def __init__(self,
source_map_size, world_size_px,
world_size, img_w, img_h,
embed_size, map_channels, gnd_channels, res_channels=32,
lang_filter=False, img_dbg=False):
super(FPVToEgoMap, self).__init__(source_map_size, world_size_px)
self.image_debug = img_dbg
self.use_lang_filter = lang_filter
# Process images using a resnet to get a feature map
if self.image_debug:
self.img_to_features = nn.MaxPool2d(8)
else:
# Provide enough padding so that the map is scaled down by powers of 2.
self.img_to_features = ImgToFeatures(res_channels, map_channels)
if self.use_lang_filter:
self.lang_filter = MapLangSemanticFilter(embed_size, map_channels, gnd_channels)
# Project feature maps to the global frame
self.map_projection = PinholeCameraProjectionModule(
source_map_size, world_size_px, world_size, source_map_size / 2, img_w, img_h)
self.grid_sampler = GridSampler()
self.prof = SimpleProfiler(torch_sync=PROFILE, print=PROFILE)
self.actual_images = None
def __init__(self,
img_in_size=256,
world_size_in_img=256,
feature_channels=32,
ground_channels=3,
embed_size=40,
aux_ground=False,
freeze=False):
super(TopDownToEgoMap, self).__init__(img_in_size, world_size_in_img)
# Process images using a resnet to get a feature map
self.feature_net = ResNet13Light(feature_channels, down_pad=True)
self.aux_ground = aux_ground
if aux_ground:
self.lang_filter = MapLangSemanticFilter(embed_size,
feature_channels,
ground_channels)
enable_weight_saving(self.lang_filter,
"ground_filter",
alwaysfreeze=freeze)
enable_weight_saving(self.feature_net,
"feature_resnet_light",
alwaysfreeze=freeze)
def __init__(self, text_embed_size, channels=16, c_out=None):
super(ResBlockConditional, self).__init__()
if c_out is None:
c_out = channels
self.c_in = channels
self.c_out = c_out
if self.c_in != self.c_out:
print("WARNING: ResBlockConditional is not residual")
self.lf = MapLangSemanticFilter(text_embed_size, channels, c_out)
class LangFilterMapProcessor(nn.Module):
def __init__(self,
embed_size,
in_channels,
out_channels,
spatial=False,
cat_out=False):
super(LangFilterMapProcessor, self).__init__()
self.embed_size = embed_size
self.in_channels = in_channels
self.out_channels = out_channels
self.cat_out = cat_out
if spatial:
self.lang_filter = MapLangSpatialFilter(embed_size, in_channels,
out_channels)
else:
self.lang_filter = MapLangSemanticFilter(embed_size, in_channels,
out_channels)
def init_weights(self):
self.lang_filter.init_weights()
def forward(self,
images,
sentence_embeddings,
map_poses,
proc_mask=None,
show=""):
# If we are supposed to use less channels than the input map has, just grab the first N channels
if images.size(1) > self.in_channels:
images_in = images[:, 0:self.in_channels, :, :]
else:
images_in = images
# Apply the language-conditioned convolutional filter
self.lang_filter.precompute_conv_weights(sentence_embeddings)
images_out = self.lang_filter(images_in)
if show != "":
Presenter().show_image(images_out.data[0, 0:3],
show,
torch=True,
scale=4,
waitkey=1)
# If requested, concatenate with the prior input, such that the first feature maps are from output
# That allows chaining these modules and slicing
if self.cat_out:
images_out = torch.cat([images_out, images_in], dim=1)
return images_out, map_poses
def __init__(self,
embed_size,
in_channels,
out_channels,
spatial=False,
cat_out=False):
super(LangFilterMapProcessor, self).__init__()
self.embed_size = embed_size
self.in_channels = in_channels
self.out_channels = out_channels
self.cat_out = cat_out
if spatial:
self.lang_filter = MapLangSpatialFilter(embed_size, in_channels,
out_channels)
else:
self.lang_filter = MapLangSemanticFilter(embed_size, in_channels,
out_channels)
class ResBlockConditional(torch.nn.Module):
def __init__(self, text_embed_size, channels=16, c_out=None):
super(ResBlockConditional, self).__init__()
if c_out is None:
c_out = channels
self.c_in = channels
self.c_out = c_out
if self.c_in != self.c_out:
print("WARNING: ResBlockConditional is not residual")
self.lf = MapLangSemanticFilter(text_embed_size, channels, c_out)
def cuda(self, device=None):
super(ResBlockConditional, self).cuda()
self.lf.cuda(device)
def init_weights(self):
self.lf.init_weights()
def forward(self, images, contexts):
self.lf.precompute_conv_weights(contexts)
x = self.lf(images)
if self.c_in == self.c_out:
out = x + images
else:
out = x
return out
def __init__(self,
run_name="",
aux_class_features=False,
aux_grounding_features=False,
aux_lang=False,
recurrence=False):
super(ModelGSFPV, self).__init__()
self.model_name = "gs_fpv" + "_mem" if recurrence else ""
self.run_name = run_name
self.writer = LoggingSummaryWriter(log_dir="runs/" + run_name)
self.params = get_current_parameters()["Model"]
self.aux_weights = get_current_parameters()["AuxWeights"]
self.prof = SimpleProfiler(torch_sync=PROFILE, print=PROFILE)
self.iter = nn.Parameter(torch.zeros(1), requires_grad=False)
# Auxiliary Objectives
self.use_aux_class_features = aux_class_features
self.use_aux_grounding_features = aux_grounding_features
self.use_aux_lang = aux_lang
self.use_recurrence = recurrence
self.img_to_features_w = FPVToFPVMap(self.params["img_w"],
self.params["img_h"],
