def forward(self, depth, trans0, trans1, rotate):
self.batchgrid3d = torch.zeros(torch.Size([depth.size(0)]) + self.grid3d.size())
for i in range(depth.size(0)):
self.batchgrid3d[i] = self.grid3d
self.batchgrid3d = Variable(self.batchgrid3d)
self.batchgrid = torch.zeros(torch.Size([depth.size(0)]) + self.grid.size())
for i in range(depth.size(0)):
self.batchgrid[i] = self.grid
self.batchgrid = Variable(self.batchgrid)
if depth.is_cuda:
self.batchgrid = self.batchgrid.cuda()
self.batchgrid3d = self.batchgrid3d.cuda()
x_ = self.batchgrid3d[:,:,:,0:1] * depth + trans0.view(-1,1,1,1).repeat(1, self.height, self.width, 1)
y_ = self.batchgrid3d[:,:,:,1:2] * depth + trans1.view(-1,1,1,1).repeat(1, self.height, self.width, 1)
z = self.batchgrid3d[:,:,:,2:3] * depth
#print(x.size(), y.size(), z.size())
rotate_z = rotate.view(-1,1,1,1).repeat(1,self.height, self.width,1) * np.pi
x = x_ * torch.cos(rotate_z) - y_ * torch.sin(rotate_z)
y = x_ * torch.sin(rotate_z) + y_ * torch.cos(rotate_z)
r = torch.sqrt(x**2 + y**2 + z**2) + 1e-5
#print(r)
theta = torch.acos(z/r)/(np.pi/2) - 1
#phi = torch.atan(y/x)
if depth.is_cuda:
phi = torch.atan(y/(x + 1e-5)) + np.pi * x.lt(0).type(torch.cuda.FloatTensor) * (y.ge(0).type(torch.cuda.FloatTensor) - y.lt(0).type(torch.cuda.FloatTensor))
else:
phi = torch.atan(y/(x + 1e-5)) + np.pi * x.lt(0).type(torch.FloatTensor) * (y.ge(0).type(torch.FloatTensor) - y.lt(0).type(torch.FloatTensor))
phi = phi/np.pi
output = torch.cat([theta,phi], 3)
return output
def forward(self, input1):
self.batchgrid3d = torch.zeros(torch.Size([input1.size(0)]) + self.grid3d.size())
for i in range(input1.size(0)):
self.batchgrid3d[i] = self.grid3d
self.batchgrid3d = Variable(self.batchgrid3d)
#print(self.batchgrid3d)
x = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,0:4]), 3)
y = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,4:8]), 3)
z = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,8:]), 3)
#print(x)
r = torch.sqrt(x**2 + y**2 + z**2) + 1e-5
#print(r)
theta = torch.acos(z/r)/(np.pi/2) - 1
#phi = torch.atan(y/x)
phi = torch.atan(y/(x + 1e-5)) + np.pi * x.lt(0).type(torch.FloatTensor) * (y.ge(0).type(torch.FloatTensor) - y.lt(0).type(torch.FloatTensor))
phi = phi/np.pi
output = torch.cat([theta,phi], 3)
return output
def forward(self, depth, trans0, trans1, rotate):
self.batchgrid3d = torch.zeros(torch.Size([depth.size(0)]) + self.grid3d.size())
for i in range(depth.size(0)):
self.batchgrid3d[i] = self.grid3d
self.batchgrid3d = Variable(self.batchgrid3d)
self.batchgrid = torch.zeros(torch.Size([depth.size(0)]) + self.grid.size())
for i in range(depth.size(0)):
self.batchgrid[i] = self.grid
self.batchgrid = Variable(self.batchgrid)
x = self.batchgrid3d[:,:,:,0:1] * depth + trans0.view(-1,1,1,1).repeat(1, self.height, self.width, 1)
y = self.batchgrid3d[:,:,:,1:2] * depth + trans1.view(-1,1,1,1).repeat(1, self.height, self.width, 1)
z = self.batchgrid3d[:,:,:,2:3] * depth
#print(x.size(), y.size(), z.size())
r = torch.sqrt(x**2 + y**2 + z**2) + 1e-5
#print(r)
theta = torch.acos(z/r)/(np.pi/2) - 1
#phi = torch.atan(y/x)
phi = torch.atan(y/(x + 1e-5)) + np.pi * x.lt(0).type(torch.FloatTensor) * (y.ge(0).type(torch.FloatTensor) - y.lt(0).type(torch.FloatTensor))
phi = phi/np.pi
#print(theta.size(), phi.size())
input_u = rotate.view(-1,1,1,1).repeat(1,self.height, self.width,1)
output = torch.cat([theta,phi], 3)
#print(output.size())
output1 = torch.atan(torch.tan(np.pi/2.0*(output[:,:,:,1:2] + self.batchgrid[:,:,:,2:] * input_u[:,:,:,:]))) /(np.pi/2)
output2 = torch.cat([output[:,:,:,0:1], output1], 3)
return output2
def set_stats_get_pairs(self, embeddings, labels, indices_tuple):
a1, p, a2, _ = lmu.convert_to_pairs(indices_tuple, labels)
if len(a1) == 0 or len(a2) == 0:
return [None]*4
anchors, positives = embeddings[a1], embeddings[p]
keep_mask = (labels[a1].unsqueeze(1) != labels.unsqueeze(0)).float()
centers = (anchors + positives) / 2
