Chandan Chakraborty

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In this paper the aim of the study is to improve the dynamic performance of a shunt-type active power filter. The predictive and adaptive properties of artificial neural networks (ANNs) are used for fast estimation of the compensating current. The dynamics of the dc-link voltage is utilized in a predictive controller to generate the first estimate followed(More)
This paper introduces a systematic approach for segmentation of retinal blood vessels towards the diagnosis of proliferative diabetic retinopathy (PDR) from digital fundus images. Here, 2D-Match (Gabor) filters are used on digital fundus images in which the vessels are enhanced by contrast-limited adaptive histogram equalization (CLAHE). A double sided(More)
The objective of this paper is to introduce a computer assisted prediction of malaria infection particularly Plasmodium vivax based on the morphological and textural information. Here erythrocytes have been segmented from light microscopic images of peripheral blood smear using marker controlled watershed followed by pre-processing. Thereafter texture and(More)
The aim of this paper is to address the development of computer assisted malaria parasite characterization and classification using machine learning approach based on light microscopic images of peripheral blood smears. In doing this, microscopic image acquisition from stained slides, illumination correction and noise reduction, erythrocyte segmentation,(More)
This paper presents two simple and very useful techniques for the efficiency optimization of the indirect vector-controlled induction motor drives. In the synchronously rotating reference frame the flux-producing current is controlled until the power at the dc link is minimum. Of the two techniques, the first method controls the flux-producing current in a(More)
Anaemia is one of the most common diseases in the world population. Primarily anaemia is identified based on haemoglobin level; and then microscopically examination of peripheral blood smear is required for characterizing and confirmation of anaemic stages. In conventional approach, experts visually characterize abnormality present in the erythrocytes under(More)
PAPERS Multiphase Systems Parallel-Connected Shunt Hybrid Active Power Filters Operating at Different Switching Frequencies for Improved Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Bhattacharya, C. Chakraborty, and S. Bhattacharya 4007 Simulation of the Electromagnetic Response Characteristic of an Inductively Filtered(More)
The objective of this paper is to introduce a fuzzy distance measure for generalized fuzzy numbers (GFN). It computes the fuzzy distance between two generalized fuzzy numbers and also LR-type fuzzy numbers. The metric properties of the proposed measure are also studied. Some numerical examples have been considered here for applying the proposed fuzzy(More)