def forwardSize(self, inputsize):
isize = inputsize[0]
if len(isize) != 4:
raise AssertionError('Conv input size should has a lenght of 4')
if self.inputFeature is not None and isize[1] != self.inputFeature:
raise AssertionError('Conv put feature map size does not match')
if self.outputFeature is not None:
self.inputFeature = isize[1]
self.mapMulti = self.outputFeature / self.inputFeature
elif self.mapMulti is not None:
self.inputFeature = isize[1]
self.outputFeature = int(self.inputFeature * self.mapMulti)
weightIniter = winit.XavierInit()
initweight = weightIniter.initialize(
(self.outputFeature, self.inputFeature, *self.filterSize))
initbias = floatX(np.zeros((self.outputFeature, )))
self.w = theano.shared(initweight, borrow=True)
self.b = theano.shared(initbias, borrow=True)
retSize = None
if self.border == 'half':
retSize = [(isize[0], self.outputFeature,
int(isize[2] / self.subsample[0]),
int(isize[3] / self.subsample[1]))]
else:
raise NotImplementedError
return retSize
def forwardSize(self, inputsize):
isize = inputsize[0]
ainit = floatX(np.ones((isize[1], )))
self.a = theano.shared(ainit, borrow=True)
if len(isize) == 4:
return [(isize[0], isize[1], isize[2], isize[3])]
if len(isize) == 2:
return [(isize[0], isize[1])]
else:
raise IndexError
def forwardSize(self, inputsize):
#print(inputsize)
xsize = inputsize[0]
isize = xsize[1:]
#print('bn.size: {}'.format(isize))
betaInit = floatX(np.zeros(isize))
self.beta = theano.shared(betaInit, name=self.name+'beta', borrow=True)
gammaInit = floatX(np.ones(isize))
self.gamma = theano.shared(gammaInit, name=self.name+'gamma', borrow=True)
meanInit = floatX(np.zeros(isize))
self.meanStats = theano.shared(meanInit, borrow=True)
varInit = floatX(np.ones(isize))
self.varStats = theano.shared(varInit, borrow=True)
return inputsize
def initialize(self, shape):
if len(shape) == 2:
# this is full connection
coeff = np.sqrt(self.nonlinearGain / shape[0])
elif len(shape) == 4:
# this is conv2d
coeff = np.sqrt(self.nonlinearGain / np.prod(shape[1:]))
else:
raise NotImplementedError("Unknown shape")
#print("coeff is {}".format(coeff))
return floatX(np.random.randn(*shape) * coeff)
def test_conv2d_forward(self):
x = np.asarray(rng.uniform(low=-1, high=1, size=(500, 1, 28, 28)))
w = floatX(np.random.randn(20, 1, *(3, 3)) * 0.01)
input_x = T.tensor4()
input_w = T.tensor4()
y = T.nnet.conv2d(input_x,
input_w,
border_mode='half',
subsample=(1, 1))
f = theano.function(inputs=[input_x, input_w],
outputs=y,
allow_input_downcast=True)
y_shape = f(x, w).shape
self.assertEqual(y_shape, (500, 20, 28, 28))
def forwardSize(self, inputsize):
isize = inputsize[0]
#print("upconv2d input size: {}".format(isize))
if not (len(isize) == 4 or len(isize) == 2):
raise IndexError
self.batchSize = isize[0]
if len(isize) == 2:
self.isAfterFullConn = True
self.dataSize = (
1,
1,
)
self.outputFeatureDim = isize[1]
self.inputFeatureDim = isize[1] // self.mapMulti
elif len(isize) == 4:
if self.mapMulti is None and isize[1] != self.outputFeatureDim:
raise IndexError
self.dataSize = isize[2:]
if self.mapMulti is not None:
self.outputFeatureDim = isize[1]
self.inputFeatureDim = isize[1] // self.mapMulti
initweight = floatX(
np.random.randn(self.outputFeatureDim, self.inputFeatureDim, *
self.filterSize) * 0.01)
self.w = theano.shared(initweight, borrow=True)
retSize = None
if self.border == 'valid':
retSize = [(isize[0], self.inputFeatureDim,
int(isize[2] * self.subsample[0]),
int(isize[3] * self.subsample[1]))]
else:
raise NotImplementedError
#print('upconv2d output size: {}'.format(retSize))
return retSize
def convert(def_path, caffemodel_path, output_path, phase):
