Add examples

Signed-off-by: Brad Miller <[email protected]>

Author: bnmnetp

double.py

@@ -0,0 +1,17 @@
+    
+def double(oldimage):
+    oldw = oldimage.getWidth()
+    oldh = oldimage.getHeight()
+
+    newim = EmptyImage(oldw*2,oldh*2)
+
+    for row in range(newim.getWidth()):   #// \label{lst:dib1}
+        for col in range(newim.getHeight()): #// \label{lst:dib2}
+            
+            originalCol = col//2  #// \label{lst:dib3}
+            originalRow = row//2  #// \label{lst:dib4}
+            oldpixel = oldimage.getPixel(originalCol,originalRow)
+
+            newim.setPixel(col,row,oldpixel)
+
+    return newim

grayscale.py

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+from cImage import *
+
+def grayPixel(p):
+    avg = (p.getRed() + p.getGreen() + p.getBlue()) // 3
+    return Pixel(avg,avg,avg)
+
+def makeGrayScale(imageFile):
+    myimagewindow = ImageWin("Image Processing",600,200)
+    oldimage = FileImage(imageFile)            
+    oldimage.draw(myimagewindow)
+
+    width = oldimage.getWidth()
+    height = oldimage.getHeight()
+    newim = EmptyImage(width,height)
+
+    for row in range(height):
+        for col in range(width):
+            originalPixel = oldimage.getPixel(col,row)
+            newPixel = grayPixel(originalPixel)
+            newim.setPixel(col,row,newPixel)
+
+    newim.setPosition(width+1,0)
+    newim.draw(myimagewindow)
+    myimagewindow.exitOnClick()
+
+makeGrayScale('lcastle.jpg')