self.params["resnet_channels"],
self.params["feature_channels"])
self.lang_filter_gnd = MapLangSemanticFilter(
self.params["emb_size"], self.params["feature_channels"],
self.params["relevance_channels"])
self.lang_filter_goal = MapLangSpatialFilter(
self.params["emb_size"], self.params["relevance_channels"],
self.params["goal_channels"])
self.map_downsample = DownsampleResidual(
self.params["map_to_act_channels"], 2)
self.recurrence = RecurrentEmbedding(
self.params["gs_fpv_feature_map_size"],
self.params["gs_fpv_recurrence_size"])
# Sentence Embedding
self.sentence_embedding = SentenceEmbeddingSimple(
self.params["word_emb_size"], self.params["emb_size"],
self.params["emb_layers"])
in_features_size = self.params[
"gs_fpv_feature_map_size"] + self.params["emb_size"]
if self.use_recurrence:
in_features_size += self.params["gs_fpv_recurrence_size"]
self.features_to_action = DenseMlpBlock2(in_features_size,
self.params["mlp_hidden"], 4)
# Auxiliary Objectives
# --------------------------------------------------------------------------------------------------------------
self.add_auxiliary(
ClassAuxiliary2D("aux_class", None,
self.params["feature_channels"],
self.params["num_landmarks"], "fpv_features",
"lm_pos_fpv", "lm_indices"))
self.add_auxiliary(
ClassAuxiliary2D("aux_ground", None,
self.params["relevance_channels"], 2,
"fpv_features_g", "lm_pos_fpv", "lm_mentioned"))
if self.params["templates"]:
self.add_auxiliary(
ClassAuxiliary("aux_lang_lm", self.params["emb_size"],
self.params["num_landmarks"], 1,
"sentence_embed", "lm_mentioned_tplt"))
self.add_auxiliary(
ClassAuxiliary("aux_lang_side", self.params["emb_size"],
self.params["num_sides"], 1, "sentence_embed",
"side_mentioned_tplt"))
else:
self.add_auxiliary(
ClassAuxiliary("aux_lang_lm_nl", self.params["emb_size"], 2,
self.params["num_landmarks"], "sentence_embed",
"lang_lm_mentioned"))
self.action_loss = ActionLoss()
self.env_id = None
self.prev_instruction = None
self.seq_step = 0
class ModelGSFPV(nn.Module):
def __init__(self,
run_name="",
aux_class_features=False,
aux_grounding_features=False,
aux_lang=False,
recurrence=False):
super(ModelGSFPV, self).__init__()
self.model_name = "gs_fpv" + "_mem" if recurrence else ""
self.run_name = run_name
self.writer = LoggingSummaryWriter(log_dir="runs/" + run_name)
self.params = get_current_parameters()["Model"]
self.aux_weights = get_current_parameters()["AuxWeights"]
self.prof = SimpleProfiler(torch_sync=PROFILE, print=PROFILE)
self.iter = nn.Parameter(torch.zeros(1), requires_grad=False)
# Auxiliary Objectives
self.use_aux_class_features = aux_class_features
self.use_aux_grounding_features = aux_grounding_features
self.use_aux_lang = aux_lang
self.use_recurrence = recurrence
self.img_to_features_w = FPVToFPVMap(self.params["img_w"],
self.params["img_h"],
self.params["resnet_channels"],
self.params["feature_channels"])
self.lang_filter_gnd = MapLangSemanticFilter(
self.params["emb_size"], self.params["feature_channels"],
self.params["relevance_channels"])
self.lang_filter_goal = MapLangSpatialFilter(
self.params["emb_size"], self.params["relevance_channels"],
self.params["goal_channels"])
self.map_downsample = DownsampleResidual(
self.params["map_to_act_channels"], 2)
self.recurrence = RecurrentEmbedding(
self.params["gs_fpv_feature_map_size"],
self.params["gs_fpv_recurrence_size"])
# Sentence Embedding
self.sentence_embedding = SentenceEmbeddingSimple(
self.params["word_emb_size"], self.params["emb_size"],
self.params["emb_layers"])
in_features_size = self.params[
"gs_fpv_feature_map_size"] + self.params["emb_size"]
if self.use_recurrence:
in_features_size += self.params["gs_fpv_recurrence_size"]
self.features_to_action = DenseMlpBlock2(in_features_size,
self.params["mlp_hidden"], 4)
# Auxiliary Objectives
# --------------------------------------------------------------------------------------------------------------
self.add_auxiliary(
ClassAuxiliary2D("aux_class", None,
self.params["feature_channels"],
self.params["num_landmarks"], "fpv_features",
"lm_pos_fpv", "lm_indices"))
self.add_auxiliary(
ClassAuxiliary2D("aux_ground", None,
self.params["relevance_channels"], 2,
"fpv_features_g", "lm_pos_fpv", "lm_mentioned"))
if self.params["templates"]:
self.add_auxiliary(
ClassAuxiliary("aux_lang_lm", self.params["emb_size"],
self.params["num_landmarks"], 1,
"sentence_embed", "lm_mentioned_tplt"))
self.add_auxiliary(
ClassAuxiliary("aux_lang_side", self.params["emb_size"],
self.params["num_sides"], 1, "sentence_embed",
"side_mentioned_tplt"))
else:
self.add_auxiliary(
ClassAuxiliary("aux_lang_lm_nl", self.params["emb_size"], 2,
self.params["num_landmarks"], "sentence_embed",
"lang_lm_mentioned"))
self.action_loss = ActionLoss()
self.env_id = None
self.prev_instruction = None
self.seq_step = 0
# TODO: Try to hide these in a superclass or something. They take up a lot of space:
def cuda(self, device=None):
ModuleWithAuxiliaries.cuda(self, device)
self.sentence_embedding.cuda(device)
self.img_to_features_w.cuda(device)
self.lang_filter_gnd.cuda(device)
self.lang_filter_goal.cuda(device)
self.action_loss.cuda(device)
self.recurrence.cuda(device)
return self