ap_dist = torch.nn.functional.pairwise_distance(anchors, positives, 2)
nc_dist = torch.norm(centers - embeddings.unsqueeze(1), p=2, dim=2).t()
angles = torch.atan(ap_dist.unsqueeze(1) / (2*nc_dist))
average_angle = torch.sum(angles*keep_mask) / torch.sum(keep_mask)
self.average_angle = np.degrees(average_angle.item())
return anchors, positives, keep_mask, a1
def cartesian2elliptic(pt, S, L):
# cartesian to elliptic coordinates
# pt: (3,)
# S: (3,)
# L: (3,)
f = torch.sqrt(torch.sum((L - S)**2)) / 2
L = torch.sqrt(torch.sum((pt - S)**2)) + torch.sqrt(torch.sum((pt - L)**2))
a = L / 2
b = torch.sqrt(a**2 - f**2)
if torch.isnan(b):
return None
else:
elliptic_pt = torch.zeros(3)
elliptic_pt[0] = L
elliptic_pt[1] = torch.acos(pt[2] / b)
phi_yplus = (torch.atan(pt[1] / (pt[0] + 1e-8))) * (pt[1] >= 0)
phi_yplus = phi_yplus + (phi_yplus < 0).int() * (np.pi)
phi_yminus = (torch.atan(pt[1] / (pt[0] + 1e-8))) * (pt[1] < 0)
phi_yminus = phi_yminus + (phi_yminus > 0).int() * (-np.pi)
elliptic_pt[2] = phi_yminus + phi_yplus
return elliptic_pt
def grasps2bboxes(labels):
x, y, tan_theta, w, h = labels[:, 0], labels[:, 1], labels[:, 2], labels[:, 3], labels[:, 4]
theta = torch.atan(tan_theta)
x0, y0 = x-w/2*torch.cos(theta) + h/2*torch.sin(theta), y - w/2*torch.sin(theta) - h/2*torch.cos(theta) # 数据集是按逆时针顺序给出4个顶点的，这里也跟随逆时针序
x1, y1 = x-w/2*torch.cos(theta) - h/2*torch.sin(theta), y - w/2*torch.sin(theta) + h/2*torch.cos(theta)
x2, y2 = x+w/2*torch.cos(theta) - h/2*torch.sin(theta), y + w/2*torch.sin(theta) + h/2*torch.cos(theta)
x3, y3 = x+w/2*torch.cos(theta) + h/2*torch.sin(theta), y + w/2*torch.sin(theta) - h/2*torch.cos(theta)
batch_size = len(labels)
point0 = torch.cat([x0.reshape(batch_size, 1), y0.reshape(batch_size, 1)], dim=1).cpu().numpy().astype(np.int32)
point1 = torch.cat([x1.reshape(batch_size, 1), y1.reshape(batch_size, 1)], dim=1).cpu().numpy().astype(np.int32)
point2 = torch.cat([x2.reshape(batch_size, 1), y2.reshape(batch_size, 1)], dim=1).cpu().numpy().astype(np.int32)
point3 = torch.cat([x3.reshape(batch_size, 1), y3.reshape(batch_size, 1)], dim=1).cpu().numpy().astype(np.int32)
return point0, point1, point2, point3
def box_ciou(b1, b2):
"""
输入为：
----------
b1: tensor, shape=(batch, feat_w, feat_h, anchor_num, 4), xywh
b2: tensor, shape=(batch, feat_w, feat_h, anchor_num, 4), xywh
返回为：
-------
ciou: tensor, shape=(batch, feat_w, feat_h, anchor_num, 1)
"""
# 求出预测框左上角右下角
b1_xy = b1[..., :2]
b1_wh = b1[..., 2:4]
b1_wh_half = b1_wh / 2.
b1_mins = b1_xy - b1_wh_half
b1_maxes = b1_xy + b1_wh_half
# 求出真实框左上角右下角
b2_xy = b2[..., :2]
b2_wh = b2[..., 2:4]
b2_wh_half = b2_wh / 2.
b2_mins = b2_xy - b2_wh_half
b2_maxes = b2_xy + b2_wh_half
# 求真实框和预测框所有的iou
intersect_mins = torch.max(b1_mins, b2_mins)
intersect_maxes = torch.min(b1_maxes, b2_maxes)
intersect_wh = torch.max(intersect_maxes - intersect_mins, torch.zeros_like(intersect_maxes))
intersect_area = intersect_wh[..., 0] * intersect_wh[..., 1]
b1_area = b1_wh[..., 0] * b1_wh[..., 1]
b2_area = b2_wh[..., 0] * b2_wh[..., 1]
union_area = b1_area + b2_area - intersect_area
iou = intersect_area / torch.clamp(union_area, min=1e-6)
# 计算中心的差距
center_distance = torch.sum(torch.pow((b1_xy - b2_xy), 2), axis=-1)
# 找到包裹两个框的最小框的左上角和右下角
enclose_mins = torch.min(b1_mins, b2_mins)
enclose_maxes = torch.max(b1_maxes, b2_maxes)
enclose_wh = torch.max(enclose_maxes - enclose_mins, torch.zeros_like(intersect_maxes))
# 计算对角线距离
enclose_diagonal = torch.sum(torch.pow(enclose_wh, 2), axis=-1)
ciou = iou - 1.0 * (center_distance) / torch.clamp(enclose_diagonal, min=1e-6)
v = (4 / (math.pi ** 2)) * torch.pow((torch.atan(b1_wh[..., 0] / torch.clamp(b1_wh[..., 1], min=1e-6)) - torch.atan(
b2_wh[..., 0] / torch.clamp(b2_wh[..., 1], min=1e-6))), 2)
alpha = v / torch.clamp((1.0 - iou + v), min=1e-6)
ciou = ciou - alpha * v
return ciou
def forward(self, input, target):
# F.cross_entropy(input, target, weight=self.weight, ignore_index=self.ignore_index, reduction=self.reduction)
err = cross_entropy(input,
