Python layers.Conv2DLayer方法代码示例

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def build_discriminator_32(image=None,ndf=128):
    lrelu = LeakyRectify(0.2)
    # input: images
    InputImg = InputLayer(shape=(None, 3, 32, 32), input_var=image)
    print ("Dis Img_input:", InputImg.output_shape)
    # Conv Layer
    dis1 = Conv2DLayer(InputImg, ndf, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu)
    print ("Dis conv1:", dis1.output_shape)
    # Conv Layer
    dis2 = batch_norm(Conv2DLayer(dis1, ndf*2, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv2:", dis2.output_shape)
    # Conv Layer
    dis3 = batch_norm(Conv2DLayer(dis2, ndf*4, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv3:", dis3.output_shape)
    # Conv Layer
    dis4 = DenseLayer(dis3, 1, W=Normal(0.02), nonlinearity=sigmoid)
    print ("Dis output:", dis4.output_shape)
    return dis4 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def build_discriminator_64(image=None,ndf=128):
    lrelu = LeakyRectify(0.2)
    # input: images
    InputImg = InputLayer(shape=(None, 3, 64, 64), input_var=image)
    print ("Dis Img_input:", InputImg.output_shape)
    # Conv Layer
    dis1 = Conv2DLayer(InputImg, ndf, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu)
    print ("Dis conv1:", dis1.output_shape)
    # Conv Layer
    dis2 = batch_norm(Conv2DLayer(dis1, ndf*2, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv2:", dis2.output_shape)
    # Conv Layer
    dis3 = batch_norm(Conv2DLayer(dis2, ndf*4, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv3:", dis3.output_shape)
    # Conv Layer
    dis4 = batch_norm(Conv2DLayer(dis3, ndf*8, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv3:", dis4.output_shape)
    # Conv Layer
    dis5 = DenseLayer(dis4, 1, W=Normal(0.02), nonlinearity=sigmoid)
    print ("Dis output:", dis5.output_shape)
    return dis5 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def build_discriminator_128(image=None,ndf=128):
    lrelu = LeakyRectify(0.2)
    # input: images
    InputImg = InputLayer(shape=(None, 3, 128, 128), input_var=image)
    print ("Dis Img_input:", InputImg.output_shape)
    # Conv Layer
    dis1 = Conv2DLayer(InputImg, ndf, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu)
    print ("Dis conv1:", dis1.output_shape)
    # Conv Layer
    dis2 = batch_norm(Conv2DLayer(dis1, ndf*2, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv2:", dis2.output_shape)
    # Conv Layer
    dis3 = batch_norm(Conv2DLayer(dis2, ndf*4, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv3:", dis3.output_shape)
    # Conv Layer
    dis4 = batch_norm(Conv2DLayer(dis3, ndf*8, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv3:", dis4.output_shape)
    # Conv Layer
    dis5 = batch_norm(Conv2DLayer(dis4, ndf*16, (4,4), (2,2), pad=1, W=Normal(0.02), nonlinearity=lrelu))
    print ("Dis conv4:", dis5.output_shape)
    # Conv Layer
    dis6 = DenseLayer(dis5, 1, W=Normal(0.02), nonlinearity=sigmoid)
    print ("Dis output:", dis6.output_shape)
    return dis6 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def network_classifier(self, input_var):

        network = {}
        network['classifier/input'] = InputLayer(shape=(None, 3, 64, 64), input_var=input_var, name='classifier/input')
        network['classifier/conv1'] = Conv2DLayer(network['classifier/input'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='classifier/conv1')
        network['classifier/pool1'] = MaxPool2DLayer(network['classifier/conv1'], pool_size=2, stride=2, pad=0, name='classifier/pool1')
        network['classifier/conv2'] = Conv2DLayer(network['classifier/pool1'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='classifier/conv2')
        network['classifier/pool2'] = MaxPool2DLayer(network['classifier/conv2'], pool_size=2, stride=2, pad=0, name='classifier/pool2')
        network['classifier/conv3'] = Conv2DLayer(network['classifier/pool2'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='classifier/conv3')
        network['classifier/pool3'] = MaxPool2DLayer(network['classifier/conv3'], pool_size=2, stride=2, pad=0, name='classifier/pool3')
        network['classifier/conv4'] = Conv2DLayer(network['classifier/pool3'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='classifier/conv4')
        network['classifier/pool4'] = MaxPool2DLayer(network['classifier/conv4'], pool_size=2, stride=2, pad=0, name='classifier/pool4')
        network['classifier/dense1'] = DenseLayer(network['classifier/pool4'], num_units=64, nonlinearity=rectify, name='classifier/dense1')
        network['classifier/output'] = DenseLayer(network['classifier/dense1'], num_units=10, nonlinearity=softmax, name='classifier/output')

