def score_combined(decoder_current, # h_t
decoder_previous, # h_i
reuse_variables=False,
dtype=tf.float32):
""" Applies a score function of the form
v.(W1.hi + W2.hs)
where W is a weight matrix, v is a vector of parameters, hi is one
of each of the decoder hidden states and hs is the current hidden state at
timestep t.
The function performs a 1-by-1 convolution to calculate W.hi and performs
the W2.hs step using a ``linear'' cell (see cells.linear for the
documentation) and broadcasted into the result of W1.hi (encoder_hiddens)
via multiplication step. After this step a reduce_sum is performed over
axis=[2,3] so the correct results are obtained.
Args:
decoder_current: not used
attn_size: the size of the attention vectors
encoder_hiddens: 3-D Tensor [batch_size, timestep, hidden_dim]. It
represents the hidden sattes of the decoder up to the current
timestep.
current_hidden: Tensor, representing the current hidden state at
timestep t
Returns:
beta: decoder hidden states after applying the content function
"""
with tf.variable_scope("score_salton_combined") as scope:
if reuse_variables:
scope.reuse_variables()
_, output_size = get_2d_tensor_shapes(decoder_current)
decoder_current = cells.linear(
[decoder_current], output_size, bias=False, dtype=dtype)
#
decoder_previous, attn_dim = reshape_attention(decoder_previous)
# we first get the correct weight matrix
ws = tf.get_variable("AttnDecWs", [1, 1, attn_dim, attn_dim], dtype=dtype)
# we apply a small convolution to the decoder states - it is more
# efficient than performing a recurrent matrix * matrix
hidden_features = convolve(decoder_previous, ws)
hidden_features = hidden_features + decoder_current
# we then get the vector v that will be used on the second
# multiplication op.
vs = tf.get_variable("AttnDecVs", [attn_dim], dtype=dtype)
scores = tf.reduce_sum((vs * tf.tanh(hidden_features)), [2, 3])
return scores
def global_pooling_branch(self):
global_pool = tf.layers.average_pooling2d(inputs = self.layer,pool_size = self.layer_shape[1],strides = 1)
conv1_2 = convolve(layer = global_pool, ksize = self.layer_shape[1], in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1], padding = 'VALID')
upsampled = convolve_T(layer = conv1_2, ksize = self.layer_shape[1], strides = [1,self.layer_shape[1],self.layer_shape[1],1],
in_depth = self.layer_shape[-1], out_depth = self.layer_shape[-1], output_shape = self.layer_shape)
#
return upsampled
def _convolve(self, src_neglogprob, src_branch_neglogprob, inverse_time):
"""
Compute the convolution of parent (target) and child (source)
nodes negative log-likelihood distributions.
Take the source node log-LH distribution, extracts its grid. Based on
the branch length probability distribution (also neg log-LH), find
approximate position of the target node. Make the grid for the target
node, and for each point of this newly generated grid, compute the
convolution over all possible positions of the source node.
Args:
- src_neglogprob (scipy.interpolate.interp1d): neg log-LH
distribution of the node to be integrated, represented as scipy
interpolation object
- src_branch_neglogprob(scipy.interpolate.interp1d): neg log-LH
distribution of the branch lenghts between the two nodes, represented
as scipy interpolation object
- inverse_time (bool): Whether the time should be inversed.
True if we go from leaves to root (against absolute time scale), and
the convolution is computed over positions of the child node.
False if the messages are propagated from root towards leaves (the same
direction as the absolute time axis), and the convolution is being
computed over the position of the parent node
"""
opt_source_pos = utils.min_interp(src_neglogprob)
opt_branch_len = utils.min_interp(src_branch_neglogprob)
if inverse_time:
opt_target_pos = opt_source_pos + opt_branch_len # abs_t
else:
opt_target_pos = opt_source_pos - opt_branch_len
# T
target_grid = utils.make_node_grid(opt_target_pos)
target_grid.sort() # redundant
if hasattr(src_neglogprob, 'delta_pos'): # convolve with delta-fun
x_axis = target_grid - src_neglogprob.delta_pos
x_axis[x_axis < ttconf.MIN_T] = ttconf.MIN_T
x_axis[x_axis > ttconf.MAX_T] = ttconf.MAX_T
res_y = src_branch_neglogprob(x_axis)
res = interp1d(target_grid, res_y, kind='linear')
else: # convolve two different distributions
pre_b = np.min(src_branch_neglogprob.y)
pre_n = np.min(src_neglogprob.y)
src_branch_neglogprob.y -= pre_b
src_neglogprob.y -= pre_n
res = utils.convolve(target_grid, src_neglogprob,
src_branch_neglogprob)
src_branch_neglogprob.y += pre_b
src_neglogprob.y += pre_n
res.y += pre_b
res.y += pre_n
return res
def _convolve(self, src_neglogprob, src_branch_neglogprob, inverse_time):
"""
Compute the convolution of parent (target) and child (source)
nodes negative log-likelihood distributions.