def get_iter(self):
return int(self.iter.data[0])
def inc_iter(self):
self.iter += 1
def init_weights(self):
self.img_to_features_w.init_weights()
self.lang_filter_gnd.init_weights()
self.lang_filter_goal.init_weights()
self.sentence_embedding.init_weights()
def reset(self):
# TODO: This is error prone. Create a class StatefulModule, iterate submodules and reset all stateful modules
super(ModelGSFPV, self).reset()
self.sentence_embedding.reset()
self.img_to_features_w.reset()
self.recurrence.reset()
self.prev_instruction = None
print("GS_FPV_MEM_RESET")
def setEnvContext(self, context):
print("Set env context to: " + str(context))
self.env_id = context["env_id"]
def start_segment_rollout(self, *args):
self.reset()
def get_action(self, state, instruction):
"""
Given a DroneState (from PomdpInterface) and instruction, produce a numpy 4D action (x, y, theta, pstop)
:param state: DroneState object with the raw image from the simulator
:param instruction: Tokenized instruction given the corpus
#TODO: Absorb corpus within model
:return:
"""
# TODO: Simplify this
self.eval()
images_np_pure = state.image
state_np = state.state
#print("Act: " + debug_untokenize_instruction(instruction))
images_np = standardize_image(images_np_pure)
image_fpv = Variable(none_padded_seq_to_tensor([images_np]))
state = Variable(none_padded_seq_to_tensor([state_np]))
self.prev_instruction = instruction
img_in_t = image_fpv
img_in_t.volatile = True
instr_len = [len(instruction)] if instruction is not None else None
instruction = torch.LongTensor(instruction).unsqueeze(0)
instruction = cuda_var(instruction, self.is_cuda, self.cuda_device)
state.volatile = True
if self.is_cuda:
img_in_t = img_in_t.cuda(self.cuda_device)
state = state.cuda(self.cuda_device)
self.seq_step += 1
action = self(img_in_t, state, instruction, instr_len)
output_action = action.squeeze().data.cpu().numpy()
print("action: ", output_action)
stop_prob = output_action[3]
output_stop = 1 if stop_prob > self.params["stop_threshold"] else 0
output_action[3] = output_stop
return output_action
def deterministic_action(self, action_mean, action_std, stop_prob):
batch_size = action_mean.size(0)
action = Variable(
empty_float_tensor((batch_size, 4), self.is_cuda,
self.cuda_device))
action[:, 0:3] = action_mean[:, 0:3]
action[:, 3] = stop_prob
return action
def sample_action(self, action_mean, action_std, stop_prob):
action = torch.normal(action_mean, action_std)
stop = torch.bernoulli(stop_prob)
return action, stop
# This is called before beginning an execution sequence
def start_sequence(self):
self.seq_step = 0
self.reset()
print("RESETTED!")
return
# TODO: Move this somewhere and standardize
def cam_poses_from_states(self, states):
cam_pos = states[:, 9:12]
cam_rot = states[:, 12:16]
pose = Pose(cam_pos, cam_rot)
return pose
def forward(self, images, states, instructions, instr_lengths):
"""
:param images: BxCxHxW batch of images (observations)
:param states: BxK batch of drone states
:param instructions: BxM LongTensor where M is the maximum length of any instruction
:param instr_lengths: list of len B of integers, indicating length of each instruction
:param has_obs: list of booleans of length B indicating whether the given element in the sequence has an observation
:param yield_semantic_maps: If true, will not compute actions (full model), but return the semantic maps that
were built along the way in response to the images. This is ugly, but allows code reuse
:return:
"""
cam_poses = self.cam_poses_from_states(states)
self.prof.tick("out")
#print("Trn: " + debug_untokenize_instruction(instructions[0].data[:instr_lengths[0]]))
# Calculate the instruction embedding
if instructions is not None:
# TODO: Take batch of instructions and their lengths, return batch of embeddings. Store the last one as internal state
sent_embeddings = self.sentence_embedding(instructions,
instr_lengths)
self.keep_inputs("sentence_embed", sent_embeddings)
else:
sent_embeddings = self.sentence_embedding.get()
self.prof.tick("embed")
seq_size = len(images)
# Extract and project features onto the egocentric frame for each image
fpv_features = self.img_to_features_w(images,
cam_poses,
sent_embeddings,
self,
show="")
self.keep_inputs("fpv_features", fpv_features)
self.prof.tick("img_to_map_frame")
self.lang_filter_gnd.precompute_conv_weights(sent_embeddings)
self.lang_filter_goal.precompute_conv_weights(sent_embeddings)
gnd_features = self.lang_filter_gnd(fpv_features)
goal_features = self.lang_filter_goal(gnd_features)
self.keep_inputs("fpv_features_g", gnd_features)
visual_features = torch.cat([gnd_features, goal_features], dim=1)
lstm_in_features = visual_features.view([seq_size, 1, -1])
catlist = [lstm_in_features.view([seq_size, -1]), sent_embeddings]
if self.use_recurrence:
memory_features = self.recurrence(lstm_in_features)
catlist.append(memory_features[:, 0, :])
action_features = torch.cat(catlist, dim=1)
# Output the final action given the processed map
action_pred = self.features_to_action(action_features)
action_pred[:, 3] = torch.sigmoid(action_pred[:, 3])
out_action = self.deterministic_action(action_pred[:, 0:3], None,
action_pred[:, 3])