target,
weight=self.weight,
ignore_index=self.ignore_index,
reduction=self.reduction)
err = 10 * torch.atan(err) + err
# return cross_entropy(input, target, weight=self.weight, ignore_index=self.ignore_index, reduction=self.reduction)
return err
def moveIBLwithParamsTorch(posCenters, depths, radius, translation, rotationAzimuth):
# Translation should be specified as a (x, y, z) translation vector
# Rotation should be specified as an angle in radians around the origin
if configInfos.coordinateSystem == "xyz" and posCenters.shape[-1] == 3:
# We have to convert everything in spherical coordinates first
posCenters, _ = xyz2sphericalTorch(posCenters)
else:
posCenters = posCenters.clone() # Ensure we do not modify something important
# First, we apply the rotation (with spherical coordinates)
posCenters = posCenters.clone() # Ensure we do not modify something important
posCenters[:, 1].sub_(rotationAzimuth)
# Then, we convert to xyz (easier to translate than with spherical coordinates)
xyz = spherical2xyzTorch(posCenters[:, 0], posCenters[:, 1], norm=depths.clone())
# Apply the translation
# Careful : we translate the _lights_ so we should go in the opposite
# direction than the direction to the crop
xyz[:, 2].add_(translation)
# We convert the coordinates back into spherical
newPosCenters, newDepths = xyz2sphericalTorch(xyz)
# We adjust the angular size of each light
# We assume that the area lights normal are always towards the virtual
# center of projection, even if we moved in the scene
# (as if the lights were actually spheres with the same angular area
# from any reference point in the panorama)
# To do that, we first convert the angular area from the original point
# to an actual area using the distance
# IMPORTANT : this assumes `radius` to be in radians, which IS NOT HOW
# THEY ARE SAVED IN THE PARAMETERS FILE
radiusMeters = 2 * depths * torch.tan(radius/2)
# From there, we do the inverse computation, but now with the depth
# at the new virtual viewpoint
# TODO : there is one *2 that could be removed from both formulaes
# currently keeping it just to be more clear
newRadius = 2 * torch.atan(radiusMeters / 2 / newDepths)
newPosCenters[:, 1].add_(2*np.pi)
newPosCenters[:, 1] = torch.fmod(newPosCenters[:, 1], 2*np.pi)
if torch.any(torch.isnan(newPosCenters)):
breakpoint()
return newPosCenters, newDepths, newRadius
def aten_atan(inputs, attributes, scope):
inp = inputs[0]
ctx = current_context()
net = ctx.network
if ctx.is_tensorrt and has_trt_tensor(inputs):
layer = net.add_unary(inp, trt.UnaryOperation.ATAN)
output = layer.get_output(0)
output.name = scope
layer.name = scope
return [output]
elif ctx.is_tvm and has_tvm_tensor(inputs):
raise NotImplementedError
return [torch.atan(inp)]
def compute_c_iou(bboxes1, bboxes2):
"bboxes1 of shape [N, 4] and bboxes2 of shape [N, 4]"
# assert bboxes1.size(0) == bboxes2.size(0)
w1 = bboxes1[:, 2] - bboxes1[:, 0]
h1 = bboxes1[:, 3] - bboxes1[:, 1]
w2 = bboxes2[:, 2] - bboxes2[:, 0]
h2 = bboxes2[:, 3] - bboxes2[:, 1]
area1 = w1 * h1
area2 = w2 * h2
min_x2 = torch.min(bboxes1[:, 2], bboxes2[:, 2])
max_x1 = torch.max(bboxes1[:, 0], bboxes2[:, 0])
min_y2 = torch.min(bboxes1[:, 3], bboxes2[:, 3])
max_y1 = torch.max(bboxes1[:, 1], bboxes2[:, 1])
inter = torch.clamp(min_x2 - max_x1, min=0) * torch.clamp(min_y2 - max_y1,
min=0)
union = area1 + area2 - inter
center_x1 = (bboxes1[:, 2] + bboxes1[:, 0]) / 2
center_y1 = (bboxes1[:, 3] + bboxes1[:, 1]) / 2
center_x2 = (bboxes2[:, 2] + bboxes2[:, 0]) / 2
center_y2 = (bboxes2[:, 3] + bboxes2[:, 1]) / 2
# squared euclidian distance between the target and predicted bboxes
d_2 = (center_x1 - center_x2)**2 + (center_y1 - center_y2)**2
# squared length of the diagonal of the minimum bbox that encloses both bboxes
c_2 = (torch.max(bboxes1[:, 2], bboxes2[:, 2]) -
torch.min(bboxes1[:, 0], bboxes2[:, 0]))**2 + (
torch.max(bboxes1[:, 3], bboxes2[:, 3]) -
torch.min(bboxes1[:, 1], bboxes2[:, 1]))**2
iou = inter / union