# read from .prototxt file to collect layers.
params = caffe.proto.caffe_pb2.NetParameter()
with open(def_path, 'r') as def_file:
text_format.Merge(def_file.read(), params)
layerName2InstanceMap = {} # dict of str:layer
layerName2Bottom = {} # dict of str:list
inplaceOpMap = {} # dict of str:str
inputLayer = None
for layer in params.layer:
lname = layer.name
ltype = layer.type
ltop = layer.top
lbottom = layer.bottom
if len(ltop) > 0 and len(lbottom) > 0 and ltop[0] == lbottom[0]:
inplaceOpMap[lbottom[0]] = lname
if ltype == 'Input':
nl = L.RawInput((layer.input_param.shape[0].dim[1],
layer.input_param.shape[0].dim[2],
layer.input_param.shape[0].dim[3]))
nl.name = lname
layerName2InstanceMap[layer.name] = nl
inputLayer = nl
elif ltype == 'Convolution':
name = layer.name
bottom = layer.bottom
output_feature_map = layer.convolution_param.num_output
kernel_size = layer.convolution_param.kernel_size[0]
stride = (1, 1)
if len(layer.convolution_param.stride) > 0:
stride = layer.convolution_param.stride[0]
stride = (stride, stride)
nl = L.Conv2d(filter_size=(kernel_size, kernel_size),
output_feature=output_feature_map,
subsample=stride)
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif ltype == 'ReLU':
nl = L.Relu()
nl.name = lname
name = layer.name
bottom = layer.bottom
top = layer.top
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif layer.type == 'Pooling':
name = layer.name
# 0: max, 1: average, 2: stochastic
poolingMethod = layer.pooling_param.pool
if poolingMethod == 0:
poolingMethod = 'max'
elif poolingMethod == 1:
poolingMethod = 'avg'
kernel_size = layer.pooling_param.kernel_size
stride = layer.pooling_param.stride
pad = layer.pooling_param.pad
nl = L.Pooling(dsize=(kernel_size, kernel_size),
stride=(stride, stride),
pad=(pad, pad),
mode=poolingMethod)
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif layer.type == 'LRN':
name = layer.name
local_size = layer.lrn_param.local_size
alpha = layer.lrn_param.alpha
beta = layer.lrn_param.beta
nl = L.LRN(local_size=local_size, alpha=alpha, beta=beta)
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif layer.type == 'Concat':
name = layer.name
nl = L.Concat()
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif layer.type == 'Dropout':
name = layer.name
ratio = layer.dropout_param.dropout_ratio
nl = L.Dropout(p=ratio)
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
elif layer.type == 'InnerProduct':
name = layer.name
output_feature = layer.inner_product_param.num_output
nl = L.FullConn(output_feature=output_feature)
nl.name = lname
layerName2InstanceMap[name] = nl
if not isinstance(layerName2InstanceMap[layer.bottom[0]],
L.Flatten):
print('Insert flatten layer before full connection')
fl = L.Flatten()
fl.name = name + 'pre_flatten'
layerName2InstanceMap[fl.name] = fl
layerName2Bottom[fl.name] = layer.bottom
layerName2Bottom[name] = (fl.name, )
else:
layerName2Bottom[name] = layer.bottom
elif layer.type == 'Softmax':
name = layer.name
nl = L.SoftMax()
nl.name = lname
layerName2InstanceMap[name] = nl
layerName2Bottom[name] = layer.bottom
else:
print(layer.type)
raise NotImplementedError('unknown caffe layer.')