Take the source node log-LH distribution, extracts its grid. Based on
the branch length probability distribution (also neg log-LH), find
approximate position of the target node. Make the grid for the target
node, and for each point of this newly generated grid, compute the
convolution over all possible positions of the source node.
Args:
- src_neglogprob (scipy.interpolate.interp1d): neg log-LH
distribution of the node to be integrated, represented as scipy
interpolation object
- src_branch_neglogprob(scipy.interpolate.interp1d): neg log-LH
distribution of the branch lenghts between the two nodes, represented
as scipy interpolation object
- inverse_time (bool): Whether the time should be inversed.
True if we go from leaves to root (against absolute time scale), and
the convolution is computed over positions of the child node.
False if the messages are propagated from root towards leaves (the same
direction as the absolute time axis), and the convolution is being
computed over the position of the parent node
"""
opt_source_pos = utils.min_interp(src_neglogprob)
opt_branch_len = utils.min_interp(src_branch_neglogprob)
if inverse_time:
opt_target_pos = opt_source_pos + opt_branch_len # abs_t
else:
opt_target_pos = opt_source_pos - opt_branch_len
# T
target_grid = utils.make_node_grid(opt_target_pos)
target_grid.sort() # redundant
if hasattr(src_neglogprob, 'delta_pos'): # convolve with delta-fun
x_axis = target_grid - src_neglogprob.delta_pos
x_axis[x_axis < ttconf.MIN_T] = ttconf.MIN_T
x_axis[x_axis > ttconf.MAX_T] = ttconf.MAX_T
res_y = src_branch_neglogprob(x_axis)
res = interp1d(target_grid, res_y, kind='linear')
else: # convolve two different distributions
pre_b = np.min(src_branch_neglogprob.y)
pre_n = np.min(src_neglogprob.y)
src_branch_neglogprob.y -= pre_b
src_neglogprob.y -= pre_n
res = utils.convolve(target_grid, src_neglogprob, src_branch_neglogprob)
src_branch_neglogprob.y += pre_b
src_neglogprob.y += pre_n
res.y += pre_b
res.y += pre_n
return res
def score_single(
unused_arg, # not used - pylint: disable=W0613
decoder_previous, # h_i
reuse_variables=False,
dtype=tf.float32):
""" Applies a score function of the form
v.(W.hi)
to the hidden states of the decoder, where W is a weight matrix, v is a
vector of parameters and hi is one of each of the decoder hidden states.
The function performs a 1-by-1 convolution to calculate W.hi and the vector
v is broadcasted with a multiplication step into the result of W.hi. After
this step a reduce_sum is performed over axis=[2,3] so the correct results
are obtained.
Args:
decoder_current: not used
attn_size: the size of the attention vectors
encoder_hiddens: 3-D Tensor [batch_size, timestep, hidden_dim]. It
represents the hidden sattes of the decoder up to the current
timestep.
current_hidden: Tensor, representing the current hidden state at
timestep t
Returns:
beta: decoder hidden states after applying the content function
"""
with tf.variable_scope("score_salton_single") as scope:
if reuse_variables:
scope.reuse_variables()
#
decoder_previous, attn_dim = reshape_attention(decoder_previous)
# we first get the correct weight matrix
ws = tf.get_variable("AttnDecWs", [1, 1, attn_dim, attn_dim],
dtype=dtype)
# we apply a small convolution to the decoder states - it is more
# efficient than performing a recurrent matrix * matrix
hidden_features = convolve(decoder_previous, ws)