v = 4 / np.pi**2 * (torch.atan(w1 / h1) - torch.atan(w2 / h2))**2
with torch.no_grad():
S = 1 - iou
alpha = v / (S + v + eps)
c_iou = iou - (d_2 / c_2 + alpha * v)
c_iou = torch.clamp(c_iou, min=-1.0, max=1.0)
return c_iou
def forward(self, input1, input2):
self.batchgrid3d = torch.zeros(torch.Size([input1.size(0)]) + self.grid3d.size())
for i in range(input1.size(0)):
self.batchgrid3d[i] = self.grid3d
self.batchgrid3d = Variable(self.batchgrid3d)
self.batchgrid = torch.zeros(torch.Size([input1.size(0)]) + self.grid.size())
for i in range(input1.size(0)):
self.batchgrid[i] = self.grid
self.batchgrid = Variable(self.batchgrid)
#print(self.batchgrid3d)
x = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,0:4]), 3)
y = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,4:8]), 3)
z = torch.sum(torch.mul(self.batchgrid3d, input1[:,:,:,8:]), 3)
#print(x)
r = torch.sqrt(x**2 + y**2 + z**2) + 1e-5
#print(r)
theta = torch.acos(z/r)/(np.pi/2) - 1
#phi = torch.atan(y/x)
phi = torch.atan(y/(x + 1e-5)) + np.pi * x.lt(0).type(torch.FloatTensor) * (y.ge(0).type(torch.FloatTensor) - y.lt(0).type(torch.FloatTensor))
phi = phi/np.pi
input_u = input2.view(-1,1,1,1).repeat(1,self.height, self.width,1)
output = torch.cat([theta,phi], 3)
output1 = torch.atan(torch.tan(np.pi/2.0*(output[:,:,:,1:2] + self.batchgrid[:,:,:,2:] * input_u[:,:,:,:]))) /(np.pi/2)
output2 = torch.cat([output[:,:,:,0:1], output1], 3)
return output2
def bbox_ciou(box1, box2, eps: float = 1e-9):
# Returns the IoU of box1 to box2. box1 is 4, box2 is nx4
box2 = box2.T
# Get the coordinates of bounding boxes
# transform from xywh to xyxy
b1_x1, b1_x2 = box1[0] - box1[2] / 2, box1[0] + box1[2] / 2
b1_y1, b1_y2 = box1[1] - box1[3] / 2, box1[1] + box1[3] / 2
b2_x1, b2_x2 = box2[0] - box2[2] / 2, box2[0] + box2[2] / 2
b2_y1, b2_y2 = box2[1] - box2[3] / 2, box2[1] + box2[3] / 2
# Intersection area
inter = (torch.min(b1_x2, b2_x2) - torch.max(b1_x1, b2_x1)).clamp(0) * \
(torch.min(b1_y2, b2_y2) - torch.max(b1_y1, b2_y1)).clamp(0)
# Union Area
w1, h1 = b1_x2 - b1_x1, b1_y2 - b1_y1 + eps
w2, h2 = b2_x2 - b2_x1, b2_y2 - b2_y1 + eps
union = w1 * h1 + w2 * h2 - inter + eps
iou = inter / union
cw = torch.max(b1_x2, b2_x2) - torch.min(
b1_x1, b2_x1) # convex (smallest enclosing box) width
ch = torch.max(b1_y2, b2_y2) - torch.min(b1_y1, b2_y1) # convex height
c2 = cw**2 + ch**2 + eps # convex diagonal squared
# center distance squared
rho2 = ((b2_x1 + b2_x2 - b1_x1 - b1_x2)**2 +
(b2_y1 + b2_y2 - b1_y1 - b1_y2)**2) / 4
v = (4 / math.pi**2) * torch.pow(
torch.atan(w2 / h2) - torch.atan(w1 / h1), 2)
with torch.no_grad():
alpha = v / ((1 + eps) - iou + v)
return iou - (rho2 / c2 + v * alpha) # CIoU
def forward(self,
lstm_output,
various_observations,
opponent_observations=None):
# check and improve it
player_scalar_out = self.pre_forward(various_observations)
del various_observations
# AlphaStar: The baseline extracts those same observations from `opponent_observations`.
if opponent_observations is not None:
opponenet_scalar_out = self.pre_forward(opponent_observations)
del opponent_observations
else:
opponenet_scalar_out = torch.zeros_like(player_scalar_out)
# AlphaStar: These features are all concatenated together to yield `action_type_input`
action_type_input = torch.cat(
[lstm_output, player_scalar_out, opponenet_scalar_out], dim=1)
del lstm_output, player_scalar_out, opponenet_scalar_out
print("action_type_input.shape:",
action_type_input.shape) if debug else None
# AlphaStar: passed through a linear of size 256
x = self.embed_fc(action_type_input)
del action_type_input
print("x.shape:", x.shape) if debug else None
# AlphaStar: then passed through 16 ResBlocks with 256 hidden units and layer normalization,
# Note: tje layer normalization is already inside each resblock
x = x.unsqueeze(-1)
for resblock in self.resblock_stack:
x = resblock(x)
x = x.squeeze(-1)
print("x.shape:", x.shape) if debug else None
# AlphaStar: passed through a ReLU
x = F.relu(x)
