ImProc ass1: Implemented part 1 of assignment.

improc/ass1/lowcontrast.py

-from pylab import clf, histogram, np, imshow
+from pylab import clf, histogram, imshow, imread, bar, diff, xlim, show, \
+    figure, amin, amax
+
+i = 1
+
+def show_hist(a):
+    global i
+    figure(i)
+    imshow(a, vmin=0, vmax=1)
+    h, be = histogram(a.flatten(), bins=40)
+
+    figure(i + 1)
+    bar(be[:-1], h, width=diff(be)[0])
+    xlim((0, 1))
+    i += 2
 
 def cst(f):
     fmin = amin(f)
     fmax = amax(f)
     return (f - fmin) / (fmax - fmin)
 
-a = np.load('lowcontrast.npy')
-clf()
-imshow(a, vmin=0, vmax=1)
-h, be = histogram(a.flatten(), bins=40)
+#a = imread('stinkbug.png')
+a = imread('lowcontrast.png')
 
+show_hist(a)
+show_hist(cst(a))
+show()