pointextractorutil.py 文件源码

def simple_feature_size_filter(img, minradius, maxradius):
    feature_radius_min = minradius  | 1 # play with these to see show they affect highlighting of structures of various sizes
    feature_radius_max = maxradius | 1

    if 0:
        w = feature_radius_min*2 | 1
        blurred = cv2.GaussianBlur(img, (w, w), feature_radius_min)

        w = feature_radius_max*2 | 1
        veryblurred = cv2.GaussianBlur(img, (w, w), feature_radius_max)
    else:
        s = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (feature_radius_min, feature_radius_min))
        blurred = cv2.morphologyEx(img, cv2.MORPH_OPEN, s)

        s = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (feature_radius_max, feature_radius_max))
        veryblurred = cv2.morphologyEx(img, cv2.MORPH_OPEN, s)

    bandfiltered = blurred - np.minimum(veryblurred, blurred)
    return bandfiltered