2023-11-30 22:32:06 +00:00
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import cv2
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import numpy as np
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class Ocv:
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@classmethod
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def compare_images(cls, lhd: np.ndarray, rhd: np.ndarray) -> float:
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res = cv2.matchTemplate(lhd, rhd, cv2.TM_CCOEFF_NORMED)
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_, correlation, _, _ = cv2.minMaxLoc(res)
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return correlation
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@classmethod
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def draw_contours(cls, lhd: np.ndarray, rhd: np.ndarray) -> np.ndarray:
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view = rhd.copy()
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lhd = cv2.cvtColor(lhd, cv2.COLOR_BGRA2GRAY)
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_, thresh = cv2.threshold(lhd, 0, 255, cv2.THRESH_BINARY_INV | cv2.THRESH_OTSU)
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contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
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cv2.drawContours(view, contours, -1, (0, 0, 255), 1)
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rhd = cv2.cvtColor(rhd, cv2.COLOR_BGRA2GRAY)
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_, thresh = cv2.threshold(rhd, 0, 255, cv2.THRESH_BINARY_INV | cv2.THRESH_OTSU)
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contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
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cv2.drawContours(view, contours, -1, (0, 255, 0), 1)
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return view
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