37 lines
820 B
Python
37 lines
820 B
Python
import cv2
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import numpy as np
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img = cv2.imread("../../data/cameraman.png")
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img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
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k1 = (1 / 25) * np.asarray([
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[1, 1, 1, 1, 1],
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[1, 1, 1, 1, 1],
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[1, 1, 1, 1, 1],
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[1, 1, 1, 1, 1],
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[1, 1, 1, 1, 1]
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], dtype=np.uint8)
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k2 = np.asarray([
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[1, 0, -1],
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[1, 0, -1],
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[1, 0, -1],
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], dtype=np.float32)
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k3 = np.asarray([
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[-1, -1, -1],
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[-1, 9, -1],
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[-1, -1, -1],
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], dtype=np.float32)
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img_k1 = cv2.filter2D(img, -1, k1)
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img_k2 = cv2.filter2D(img.astype(np.float32), -1, k2)
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img_k2 = np.maximum(img_k2, 0).astype(np.uint8)
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img_k3 = cv2.filter2D(img.astype(np.float32), -1, k3)
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img_k3 = np.maximum(img_k3, 0).astype(np.uint8)
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cv2.imshow("img", img)
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cv2.imshow("img_k1", img_k1)
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cv2.imshow("img_k2", img_k2)
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cv2.imshow("img_k3", img_k3)
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cv2. waitKey() |