P. V. Nagarjuna

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In this manuscript stationary wavelet transform based digital image watermarking algorithm is proposed. The proposed algorithm combines the information of low frequency SWT coefficients and the watermark image without any change in the information present in the original image. Key is combination and is used to extract the watermark. The proposed method(More)
Aiming further to reduce its switching losses, an appropriate discontinuous modulation scheme is proposed and studied here in detail to doubly ensure that maximal reduction of commutations is achieved. With an appropriately designed control scheme had incorporated with nine-switch converter is shown to favorably raise the overall power quality and voltage(More)
Now-a-days, demand for electric power has shown steady but geographically uneven growth.The wheeling of the available energy through existing long ac lines to load centers has a certain upper limit due to stability considerations. Thermal limit is the major limit to be considered while increasing loadability of existing EHV long transmission lines. Thus,(More)
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