# AlphaStar: then passed through a linear with 1 hidden unit.
baseline = self.out_fc(x)
print("baseline:", baseline) if debug else None
# AlphaStar: This baseline value is transformed by ((2.0 / PI) * atan((PI / 2.0) * baseline)) and is used as the baseline value
out = (2.0 / np.pi) * torch.atan((np.pi / 2.0) * baseline)
print("out:", out) if debug else None
del x, baseline
return out
def get_alpha(rot):
"""Generate alpha value from predicted CLSREG array
Args:
rot (torch.Tensor): rotation CLSREG array: (B, num_classes, 8)
[bin1_cls[0], bin1_cls[1], bin1_sin, bin1_cos,
bin2_cls[0], bin2_cls[1], bin2_sin, bin2_cos]
Returns:
torch.Tensor: (B, num_classes, 1)
"""
alpha1 = torch.atan(
rot[:, :, 2:3] / rot[:, :, 3:4]) + (-0.5 * np.pi)
alpha2 = torch.atan(
rot[:, :, 6:7] / rot[:, :, 7:8]) + (0.5 * np.pi)
# Model is not decisive at index overlap region
# Could be unstable for the alpha estimation
# idx1 = (rot[:, :, 1:2] > rot[:, :, 0:1]).float()
# idx2 = (rot[:, :, 5:6] > rot[:, :, 4:5]).float()
# alpha = (alpha1 * idx1 + alpha2 * idx2)
# alpha /= (idx1 + idx2 + ((idx1 + idx2) == 0))
idx = (rot[:, :, 1:2] > rot[:, :, 5:6]).float()
alpha = alpha1 * idx + alpha2 * (1 - idx)
return alpha
def make_z(self, skew_idx_x, skew_idx_y):
skew = torch.tensor(
(1 / self.n_skews * skew_idx_x, 1 / self.n_skews * skew_idx_y))
# apply skew function
xc = torch.tensor((self.center[1], self.center[0])).float()
x, y = torch.meshgrid(
[torch.arange(self.shape[1]),
torch.arange(self.shape[0])])
pos = torch.empty(x.shape + (2, ))
pos[:, :, 0] = x
pos[:, :, 1] = y
z = (1 / math.pi) * torch.atan((pos - xc) @ skew) + \
(1 / 2)
return z
def get_angles_smass_in_rag(edges, segmentation):
"""
CAUTION: this is specificly targeted for the leptin dataset
"""
sigm_flatness = torch.numel(segmentation) / 500
sigm_shift = 0.8
c_norm = math.sqrt(segmentation.shape[-1]**2 + segmentation.shape[-2]**2) / 8
nodes = torch.unique(segmentation)
random_rotation = (torch.rand((1,)).item() * 2) - 1
meshgrid = torch.stack(torch.meshgrid(torch.arange(segmentation.shape[0], device=segmentation.device),
torch.arange(segmentation.shape[1], device=segmentation.device)))
one_hot = segmentation[None] == nodes[:, None, None]
sup_sizes = one_hot.flatten(1).sum(-1)
cart_cms = (one_hot[None] * meshgrid[:, None]).flatten(2).sum(2) / sup_sizes[None]
a = (cart_cms[0].float() - 390) # This is not the image center because the Leptin data is not exactly concentric to it
b = (cart_cms[1].float() - 340)
c = torch.sqrt(a**2 + b**2)
normed_c = torch.sigmoid(c / c_norm - 1) * 2 - 1
ang = torch.atan(a/(b + 1e-10)).abs()
ang[(b < 0) & (a >= 0)] = np.pi - ang[(b < 0) & (a >= 0)]
ang[(b < 0) & (a < 0)] = np.pi + ang[(b < 0) & (a < 0)]
ang[(b >= 0) & (a < 0)] = 2 * np.pi - ang[(b >= 0) & (a < 0)]
ang /= np.pi
ang -= 1
# ang += random_rotation
# ang[a > 1] = (ang[a > 1] - 1) - 1
# ang[ang < -1] = 1 + (ang[ang < -1] + 1)
cms = torch.stack([ang, normed_c, c], 1)
vec = cart_cms[:, edges[0]] - cart_cms[:, edges[1]]
angles = torch.atan(vec[0] / (vec[1] + np.finfo(float).eps))
angles = 2 * angles / np.pi
sup_sizes = torch.sigmoid(sup_sizes / sigm_flatness - sigm_shift) * 2 - 1
return angles, torch.cat([sup_sizes[:, None], cms[:, :-1]], 1), cms[:, -1], cart_cms, sup_sizes
def cartesian2polar(xyz):
# B, N, K, C or B N C
len4 = False
B, N, C = xyz.shape[0], xyz.shape[1], xyz.shape[-1]
if len(xyz.shape) == 4:
xyz = xyz.reshape(B, -1, C)
len4 = True
ro = xyz.norm(dim=2)
theta = torch.atan(xyz[:, :, 1] / (xyz[:, :, 0] + 1e-9))
phi = torch.acos(xyz[:, :, 2] / (ro + 1e-9))
sphere = torch.stack([ro, theta, phi]).permute(1, 2, 0)
if len4:
sphere = sphere.reshape(B, N, -1, C)
return sphere
def forward(self, p1s: MaskedTensor, p2s: MaskedTensor) -> torch.Tensor:
"""
Angle of the X/Y axis between two points
:param p1s: MaskedTensor (Points, Batch, Len, Dims)
:param p2s: MaskedTensor (Points, Batch, Len, Dims)
:return: torch.Tensor (Points, Batch, Len)
"""
dims = p1s.shape[-1]
d = p2s - p1s # (Points, Batch, Len, Dims)
xs, ys = d.split([1] * dims, dim=3)[:2] # (Points, Batch, Len, 1)
slopes = ys.div(xs, in_place=True).zero_filled().squeeze(axis=3)
slopes[slopes != slopes] = 0 # Fix NaN, TODO think of faster way
return torch.atan(slopes)
def set_stats_get_triplets(self, embeddings, labels, indices_tuple):
anchor_idx, positive_idx, negative_idx = lmu.convert_to_triplets(
indices_tuple, labels, self.triplets_per_anchor)
self.num_anchors = len(anchor_idx)
if self.num_anchors == 0:
return [None] * 4
anchors, positives, negatives = embeddings[anchor_idx], embeddings[
positive_idx], embeddings[negative_idx]
centers = (anchors + positives) / 2
ap_dist = torch.nn.functional.pairwise_distance(anchors, positives, 2)
nc_dist = torch.nn.functional.pairwise_distance(negatives, centers, 2)
self.average_angle = np.degrees(
torch.mean(torch.atan(ap_dist / (2 * nc_dist))).item())
alpha = self.maybe_mask_param(self.alpha, labels[anchor_idx])
return anchors, positives, negatives, alpha
def get_normal_anlges(image, eps=EPS):
"""Calculate the normal direction of edges.
