在caffe中使用classify时出错

时间:2015-06-12 17:15:04

标签: python python-2.7 caffe

我在python中使用caffe进行分类。我从here获得了代码。在这里,我只使用简单的代码,如

plt.rcParams['figure.figsize'] = (10, 10)
plt.rcParams['image.interpolation'] = 'nearest'
plt.rcParams['image.cmap'] = 'gray'
mean_filename='./mean.binaryproto'
proto_data = open(mean_filename, "rb").read()
a = caffe.io.caffe_pb2.BlobProto.FromString(proto_data)
mean = caffe.io.blobproto_to_array(a)[0]
age_net_pretrained='./age_net.caffemodel'
age_net_model_file='./deploy_age.prototxt'
age_net = caffe.Classifier(age_net_model_file, age_net_pretrained,
mean=mean,
channel_swap=(2,1,0),
raw_scale=255,
image_dims=(256, 256))

然而,我收到了错误,例如

Traceback (most recent call last):
File "cnn_age_gender_demo.py", line 25, in 
image_dims=(256, 256))
File "/home/john/Downloads/caffe/python/caffe/classifier.py", line 34, in init
self.transformer.set_mean(in_, mean)
File "/home/john/Downloads/caffe/python/caffe/io.py", line 255, in set_mean
raise ValueError('Mean shape incompatible with input shape.')
ValueError: Mean shape incompatible with input shape.
你可以帮助我重新开始吗?感谢

4 个答案:

答案 0 :(得分:16)

转到caffe / python / caffe / io.py中的第253-254行 替换

if ms != self.inputs[in_][1:]:
    raise ValueError('Mean shape incompatible with input shape.')

通过

if ms != self.inputs[in_][1:]:
    print(self.inputs[in_])
    in_shape = self.inputs[in_][1:]
    m_min, m_max = mean.min(), mean.max()
    normal_mean = (mean - m_min) / (m_max - m_min)
    mean = resize_image(normal_mean.transpose((1,2,0)),in_shape[1:]).transpose((2,0,1)) * (m_max - m_min) + m_min
    #raise ValueError('Mean shape incompatible with input shape.')

重建。希望有所帮助

答案 1 :(得分:1)

我遇到了同样的问题,基于imagenet网络演示我使用这种方式修改脚本来加载第95行的平均文件

mean = np.load(args.mean_file).mean(1).mean(1)

答案 2 :(得分:0)

我非常害怕重建代码,因为caffe安装对我来说并不容易。 但要修复,调整大小的解决方案需要in_shape(user8264' s),这是在caffe / classifier.py内部设置的

无论如何,我调试并找到了age_net.caffemodel的in_shape =(3,227,227)的值

因此,用于年龄和性别预测的模型将发生以下变化:

age_net_pretrained='./age_net.caffemodel'
age_net_model_file='./deploy_age.prototxt'
age_net = caffe.Classifier(age_net_model_file, age_net_pretrained,
                   mean=mean,
                   channel_swap=(2,1,0),
                   raw_scale=255,
                   image_dims=(227, 227))

但是需要先修改意思:

m_min, m_max = mean.min(), mean.max()
normal_mean = (mean - m_min) / (m_max - m_min)
in_shape=(227, 227)
mean = caffe.io.resize_image(normal_mean.transpose((1,2,0)),in_shape)
                            .transpose((2,0,1)) * (m_max - m_min) + m_min

这将摆脱" ValueError:平均形状与输入形状不相容"。但我不确定准确性。显然,对我来说,跳过平均参数会给出更好的年龄预测:)

答案 3 :(得分:0)

编辑deploy_gender.prototxt并设置: input_dim:256 input_dim:256

不知道为什么写错了......