# we then get the vector v that will be used on the second
# multiplication op.
vs = tf.get_variable("AttnDecV_%d" % 0, [attn_dim], dtype=dtype)
scores = tf.reduce_sum((vs * tf.tanh(hidden_features)), [2, 3])
return scores
def edge_detection(im):
'''
Function that convolves im with vertial and horizontal sobel filters
to find edges in a photo
Args:
im: np.array of shape [H, W, 3]
'''
image = gausian_blur(im, 5, 1.4)
image = grayscale_mean(image)
# Using vertical and horizontal Sobel kernels
sobel_x = np.array([[-1, 0, 1], [-2, 0, 2], [-1, 0, 1]])
sobel_y = np.array([[1, 2, 1], [0, 0, 0], [-1, -2, -1]])
edge_x = convolve(image, sobel_x)
edge_y = convolve(image, sobel_y)
edge = np.round(np.sqrt(np.power(edge_x, 2) + np.power(edge_y, 2)))
return edge, edge_x, edge_y
def wahabFilter(image, orientations, w=8):
result = np.empty(image.shape)
height, width = image.shape
for y in range(0, height - w, w):
for x in range(0, width - w, w):
orientation = orientations[y+w//2, x+w//2]
kernel = wahabKernel(16, orientation)
result[y:y+w, x:x+w] = utils.convolve(image, kernel, (y, x), (w, w))
result[y:y+w, x:x+w] /= np.sum(kernel)
return result
def downsample(self):
max_pool_1 = MaxPool2d(layer = self.layer)
conv7_1 = convolve(layer = max_pool_1, ksize = 7, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
conv7_2 = convolve(layer = conv7_1, ksize = 7, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
max_pool_2 = MaxPool2d(layer = conv7_1)
conv5_1 = convolve(layer = max_pool_2, ksize = 5, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
conv5_2 = convolve(layer = conv5_1, ksize = 5, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
max_pool_3 = MaxPool2d(layer = conv5_1)
conv3_1 = convolve(layer = max_pool_3, ksize = 3, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
conv3_2 = convolve(layer = conv3_1, ksize = 3, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1])
upsampled_8 = convolve_T(layer = conv3_2, ksize = 2, in_depth = self.layer_shape[-1], out_depth = self.layer_shape[-1],
output_shape = conv5_2.get_shape().as_list())
added_1 = tf.add(upsampled_8, conv5_2)
upsampled_16 = convolve_T(layer = added_1, ksize = 2, in_depth = self.layer_shape[-1], out_depth = self.layer_shape[-1],
output_shape = conv7_2.get_shape().as_list())
added_2 = tf.add(upsampled_16, conv7_2)
upsampled_32 = convolve_T(layer = added_2, ksize = 2, in_depth = self.layer_shape[-1], out_depth = self.layer_shape[-1],
output_shape = self.layer.get_shape().as_list())
return upsampled_32
def gausian_blur(im, kernel_size=5, kernel_sigma=1.0):
'''
A function that convolves im with kernel.
Args:
im: np.array of shape [H, W, 3]
kernel: nparray of shape [S, S]
Returns:
np.array of shape [H, W, 3]
'''
kernel = gausian_kernel(kernel_size, kernel_sigma)
return convolve(im, kernel)
def q2_3_b():
impulseH = np.zeros(8000)
impulseH[1] = 1
impulseH[4000] = 0.5
impulseH[7900] = 0.3
play_sound(ipcleanfilename)
Fs, sampleX_16bit = read_sound(ipcleanfilename)
sampleX_float = fnNormalize16BitToFloat(sampleX_16bit)
y = convolve(sampleX_float, impulseH)
y_16bit = fnNormalizeFloatTo16Bit(y)
save_file_name = "t2_16bit.wav"
save_sound(save_file_name, Fs, y_16bit)
play_sound(save_file_name)
def score_single(unused_arg, # not used - pylint: disable=W0613
decoder_previous, # h_i
reuse_variables=False,
dtype=tf.float32):
""" Applies a score function of the form
v.(W.hi)
to the hidden states of the decoder, where W is a weight matrix, v is a
vector of parameters and hi is one of each of the decoder hidden states.
The function performs a 1-by-1 convolution to calculate W.hi and the vector
v is broadcasted with a multiplication step into the result of W.hi. After
this step a reduce_sum is performed over axis=[2,3] so the correct results
are obtained.