Ref: https://github.com/nv-tlabs/STEAL/blob/master/utils/edges_nms.m
"""
first_grads = spatial_gradient(gaussian_blur2d(image, (5, 5), (2, 2)))
second_grad_x = spatial_gradient(first_grads[:, :, 0, :, :].squeeze_(2))
second_grad_y = spatial_gradient(first_grads[:, :, 1, :, :].squeeze_(2))
grad_xx = second_grad_x[:, :, 0, :, :].squeeze_()
grad_xy = second_grad_y[:, :, 0, :, :].squeeze_()
grad_yy = second_grad_y[:, :, 1, :, :].squeeze_()
angle = torch.atan(grad_yy * torch.sign(-(grad_xy + eps)) /
(grad_xx + eps))
return angle
def orientation_decode(ori, locations, flip_mask=None):
'''
:param pred_ori: location orientations (N, 2)
:param locations: object locations (N, 3)
:return: global orientations
'''
offsets = torch.atan(locations[:, 0] / locations[:, 2] + 1e-7)
alpha = torch.atan(ori[:, 0] / (ori[:, 1] + 1e-7))
cos_pos_idx = (ori[:, 1] >= 0).nonzero()
cos_neg_idx = (ori[:, 1] < 0).nonzero()
alpha[cos_pos_idx] = alpha[cos_pos_idx] - PI / 2
alpha[cos_neg_idx] = alpha[cos_neg_idx] + PI / 2
rotys = alpha + offsets
roty_large_idx = (rotys > PI).nonzero()
roty_small_idx = (rotys < -PI).nonzero()
if len(roty_large_idx) != 0:
rotys[roty_large_idx] = rotys[roty_large_idx] - 2 * PI
if len(roty_small_idx) != 0:
rotys[roty_small_idx] = rotys[roty_small_idx] + 2 * PI
fm = flip_mask.view(-1, 1).squeeze(1)
rotys_flip = fm.float() * rotys
rotys_flip_pos_idx = rotys_flip > 0
rotys_flip_neg_idx = rotys_flip < 0
rotys_flip[rotys_flip_pos_idx] -= PI
rotys_flip[rotys_flip_neg_idx] += PI
rotys_all = fm.float() * rotys_flip + (1 - fm.float()) * rotys
return rotys_all.unsqueeze(1), alpha.unsqueeze(1)
def get_feature(n, points, adj):
"""
:param n: points # of graph
:param points: torch tensor, (n, 2)
:param adj: torch tensor, (n, n)
:return: edge feat, angle feat
"""
points_1 = points.reshape(n, 1, 2).repeat(1, n, 1)
points_2 = points.reshape(1, n, 2).repeat(n, 1, 1)
edge_feat = torch.sqrt(torch.sum((points_1 - points_2) ** 2, dim=2))
edge_feat = edge_feat / torch.max(edge_feat)
angle_feat = torch.atan((points_1[:, :, 1] - points_2[:, :, 1]) / (points_1[:, :, 0] - points_2[:, :, 0] + 1e-8))
angle_feat = 2 * angle_feat / math.pi
return edge_feat, angle_feat
def forward(self, x):
out = self.conv1(x)
out = self.conv2(out)
out = self.conv3(out)
#flatten layer
out_size = list(out.size())
# print(out_size)
# out_size[0] -->batch_size or test size as desired
out = out.view(out_size[0], -1)
# print(out.size())
out = self.fc1(out)
out = self.fc2(out)
out = torch.mul(torch.atan(out), 2)
return out
def two_points_angle(point1, point2):
'''
point1
point2 : center
range : (-pi ~ pi)
|
(pi-atan(y/x)) -+ | ++ (atan(y/x))
______|______
|
-- | +-
(-pi + atan(y/x) | (atan(y/x))
'''
point1_x, point1_y = point1
point2_x, point2_y = point2
x_positive_ids = point1_x >= point2_x
y_positive_ids = point1_y > point2_y
x_negative_ids = point1_x <= point2_x
y_negative_ids = point1_y < point2_y
first_quadrant_ids = (x_positive_ids & y_positive_ids).type(
torch.cuda.FloatTensor)
second_quadrant_ids = (x_negative_ids & y_positive_ids).type(
torch.cuda.FloatTensor)
third_quadrant_ids = (x_negative_ids & y_negative_ids).type(
torch.cuda.FloatTensor)
fourth_quadrant_ids = (x_positive_ids & y_negative_ids).type(
torch.cuda.FloatTensor)
first_quadrant_angle = first_quadrant_ids * (torch.atan(
(point1_y - point2_y) / (point1_x - point2_x)))
second_quadrant_angle = second_quadrant_ids * (np.pi + torch.atan(
(point1_y - point2_y) / (point1_x - point2_x)))
third_quadrant_angle = third_quadrant_ids * (-np.pi + torch.atan(
(point1_y - point2_y) / (point1_x - point2_x)))
fourth_quadrant_angle = fourth_quadrant_ids * (torch.atan(
(point1_y - point2_y) / (point1_x - point2_x)))
angle = first_quadrant_angle + second_quadrant_angle + third_quadrant_angle + fourth_quadrant_angle
return angle
def box_ciou(box1, box2): # box format: (cx, cy, w, h)
cx1, cy1, w1, h1 = box1.T
cx2, cy2, w2, h2 = box2.T
b1_x1, b1_x2 = cx1 - w1 / 2, cx1 + w1 / 2
b1_y1, b1_y2 = cy1 - h1 / 2, cy1 + h1 / 2
b2_x1, b2_x2 = cx2 - w2 / 2, cx2 + w2 / 2
b2_y1, b2_y2 = cy2 - h2 / 2, cy2 + h2 / 2
ws = torch.min(b1_x2, b2_x2) - torch.max(b1_x1, b2_x1)
hs = torch.min(b1_y2, b2_y2) - torch.max(b1_y1, b2_y1)
inter = ws.clamp(min=0) * hs.clamp(min=0)
union = w1 * h1 + w2 * h2 - inter
iou = inter / union
v = (2 / math.pi * (torch.atan(w2 / h2) - torch.atan(w1 / h1)))**2
with torch.no_grad():
alpha = v / (1 - iou + v)
rho2 = (cx1 - cx2)**2 + (cy1 - cy2)**2
cw = torch.max(b1_x2, b2_x2) - torch.min(b1_x1, b2_x1)
ch = torch.max(b1_y2, b2_y2) - torch.min(b1_y1, b2_y1)
c2 = cw**2 + ch**2
return iou - (rho2 / c2 + v * alpha)
def step(self, closure=None):
"""Performs a single optimization step.
