def test(model, dataloader, idx_to_char, dtype):
sum_loss = 0.0
steps = 0.0
model.eval()
for x in dataloader:
line_imgs = Variable(x['line_imgs'].type(dtype),
requires_grad=False,
volatile=True)
labels = Variable(x['labels'], requires_grad=False, volatile=True)
label_lengths = Variable(x['label_lengths'],
requires_grad=False,
volatile=True)
online = Variable(x['online'].type(dtype),
requires_grad=False).view(1, -1, 1)
preds = model(line_imgs, online).cpu()
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
for i, gt_line in enumerate(x['gt']):
logits = out[i, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
cer = error_rates.cer(gt_line, pred_str)
sum_loss += cer
steps += 1
test_cer = sum_loss / steps
return test_cer
def main():
config_path = sys.argv[1]
image_path = sys.argv[2]
with open(config_path) as f:
config = json.load(f)
idx_to_char, char_to_idx = character_set.load_char_set(
config['character_set_path'])
hw = crnn.create_CRNN({
'cnn_out_size': config['network']['cnn_out_size'],
'num_of_channels': 3,
'num_of_outputs': len(idx_to_char) + 1
})
hw.load_state_dict(torch.load(config['model_save_path']))
if torch.cuda.is_available():
hw.cuda()
dtype = torch.cuda.FloatTensor
print("Using GPU")
else:
dtype = torch.FloatTensor
print("No GPU detected")
hw.eval()
img = cv2.imread(image_path)
if img.shape[0] != config['network']['input_height']:
percent = float(config['network']['input_height']) / img.shape[0]
img = cv2.resize(img, (0, 0),
fx=percent,
fy=percent,
interpolation=cv2.INTER_CUBIC)
img = torch.from_numpy(img.transpose(2, 0, 1).astype(np.float32) / 128 - 1)
img = Variable(img[None, ...].type(dtype),
requires_grad=False,
volatile=True)
preds = hw(img)
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
pred, pred_raw = string_utils.naive_decode(out[0])
pred_str = string_utils.label2str(pred, idx_to_char, False)
pred_raw_str = string_utils.label2str(pred_raw, idx_to_char, True)
print(pred_raw_str)
print(pred_str)
def decode(self, data, as_idx=False):
#COUNTER += 1
#print(data.shape
pred, full_pred = t_data = string_utils.naive_decode(data)
#print("---"
res = self._decode(data)
#global COUNTER
#if COUNTER % 100 == 0:
# print(COUNTER
# print("Pr:", string_utils.label2str_single(pred, self.idx_to_char, False).encode("utf-8")
# print("Ex:", res[0].encode("utf-8")
#raw_input()
if not as_idx:
return res
return string_utils.str2label_single(res[0], self.char_to_idx), res[1]
def run(self, img):
if img.shape[0] != self.config['network']['input_height']:
percent = float(self.config['network']['input_height']) / img.shape[0]
img = cv2.resize(img, (0,0), fx=percent, fy=percent, interpolation=cv2.INTER_CUBIC)
img = torch.from_numpy(img.transpose(2, 0, 1).astype(np.float32) / 128 - 1)
img = Variable(img[None, ...].type(self.dtype), requires_grad=False, volatile=True)
try:
preds = self.network(img)
except Exception as e:
print(e)
return "UNREADABLE"
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
pred, pred_raw = string_utils.naive_decode(out[0])
pred_str = string_utils.label2str(pred, self.idx_to_char, False)
pred_raw_str = string_utils.label2str(pred_raw, self.idx_to_char, True)
return pred_str
def batch_run(self, input_batch):
if input_batch.shape[1] != self.config['network']['input_height']:
input_batch = batch_resize(input_batch, self.config['network']['input_height'])
input_batch = input_batch.transpose([0,3,1,2])
imgs = input_batch.astype(np.float32) / 128 - 1
imgs = torch.from_numpy(imgs).type(self.dtype)
line_imgs = Variable(imgs, requires_grad=False, volatile=True)
try:
preds = self.network(line_imgs)
except Exception as e:
print(e)
return ['UNREADABLE' for i in range(8)]
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
retval = []
for i in range(out.shape[0]):
logits = out[i, ...]
