Figure 4From: A collaborative adaptive Wiener filter for image restoration using a spatial-domain multi-patch correlation model Single-patch spatial correlation for Gaussian blur with a standard deviation of 1.5 pixels. (a) Cross-correlation \(r_{\bar d \bar f }(n_{1},n_{2})\) used to populate p. (b) Autocorrelation \(r_{\bar f \bar f }(n_{1},n_{2})\) used to populate R.Back to article page