OpenCV中二值化閾值的設置是根據圖像的特性和需求來確定的。一般來說,可以通過以下幾種方法來確定二值化閾值:
ret,thresh = cv2.threshold(img,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU)
ret,thresh = cv2.threshold(img,127,255,cv2.THRESH_BINARY)
thresh = cv2.adaptiveThreshold(img,255,cv2.ADAPTIVE_THRESH_MEAN_C,cv2.THRESH_BINARY,11,2)
根據具體的應用場景和圖像特性,可以選擇合適的二值化方法和參數來進行閾值的設置。