currently I'm trying to run darkflow on RPi zero with it's camera installed.
detection using darkflow is a little bit slow but working quite well on pi 3. (took several hour to compile opencv3 though) So I thought it's similar on pi zero, but it wasn't.
I managed to install opencv 3.3.1 (took a day to build) and tensorflow ( using
tensorflow-1.4.0-cp35-none-any.whl renamed from tensorflow-1.4.0-cp34-none-any.whl ), and they are working fine (sort of... tensorflow shows some warning due to python version incompatibility - but it's working anyway according to Pete Warden's blog: https://petewarden.com/2017/08/20/cross-compiling-tensorflow-for-the-raspberry-pi )
built darkflow with
python setup.py build_ext --inplace
without any problem. ( it's actually python3, for I'm on venv with python3 )
But when I try to check if detection works with following commands:
./flow --imgdir=sample_img --model cfg/tiny-yolo-voc.cfg --load bin/tiny-yolo-voc.weights --gpu 0
it gives error:
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
I have no idea what's wrong and how to resolve this. Could you help?
