YAPC::EU 2018 Glasgow Update!

Task/Bitmap-Histogram/Python/bitmap-histogram.py

@@ -0,0 +1,42 @@
+from PIL import Image
+
+# Open the image
+image = Image.open("lena.jpg")
+# Get the width and height of the image
+width, height = image.size
+# Calculate the amount of pixels
+amount = width * height
+
+# Total amount of greyscale
+total = 0
+# B/W image
+bw_image = Image.new('L', (width, height), 0)
+# Bitmap image
+bm_image = Image.new('1', (width, height), 0)
+
+for h in range(0, height):
+    for w in range(0, width):
+        r, g, b = image.getpixel((w, h))
+
+        greyscale = int((r + g + b) / 3)
+        total += greyscale
+
+        bw_image.putpixel((w, h), gray_scale)
+
+# The average greyscale
+avg = total / amount
+
+black = 0
+white = 1
+
+for h in range(0, height):
+    for w in range(0, width):
+        v = bw_image.getpixel((w, h))
+
+        if v >= avg:
+            bm_image.putpixel((w, h), white)
+        else:
+            bm_image.putpixel((w, h), black)
+
+bw_image.show()
+bm_image.show()