2 nouveaux défis

Les écailles du dragon....py

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+from PIL import Image
+from operator import xor
+
+input = "dungeons_portal_enc.png"
+
+input_image = Image.open(input)
+width, height = input_image.size
+
+sample_size = 50
+offset = 400
+# output_image = Image.new(input_image.mode, (int(sample_size), int(sample_size)))
+# for N in range(0,256):
+#     for x in range(offset, offset+sample_size):
+#         for y in range(offset, offset+sample_size):
+#             pixel = input_image.getpixel((x,y))
+#             if xor((x**3+y**7)%256, N)%256 == pixel:
+#                 output_image.putpixel((x-offset,y-offset), 0)
+#             else:
+#                 output_image.putpixel((x-offset,y-offset), 255)
+
+#    output_image.save(f"d_{N:04}.png")
+
+#==>N semble valoir 7
+
+N = 7
+output_image = Image.new(input_image.mode, (int(width), int(height)))
+
+for x in range(width):
+    for y in range(height):
+        pixel = input_image.getpixel((x,y))
+        if xor((x**3+y**7)%256, N)%256 == pixel:
+            output_image.putpixel((x,y), 0)
+        else:
+            output_image.putpixel((x,y), 255)
+
+output_image.show()