Args:
decoder_current: not used
attn_size: the size of the attention vectors
encoder_hiddens: 3-D Tensor [batch_size, timestep, hidden_dim]. It
represents the hidden sattes of the decoder up to the current
timestep.
current_hidden: Tensor, representing the current hidden state at
timestep t
Returns:
beta: decoder hidden states after applying the content function
"""
with tf.variable_scope("score_salton_single") as scope:
if reuse_variables:
scope.reuse_variables()
#
decoder_previous, attn_dim = reshape_attention(decoder_previous)
# we first get the correct weight matrix
ws = tf.get_variable("AttnDecWs", [1, 1, attn_dim, attn_dim], dtype=dtype)
# we apply a small convolution to the decoder states - it is more
# efficient than performing a recurrent matrix * matrix
hidden_features = convolve(decoder_previous, ws)
# we then get the vector v that will be used on the second
# multiplication op.
vs = tf.get_variable("AttnDecV_%d" % 0, [attn_dim], dtype=dtype)
scores = tf.reduce_sum((vs * tf.tanh(hidden_features)), [2, 3])
return scores
def q2_3_a():
impulseH = np.zeros(8000)
impulseH[1] = 1
impulseH[4000] = 0.5
impulseH[7900] = 0.3
plt.stem(impulseH)
plt.grid()
plt.show()
x = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
h = np.array([1, 2, 3, 4, 5, 6])
y_test = convolve(x, h)
y = np.convolve(x, h)
comparison = y == y_test
assert comparison.all()
def q2_4_b():
h1 = np.array(
[0.06523, 0.14936, 0.21529, 0.2402, 0.21529, 0.14936, 0.06523],
dtype='float')
h2 = np.array(
[-0.06523, -0.14936, -0.21529, 0.7598, -0.21529, -0.14936, -0.06523],
dtype='float')
n = np.arange(0, 10)
x = np.zeros(len(n))
for i in range(len(n)):
x[i] = delta(n[i]) - 2 * delta(n[i] - 15)
results_1_1 = convolve(x, h1)
results_1_2 = np.convolve(x, h1)
results_1_3 = signal.lfilter(h1, [1], x)
print(results_1_1)
print(results_1_2)
print(results_1_3)
results_2_1 = convolve(x, h2)
results_2_2 = np.convolve(x, h2)
results_2_3 = signal.lfilter(h2, [1], x)
print(results_2_1)
print(results_2_2)
print(results_2_3)
#Transform Function
transform = lambda x: activation_function(
(np.dot(x, hidden.value) + bias.value)).tolist()
#Load
data = sc.textFile(file_input).map(lambda x: float(x.split(";")[1]))
#Indexing
data = utils.zip_index(data)
#normalization
data_min, data_max, data = utils.normalization(sc, data)
#Convolve Data (Feature Selection)
data = utils.convolve(data, jumlah_fitur)
#Transform data
data = data.map(lambda x: (x[0], x[1], transform(x[2])))
#Split train and test
train, test = utils.train_test_split(data)
#Labelling Points
train = utils.labelled_points(train)
test = utils.labelled_points(test)
#Regression (this is not least square but SGD)
lrm = LinearRegressionWithSGD()
model = lrm.train(train)
end_queue_v = manager.Queue(30)
multiprocessing.Pool(1, worker, (beg_queue_v, 0, 25, valid_paths))
multiprocessing.Pool(1, worker, (mid_queue_v, 26, 125, valid_paths))
multiprocessing.Pool(1, worker, (end_queue_v, 126, 999, valid_paths))
observation_placeholder = tf.placeholder("float32",
[batch_size, dims, dims, 3])
moves_placeholder = tf.placeholder("float32", [batch_size, dims, dims, 5])
mask_placeholder = tf.placeholder("float32", [batch_size, dims, dims])
rewards_placeholder = tf.placeholder("float32", [batch_size, 1])
training_placeholder = tf.placeholder(tf.bool)
learning_rate = tf.Variable(1e-4, trainable=False)
with tf.variable_scope('model'):
h_conv1 = convolve(observation_placeholder, 3, 256, 'c1')
h_conv2 = convolve(h_conv1, 256, 128, 'c2', kernel=3)
h_conv3 = convolve(h_conv2, 128, 128, 'c3', kernel=3)
h_conv5 = convolve(h_conv3, 128, 128, 'c51', kernel=3)
h_conv7 = convolve(h_conv5, 128, 128, 'c61', kernel=3)
h_conv4 = convolve(h_conv7, 128, 256, 'c5', kernel=3)
h_conv18 = convolve(h_conv4, 256, 5, 'c18', False, kernel=5)
prediction_layer = h_conv18
ce = tf.nn.softmax_cross_entropy_with_logits(
prediction_layer, moves_placeholder) * mask_placeholder
pre_loss = tf.reduce_sum(
tf.reshape(ce, [batch_size, -1]) * rewards_placeholder)
def generator(acres):
for _ in range(1000):
acres = convolve(acres)
yield score(acres)
def score_combined(
decoder_current, # h_t
decoder_previous, # h_i
reuse_variables=False,
dtype=tf.float32):
""" Applies a score function of the form
v.(W1.hi + W2.hs)
where W is a weight matrix, v is a vector of parameters, hi is one
of each of the decoder hidden states and hs is the current hidden state at
timestep t.