        return network 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def test_conv2d(x_shape, num_filters, filter_size, flip_filters, batch_size=2):
    X_var = T.tensor4('X')
    l_x = L.InputLayer(shape=(None,) + x_shape, input_var=X_var, name='x')
    X = np.random.random((batch_size,) + x_shape).astype(theano.config.floatX)

    l_conv = L.Conv2DLayer(l_x, num_filters, filter_size=filter_size, stride=1, pad='same',
                           flip_filters=flip_filters, untie_biases=True, nonlinearity=None, b=None)
    conv_var = L.get_output(l_conv)
    conv_fn = theano.function([X_var], conv_var)
    tic()
    conv = conv_fn(X)
    toc("conv time for x_shape=%r, num_filters=%r, filter_size=%r, flip_filters=%r, batch_size=%r\n\t" %
        (x_shape, num_filters, filter_size, flip_filters, batch_size))

    tic()
    loop_conv = conv2d(X, l_conv.W.get_value(), flip_filters=flip_filters)
    toc("loop conv time for x_shape=%r, num_filters=%r, filter_size=%r, flip_filters=%r, batch_size=%r\n\t" %
        (x_shape, num_filters, filter_size, flip_filters, batch_size))

    assert np.allclose(conv, loop_conv, atol=1e-6) 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def build_model(self):
        '''
        Build Acoustic Event Net model
        :return:
        '''

        # A architecture 41 classes
        nonlin = lasagne.nonlinearities.rectify
        net = {}
        net['input'] = InputLayer((None, feat_shape[0], feat_shape[1], feat_shape[2]))  # channel, time. frequency
        # ----------- 1st layer group ---------------
        net['conv1a'] = ConvLayer(net['input'], num_filters=64, filter_size=(3, 3), stride=1, nonlinearity=nonlin)
        net['conv1b'] = ConvLayer(net['conv1a'], num_filters=64, filter_size=(3, 3), stride=1, nonlinearity=nonlin)
        net['pool1'] = MaxPool2DLayer(net['conv1b'], pool_size=(1, 2))  # (time, freq)
        # ----------- 2nd layer group ---------------
        net['conv2a'] = ConvLayer(net['pool1'], num_filters=128, filter_size=(3, 3), stride=1, nonlinearity=nonlin)
        net['conv2b'] = ConvLayer(net['conv2a'], num_filters=128, filter_size=(3, 3), stride=1, nonlinearity=nonlin)
        net['pool2'] = MaxPool2DLayer(net['conv2b'], pool_size=(2, 2))  # (time, freq)
        # ----------- fully connected layer group ---------------
        net['fc5'] = DenseLayer(net['pool2'], num_units=1024, nonlinearity=nonlin)
        net['fc6'] = DenseLayer(net['fc5'], num_units=1024, nonlinearity=nonlin)
        net['prob'] = DenseLayer(net['fc6'], num_units=41, nonlinearity=lasagne.nonlinearities.softmax)

        return net 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def setup_generator(self, input, config):
        for k, v in config.items(): setattr(args, k, v)
        args.zoom = 2**(args.generator_upscale - args.generator_downscale)

        units_iter = extend(args.generator_filters)
        units = next(units_iter)
        self.make_layer('iter.0', input, units, filter_size=(7,7), pad=(3,3))

        for i in range(0, args.generator_downscale):
            self.make_layer('downscale%i'%i, self.last_layer(), next(units_iter), filter_size=(4,4), stride=(2,2))

        units = next(units_iter)
        for i in range(0, args.generator_blocks):
            self.make_block('iter.%i'%(i+1), self.last_layer(), units)

