diff --git a/examples/01-0001-cropped-edge-detection.png b/examples/01-0001-cropped-edge-detection.png
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Binary files /dev/null and b/examples/01-0001-cropped-edge-detection.png differ
diff --git a/examples/edge_detection.py b/examples/edge_detection.py
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+++ b/examples/edge_detection.py
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+# MONOCHROME EDGE DETECTION
+
+import cv2 as cv
+import numpy as np
+
+file = '01-0001-cropped.png'
+file_name = file.split(".")[0]
+file_ext = file.split(".")[1]
+
+img = cv.imread(file)
+
+img = cv.cvtColor(img, cv.COLOR_BGR2GRAY)
+
+kernel = np.array([
+    [-1, -1, -1],
+    [-1, 8, -1],
+    [-1, -1, -1],
+])
+img = cv.filter2D(src=img, ddepth=-1, kernel=kernel)
+
+cv.imwrite(f'{file_name}-edge-detection.{file_ext}', img)