pred, pred_raw = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, self.idx_to_char, False)
retval.append(pred_str)
return retval
def run_epoch(model, dataloader, criterion, optimizer, idx_to_char, dtype):
sum_loss = 0.0
steps = 0.0
model.train()
for i, x in enumerate(dataloader):
line_imgs = Variable(x['line_imgs'].type(dtype), requires_grad=False)
labels = Variable(x['labels'], requires_grad=False)
label_lengths = Variable(x['label_lengths'], requires_grad=False)
online = Variable(x['online'].type(dtype),
requires_grad=False).view(1, -1, 1)
preds = model(line_imgs, online).cpu()
preds_size = Variable(torch.IntTensor([preds.size(0)] * preds.size(1)))
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
loss = criterion(preds, labels, preds_size, label_lengths)
optimizer.zero_grad()
loss.backward()
optimizer.step()
# if i == 0:
# for i in xrange(out.shape[0]):
# pred, pred_raw = string_utils.naive_decode(out[i,...])
# pred_str = string_utils.label2str(pred_raw, idx_to_char, True)
# print(pred_str)
for j in range(out.shape[0]):
logits = out[j, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
gt_str = x['gt'][j]
cer = error_rates.cer(gt_str, pred_str)
sum_loss += cer
steps += 1
training_cer = sum_loss / steps
return training_cer
def main():
torch.manual_seed(68)
torch.backends.cudnn.deterministic = True
print(torch.LongTensor(10).random_(0, 10))
config_path = sys.argv[1]
RIMES = (config_path.lower().find('rimes') != -1)
print(RIMES)
with open(config_path) as f:
config = json.load(f)
with open(config_path) as f:
paramList = f.readlines()
baseMessage = ""
for line in paramList:
baseMessage = baseMessage + line
# print(baseMessage)
# lexicon = aps.ApproxLookupTable(generate_dict.get_lexicon())
idx_to_char, char_to_idx = character_set.load_char_set(config['character_set_path'])
# val_dataset = HwDataset(config['validation_set_path'], char_to_idx, img_height=config['network']['input_height'], root_path=config['image_root_directory'])
# val_dataloader = DataLoader(val_dataset, batch_size=config['batch_size'], shuffle=False, num_workers=0, collate_fn=hw_dataset.collate)
train_dataset = HwDataset(config['training_set_path'], char_to_idx, img_height=config['network']['input_height'],
root_path=config['image_root_directory'], augmentation=False)
try:
val_dataset = HwDataset(config['validation_set_path'], char_to_idx, img_height=config['network']['input_height'], root_path=config['image_root_directory'], remove_errors=True)
except KeyError as e:
print("No validation set found, generating one")
master = train_dataset
print("Total of " +str(len(master)) +" Training Examples")
n = len(master) # how many total elements you have
n_test = int(n * .1)
n_train = n - n_test
idx = list(range(n)) # indices to all elements
train_idx = idx[:n_train]
test_idx = idx[n_train:]
val_dataset = data.Subset(master, test_idx)
train_dataset = data.Subset(master, train_idx)
val_dataloader = DataLoader(val_dataset, batch_size=config['batch_size'], shuffle=False, num_workers=1,
collate_fn=hw_dataset.collate)
if(not RIMES):
val2_dataset = HwDataset(config['validation2_set_path'], char_to_idx, img_height=config['network']['input_height'],
root_path=config['image_root_directory'], remove_errors=True)
val2_dataloader = DataLoader(val2_dataset, batch_size=config['batch_size'], shuffle=False, num_workers=0,
collate_fn=hw_dataset.collate)
test_dataset = HwDataset(config['test_set_path'], char_to_idx, img_height=config['network']['input_height'], root_path=config['image_root_directory'], remove_errors=True)
test_dataloader = DataLoader(test_dataset, batch_size=config['batch_size'], shuffle=False, num_workers=0, collate_fn=hw_dataset.collate)
if config['model'] == "crnn":
print("Using CRNN")
hw = crnn.create_model({
