cv2.face.mindistancepredictcollector（）出錯

Question

我已經安裝了帶有額外模塊的opencv 3.1.0，但是當我嘗試使用時

>>> s = cv2.face.MinDistancePredictCollector()

它返回一個錯誤

Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
s.MinDistancePredictCollector()
AttributeError: 'module' object has no attribute 'MinDistancePredictCollector'

我還檢查了文檔：

>>> help(cv2.face)
Help on module cv2.face in cv2:

NAME
    cv2.face

FILE
    (built-in)

FUNCTIONS
    StandardCollector_create(...)
    StandardCollector_create([, threshold]) -> retval

    createEigenFaceRecognizer(...)
    createEigenFaceRecognizer([, num_components[, threshold]]) -> retval

    createFisherFaceRecognizer(...)
    createFisherFaceRecognizer([, num_components[, threshold]]) -> retval

    createLBPHFaceRecognizer(...)
    createLBPHFaceRecognizer([, radius[, neighbors[, grid_x[, grid_y[,    threshold]]]]]) -> retval

我發現MinDistancePredictCollector()不存在。 那么我該怎么安裝呢？

Answer 1

我剛剛在Github上問了同樣的問題，它可以通過以下代碼解決：

if cv2.__version__ >= "3.1.0":
    collector = cv2.face.StandardCollector_create()
    recognizer.predict_collect(face_img, collector)
    conf = collector.getMinDist()
    pred = collector.getMinLabel()
else:     # older version
    pred, conf = recognizer.predict(face_img)