self.prof.tick("map_to_action")
return out_action
def maybe_cuda(self, tensor):
if self.is_cuda:
return tensor.cuda()
else:
return tensor
def cuda_var(self, tensor):
return cuda_var(tensor, self.is_cuda, self.cuda_device)
# Forward pass for training (with batch optimizations
def sup_loss_on_batch(self, batch, eval):
self.prof.tick("out")
action_loss_total = Variable(
empty_float_tensor([1], self.is_cuda, self.cuda_device))
if batch is None:
print("Skipping None Batch")
return action_loss_total
images = self.maybe_cuda(batch["images"])
instructions = self.maybe_cuda(batch["instr"])
instr_lengths = batch["instr_len"]
states = self.maybe_cuda(batch["states"])
actions = self.maybe_cuda(batch["actions"])
# Auxiliary labels
lm_pos_fpv = batch["lm_pos_fpv"]
lm_indices = batch["lm_indices"]
lm_mentioned = batch["lm_mentioned"]
lang_lm_mentioned = batch["lang_lm_mentioned"]
templates = get_current_parameters()["Environment"]["Templates"]
if templates:
lm_mentioned_tplt = batch["lm_mentioned_tplt"]
side_mentioned_tplt = batch["side_mentioned_tplt"]
# stops = self.maybe_cuda(batch["stops"])
masks = self.maybe_cuda(batch["masks"])
metadata = batch["md"]
seq_len = images.size(1)
batch_size = images.size(0)
count = 0
correct_goal_count = 0
goal_count = 0
# Loop thru batch
for b in range(batch_size):
seg_idx = -1
self.reset()
self.prof.tick("out")
b_seq_len = len_until_nones(metadata[b])
# TODO: Generalize this
# Slice the data according to the sequence length
b_metadata = metadata[b][:b_seq_len]
b_images = images[b][:b_seq_len]
b_instructions = instructions[b][:b_seq_len]
b_instr_len = instr_lengths[b][:b_seq_len]
b_states = states[b][:b_seq_len]
b_actions = actions[b][:b_seq_len]
b_lm_pos_fpv = lm_pos_fpv[b][:b_seq_len]
b_lm_indices = lm_indices[b][:b_seq_len]
b_lm_mentioned = lm_mentioned[b][:b_seq_len]
b_lm_pos_fpv = [
self.cuda_var(
(s / RESNET_FACTOR).long()) if s is not None else None
for s in b_lm_pos_fpv
]
b_lm_indices = [
self.cuda_var(s) if s is not None else None
for s in b_lm_indices
]
b_lm_mentioned = [
self.cuda_var(s) if s is not None else None
for s in b_lm_mentioned
]
# TODO: Figure out how to keep these properly. Perhaps as a whole batch is best
# TODO: Introduce a key-value store (encapsulate instead of inherit)
self.keep_inputs("lm_pos_fpv", b_lm_pos_fpv)
self.keep_inputs("lm_indices", b_lm_indices)
self.keep_inputs("lm_mentioned", b_lm_mentioned)
# TODO: Abstract all of these if-elses in a modular way once we know which ones are necessary
if templates:
b_lm_mentioned_tplt = lm_mentioned_tplt[b][:b_seq_len]
b_side_mentioned_tplt = side_mentioned_tplt[b][:b_seq_len]
b_side_mentioned_tplt = self.cuda_var(b_side_mentioned_tplt)
b_lm_mentioned_tplt = self.cuda_var(b_lm_mentioned_tplt)
self.keep_inputs("lm_mentioned_tplt", b_lm_mentioned_tplt)
self.keep_inputs("side_mentioned_tplt", b_side_mentioned_tplt)
else:
b_lang_lm_mentioned = self.cuda_var(
lang_lm_mentioned[b][:b_seq_len])
self.keep_inputs("lang_lm_mentioned", b_lang_lm_mentioned)
# ----------------------------------------------------------------------------
self.prof.tick("inputs")
actions = self(b_images, b_states, b_instructions, b_instr_len)
action_losses, _ = self.action_loss(b_actions,
actions,
batchreduce=False)
self.prof.tick("call")
action_losses = self.action_loss.batch_reduce_loss(action_losses)
action_loss = self.action_loss.reduce_loss(action_losses)
action_loss_total = action_loss
count += b_seq_len
self.prof.tick("loss")
action_loss_avg = action_loss_total / (count + 1e-9)
self.prof.tick("out")
# Doing this in the end (outside of se
aux_losses = self.calculate_aux_loss(reduce_average=True)
aux_loss = self.combine_aux_losses(aux_losses, self.aux_weights)
prefix = self.model_name + ("/eval" if eval else "/train")
self.writer.add_dict(prefix, get_current_meters(), self.get_iter())
self.writer.add_dict(prefix, aux_losses, self.get_iter())
self.writer.add_scalar(prefix + "/action_loss",
action_loss_avg.data.cpu()[0], self.get_iter())
self.prof.tick("auxiliaries")
total_loss = action_loss_avg + aux_loss
self.inc_iter()
self.prof.tick("summaries")
self.prof.loop()
self.prof.print_stats(1)
return total_loss
def get_dataset(self,
data=None,
envs=None,
dataset_names=None,
dataset_prefix=None,
eval=False):
# TODO: Maybe use eval here
#if self.fpv:
data_sources = []
data_sources.append(aup.PROVIDER_LM_POS_DATA)
data_sources.append(aup.PROVIDER_LANDMARKS_MENTIONED)
templates = get_current_parameters()["Environment"]["Templates"]
if templates:
data_sources.append(aup.PROVIDER_LANG_TEMPLATE)
return SegmentDataset(data=data,
env_list=envs,
dataset_names=dataset_names,
dataset_prefix=dataset_prefix,
aux_provider_names=data_sources,
segment_level=True)
class FPVToEgoMap(MapTransformerBase):
def __init__(self,
source_map_size, world_size_px,
world_size, img_w, img_h,
embed_size, map_channels, gnd_channels, res_channels=32,
lang_filter=False, img_dbg=False):
super(FPVToEgoMap, self).__init__(source_map_size, world_size_px)
self.image_debug = img_dbg
self.use_lang_filter = lang_filter
# Process images using a resnet to get a feature map
if self.image_debug:
self.img_to_features = nn.MaxPool2d(8)
else:
# Provide enough padding so that the map is scaled down by powers of 2.
self.img_to_features = ImgToFeatures(res_channels, map_channels)
if self.use_lang_filter:
self.lang_filter = MapLangSemanticFilter(embed_size, map_channels, gnd_channels)
# Project feature maps to the global frame
self.map_projection = PinholeCameraProjectionModule(
source_map_size, world_size_px, world_size, source_map_size / 2, img_w, img_h)
self.grid_sampler = GridSampler()
self.prof = SimpleProfiler(torch_sync=PROFILE, print=PROFILE)
self.actual_images = None
def cuda(self, device=None):
MapTransformerBase.cuda(self, device)
self.map_projection.cuda(device)
self.grid_sampler.cuda(device)
self.img_to_features.cuda(device)
if self.use_lang_filter:
self.lang_filter.cuda(device)
def init_weights(self):
if not self.image_debug:
self.img_to_features.init_weights()
def reset(self):
self.actual_images = None
super(FPVToEgoMap, self).reset()
def forward_fpv_features(self, images, sentence_embeds, parent=None):
"""
Compute the first-person image features given the first-person images
If grounding loss is enabled, will also return sentence_embedding conditioned image features
:param images: images to compute features on
:param sentence_embeds: sentence embeddings for each image
:param parent:
:return: features_fpv_vis - the visual features extracted using the ResNet
features_fpv_gnd - the grounded visual features obtained after applying a 1x1 language-conditioned conv
"""
# Extract image features. If they've been precomputed ahead of time, just grab it by the provided index
features_fpv_vis = self.img_to_features(images)
if parent is not None:
parent.keep_inputs("fpv_features", features_fpv_vis)
self.prof.tick("feat")
# If required, pre-process image features by grounding them in language
if self.use_lang_filter:
self.lang_filter.precompute_conv_weights(sentence_embeds)
features_gnd = self.lang_filter(features_fpv_vis)
if parent is not None:
parent.keep_inputs("fpv_features_g", features_gnd)
self.prof.tick("gnd")
return features_fpv_vis, features_gnd
return features_fpv_vis, None
def forward(self, images, poses, sentence_embeds, parent=None, show=""):
self.prof.tick("out")
features_fpv_vis_only, features_fpv_gnd_only = self.forward_fpv_features(images, sentence_embeds, parent)
# If we have grounding features, the overall features are a concatenation of grounded and non-grounded features
if features_fpv_gnd_only is not None:
features_fpv_all = torch.cat([features_fpv_gnd_only, features_fpv_vis_only], dim=1)
else:
features_fpv_all = features_fpv_vis_only
# Project first-person view features on to the map in egocentric frame
grid_maps = self.map_projection(poses)
self.prof.tick("proj_map")
features_r = self.grid_sampler(features_fpv_all, grid_maps)
# Obtain an ego-centric map mask of where we have new information
ones_size = list(features_fpv_all.size())
ones_size[1] = 1
tmp_ones = empty_float_tensor(ones_size, self.is_cuda, self.cuda_device).fill_(1.0)
new_coverages = self.grid_sampler(tmp_ones, grid_maps)
# Make sure that new_coverage is a 0/1 mask (grid_sampler applies bilinear interpolation)
new_coverages = new_coverages - torch.min(new_coverages)
new_coverages = new_coverages / torch.max(new_coverages)
self.prof.tick("gsample")
if show != "":
Presenter().show_image(images.data[0, 0:3], show + "_img", torch=True, scale=1, waitkey=1)
Presenter().show_image(features_r.data[0, 0:3], show, torch=True, scale=6, waitkey=1)
Presenter().show_image(new_coverages.data[0], show + "_covg", torch=True, scale=6, waitkey=1)
self.prof.loop()
self.prof.print_stats(10)
return features_r, new_coverages
def __init__(self,
run_name,
ignore_lang=False,
class_loss=True,
ground_loss=True):
super(ModelTopDownPathGoalPredictor, self).__init__()
self.run_name = run_name
self.model_name = "top_down_path_pred_pretrain"
self.writer = SummaryWriter(log_dir="runs/" + run_name)
