    R Rajkumar, L R, S Acharya, M Ramesh, NM Kedlaya
    2025 International Conference on Computing for Sustainability and … , 2025
    2025
    Citations: 1
  • Development of Retrieval System using Color from Multi-Segments and Shape features from Images as Combination
    MVS R Rajkumar
    International Journal of Engineering and Advanced Technology 9 (1), 4410-4417 , 2019
    2019
    Citations: 1
  • Artificial Intelligence in Cyber Security
    VKP Dr. Rajkumar R, Balaji D N, Keshava Reddy C
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Women Safety Device: A Technological Approach to Personal Security
    DRR Tanmayee P, Bhuvhan Chandra, Pattu Pogula Saranya
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Smart Attendance System using Facial Recognition
    YC Dr. R Rajkumar, Harshitha S, Priyadarshini S
    International Journal of Advanced Research in Computer and Communication … , 2024
    2024
  • Sentiment Analysis Framework and Its Application in Geopolitical Scenarios
    RR Niharika Prasanna Kumar
    International Journal on Recent and Innovation Trends in Computing and … , 2023
    2023
  • Sentiment Analysis Framework and Its Application in Geopolitical Scenarios
    NP Kumar, R Rajkumar
    International Journal on Recent and Innovation Trends in Computing and … , 2023
    2023
  • Retrieval of Images using Combination of Features as Color, Color Moments and Hu Moments
    DMVS R Rajkumar
    Advances in Image and Video Processing 7 (5), 9-21 , 2019
    2019
  • Content Based Image Retrieval using Heron Filtering, Fast BEMD and Gray level features
    R Rajkumar, MV Sudhamani
    2019 1st International Conference on Advances in Information Technology … , 2019
    2019
  • Content Based Image Retrieval using Heron Filtering, Fast BEMD and Gray level features
    R Rajkumar, Dr. M V Sudhamani
    1st International Conference on Advances in Information Technology (ICAIT … , 2019
    2019
  • Crawler for Image Acquisition from World Wide Web
    R Rajkumar, D Sudhamani
    International Journal of Computer & Organization Trends (IJCOT) 7 (1), 28 - 33 , 2017
    2017
  • Crawler for Image Acquisition from World Wide Web
    Rajkumar R, Dr. M V Sudhamani
    International Journal of Computer & Organization Trends 7 (1), 28 - 33 , 2017
    2017
  • Semantic Annotations of Medical Images from Radiological Reports and Retrieval using CBIR Techniques – A Survey
    Rajkumar R, Dr. M V Sudhamani
    International Journal of Applied Engineering Research 10 (86), 464 - 470 , 2015
    2015