The function performs a 1-by-1 convolution to calculate W.hi and performs
the W2.hs step using a ``linear'' cell (see cells.linear for the
documentation) and broadcasted into the result of W1.hi (encoder_hiddens)
via multiplication step. After this step a reduce_sum is performed over
axis=[2,3] so the correct results are obtained.
Args:
decoder_current: not used
attn_size: the size of the attention vectors
encoder_hiddens: 3-D Tensor [batch_size, timestep, hidden_dim]. It
represents the hidden sattes of the decoder up to the current
timestep.
current_hidden: Tensor, representing the current hidden state at
timestep t
Returns:
beta: decoder hidden states after applying the content function
"""
with tf.variable_scope("score_salton_combined") as scope:
if reuse_variables:
scope.reuse_variables()
_, output_size = get_2d_tensor_shapes(decoder_current)
decoder_current = cells.linear([decoder_current],
output_size,
bias=False,
dtype=dtype)
#
decoder_previous, attn_dim = reshape_attention(decoder_previous)
# we first get the correct weight matrix
ws = tf.get_variable("AttnDecWs", [1, 1, attn_dim, attn_dim],
dtype=dtype)
# we apply a small convolution to the decoder states - it is more
# efficient than performing a recurrent matrix * matrix
hidden_features = convolve(decoder_previous, ws)
hidden_features = hidden_features + decoder_current
# we then get the vector v that will be used on the second
# multiplication op.
vs = tf.get_variable("AttnDecVs", [attn_dim], dtype=dtype)
scores = tf.reduce_sum((vs * tf.tanh(hidden_features)), [2, 3])
return scores
#!/usr/bin/env python
from __future__ import print_function
from utils import convolve
from utils import reader
from utils import score
if __name__ == '__main__':
with open('data.txt', 'r') as f:
acres = reader(f)
for _ in range(10):
acres = convolve(acres)
print('Answer:', score(acres))
# 589931
norm_imgs_show = (norm_imgs - np.min(norm_imgs)) / (np.max(norm_imgs) -
np.min(norm_imgs))
plt.figure(figsize=(10, 10))
plt.imshow(utils.montage(norm_imgs_show, 'normalized.png'))
#creates kernel
ksize = 16
kernel = np.concatenate(
[utils.gabor(ksize)[:, :, np.newaxis] for i in range(3)], axis=2)
kernel_4d = tf.reshape(kernel, [kernel.shape[0], kernel.shape[1], 3, 1])
plt.figure(figsize=(5, 5))
plt.imshow(kernel_4d[:, :, 0, 0], cmap='gray')
plt.imsave(arr=kernel_4d[:, :, 0, 0], fname='kernel.png', cmap='gray')
#convolutes image
convolved = utils.convolve(imgs, kernel_4d)
convolved_show = (convolved - np.min(convolved)) / (np.max(convolved) -
np.min(convolved))
print(convolved_show.shape)
plt.figure(figsize=(10, 10))
plt.imshow(utils.montage(convolved_show[..., 0], 'convolved.png'), cmap='gray')
flattened = tf.reshape(convolved, (100, 10000))
# Now calculate some statistics about each of our images
values = tf.reduce_sum(flattened, axis=1)
# Then create another operation which sorts those values
# and then calculate the result:
idxs = tf.nn.top_k(values, k=100)[1]
# Then finally use the sorted indices to sort your images:
def compute_defocus(self, start, stop, step, letter_size):
letter_size = 5 * letter_size / 20.
