From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 125/CH6/EX6.9/Fig6_9.sce                           |  41 +++++++++++++++++++++
 .../Fig6_9_Degraded_NoiseImage_Restoration.JPG     | Bin 0 -> 43989 bytes
 2 files changed, 41 insertions(+)
 create mode 100755 125/CH6/EX6.9/Fig6_9.sce
 create mode 100755 125/CH6/EX6.9/Fig6_9_Degraded_NoiseImage_Restoration.JPG

(limited to '125/CH6/EX6.9')

diff --git a/125/CH6/EX6.9/Fig6_9.sce b/125/CH6/EX6.9/Fig6_9.sce
new file mode 100755
index 000000000..b6acb5a48
--- /dev/null
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@@ -0,0 +1,41 @@
+//Caption:Scilab code performs Pseudo inverse filtering 
+//Degrade the image by means of a known blur and white noise
+//The image is degraded as well as corrupted by noise
+//Apply Pseudo inverse filter to restore the  image
+//Fig6.9
+//page 333
+clc;
+close;
+x =imread('E:\DIP_JAYARAMAN\Chapter6\flower2.jpg');
+x=double(rgb2gray(x));
+[M N]=size(x);
+h = zeros(M,N);
+for i = 1:11
+    for j = 1:11
+        h(i,j) = 1/121;
+    end
+end
+mask_b = ones(11,11)/121;
+[m1,n1] = size(mask_b);
+Thr_Freq = 0.2;
+freqx = fft2d(x); //Fourier transform of input image
+freqh = fft2d(h);//Fourier transform of degradation
+y = real(ifft2d(freqh.*freqx))+25*rand(M,N,'normal');
+freqy = fft2d(y);
+psf=zeros(M,N); 
+psf(M/2+1-(m1-1)/2:M/2+1+(m1-1)/2,N/2+1-(n1-1)/2:N/2+1+(n1-1)/2) = mask_b;
+psf = fftshift(psf);
+freq_res = fft2d(psf);
+Inv_filt = freq_res./((abs(freq_res)).^2+Thr_Freq);
+z = real(ifft2d(freqy.*Inv_filt));
+x = uint8(x);
+y = uint8(y);
+z = uint8(z)
+ShowImage(x,'Original Image')
+title('Original Image')
+figure
+ShowImage(y,'Degraded+noise Image')
+title('Degraded+noise Image')
+figure
+ShowImage(z,'Restored Image')
+title('Restored Image')
\ No newline at end of file
diff --git a/125/CH6/EX6.9/Fig6_9_Degraded_NoiseImage_Restoration.JPG b/125/CH6/EX6.9/Fig6_9_Degraded_NoiseImage_Restoration.JPG
new file mode 100755
index 000000000..e49026e1e
Binary files /dev/null and b/125/CH6/EX6.9/Fig6_9_Degraded_NoiseImage_Restoration.JPG differ
-- 
cgit