self.ignore_lang = ignore_lang
self.class_loss = class_loss
self.ground_loss = ground_loss
# The feature net extracts the 2D feature map from the input image.
# The label_pool down-sizes the ground-truth labels, which are input at the same size as the input image
# The output predicted labels are the size of the feature map
self.feature_net = ResNet13Light(32, down_pad=True)
self.label_pool = nn.MaxPool2d(8)
if self.ground_loss:
self.lang_filter = MapLangSemanticFilter(sentence_embedding_size,
32, 3)
self.aux_ground_linear = nn.Linear(3, 2)
enable_weight_saving(self.lang_filter, "ground_filter")
enable_weight_saving(self.aux_ground_linear, "ground_aux_linear")
if RESNET:
self.unet = ResNetConditional(sentence_embedding_size, 35, 2)
else:
unet_c_in = 35 if self.ground_loss else 32
unet_hc1 = 48 if self.ground_loss else 48
unet_hb1 = 24 if self.ground_loss else 24
self.unet = Unet5ContextualBneck(unet_c_in,
2,
sentence_embedding_size,
hc1=unet_hc1,
hb1=unet_hb1,
hc2=128,
split_embedding=splitemb)
if attention:
self.sentence_embedding = SentenceEmbeddingSelfAttention(
word_embedding_size,
lstm_size,
sentence_embedding_layers,
attention_heads=attention_heads)
else:
self.sentence_embedding = SentenceEmbeddingSimple(
word_embedding_size, sentence_embedding_size,
sentence_embedding_layers)
self.gather2d = Gather2D()
if self.class_loss:
self.aux_class_linear = nn.Linear(32, 64)
enable_weight_saving(self.aux_class_linear, "class_aux_linear")
print("Sentence Embedding #Params: ",
get_n_params(self.sentence_embedding))
print("U-Net #Params: ", get_n_params(self.unet))
print("Class auxiliary: ", self.class_loss)
print("Ground auxiliary: ", self.ground_loss)
# Enable saving of pre-trained weights
enable_weight_saving(self.feature_net, "feature_resnet_light")
enable_weight_saving(self.unet, "unet")
enable_weight_saving(self.sentence_embedding, "sentence_embedding")
if NLL:
#self.mask_loss = nn.BCELoss()
self.mask_loss = nn.NLLLoss2d()
elif BCE:
self.mask_loss = nn.BCEWithLogitsLoss()
elif CE:
self.spatialsoftmax = SpatialSoftmax2d()
self.mask_loss = CrossEntropy2d()
else:
self.mask_loss = nn.MSELoss()
self.aux_loss = nn.CrossEntropyLoss(reduce=True, size_average=True)
self.epoch_numbers = {"train": 0, "eval": 0}
self.iter = nn.Parameter(torch.zeros(1), requires_grad=False)
self.dropout = nn.Dropout(0.5)
self.dropout2d = nn.Dropout2d(0.5)
self.dropout3d = nn.Dropout3d(0.5)
self.viz_images = []
self.instructions = []
class ModelTopDownPathGoalPredictor(CudaModule):
def __init__(self,
run_name,
ignore_lang=False,
class_loss=True,
ground_loss=True):
super(ModelTopDownPathGoalPredictor, self).__init__()
self.run_name = run_name
self.model_name = "top_down_path_pred_pretrain"
self.writer = SummaryWriter(log_dir="runs/" + run_name)
self.ignore_lang = ignore_lang
self.class_loss = class_loss
self.ground_loss = ground_loss
# The feature net extracts the 2D feature map from the input image.
# The label_pool down-sizes the ground-truth labels, which are input at the same size as the input image
# The output predicted labels are the size of the feature map
self.feature_net = ResNet13Light(32, down_pad=True)
self.label_pool = nn.MaxPool2d(8)
if self.ground_loss:
self.lang_filter = MapLangSemanticFilter(sentence_embedding_size,
32, 3)
self.aux_ground_linear = nn.Linear(3, 2)
enable_weight_saving(self.lang_filter, "ground_filter")
enable_weight_saving(self.aux_ground_linear, "ground_aux_linear")
if RESNET:
self.unet = ResNetConditional(sentence_embedding_size, 35, 2)
else:
unet_c_in = 35 if self.ground_loss else 32
unet_hc1 = 48 if self.ground_loss else 48
unet_hb1 = 24 if self.ground_loss else 24
self.unet = Unet5ContextualBneck(unet_c_in,
2,
sentence_embedding_size,
hc1=unet_hc1,
hb1=unet_hb1,
hc2=128,
split_embedding=splitemb)
if attention:
self.sentence_embedding = SentenceEmbeddingSelfAttention(
word_embedding_size,
lstm_size,
sentence_embedding_layers,
attention_heads=attention_heads)
else:
self.sentence_embedding = SentenceEmbeddingSimple(
word_embedding_size, sentence_embedding_size,
sentence_embedding_layers)
self.gather2d = Gather2D()
if self.class_loss:
self.aux_class_linear = nn.Linear(32, 64)
enable_weight_saving(self.aux_class_linear, "class_aux_linear")
print("Sentence Embedding #Params: ",