Arguments:
closure (callable, optional): A closure that reevaluates the model
and returns the loss.
"""
loss = None
if closure is not None:
loss = closure()
for group in self.param_groups:
weight_decay = group['weight_decay']
momentum = group['momentum']
dampening = group['dampening']
nesterov = group['nesterov']
for p in group['params']:
if p.grad is None:
continue
d_p = p.grad.data
if cfg.SOLVER.TAN:
d_p = cfg.SOLVER.A * torch.atan(d_p * cfg.SOLVER.B)
# d_p = 0.3 * torch.atan(d_p*4.5)
# d_p = 0.05 * torch.atan(d_p*1.5)
# d_p = 0.7 * torch.atan(d_p*0.7)
# d_p = 2 * (1 / (1 + torch.exp(-1 * d_p)) - 0.5)
# 1.5 * (1 / (1 + np.exp(-1 * x)) - 0.5) + 0.1 * np.sign(x)
if weight_decay != 0:
d_p.add_(weight_decay, p.data)
if momentum != 0:
param_state = self.state[p]
if 'momentum_buffer' not in param_state:
buf = param_state['momentum_buffer'] = torch.clone(
d_p).detach()
else:
buf = param_state['momentum_buffer']
buf.mul_(momentum).add_(1 - dampening, d_p)
if nesterov:
d_p = d_p.add(momentum, buf)
else:
d_p = buf
p.data.add_(-group['lr'], d_p)
return loss
def get_regions_masks(self):
regions_masks = []
# create sectors
R = self.img_size[0] // 2
section_regions = [(ring_idx / self.n_sections * R,
(ring_idx + 1) / self.n_sections * R)
for ring_idx in range(self.n_sections)]
# concatenate first and last regions
orientation_regions = [
(-np.pi / 2, -np.pi / 2 + 1 / self.n_orientations * np.pi / 2)
]
offset = -np.pi / 2 + 1 / self.n_orientations * np.pi / 2
orientation_regions += [
(offset + wedge_idx / self.n_orientations * np.pi,
offset + (wedge_idx + 1) / self.n_orientations * np.pi)
for wedge_idx in range(self.n_orientations - 1)
]
grid_x, grid_y = torch.meshgrid(torch.range(0, R - 1, 1),
torch.range(-R, R - 1, 1))
grid_r = (grid_x**2 + grid_y**2).sqrt()
grid_theta = torch.atan(grid_y / grid_x)
# fill feature vector
for section_region in section_regions:
r1 = section_region[0]
r2 = section_region[1]
# edge region
theta1 = orientation_regions[0][0]
theta2 = orientation_regions[0][1]
region_mask = (grid_r >= r1) & (grid_r < r2) & (
((grid_theta >= theta1) & (grid_theta < theta2)) |
((grid_theta >= -offset) & (grid_theta <= np.pi / 2)))
regions_masks.append(region_mask)
# inner region
for orientation_region in orientation_regions[1:]:
theta1 = orientation_region[0]
theta2 = orientation_region[1]
region_mask = (grid_r >= r1) & (grid_r < r2) & (
grid_theta >= theta1) & (grid_theta < theta2)
regions_masks.append(region_mask)
return regions_masks
def unitvec2azimuthelevation(
x: Union[np.ndarray, torch.Tensor]) -> Union[np.ndarray, torch.Tensor]:
"""
Convert 3-D unit vectors to (azimuth, elevation) values
:param x: shape [BATCH_SIZE, TIME, CLASS, 3]
:return: shape [BATCH_SIZE, TIME, CLASS * 2]
"""
assert len(x.shape) == 4 and x.shape[-1] == 3
if type(x) == np.ndarray:
azim = np.arctan2(x[:, :, :, 1], x[:, :, :, 0])
elev = np.arctan(x[:, :, :, 2])
return np.concatenate((azim, elev), -1)
elif type(x) == torch.Tensor:
azim = torch.atan2(x[:, :, :, 1], x[:, :, :, 0])
elev = torch.atan(x[:, :, :, 2])
return torch.cat((azim, elev), -1)
def draw_flow(self, alpha=1):
assert self.field is not None, "please create a field"
field = self.field.detach()
pi = 3.141592653
deltay = field[:, 1:]
deltax = field[:, :1]
h = (torch.atan(deltay / (deltax + 1e-7)) / (2 * pi) + 0.25 +
(deltax >= 0) * 0.5).cpu()
s = alpha * ((deltax**2 + deltay**2)**0.5 / 2).cpu()
v = torch.ones(h.shape)
color_field = torch.cat([h, s, v], dim=1).permute([0, 2, 3, 1])
l = []
for f in color_field.numpy():
l.append(skimage.color.hsv2rgb(f))
color_field = torch.tensor(l).permute([0, 3, 1, 2])