plotdimension = 60. * self.PARAMS['1'] * (180. * 60. / np.pi) * self.PARAMS['5'] *.001 / self.PARAMS['4']
letter_size = self.PARAMS['1'] * letter_size * 60. / plotdimension
E = utils.make_E(letter_size, self.PARAMS['1'] ) # make an E of designated letter size
self.c[:5] = 0 # set the correctable terms to zero
defocus_range = np.arange(start, stop + step, step) # range of defoci in dioptres
# fig, ax = plt.subplots(1, len(defocus_range), figsize=(6,2)) # intitialize figure
if not os.path.isdir('static'):
os.mkdir('static')
else:
# for filename in glob.glob(os.path.join('static', '*.png')):
# os.remove(filename)
fig, ax = plt.subplots(1,len(defocus_range))
for i, defocus in enumerate(defocus_range):
self.c[3] = utils.calculateDefocus(self.PARAMS['2'], defocus)
PSF = self.PSF()[1]
Conv = utils.convolve(E, PSF.T)
ax[i].imshow(Conv, cmap='gray')
ax[i].xaxis.set_visible(False)
ax[i].yaxis.set_visible(False)
ax[i].set_title(str(defocus) + " D")
plotfile = os.path.join('static', 'DE_' + str(time.time()) + '.png')
fig.savefig(plotfile)
return plotfile
def defocus_e(self):
pass
def defocus_streh_rms(self):
pass
def defocus_mtf(self):
pass
def PSF(self):
pupilfunc = self.Zphase_MahajanOSA()
Hamp = np.fft.fft2(pupilfunc)
Hint = Hamp * np.conj(Hamp)
plotdimension = 60 * self.PARAMS['1'] * (180 *60 / np.pi) * self.PARAMS['5'] *.001 / self.PARAMS['4'] # divided by the size of the pupil field.
PSF = np.real(np.fft.fftshift(Hint)) # reorients the PSF so the origin is at the center of the image
PSF = PSF / (self.PARAMS['6']**2) # scale the PSF so that peak represents the Strehl ratio
axisPSF = np.arange(-plotdimension/2, ((plotdimension/2)-(plotdimension/self.PARAMS['1'])) + (plotdimension/self.PARAMS['1']), plotdimension/self.PARAMS['1'])
# plot psf
plt.figure(figsize=(8,4))
plt.imshow(PSF, cmap='gray', extent=[-plotdimension/2, plotdimension/2, -plotdimension/2, plotdimension/2], aspect='auto')
plt.title('Point Spread Function')
plt.xlabel('arcsec')
plt.ylabel('arcsec')
plt.xlim([-plotdimension/2, plotdimension/2])
plt.ylim([-plotdimension/2, plotdimension/2])
# if not os.path.isdir('static'):
# os.mkdir('static')
# # else:
# # for filename in glob.glob(os.path.join('static', '*.png')):
# # os.remove(filename)
plotfile = os.path.join('static', 'PSF_' + str(time.time()) + '.png')
plt.savefig(plotfile)
#plt.savefig("static/last/psf.png")
return plotfile, PSF
def compWaveOSA(self):
waveabermap = self.Zwave_MahajanOSA()
# waveabermap = waveabermap.T --> transpose for Austin's method
n = waveabermap.shape
# Define the axes of the wavefront plot in cyc/degree
axispupil = np.arange(-self.PARAMS['2']/2, (self.PARAMS['2']/2)-(self.PARAMS['2']/n[0]) + self.PARAMS['2']/n[0], self.PARAMS['2']/n[0])
# set parameters and display the wavefront aberration as a mesh plot
v = np.arange(np.floor(np.min(waveabermap)) - 0.25, np.ceil(np.max(waveabermap)) + 0.25, 0.25)
# plot wave aberration contour plot
plt.figure(figsize=(8,4))
plt.contourf(axispupil, axispupil, waveabermap)
plt.colorbar()
plt.title('Wavefront Aberration')
plt.xlabel('mm (right-left)')
plt.ylabel('mm (superior-inferior)')
if not os.path.isdir('static'):
os.mkdir('static')
else:
for filename in glob.glob(os.path.join('static', '*.png')):
os.remove(filename)
plotfile = os.path.join('static', 'WAM_' + str(time.time()) + '.png')
plt.savefig(plotfile)
#plt.savefig("static/last/wavemap.png")
return plotfile
def Zwave_MahajanOSA(self):
newsize = np.ceil(self.PARAMS['7']*self.PARAMS['2']).astype(int)
waveabermap = np.zeros((newsize, newsize))
