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samples/python/tutorial_code/ImgTrans/LaPlace/laplace_demo.py
59 строк
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tribta
Fix Python code, for the tutorial_laplace_operator, to get the same result between the Cpp, Java and Python
23 июн 2019, 20:03
23 июн 2019, 20:03
e8283f9
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""" @file laplace_demo.py @brief Sample code showing how to detect edges using the Laplace operator """ import sys import cv2 as cv def main(argv): # [variables] # Declare the variables we are going to use ddepth = cv.CV_16S kernel_size = 3 window_name = "Laplace Demo" # [variables] # [load] imageName = argv[0] if len(argv) > 0 else 'lena.jpg' src = cv.imread(cv.samples.findFile(imageName), cv.IMREAD_COLOR) # Load an image # Check if image is loaded fine if src is None: print ('Error opening image') print ('Program Arguments: [image_name -- default lena.jpg]') return -1 # [load] # [reduce_noise] # Remove noise by blurring with a Gaussian filter src = cv.GaussianBlur(src, (3, 3), 0) # [reduce_noise] # [convert_to_gray] # Convert the image to grayscale src_gray = cv.cvtColor(src, cv.COLOR_BGR2GRAY) # [convert_to_gray] # Create Window cv.namedWindow(window_name, cv.WINDOW_AUTOSIZE) # [laplacian] # Apply Laplace function dst = cv.Laplacian(src_gray, ddepth, ksize=kernel_size) # [laplacian] # [convert] # converting back to uint8 abs_dst = cv.convertScaleAbs(dst) # [convert] # [display] cv.imshow(window_name, abs_dst) cv.waitKey(0) # [display] return 0 if __name__ == "__main__": main(sys.argv[1:])