2019-12-09 02:29:01 +00:00
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"""
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Implemented an algorithm using opencv to convert a colored image into its negative
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"""
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2020-07-06 07:44:19 +00:00
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from cv2 import destroyAllWindows, imread, imshow, waitKey
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2019-12-09 02:29:01 +00:00
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def convert_to_negative(img):
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# getting number of pixels in the image
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pixel_h, pixel_v = img.shape[0], img.shape[1]
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# converting each pixel's color to its negative
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for i in range(pixel_h):
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for j in range(pixel_v):
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img[i][j] = [255, 255, 255] - img[i][j]
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return img
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if __name__ == "__main__":
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# read original image
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img = imread("image_data/lena.jpg", 1)
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# convert to its negative
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neg = convert_to_negative(img)
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# show result image
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imshow("negative of original image", img)
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waitKey(0)
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destroyAllWindows()
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