Initial commit with project files

3_Signalorientierte_Bildverarbeitung/ü3/l_c.py

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+import cv2
+import numpy as np
+
+img = cv2.imread("../../data/teppich.png", cv2.IMREAD_GRAYSCALE)
+
+
+''' FFT '''
+IMG = np.fft.fft2(img)
+MAGNITUDE = np.abs(IMG)
+ANGLE = np.angle(IMG)
+
+''' Filter out frequencies '''
+print("Number of frequencies:", MAGNITUDE.shape)
+MAGNITUDE[0:150, 0:150] = 0
+
+
+''' IFFT '''
+IMG = MAGNITUDE * np.exp(1j * ANGLE)
+filtered_image = np.fft.ifft2(IMG).astype(np.float32)
+
+''' Bild anzeigen '''
+cv2.imshow("img", img)
+cv2.imshow("filtered", filtered_image / np.max(filtered_image))
+
+cv2.waitKey(0)