sizeoffield = self.PARAMS['2']
self.PARAMS['6'] = 0
#------ Joel's Method -------------------------------------------------------------
nx = z_adjust(np.arange(1, newsize+1), sizeoffield, newsize)
ny = z_adjust(np.arange(1, newsize+1), sizeoffield, newsize)
xx, yy = np.meshgrid(nx, ny)
angle, norm_radius = utils.cart2pol(xx,yy)
norm_radius = norm_radius / (self.PARAMS['3'] / 2)
r = norm_radius
phase = utils.computePhase(self.c, angle, r)
waveabermap[np.where(norm_radius > self.PARAMS['2']/self.PARAMS['3'])] = float('nan')
waveabermap[np.where(norm_radius <= self.PARAMS['2']/self.PARAMS['3'])] = phase[np.where(norm_radius <= self.PARAMS['2']/self.PARAMS['3'])]
# #---- Austin's Method --------------------------------------------------------------
# for ny in range(newsize):
# for nx in range(newsize):
# xpos = ((nx - 1) * (sizeoffield / newsize) - (sizeoffield / 2))
# print(xpos)
# ypos = ((ny - 1) * (sizeoffield / newsize) - (sizeoffield / 2))
# angle, norm_radius = utils.cart2pol(xpos,ypos)
# norm_radius = norm_radius / (self.PARAMS['3'] / 2)
# r = norm_radius
# if norm_radius > self.PARAMS['2']/self.PARAMS['3']:
# waveabermap[nx,ny] = float('nan')
# else:
# phase = utils.computePhase(self.c, angle, r)
# waveabermap[nx,ny] = phase
# self.PARAMS['6'] += 1
return waveabermap
def Zphase_MahajanOSA(self):
phasemap = np.zeros((self.PARAMS['1'],self.PARAMS['1']))
phasemap = phasemap + phasemap*1j
sizeoffield = self.PARAMS['4']
B = 0.2 # fraction if the diffuse component;
A = 1 - B # raction of directed component;
peakx = 0 # normalized location of peak reflectance in x-direction
peaky = 0 # normalized location of peak reflectance in x-direction
p = 0 # 0.047 # set to zero to turn off the amplitude factor (Values from Burns et al in mm^(-2)
self.PARAMS['6'] = 0
# ----------Joel's Method --------------------------------
nx = z_adjust(np.arange(1, self.PARAMS['1'] + 1), sizeoffield, self.PARAMS['1'])
ny = z_adjust(np.arange(1, self.PARAMS['1'] + 1), sizeoffield, self.PARAMS['1'])
xx, yy = np.meshgrid(nx, ny)
angle, norm_radius = utils.cart2pol(xx,yy)
norm_radius = norm_radius / (float(self.PARAMS['2']) / 2.)
r = norm_radius
phase = utils.computePhase(self.c, angle, r)
d = np.sqrt((peakx - xx)**2 + (peaky - yy)**2);
SCfactor = B + A * 10**(-p * ((self.PARAMS['2'])**2) * d**2)
phase_result = SCfactor * np.exp(-1j * 2 * np.pi * phase / self.PARAMS['5'])
phasemap[np.where(norm_radius <= 1)] = phase_result[np.where(norm_radius <= 1)]
self.PARAMS['6'] = np.sum((norm_radius <= 1).astype(int))
# #-------- Austin's Method ---------------------------------
# newsize = self.PARAMS['1']
# for ny in np.arange(1, self.PARAMS['1'] + 1):
# for nx in np.arange(1, self.PARAMS['1'] + 1):
# xpos = (((float(nx) - 1.) * (float(sizeoffield) / float(newsize))) - (sizeoffield / 2.))
# ypos = (((float(ny) - 1.) * (float(sizeoffield) / float(newsize))) - (sizeoffield / 2.))
# angle, norm_radius = utils.cart2pol(xpos,ypos)
# norm_radius = float(norm_radius) / (float(self.PARAMS['2']) / 2.)
# r = norm_radius
# if norm_radius > 1:
# pass
# else:
# phase = utils.computePhase(self.c, angle, r)
# d = np.sqrt((peakx - xpos)**2 + (peaky - ypos)**2);
# SCfactor = B + A * 10**(-p * ((self.PARAMS['2'])**2) * d**2)
# phasemap[nx,ny] = SCfactor * np.exp(-1j * 2 * np.pi * phase / self.PARAMS['5'])
# self.PARAMS['6'] += 1
return phasemap
def direct_branch(self):
conv1_1 = convolve(layer = self.layer, ksize = 1, in_depth = self.layer_shape[-1],
out_depth = self.layer_shape[-1], padding = 'VALID')
return conv1_1