        for i in range(0, args.generator_upscale):
            u = next(units_iter)
            self.make_layer('upscale%i.2'%i, self.last_layer(), u*4)
            self.network['upscale%i.1'%i] = SubpixelReshuffleLayer(self.last_layer(), u, 2)

        self.network['out'] = ConvLayer(self.last_layer(), 3, filter_size=(7,7), pad=(3,3), nonlinearity=None) 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def setup_discriminator(self):
        c = args.discriminator_size
        self.make_layer('disc1.1', batch_norm(self.network['conv1_2']), 1*c, filter_size=(5,5), stride=(2,2), pad=(2,2))
        self.make_layer('disc1.2', self.last_layer(), 1*c, filter_size=(5,5), stride=(2,2), pad=(2,2))
        self.make_layer('disc2', batch_norm(self.network['conv2_2']), 2*c, filter_size=(5,5), stride=(2,2), pad=(2,2))
        self.make_layer('disc3', batch_norm(self.network['conv3_2']), 3*c, filter_size=(3,3), stride=(1,1), pad=(1,1))
        hypercolumn = ConcatLayer([self.network['disc1.2>'], self.network['disc2>'], self.network['disc3>']])
        self.make_layer('disc4', hypercolumn, 4*c, filter_size=(1,1), stride=(1,1), pad=(0,0))
        self.make_layer('disc5', self.last_layer(), 3*c, filter_size=(3,3), stride=(2,2))
        self.make_layer('disc6', self.last_layer(), 2*c, filter_size=(1,1), stride=(1,1), pad=(0,0))
        self.network['disc'] = batch_norm(ConvLayer(self.last_layer(), 1, filter_size=(1,1),
                                                    nonlinearity=lasagne.nonlinearities.linear))


    #------------------------------------------------------------------------------------------------------------------
    # Input / Output
    #------------------------------------------------------------------------------------------------------------------ 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def bn_conv(input_layer, **kwargs):
    l = Conv2DLayer(input_layer, **kwargs)
    l = batch_norm(l, epsilon=0.001)
    return l 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def create_network():
    l = 1000
    pool_size = 5
    test_size1 = 13
    test_size2 = 7
    test_size3 = 5
    kernel1 = 128
    kernel2 = 128
    kernel3 = 128
    layer1 = InputLayer(shape=(None, 1, 4, l+1024))
    layer2_1 = SliceLayer(layer1, indices=slice(0, l), axis = -1)
    layer2_2 = SliceLayer(layer1, indices=slice(l, None), axis = -1)
    layer2_3 = SliceLayer(layer2_2, indices = slice(0,4), axis = -2)
    layer2_f = FlattenLayer(layer2_3)
    layer3 = Conv2DLayer(layer2_1,num_filters = kernel1, filter_size = (4,test_size1))
    layer4 = Conv2DLayer(layer3,num_filters = kernel1, filter_size = (1,test_size1))
    layer5 = Conv2DLayer(layer4,num_filters = kernel1, filter_size = (1,test_size1))
    layer6 = MaxPool2DLayer(layer5, pool_size = (1,pool_size))
    layer7 = Conv2DLayer(layer6,num_filters = kernel2, filter_size = (1,test_size2))
    layer8 = Conv2DLayer(layer7,num_filters = kernel2, filter_size = (1,test_size2))
    layer9 = Conv2DLayer(layer8,num_filters = kernel2, filter_size = (1,test_size2))
    layer10 = MaxPool2DLayer(layer9, pool_size = (1,pool_size))
    layer11 = Conv2DLayer(layer10,num_filters = kernel3, filter_size = (1,test_size3))
    layer12 = Conv2DLayer(layer11,num_filters = kernel3, filter_size = (1,test_size3))
    layer13 = Conv2DLayer(layer12,num_filters = kernel3, filter_size = (1,test_size3))
    layer14 = MaxPool2DLayer(layer13, pool_size = (1,pool_size))
    layer14_d = DenseLayer(layer14, num_units= 256)
    layer3_2 = DenseLayer(layer2_f, num_units = 128)
    layer15 = ConcatLayer([layer14_d,layer3_2])
    layer16 = DropoutLayer(layer15,p=0.5)
    layer17 = DenseLayer(layer16, num_units=256)
    network = DenseLayer(layer17, num_units= 2, nonlinearity=softmax)
    return network


