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Różnice między wybraną wersją a wersją aktualną.

--- notatki:autofocus [2025/05/21 20:10] – administrator
+++ notatki:autofocus [2025/05/21 20:44] (aktualna) – administrator
@@ Linia 45: / Linia 45: @@
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-====== Wyostrzanie poprzez wykrycie kontrast (pasywne) ======
+====== Wyostrzanie poprzez kontrast (pasywne) ======
+Skrypt w pythonie obliczający sumę wszystkich różnic pomiędzy parami pikseli w obrazku.
+<code python get_diff_pixel.py>
+from PIL import Image
+def main():
+    img = Image.open("greyscale.png").convert("L")
+    pixels = list(img.getdata())
+    n = len(pixels)
+    total = 0
+    for i in range(n):
+        pi = pixels[i]
+        for j in range(i + 1, n):
+            total += abs(pi - pixels[j])
+    print(f"Pixels read: {n}")
+    print(f"Sum of abs diffs over all pairs: {total}")
+if __name__ == "__main__":
+    main()
+</code>
+===== Wyniki dla obrazka wyostrzonego =====
+{{.:pasted:20250521-204417.png}}
+<code>
+Pixels read: 11970
+Sum of abs diffs over all pairs: 4496510654
+</code>
+===== Wyniki dla obrazka niewyostrzonego =====
+{{.:pasted:20250521-204252.png}}
+<code>
+Pixels read: 11970
+Sum of abs diffs over all pairs: 3223391491
+</code>

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