Computer Engineering, Artificial Intelligence, Hardware and Architecture, Computer Networks and Communications
3
Scopus Publications
Scopus Publications
Hair Artifact Removal in Dermoscopic Images using DWT and VAE-GAN Suresh M, Sudarsan M, Shirly Ritika C, Mithanraj S, Dinesh Kumar V Proceedings of 2nd International Conference on Visual Analytics and Data Visualization Icvadv 2026, 2026 The rising prevalence of melanoma and nonmelanoma conditions has made skin-related malignancies one of today's most pressing healthcare challenges. During diagnosis, dermoscopic image analysis is often hindered by hair and shadows that obscure critical lesion details. We present a Variational Autoencoder-Generative Adversarial Network (VAE-GAN) framework enhanced with the Discrete Wavelet Transform (DWT) for effective hair removal in dermoscopic images. The proposed encoderdecoder framework integrates DWT-based multiresolution analysis to effectively capture and distinguish authentic lesion textures from reconstructed components using adversarial learning. This approach improves the visual quality of dermoscopic images while retaining important fine-grained structural information. The training process is guided by a combined loss function consisting of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{L 1}$</tex> loss, total variation loss, and structural similarity (SSIM), which helps in achieving precise pixel reconstruction and maintaining structural consistency. For experimental validation, 5,000 dermoscopic images from the HAM10000 dataset were used for both training and evaluation.
Efficient Online Big Data Stream Clustering Using Dual Interactive Wasserstein Generative Adversarial Network Suresh Matheswaran, Nandhagopal Nachimuthu, G. Prakash International Journal on Artificial Intelligence Tools, 2024 Numerous real-world applications, such as online gaming, video streaming, and internet calls are streamed enormous volumes of data. So it is important to quickly process data streams in real-time. Data clustering methods are historically effective and efficient in extracting data from large datasets. Typically, they are ineffective for online data stream clustering. Therefore, an efficient online big data stream clustering using dual interactive Wasserstein generative adversarial network (OBDSC-DI-WGAN) is proposed in this paper. The proposed method consists of three phases: data initialization, online clustering, offline clustering. Initially, the input data are taken from Forest Cover Type dataset. During initialization phase, the dimensions of the input data can be reduced using kernel co-relation approach. After the initialization, the dimension-reduced data are fed to the dual interactive Wasserstein generative adversarial network (DI-WGAN) to accomplish efficient data stream clustering. Then the data enter the selected grid during the stage of online clustering. Afterward, the data stream is activated through the stage of online clustering and the data are activated in the stage of offline depending upon user request. The grid is regarded as a virtual data point in its geometric center during the offline phase. The density radius along cluster centers is determined under Billiards-inspired optimization algorithm. Finally, the clustering outcome is derived from optimum density radius. The proposed technique is activated in MATLAB, and its efficiency is analyzed under some performance metrics, such as accuracy, dice coefficient, purity, sensitivity, specificity, precision, processing time and jacquard coefficient. The proposed method provides better accuracy 27.5%, 10.32% and 16.65%, better precision 30.93%, 11.14% and 15.3% compared with existing methods, like fast grid-based clustering approach for hybrid data stream (FGCH-CCFD-OBDSC), optimized deep autoencoder including CNN for non-stationary environments surveillance data streams (DAE-CNN-OBDSC) and asynchronous dual-pipeline deep learning framework for online data stream classification (1D-CNN-OBDSC) respectively.
AN EFFICIENT ONLINE BIG DATA STREAM CLUSTERING USING HYBRID GRID-BASED SOFT CLUSTERING APPROACHES Journal of Environmental Protection and Ecology, 2024
RECENT SCHOLAR PUBLICATIONS
Efficient Online Big Data Stream Clustering Using Dual Interactive Wasserstein Generative Adversarial Network S Matheswaran, N Nachimuthu, G Prakash International Journal on Artificial Intelligence Tools 33 (05), 2450009 , 2024 2024
MOST CITED SCHOLAR PUBLICATIONS
Efficient Online Big Data Stream Clustering Using Dual Interactive Wasserstein Generative Adversarial Network S Matheswaran, N Nachimuthu, G Prakash International Journal on Artificial Intelligence Tools 33 (05), 2450009 , 2024 2024
