检测树莓pi零时出现暗流错误:未定义符号：_ZN6google8protobuf8internal26fixed_address_empty_stringE

Question

目前，我正在尝试在安装了摄像头的RPi zero上运行darkflow。

使用darkflow的检测有点慢，但在pi 3上工作得很好。(尽管编译opencv3花了几个小时)，所以我认为它在pi 0上类似，但事实并非如此。

我设法安装了opencv 3.3.1 (花了一天的时间构建)和tensorflow (使用

tensorflow-1.4.0-cp35-none-any.whl从tensorflow-1.4.0-cp34-none any.whl重命名)，它们工作得很好(有点...由于python版本不兼容，tensorflow显示了一些警告--但根据Pete Warden的博客：https://petewarden.com/2017/08/20/cross-compiling-tensorflow-for-the-raspberry-pi )

使用构建的暗流

python setup.py build_ext --inplace

没有任何问题。(实际上是python3，因为我和python3在venv上)

但当我尝试使用以下命令检查检测是否有效时：

./flow --imgdir=sample_img --model cfg/tiny-yolo-voc.cfg --load bin/tiny-yolo-voc.weights --gpu 0

它会给出错误：

Traceback (most recent call last):
  File "./flow", line 4, in <module>
    from darkflow.cli import cliHandler
  File "/home/pi/tensor/darkflow/darkflow/cli.py", line 3, in <module>
    from .net.build import TFNet
  File "/home/pi/tensor/darkflow/darkflow/net/build.py", line 5, in <module>
    from .ops import op_create, identity
  File "/home/pi/tensor/darkflow/darkflow/net/ops/__init__.py", line 1, in <module>
    from .simple import *
  File "/home/pi/tensor/darkflow/darkflow/net/ops/simple.py", line 1, in <module>
    import tensorflow.contrib.slim as slim
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/__init__.py", line 82, in <module>
    from tensorflow.contrib.eager.python import tfe as eager
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/eager/python/tfe.py", line 76, in <module>
    from tensorflow.contrib.eager.python.datasets import Iterator
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/eager/python/datasets.py", line 23, in <module>
    from tensorflow.contrib.data.python.ops import prefetching_ops
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/data/python/ops/prefetching_ops.py", line 25, in <module>
    resource_loader.get_path_to_datafile("../../_prefetching_ops.so"))
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/util/loader.py", line 55, in load_op_library
    ret = load_library.load_op_library(path)
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/python/framework/load_library.py", line 56, in load_op_library
    lib_handle = py_tf.TF_LoadLibrary(library_filename, status)
  File "/home/pi/tensor/lib/python3.5/site-packages/tensorflow/python/framework/errors_impl.py", line 473, in __exit__
    c_api.TF_GetCode(self.status.status))
tensorflow.python.framework.errors_impl.NotFoundError: /home/pi/tensor/lib/python3.5/site-packages/tensorflow/contrib/data/python/ops/../../_prefetching_ops.so: undefined symbol: _ZN6google8protobuf8internal26fixed_address_empty_stringE

我不知道哪里出了问题，也不知道如何解决这个问题。你能帮忙吗？

Answer 1

我也有同样的问题。在浪费了4天之后，我决定尝试一下旧版本，因为它们可能会起作用。我发现了一个没有这个错误的版本。不过，这是针对python2.7的，所以我不得不修改了一些代码。http://ci.tensorflow.org/view/Nightly/job/nightly-pi/78/artifact/output-artifacts/tensorflow-1.3.0-cp27-none-any.whl