#random search to initialize the weights 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def create_network():
    l = 1000
    pool_size = 5
    test_size1 = 13
    test_size2 = 7
    test_size3 = 5
    kernel1 = 128
    kernel2 = 128
    kernel3 = 128
    layer1 = InputLayer(shape=(None, 1, 4, l+1024))
    layer2_1 = SliceLayer(layer1, indices=slice(0, l), axis = -1)
    layer2_2 = SliceLayer(layer1, indices=slice(l, None), axis = -1)
    layer2_3 = SliceLayer(layer2_2, indices = slice(0,4), axis = -2)
    layer2_f = FlattenLayer(layer2_3)
    layer3 = Conv2DLayer(layer2_1,num_filters = kernel1, filter_size = (4,test_size1))
    layer4 = Conv2DLayer(layer3,num_filters = kernel1, filter_size = (1,test_size1))
    layer5 = Conv2DLayer(layer4,num_filters = kernel1, filter_size = (1,test_size1))
    layer6 = MaxPool2DLayer(layer5, pool_size = (1,pool_size))
    layer7 = Conv2DLayer(layer6,num_filters = kernel2, filter_size = (1,test_size2))
    layer8 = Conv2DLayer(layer7,num_filters = kernel2, filter_size = (1,test_size2))
    layer9 = Conv2DLayer(layer8,num_filters = kernel2, filter_size = (1,test_size2))
    layer10 = MaxPool2DLayer(layer9, pool_size = (1,pool_size))
    layer11 = Conv2DLayer(layer10,num_filters = kernel3, filter_size = (1,test_size3))
    layer12 = Conv2DLayer(layer11,num_filters = kernel3, filter_size = (1,test_size3))
    layer13 = Conv2DLayer(layer12,num_filters = kernel3, filter_size = (1,test_size3))
    layer14 = MaxPool2DLayer(layer13, pool_size = (1,pool_size))
    layer14_d = DenseLayer(layer14, num_units= 256)
    layer3_2 = DenseLayer(layer2_f, num_units = 128)
    layer15 = ConcatLayer([layer14_d,layer3_2])
    #layer16 = DropoutLayer(layer15,p=0.5)
    layer17 = DenseLayer(layer15, num_units=256)
    network = DenseLayer(layer17, num_units= 1, nonlinearity=None)
    return network


#random search to initialize the weights 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def network_discriminator(self, features):

        network = {}
        network['discriminator/conv2'] = Conv2DLayer(features, num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='discriminator/conv2')
        network['discriminator/pool2'] = MaxPool2DLayer(network['discriminator/conv2'], pool_size=2, stride=2, pad=0, name='discriminator/pool2')
        network['discriminator/conv3'] = Conv2DLayer(network['discriminator/pool2'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='discriminator/conv3')
        network['discriminator/pool3'] = MaxPool2DLayer(network['discriminator/conv3'], pool_size=2, stride=2, pad=0, name='discriminator/pool3')
        network['discriminator/conv4'] = Conv2DLayer(network['discriminator/pool3'], num_filters=32, filter_size=3, stride=1, pad='valid', nonlinearity=rectify, name='discriminator/conv4')
        network['discriminator/pool4'] = MaxPool2DLayer(network['discriminator/conv4'], pool_size=2, stride=2, pad=0, name='discriminator/pool4')
        network['discriminator/dense1'] = DenseLayer(network['discriminator/pool4'], num_units=64, nonlinearity=rectify, name='discriminator/dense1')
        network['discriminator/output'] = DenseLayer(network['discriminator/dense1'], num_units=2, nonlinearity=softmax, name='discriminator/output')

        return network 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def style_conv_block(conv_in, num_styles, num_filters, filter_size, stride, nonlinearity=rectify, normalization=instance_norm):
	sc_network = ReflectLayer(conv_in, filter_size//2)
	sc_network = normalization(ConvLayer(sc_network, num_filters, filter_size, stride, nonlinearity=nonlinearity, W=Normal()), num_styles=num_styles)
	return sc_network 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def setup_loss_net(self):
		"""
		Create a network of convolution layers based on the VGG16 architecture from the paper:
		"Very Deep Convolutional Networks for Large-Scale Image Recognition"

