Паличев Иван

filter.py

@@ -1,28 +1,38 @@
 from PIL import Image
 import numpy as np
-img = Image.open("img2.jpg")
-arr = np.array(img)
-a = len(arr)
-a1 = len(arr[1])
-i = 0
-while i < a - 11:
-    j = 0
-    while j < a1 - 11:
-        s = 0
-        for n in range(i, i + 10):
-            for n1 in range(j, j + 10):
-                n1 = arr[n][n1][0]
-                n2 = arr[n][n1][1]
-                n3 = arr[n][n1][2]
-                M = n1 + n2 + n3
-                s += M
-        s = int(s // 100)
-        for n in range(i, i + 10):
-            for n1 in range(j, j + 10):
-                arr[n][n1][0] = int(s // 50) * 50
-                arr[n][n1][1] = int(s // 50) * 50
-                arr[n][n1][2] = int(s // 50) * 50
-        j = j + 10
-    i = i + 10
-res = Image.fromarray(arr)
-res.save('res.jpg')
+
+
+def main():
+    url = input("Название изображения: ")
+    name = input("Имя результата обработки: ")
+    img = Image.open(url)
+    pixels = np.array(img)
+    mosaic_size = int(input("Размер мозаики: "))
+    color_amount = int(input("Кол-во оттенков серого: "))
+    pixels = process_pixels(pixels, mosaic_size, color_amount)
+    res = Image.fromarray(pixels)
+    res.save(name)
+
+
+def process_pixels(pixels, mosaic_size, color_amount):
+    height = len(pixels)
+    width = len(pixels[1])
+    gray_step = 255 // (color_amount - 1)
+    for x in range(0, width, mosaic_size):
+        for y in range(0, height, mosaic_size):
+            average = find_average(pixels, x, y, mosaic_size)
+            pixels = change_pixels(pixels, x, y, average, mosaic_size, gray_step)
+
+    return pixels
+
+
+def find_average(pixels, x, y, length):
+    return np.average(pixels[x:x + length, y:y + length])
+
+
+def change_pixels(pixels, x, y, average, length, gray_step):
+    pixels[x:x + length, y:y + length] = int(average // gray_step) * gray_step
+    return pixels
+
+
+main()