return color_field
def get_obs(self, x):
theta = torch.atan(
torch.abs(x[:, 1]) / (torch.abs(x[:, 0]) + self.tol))
theta = torch.where((x[:, 0] >= 0) & (x[:, 1] < 0), -theta, theta)
theta = torch.where((x[:, 0] < 0) & (x[:, 1] >= 0), np.pi - theta,
theta)
theta = torch.where((x[:, 0] < 0) & (x[:, 1] < 0), theta - np.pi,
theta)
new_theta_dot = x[:, 2] + (3 * self.g /
(2 * self.l) * torch.sin(theta) + 3 /
(self.m * self.l**2) * x[:, 3]) * self.dt
new_theta = theta + new_theta_dot * self.dt
new_theta_dot = torch.clamp(new_theta_dot, min=-8, max=8)
out_obs = torch.stack(
(torch.cos(new_theta), torch.sin(new_theta), new_theta_dot), dim=1)
return out_obs, theta
def normals_to_angles(normals):
'''
Given a batch of normals at each time step, converts to a 2D angle representation.
normals : B x T x N x 3
'''
x2y2 = torch.norm(normals[:, :, :, :2], dim=3)
theta = torch.atan(x2y2 / normals[:, :, :, 2]).unsqueeze(
3) # norm(x, y) / z
theta[
theta <
0] += np.pi # make angles from 0 to pi rather than discontinously from pi/2 to -pi/2
phi = torch.atan2(normals[:, :, :, 1], normals[:, :, :,
0]).unsqueeze(3) # y / x
phi[phi < 0] += 2.0 * np.pi # make angles from 0 to 2pi rather -pi to pi
angles = torch.cat([theta, phi], dim=3)
return angles
def evaluate_function(
j
): # Evaluate function over Rs[j] x Rs[j+1] fibers, each of size I[j]
Xs = []
for k, t in enumerate(tensors):
if tensors[k].cores[j].dim() == 3: # TT core
V = torch.einsum('ai,ibj,jc->abc',
(t_linterfaces[k][j], tensors[k].cores[j],
t_rinterfaces[k][j]))
else: # CP factor
V = torch.einsum('ai,bi,ic->abc',
(t_linterfaces[k][j], tensors[k].cores[j],
t_rinterfaces[k][j]))
Xs.append(V.flatten())
eval_start = time.time()
evaluation = f(*Xs)
info['eval_time'] += time.time() - eval_start
if _minimize:
evaluation = np.pi / 2 - torch.atan(
evaluation - info['min']
) # Function used by I. Oseledets for TT minimization in ttpy
evaluation_argmax = torch.argmax(evaluation)
eval_min = torch.tan(np.pi / 2 -
evaluation[evaluation_argmax]) + info['min']
if info['min'] == 0 or eval_min < info['min']:
coords = np.unravel_index(evaluation_argmax,
[Rs[j], Is[j], Rs[j + 1]])
info['min'] = eval_min
info['argmin'] = tuple(lsets[j][coords[0]][1:]) + tuple(
[coords[1]]) + tuple(rsets[j][coords[2]][:-1])
# Check for nan/inf values
if evaluation.dim() == 2:
evaluation = evaluation[:, 0]
invalid = (torch.isnan(evaluation) | torch.isinf(evaluation)).nonzero()
if len(invalid) > 0:
invalid = invalid[0].item()
raise ValueError(
'Invalid return value for function {}: f({}) = {}'.format(
function,
', '.join('{:g}'.format(x[invalid].numpy()) for x in Xs),
f(*[x[invalid:invalid + 1][:, None] for x in Xs]).item()))
V = torch.reshape(evaluation, [Rs[j], Is[j], Rs[j + 1]])
info['nsamples'] += V.numel()
return V
def forward(self, input):
self.batchgrid = torch.zeros(torch.Size([input.size(0)]) + self.grid.size() )
#print(self.batchgrid.size())
for i in range(input.size(0)):
self.batchgrid[i,:,:,:] = self.grid
self.batchgrid = Variable(self.batchgrid)
#print(self.batchgrid.size())
input_u = input.view(-1,1,1,1).repeat(1,self.height, self.width,1)
#print(input_u.requires_grad, self.batchgrid)
output0 = self.batchgrid[:,:,:,0:1]
output1 = torch.atan(torch.tan(np.pi/2.0*(self.batchgrid[:,:,:,1:2] + self.batchgrid[:,:,:,2:] * input_u[:,:,:,:]))) /(np.pi/2)
#print(output0.size(), output1.size())
output = torch.cat([output0, output1], 3)
return output
def getPhase(x):
return torch.atan(x[...,1]/x[...,0])
def cdf(self, value):
self._validate_log_prob_arg(value)
return torch.atan((value - self.loc) / self.scale) / math.pi + 0.5