CODEWITHSUNDEEP
pythonface-detectionface-recognitionkeras-vggface
Safoo Ra
Safoo Ra

Reputation: 21

ValueError: Input 0 is incompatible with layer vggface_resnet50: expected shape=(None, 224, 224, 3), found shape=(None, 1, 224, 224, 3)

I want to use the code from https://morioh.com/p/a07857cbc76d to match faces from chokepoint dataset for my face project, I extracted the faces and want to use VGGface and cosine to match them, but got this error, would you please help me?

ValueError: in user code:

/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/training.py:1478 predict_function  *
    return step_function(self, iterator)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/training.py:1468 step_function  **
    outputs = model.distribute_strategy.run(run_step, args=(data,))
/usr/local/lib/python3.6/dist-packages/tensorflow/python/distribute/distribute_lib.py:1259 run
    return self._extended.call_for_each_replica(fn, args=args, kwargs=kwargs)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/distribute/distribute_lib.py:2730 call_for_each_replica
    return self._call_for_each_replica(fn, args, kwargs)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/distribute/distribute_lib.py:3417 _call_for_each_replica
    return fn(*args, **kwargs)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/training.py:1461 run_step  **
    outputs = model.predict_step(data)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/training.py:1434 predict_step
    return self(x, training=False)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/base_layer.py:998 __call__
    input_spec.assert_input_compatibility(self.input_spec, inputs, self.name)
/usr/local/lib/python3.6/dist-packages/tensorflow/python/keras/engine/input_spec.py:274 assert_input_compatibility
    ', found shape=' + display_shape(x.shape))

ValueError: Input 0 is incompatible with layer vggface_resnet50: expected shape=(None, 224, 224, 3), found shape=(None, 1, 224, 224, 3)

here is the code for extract faces:

def extract_face_from_image(image_path, required_size=(224, 224)):
    image = plt.imread(image_path)
    detector = MTCNN()
    faces = detector.detect_faces(image)
    face_images = []
    for face in faces:
        x1, y1, width, height = face['box']
        x2, y2 = x1 + width, y1 + height
        face_boundary = image[y1:y2, x1:x2]
        face_image = Image.fromarray(face_boundary)
        face_image = face_image.resize(required_size)
        face_array = asarray(face_image)
        face_images.append(face_array)
    return face_images
extracted_face = extract_face_from_image('/content/301.jpg')
plt.imshow(extracted_face[0])
plt.show()

and this the code for match faces:

def get_model_scores(faces):
    samples = asarray(faces, 'float32')
    samples = preprocess_input(samples, version=2)
    model = VGGFace(model='resnet50', include_top=False, input_shape=(224, 224, 3), pooling='avg')
    return model.predict(samples)
faces = [extract_face_from_image(image_path) for image_path in ['/content/125.jpg', 
'/content/126.jpg']]
model_scores = get_model_scores(faces)
if cosine(model_scores[0], model_scores[1]) <= 0.4:
    print("Faces Matched")

Upvotes: 2

Views: 1369

Answers (1)

H.Sarxha
H.Sarxha

Reputation: 172

Old question but changing the extract_face_from_image to this:

def extract_face_from_image(image_path, required_size=(224, 224)):
    # load image and detect faces
    image = plt.imread(image_path)

    detector = MTCNN()
    faces = detector.detect_faces(image)

    # extract the bounding box from the requested face
    x1, y1, width, height = faces[0]['box']
    x2, y2 = x1 + width, y1 + height

    # extract the face
    face_boundary = image[y1:y2, x1:x2]

    image = cv2.resize(face_boundary, required_size)

    return image

worked perfectly fine.

Upvotes: 1

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