通过 caffe 的 python 接口测试模型分类出现如下错误，TypeError: _open() got an unexpected keyword argument 'as_grey'
python classify-alexnet.py --gpu test.jpg result ... I1005 15:32:11.174566 31243 net.cpp:244] This network produces output prob I1005 15:32:11.174882 31243 net.cpp:257] Network initialization done. I1005 15:32:11.199013 31243 upgrade_proto.cpp:79] Attempting to upgrade batch norm layers using deprecated params: /home/user/densenet121.caffemodel I1005 15:32:11.199146 31243 upgrade_proto.cpp:82] Successfully upgraded batch norm layers using deprecated params. I1005 15:32:11.199154 31243 net.cpp:746] Ignoring source layer label_data_1_split I1005 15:32:11.205960 31243 net.cpp:746] Ignoring source layer fc6_fc6_0_split I1005 15:32:11.205986 31243 net.cpp:746] Ignoring source layer loss I1005 15:32:11.205992 31243 net.cpp:746] Ignoring source layer accuracy/top1 I1005 15:32:11.206010 31243 net.cpp:746] Ignoring source layer accuracy/top5 Loading file: test.jpg Traceback (most recent call last): File "classify-alexnet.py", line 169, in <module> main(sys.argv) File "classify-alexnet.py", line 137, in main inputs = [caffe.io.load_image(args.input_file)] File "/home/user/caffe-cudnn-nccl-py3/python/caffe/io.py", line 302, in load_image img = skimage.img_as_float(skimage.io.imread(filename, as_grey=not color)).astype(np.float32) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/skimage/io/_io.py", line 48, in imread img = call_plugin('imread', fname, plugin=plugin, **plugin_args) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/skimage/io/manage_plugins.py", line 209, in call_plugin return func(*args, **kwargs) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/skimage/io/_plugins/imageio_plugin.py", line 10, in imread return np.asarray(imageio_imread(*args, **kwargs)) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/imageio/core/functions.py", line 265, in imread reader = read(uri, format, "i", **kwargs) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/imageio/core/functions.py", line 186, in get_reader return format.get_reader(request) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/imageio/core/format.py", line 170, in get_reader return self.Reader(self, request) File "/home/user/.conda/envs/py36.caffe.cuda90/lib/python3.6/site-packages/imageio/core/format.py", line 221, in __init__ self._open(**self.request.kwargs.copy()) TypeError: _open() got an unexpected keyword argument 'as_grey'根据错误信息发现在 caffe 提供的 python/caffe/io.py 中，302行 skimage.io.imread() 调用参数 “as_grey” 实际应当修改为 “as_gray”，原因应该是 scikit-image 的 0.17.2 版本修改了参数名称。
283 ## Image IO 284 285 def load_image(filename, color=True): 286 """ 287 Load an image converting from grayscale or alpha as needed. 288 289 Parameters 290 ---------- 291 filename : string 292 color : boolean 293 flag for color format. True (default) loads as RGB while False 294 loads as intensity (if image is already grayscale). 295 296 Returns 297 ------- 298 image : an image with type np.float32 in range [0, 1] 299 of size (H x W x 3) in RGB or 300 of size (H x W x 1) in grayscale. 301 """ 302 img = skimage.img_as_float(skimage.io.imread(filename, as_grey=not color)).astype(np.float32) 303 if img.ndim == 2: 304 img = img[:, :, np.newaxis] 305 if color: 306 img = np.tile(img, (1, 1, 3)) 307 elif img.shape[2] == 4: 308 img = img[:, :, :3] 309 return img以下是相关程序库版本：
$ cdaplst | grep scikit-image scikit-image 0.17.2 py36h7c3b610_2 https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge $ python -V Python 3.6.11 $ nvcc -V nvcc: NVIDIA (R) Cuda compiler driver Copyright (c) 2005-2017 NVIDIA Corporation Built on Fri_Sep__1_21:08:03_CDT_2017 Cuda compilation tools, release 9.0, V9.0.176
