我有下面的影像來分析和提取其中的孔隙率（黑點）。
我的問題是我的代碼可能會出現劃痕（拋光橫截面的缺陷）。我正在尋找一種去除劃痕的方法。
我嘗試了修復（
結果
您還可以選擇使用具有閾值的輪廓區域過濾來過濾掉大/小點
import cv2
# Load image, grayscale, Gaussian blur, Otsu's threshold
image = cv2.imread("1.png")
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
blur = cv2.GaussianBlur(gray, (5,5), 0)
thresh = cv2.threshold(blur, 0, 255, cv2.THRESH_BINARY_INV cv2.THRESH_OTSU)[1]
# OPTIONAL to filter out small/large dots using contour area filtering
# Adjust the area to only keep larger dots
'''
DOT_AREA = 10
cnts = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cnts = cnts[0] if len(cnts) == 2 else cnts[1]
for c in cnts:
area = cv2.contourArea(c)
if area < DOT_AREA:
cv2.drawContours(thresh, [c], -1, 0, -1)
'''
# Bitwise_and to extract dots
result = cv2.bitwise_and(image, image, mask=thresh)
result[thresh==0] = 255
cv2.imshow("thresh", thresh)
cv2.imshow("result", result)
cv2.waitKey()
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