Resolution enhancement using DWT and SWT by Fusion techniques with watermarking

Kumar, Karanam Kishore; Subbareddy, Thadigotla Venkata; Sugapriya, K; Elamaran, V.

doi:10.1109/iccic.2014.7238554

Cited by 1 publication

(1 citation statement)

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“…The fused image is generated by applying inverse stationary wavelet transform on the fused coefficients map. Many wavelet transform based image fusion method has been presented in the literature which find wavelet transform applicable into many areas like medical diagnosis, image analysis and resolution enhancement [9]- [15]. Finally, Clustering technique is applied on the output of image fusion which classifies the changed and unchanged areas into different clusters.…”

Section: Introductionmentioning

confidence: 99%

Change Detection from Remotely Sensed Images Based on Stationary Wavelet Transform

Sharma¹,

Gulati²

2017

IJECE

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The major issue of concern in change detection process is the accuracy of the algorithm to recover changed and unchanged pixels. The fusion rules presented in the existing methods could not integrate the features accurately which results in more number of false alarms and speckle noise in the output image. This paper proposes an algorithm which fuses two multi-temporal images through proposed set of fusion rules in stationary wavelet transform. In the first step, the source images obtained from log ratio and mean ratio operators are decomposed into three high frequency sub-bands and one low frequency sub-band by stationary wavelet transform. Then, proposed fusion rules for low and high frequency sub-bands are applied on the coefficient maps to get the fused wavelet coefficients map. The fused image is recovered by applying the inverse stationary wavelet transform (ISWT) on the fused coefficient map. Finally, the changed and unchanged areas are classified using Fuzzy c means clustering. The performance of the algorithm is calculated in terms of percentage correct classification (PCC), overall error (OE) and Kappa coefficient (K c ). The qualitative and quantitative results prove that the proposed method offers least error, highest accuracy and Kappa value as compare to its preexistences.

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Section: Introductionmentioning

confidence: 99%