get_n_params(self.sentence_embedding))
print("U-Net #Params: ", get_n_params(self.unet))
print("Class auxiliary: ", self.class_loss)
print("Ground auxiliary: ", self.ground_loss)
# Enable saving of pre-trained weights
enable_weight_saving(self.feature_net, "feature_resnet_light")
enable_weight_saving(self.unet, "unet")
enable_weight_saving(self.sentence_embedding, "sentence_embedding")
if NLL:
#self.mask_loss = nn.BCELoss()
self.mask_loss = nn.NLLLoss2d()
elif BCE:
self.mask_loss = nn.BCEWithLogitsLoss()
elif CE:
self.spatialsoftmax = SpatialSoftmax2d()
self.mask_loss = CrossEntropy2d()
else:
self.mask_loss = nn.MSELoss()
self.aux_loss = nn.CrossEntropyLoss(reduce=True, size_average=True)
self.epoch_numbers = {"train": 0, "eval": 0}
self.iter = nn.Parameter(torch.zeros(1), requires_grad=False)
self.dropout = nn.Dropout(0.5)
self.dropout2d = nn.Dropout2d(0.5)
self.dropout3d = nn.Dropout3d(0.5)
self.viz_images = []
self.instructions = []
def get_iter(self):
return int(self.iter.data[0])
def inc_iter(self):
self.iter += 1
def init_weights(self):
self.sentence_embedding.init_weights()
self.unet.init_weights()
if self.ground_loss:
self.aux_ground_linear.weight.data.normal_(0.001)
self.aux_ground_linear.bias.data.fill_(0)
if self.class_loss:
self.aux_class_linear.weight.data.normal_(0.001)
self.aux_class_linear.bias.data.fill_(0)
def cuda(self, device=None):
CudaModule.cuda(self, device)
self.sentence_embedding.cuda(device)
self.unet.cuda(device)
if self.ground_loss:
self.lang_filter.cuda(device)
return self
def write_eoe_summaries(self, inference_type, epoch_num):
pass
def write_summaires(self, prefix, idx, total_loss, main_loss, emb_loss,
class_loss, gnd_loss):
full_prefix = self.model_name + "/" + prefix + "/"
if self.writer is None:
return
self.writer.add_scalar(full_prefix + "total_loss", total_loss.data[0],
idx)
self.writer.add_scalar(full_prefix + "main_loss", main_loss.data[0],
idx)
self.writer.add_scalar(full_prefix + "class_loss", class_loss.data[0],
idx)
if class_loss is not None:
self.writer.add_scalar(full_prefix + "emb_loss", emb_loss.data[0],
idx)
if gnd_loss is not None:
self.writer.add_scalar(full_prefix + "gnd_loss", gnd_loss.data[0],
idx)
def get_dataset(self,
data=None,
envs=None,
eval=False,
dataset_name=None,
seg_level=True):
return TopDownDataset(env_list=envs,
instr_negatives=False,
instr_negatives_similar_only=False,
seg_level=seg_level,
yaw_rand_range=0.0 if eval else YAW_RANGE,
img_w=512,
img_h=512,
map_w=256,
map_h=256,
incl_path=True,
incl_endpoint=True)
def get_viz(self):
presenter = Presenter()
out = {"viz_img": []}
for i, img in enumerate(self.viz_images):
instruction = self.instructions[i]
if len(instruction.view([-1])) < 2:
instruction = [0]
else:
instruction = list(instruction.data.cpu().numpy().squeeze())
instruction_str = debug_untokenize_instruction(instruction)
viz_img = presenter.overlay_text(img, instruction_str)
out["viz_img"].append(viz_img)
return out
def forward(self, images, instructions, instruction_masks):
emb = self.sentence_embedding(instructions,
torch.sum(instruction_masks, 1))
# If the embedding returns an internal auxiliary, loss, pass it along
emb_loss = cuda_var(torch.zeros([1]), self.is_cuda, self.cuda_device)
if type(emb) is tuple:
emb, emb_loss = emb
feature_map = self.feature_net(images)
feature_map = self.dropout2d(feature_map)
if self.ground_loss:
self.lang_filter.precompute_conv_weights(emb)
ground_map = self.lang_filter(feature_map)
feature_map = torch.cat([feature_map, ground_map], dim=1)
# TODO: Testing breaking of gradients between ResNet and UNet
if cut_gradients:
feature_map_fwd = Variable(feature_map.data)
else:
feature_map_fwd = feature_map
#if self.ground_loss:
# feature_map_fwd = feature_map_fwd[:, 0:3, :, :]
pred_mask = self.unet(feature_map_fwd, emb)
return pred_mask, feature_map, emb_loss
def sup_loss_on_batch(self, batch, eval=False, viz=False):
if eval:
self.eval()
else:
self.train()
images = cuda_var(batch["images"], self.is_cuda, self.cuda_device)
instructions = cuda_var(batch["instr"], self.is_cuda, self.cuda_device)
instruction_masks = cuda_var(batch["instr_mask"], self.is_cuda,
self.cuda_device)
label_masks = cuda_var(batch["traj_labels"], self.is_cuda,
self.cuda_device)
