Two-dimensional discrete wavelet transform image transformed series is greater than or equal to 3, and then processing thresholding (threshold of about 10 or so), then statistical coefficient in the number (expressed as a percentage) and to reconstruct the final calculation reconstructed image of the peak signal-to-noise ratio (PSNR).

DWT2D\adju.m
.....\convolution.m
.....\data_separate.m
.....\debug.m
.....\downsapling.m
.....\DWT_2D.m
.....\DWT_2D_L1.m
.....\extension.m
.....\getPSNR.m
.....\get_mean_var.m
.....\IDWT_2D.m
.....\IDWT_2D_L1.m
.....\LENA.BMP
.....\re_convolution.m
.....\run_dwt.fig
.....\run_dwt.m
.....\thresholding.m
.....\upsapling.m
.....\usage.fig
.....\usage.m
.....\实验1要求.docx
DWT2D

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