print(inplaceOpMap)
# create the network
n = N.Network()
for name in layerName2InstanceMap.keys():
if name in layerName2Bottom:
for bottomLayer in layerName2Bottom[name]:
if bottomLayer in inplaceOpMap.keys(
) and inplaceOpMap[bottomLayer] != name:
n.connect(layerName2InstanceMap[inplaceOpMap[bottomLayer]],
layerName2InstanceMap[name],
reload=True)
else:
n.connect(layerName2InstanceMap[bottomLayer],
layerName2InstanceMap[name],
reload=True)
n.setInput(inputLayer, reload=True)
n.buildForwardSize()
# read .caffemodel file to load real parameters.
net_param = caffe_pb2.NetParameter()
with open(caffemodel_path, 'rb') as f:
net_param.ParseFromString(f.read())
for layer in net_param.layers:
lname = layer.name # str
ltype = layer.type # int, the mapping is defined in caffe/src/caffe/proto/caffe.proto
bottom = layer.bottom # RepeatedScalarContainer
top = layer.top # RepeatedScalarContainer
print("{}, {}".format(lname, ltype))
if lname in layerName2InstanceMap.keys():
if ltype == 4: # convolution
w = np.array(layer.blobs[0].data).reshape(
(layer.blobs[0].num, layer.blobs[0].channels,
layer.blobs[0].height, layer.blobs[0].width), )
bias = np.array(layer.blobs[1].data).reshape(
(layer.blobs[1].width), )
print(w.shape)
if w.shape != layerName2InstanceMap[lname].w.get_value().shape:
print(w.shape)
print(layerName2InstanceMap[lname].w.get_value().shape)
raise Exception('Error, w shape do not match.')
if bias.shape != layerName2InstanceMap[lname].b.get_value(
).shape:
print(bias.shape)
print(layerName2InstanceMap[lname].b.get_value().shape)
raise Exception('Error, b shape do not match.')
layerName2InstanceMap[lname].w = theano.shared(floatX(w),
borrow=True)
layerName2InstanceMap[lname].b = theano.shared(floatX(bias),
borrow=True)
elif ltype == 5: # data
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 18: # relu
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 17: # pooling
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 15: # lrn
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 3: # concat
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 6: # dropout
print('seen name: {}, {}'.format(lname, ltype))
elif ltype == 14: # fullconn
print('seen name: {}, {}'.format(lname, ltype))
w = np.array(layer.blobs[0].data).reshape(
(layer.blobs[0].width, layer.blobs[0].height), )
bias = np.array(layer.blobs[1].data).reshape(
(layer.blobs[1].width), )
print("heh:{}".format(lname))
print(layerName2InstanceMap[lname])
print(layerName2InstanceMap[lname].w)
if w.shape != layerName2InstanceMap[lname].w.get_value().shape:
print(w.shape)
print(layerName2InstanceMap[lname].w.get_value().shape)
raise Exception('Error, w shape do not match.')
if bias.shape != layerName2InstanceMap[lname].b.get_value(
).shape:
print(bias.shape)
print(layerName2InstanceMap[lname].b.get_value().shape)
raise Exception('Error, b shape do not match.')
layerName2InstanceMap[lname].w = theano.shared(floatX(w),
borrow=True)
layerName2InstanceMap[lname].b = theano.shared(floatX(bias),
borrow=True)
elif ltype == 21: # 21 for Softmax output, 20 for softmax
print('seen name: {}, {}'.format(lname, ltype))
else:
print('seen name: {}, unknown type: {}'.format(lname, ltype))
else:
if len(layer.blobs) > 0:
#raise NotImplementedError('unseen layer with blobs: {}'.format(lname))
print('error, unseen layer with blobs: {}, {}'.format(
lname, ltype))
else:
#print('warning, unseen name: {}, {}'.format(lname, ltype))
pass
# finally build the network.
n.build(reload=True)
return n