		Original source: https://gist.github.com/ksimonyan/211839e770f7b538e2d8
		License: see http://www.robots.ox.ac.uk/~vgg/research/very_deep/

		Based on code in the Lasagne Recipes repository: https://github.com/Lasagne/Recipes
		"""
		loss_net = self.network['loss_net']
		loss_net['input'] = InputLayer(shape=self.shape)
		loss_net['conv1_1'] = ConvLayer(loss_net['input'], 64, 3, pad=1, flip_filters=False)
		loss_net['conv1_2'] = ConvLayer(loss_net['conv1_1'], 64, 3, pad=1, flip_filters=False)
		loss_net['pool1'] = PoolLayer(loss_net['conv1_2'], 2)
		loss_net['conv2_1'] = ConvLayer(loss_net['pool1'], 128, 3, pad=1, flip_filters=False)
		loss_net['conv2_2'] = ConvLayer(loss_net['conv2_1'], 128, 3, pad=1, flip_filters=False)
		loss_net['pool2'] = PoolLayer(loss_net['conv2_2'], 2)
		loss_net['conv3_1'] = ConvLayer(loss_net['pool2'], 256, 3, pad=1, flip_filters=False)
		loss_net['conv3_2'] = ConvLayer(loss_net['conv3_1'], 256, 3, pad=1, flip_filters=False)
		loss_net['conv3_3'] = ConvLayer(loss_net['conv3_2'], 256, 3, pad=1, flip_filters=False)
		loss_net['pool3'] = PoolLayer(loss_net['conv3_3'], 2)
		loss_net['conv4_1'] = ConvLayer(loss_net['pool3'], 512, 3, pad=1, flip_filters=False)
		loss_net['conv4_2'] = ConvLayer(loss_net['conv4_1'], 512, 3, pad=1, flip_filters=False)
		loss_net['conv4_3'] = ConvLayer(loss_net['conv4_2'], 512, 3, pad=1, flip_filters=False)
		loss_net['pool4'] = PoolLayer(loss_net['conv4_3'], 2)
		loss_net['conv5_1'] = ConvLayer(loss_net['pool4'], 512, 3, pad=1, flip_filters=False)
		loss_net['conv5_2'] = ConvLayer(loss_net['conv5_1'], 512, 3, pad=1, flip_filters=False)
		loss_net['conv5_3'] = ConvLayer(loss_net['conv5_2'], 512, 3, pad=1, flip_filters=False) 

# 需要导入模块: from lasagne import layers [as 别名]
# 或者: from lasagne.layers import Conv2DLayer [as 别名]
def build_cnn(input_var=None, w_init=None, n_layers=(4, 2, 1), n_filters_first=32, imsize=32, n_colors=3):
    """
    Builds a VGG style CNN network followed by a fully-connected layer and a softmax layer.
    Stacks are separated by a maxpool layer. Number of kernels in each layer is twice
    the number in previous stack.
    input_var: Theano variable for input to the network
    outputs: pointer to the output of the last layer of network (softmax)

    :param input_var: theano variable as input to the network
    :param w_init: Initial weight values
    :param n_layers: number of layers in each stack. An array of integers with each
                    value corresponding to the number of layers in each stack.
                    (e.g. [4, 2, 1] == 3 stacks with 4, 2, and 1 layers in each.
    :param n_filters_first: number of filters in the first layer
    :param imsize: Size of the image
    :param n_colors: Number of color channels (depth)
    :return: a pointer to the output of last layer
    """
    weights = []        # Keeps the weights for all layers
    count = 0
    # If no initial weight is given, initialize with GlorotUniform
    if w_init is None:
        w_init = [lasagne.init.GlorotUniform()] * sum(n_layers)
    # Input layer
    network = InputLayer(shape=(None, n_colors, imsize, imsize),
                                        input_var=input_var)
    for i, s in enumerate(n_layers):
        for l in range(s):
            network = Conv2DLayer(network, num_filters=n_filters_first * (2 ** i), filter_size=(3, 3),
                          W=w_init[count], pad='same')
            count += 1
            weights.append(network.W)
        network = MaxPool2DLayer(network, pool_size=(2, 2))
    return network, weights