Basant Kumar

Learn More
This paper presents a new secure multiple text and image watermarking scheme on cover eye image using fusion of discrete wavelet transforms (DWT) and singular value decomposition (SVD) for Teleophthalmology. Secure Hash Algorithm (SHA-512) is used for generating hash corresponding to iris part of the cover digital eye image and this unique hash parameter is(More)
In this paper, the effects of different error correction codes on the robustness and imperceptibility of discrete wavelet transform and singular value decomposition based dual watermarking scheme is investigated. Text and image watermarks are embedded into cover radiological image for their potential application in secure and compact medical data(More)
This paper presents a secure spread-spectrum watermarking algorithm for digital images in discrete wavelet transform (DWT) domain. The algorithm is applied for embedding watermarks like patient identification/ source identification or doctors signature in binary image format into host digital radiological image for potential telemedicine applications.(More)
A kinetic spectrophotometric method for the determination of thiocyanate, based on its inhibitory effect on silver(I) catalyzed substitution of cyanide ion, by phenylhydrazine in hexacyanoferrate(II) is described. Thiocyanate ions form strong complexes with silver(I) catalyst which is used as the basis for its determination at trace level. The progress of(More)
In this paper, performance of different varieties of routing protocols is evaluated for Worldwide Interoperability for Microwave Access (WiMAX) [1] as part of feasibility study for its use in wireless telemedicine applications. Emergency telemedicine scenario of moving ambulance and mobile pedestrian, transmitting physiological patient data sending to(More)
Rapid advances in mobile and network technologies in recent years have opened new opportunities for new and innovative means of healthcare delivery. Implementation of telemedicine system using mobile/ wireless technologies in the time to come will exploit the recent advances in mobile communication technologies. Brief overview of current mobile(More)
This paper presents a spread-spectrum watermarking algorithm for embedding text watermark in to digital images in discrete wavelet transform (DWT) domain. The algorithm is applied for embedding text file represented in binary arrays using ASCII code into host digital radiological image for potential telemedicine applications. In order to enhance the(More)
This paper presents the development of improved structural similarity index (SSIM) quality assessment parameter for compressed medical images. The SSIM has been proved to be better objective quality assessment metric which exploits the structural similarity in the viewing field. In this paper, the SSIM quality index has been modified by achieving optimal(More)
This paper presents an energy efficient intrahospital telemedicine scenario for multi-patient cardiac monitoring using ZigBee network. A telemedicine scenario is proposed in which Electrocardiogram (ECG) signals of patients are acquired through ECG sensor nodes having transmission capability and these ECG signals are received by Personal Digital Assistant(More)
This paper discusses an improved technique for bandwidth-efficient and secure transmission of medical records over simulated orthogonal frequency division multiplexing (OFDM)-based Worldwide Interoperability for Microwave Access (WiMAX)/IEEE 802.16 physical layer. Medical data compaction along with security has been achieved by embedding electrocardiogram(More)