BasePythonDataLayer.py 文件源码

def set_mean(self):
        if self._mean_file:
            if type(self._mean_file) is str:
                # read image mean from file
                try:
                    # if it is a pickle file
                    self._mean = np.load(self._mean_file)
                except (IOError):
                    blob = caffe_pb2.BlobProto()
                    blob_str = open(self._mean_file, 'rb').read()
                    blob.ParseFromString(blob_str)
                    self._mean = np.array(caffe.io.blobproto_to_array(blob))[0]
            else:
                self._mean = self._mean_file
                self._mean = np.array(self._mean)
        else:
            self._mean = None