earticle

영어

This article provides a comparison between methods of images amplification with good results in the preservation of the structural similarity of the output image. This parameter is evaluated through the method SSIM (structural similarity index).One of the methods used for amplification is the combination of SWT (stationary wavelet transform) for the decomposition of the image, SVD (singular value decomposition) for conservation of high frequency content and DWT ( discrete Wavelet Transform ) for obtain the high resolution image. This method has report of good results [5]. Other amplification technique is proposed, RHPI (pulses interpolation constrained by high frequency)[9].The procedure RHPI uses a theoretical model of digital image registration and high frequency filters for the construction of the interpolation kernel for the amplification process. Finally, both methods are compared through SSIM structural similarity coefficient and PSNR parameters. The proposed method RHPI is a solution better than the SWT-SVD-DWT for the improvement in the conservation of SSIM and PSNR ratios for high rates of amplification.