S. Harshavardhan

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Many state-of-the-art techniques for estimating glottal closure instants (GCIs) use linear prediction residual (LPR) in one way or another. In this paper, subband analysis of LPR is proposed to estimate the GCIs. A composite signal is derived as the sum of the envelopes of the subband components of the LPR signal. Appropriately chosen peaks of the composite(More)
The present paper addresses a single image super resolution reconstruction approach based on sparse representation of image patches. The proposed reconstruction process enforces a better sparsity solution which is guided by the sparse prior from the L<sub>1</sub> norm optimization process. In the optimization process, an efficient feature extraction(More)
Super-resolution (SR) reconstruction using iterative back projection (IBP) is a well-known and computationally efficient method for the enhancement of spatial resolution of an image. However, IBP algorithm has some limits in the performance like ringing artifacts in the strong edge area of an image. In this paper, we propose an improved algorithm that(More)
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