# Each of the above is a list of lists of tensors, where the outer list is over the batch and the inner list
# is over the segments. Loop through and accumulate loss for each batch sequentially, and for each segment.
# Reset model state (embedding etc) between batches, but not between segments.
# We don't process each batch in batch-mode, because it's complicated, with the varying number of segments and all.
batch_size = len(images)
total_class_loss = Variable(empty_float_tensor([1], self.is_cuda,
self.cuda_device),
requires_grad=True)
total_ground_loss = Variable(empty_float_tensor([1], self.is_cuda,
self.cuda_device),
requires_grad=True)
count = 0
label_masks = self.label_pool(label_masks)
mask_pred, features, emb_loss = self(images, instructions,
instruction_masks)
if BCE:
mask_pred_flat = mask_pred.view(-1, 1)
label_masks_flat = label_masks - torch.min(label_masks)
label_masks_flat = label_masks_flat / (
torch.max(label_masks_flat) + 1e-9)
label_masks_flat = label_masks_flat.view(-1, 1).clamp(0, 1)
main_loss = self.mask_loss(mask_pred_flat, label_masks_flat)
elif NLL:
mask_pred_1 = F.softmax(mask_pred, 1, _stacklevel=5)
mask_pred_2 = 1 - mask_pred_1
mask_pred_1 = mask_pred_1.unsqueeze(1)
mask_pred_2 = mask_pred_2.unsqueeze(1)
mask_pred = torch.cat((mask_pred_1, mask_pred_2), dim=1)
label_masks = label_masks.clamp(0, 1)
if self.is_cuda:
label_masks = label_masks.type(torch.cuda.LongTensor)
else:
label_masks = label_masks.type(torch.LongTensor)
main_loss = self.mask_loss(mask_pred, label_masks)
elif CE:
# Crossentropy2D internally applies logsoftmax to mask_pred,
# but labels are already assumed to be a valid probability distribution, so no softmax is applied
main_loss = self.mask_loss(mask_pred, label_masks)
# So for nice plotting, we must manually do it
mask_pred = self.spatialsoftmax(mask_pred)
else:
main_loss = self.mask_loss(mask_pred, label_masks)
# sum emb loss if batch size > 1
if type(emb_loss) == tuple:
emb_loss = sum(emb_loss)
# Extract the feature vectors corresponding to every landmark's location in the map
# Apply a linear layer to classify which of the 64 landmarks it is
# The landmark positions have to be divided by the same factor as the ResNet scaling factor
lcount = 0
for i in range(batch_size):
if self.class_loss and len(batch["lm_pos"][i]) > 0:
lcount += 1
landmark_pos = cuda_var(batch["lm_pos"][i], self.is_cuda,
self.cuda_device)
landmark_indices = cuda_var(batch["lm_indices"][i],
self.is_cuda, self.cuda_device)
landmark_coords = (landmark_pos / 8).long()
lm_features = self.gather2d(features[i:i + 1, 0:32],
landmark_coords)
lm_pred = self.aux_class_linear(lm_features)
class_loss = self.aux_loss(lm_pred, landmark_indices)
total_class_loss = total_class_loss + class_loss
if self.ground_loss and len(batch["lm_pos"][i]) > 0:
landmark_pos = cuda_var(batch["lm_pos"][i], self.is_cuda,
self.cuda_device)
landmark_mentioned = cuda_var(batch["lm_mentioned"][i],
self.is_cuda, self.cuda_device)
landmark_coords = (landmark_pos / 8).long()
g_features = self.gather2d(features[i:i + 1, 32:35],
landmark_coords)
lm_pred = self.aux_ground_linear(g_features)
ground_loss = self.aux_loss(lm_pred, landmark_mentioned)
total_ground_loss = total_ground_loss + ground_loss
total_class_loss = total_class_loss / (lcount + 1e-9)
total_ground_loss = total_ground_loss / (lcount + 1e-9)
count += 1
# Just visualization and debugging code
if self.get_iter() % 50 == 0:
presenter = Presenter()
pred_viz_np = presenter.overlaid_image(images[0].data,
mask_pred[0].data)
labl_viz_np = presenter.overlaid_image(images[0].data,
label_masks[0].data)
comp = np.concatenate((pred_viz_np, labl_viz_np), axis=1)
presenter.show_image(comp, "path_pred")
if hasattr(self.sentence_embedding, "save_att_map"):
self.sentence_embedding.save_att_map(self.get_iter(), i)
total_loss = main_loss + 0.1 * total_class_loss + 0.001 * emb_loss + 0.1 * total_ground_loss
total_loss = total_loss / (count + 1e-9)
self.write_summaires("eval" if eval else "train", self.get_iter(),
total_loss, main_loss, emb_loss, total_class_loss,
total_ground_loss)
self.inc_iter()
return total_loss
class TopDownToEgoMap(MapTransformerBase):
def __init__(self,
img_in_size=256,
world_size_in_img=256,
feature_channels=32,
ground_channels=3,
embed_size=40,
aux_ground=False,
freeze=False):
super(TopDownToEgoMap, self).__init__(img_in_size, world_size_in_img)
# Process images using a resnet to get a feature map
self.feature_net = ResNet13Light(feature_channels, down_pad=True)
self.aux_ground = aux_ground
if aux_ground:
self.lang_filter = MapLangSemanticFilter(embed_size,
feature_channels,
ground_channels)
enable_weight_saving(self.lang_filter,
"ground_filter",
alwaysfreeze=freeze)
enable_weight_saving(self.feature_net,
"feature_resnet_light",
alwaysfreeze=freeze)
def cuda(self, device=None):
MapTransformerBase.cuda(self, device)
self.map_affine.cuda(device)
if self.aux_ground:
self.lang_filter.cuda(device)
return self
def init_weights(self):
self.feature_net.init_weights()
def forward(self, image_g, pose, sentence_embed, parent=None, show=""):
# scale to 0-1 range
#image_g = image_g - torch.min(image_g)
#image_g = image_g / (torch.max(image_g) + 1e-9)
# rotate to robot frame
# TODO: Temporarily changed to local pose
self.set_map(image_g, pose)
image_r, _ = self.get_map(pose)
"""
# normalize mean-0 std-1
image_r = image_r - torch.mean(image_r)
image_r = image_r / (torch.std(image_r) + 1e-9)
ones = torch.ones_like(image_g)
self.set_map(ones, None)
cov_r, _ = self.get_map(pose)
cov_r = cov_r - torch.min(cov_r)
cov_r /= (torch.max(cov_r) + 1e-9)
cov_rl = cov_r > 1e-8
blackcolor = torch.min(image_g)
#image_r[cov_rl] = blackcolor
"""
features_r = self.feature_net(image_r)
if parent is not None:
parent.keep_inputs("fpv_features", features_r)
if self.aux_ground:
self.lang_filter.precompute_conv_weights(sentence_embed)
features_g = self.lang_filter(features_r)
if parent is not None:
parent.keep_inputs("fpv_features_g", features_g)
features_all = torch.cat([features_g, features_r], dim=1)
else:
features_all = features_r
coverage = torch.ones_like(features_all)
if show != "":
Presenter().show_image(image_r.data[0, 0:3],
show + "_img",
torch=True,
scale=1,
waitkey=20)
Presenter().show_image(features_r.data[0, 0:3],
show,
torch=True,
scale=12,
waitkey=20)
#Presenter().show_image(cov_r.data[0, 0:3], show+ "_convg", torch=True, scale=1, waitkey=20)
return features_all, coverage