'input_height': config['network']['input_height'],
'cnn_out_size': config['network']['cnn_out_size'],
'num_of_channels': 3,
'num_of_outputs': len(idx_to_char) + 1
})
#elif config['model'] == "urnn":
# print("Using URNN")
# hw = urnn.create_model({
# 'input_height': config['network']['input_height'],
# 'cnn_out_size': config['network']['cnn_out_size'],
# 'num_of_channels': 3,
# 'num_of_outputs': len(idx_to_char)+1,
# 'bridge_width': config['network']['bridge_width']
# })
# elif config['model'] == "urnn2":
# print("Using URNN with Curtis's recurrence")
# hw = urnn2.create_model({
# 'input_height': config['network']['input_height'],
# 'cnn_out_size': config['network']['cnn_out_size'],
# 'num_of_channels': 3,
# 'num_of_outputs': len(idx_to_char) + 1,
# 'bridge_width': config['network']['bridge_width']
# })
# elif config['model'] == "crnn2":
# print("Using original CRNN")
# hw = crnn2.create_model({
# 'cnn_out_size': config['network']['cnn_out_size'],
# 'num_of_channels': 3,
# 'num_of_outputs': len(idx_to_char) + 1
# })
# elif config['model'] == "urnn3":
# print("Using windowed URNN with Curtis's recurrence")
# hw = urnn_window.create_model({
# 'input_height': config['network']['input_height'],
# 'cnn_out_size': config['network']['cnn_out_size'],
# 'num_of_channels': 3,
# 'num_of_outputs': len(idx_to_char) + 1,
# 'bridge_width': config['network']['bridge_width']
# })
hw.load_state_dict(torch.load(config['model_load_path']))
if torch.cuda.is_available():
hw.cuda()
dtype = torch.cuda.FloatTensor
print("Using GPU")
else:
dtype = torch.FloatTensor
print("No GPU detected")
message = ""
print(char_to_idx)
voc = " "
for x in range(1, len(idx_to_char) + 1):
voc = voc + idx_to_char[x]
print(voc)
tot_ce = 0.0
tot_we = 0.0
sum_loss = 0.0
sum_wer = 0.0
sum_beam_loss = 0.0
sum_beam_wer = 0.0
steps = 0.0
hw.eval()
# idx_to_char[0] = ''
print(idx_to_char)
print("Validation Set Size = " + str(len(val_dataloader)))
# , model_path="common_crawl_00.prune01111.trie.klm"
#decoder = ctcdecode.CTCBeamDecoder(voc, beam_width=100, beta = 0, model_path="iam5.klm", blank_id=0, log_probs_input=True)
# for x in val_dataloader:
# if x is None:
# continue
# with torch.no_grad():
# line_imgs = Variable(x['line_imgs'].type(dtype), requires_grad=False)
# # labels = Variable(x['labels'], requires_grad=False, volatile=True)
# # label_lengths = Variable(x['label_lengths'], requires_grad=False, volatile=True)
# preds = hw(line_imgs)
# output_batch = preds.permute(1, 0, 2)
# beam_result, beam_scores, timesteps, out_seq_len = decoder.decode(output_batch)
# beam_result = beam_result[:,0,]
# beam_results = []
# o = 0
# for i in beam_result:
# beam_results.append(i[:out_seq_len[o,0].data.cpu().numpy()].data.cpu().numpy())
# o+=1
# beam_strings = []
# for i in beam_results:
# beam_strings.append(string_utils.label2str(i, idx_to_char, False))
# out = output_batch.data.cpu().numpy()
# for i, gt_line in enumerate(x['gt']):
# logits = out[i, ...]
# pred, raw_pred = string_utils.naive_decode(logits)
# pred_str = string_utils.label2str(pred, idx_to_char, False)
# # print(gt_line)
# # lex_pred = string_utils.lexicon_decode(preds[:,i:],pred_str,raw_pred,lexicon,char_to_idx = char_to_idx)
# # print("-----------------")
# # print(gt_line)
# # print(pred_str)
# # print(beam_strings[i])
# # print("-----------------")
# wer = error_rates.wer(gt_line, pred_str)
# beam_wer = error_rates.wer(gt_line, beam_strings[i])
# sum_wer += wer
# sum_beam_wer += beam_wer
# cer = error_rates.cer(gt_line, pred_str)
# beam_cer = error_rates.cer(gt_line, beam_strings[i])
# tot_we += wer * len(gt_line.split())
# tot_ce += cer * len(u' '.join(gt_line.split()))
# sum_loss += cer
# sum_beam_loss += beam_cer
# steps += 1
#
# message = message + "\nTest CER: " + str(sum_loss / steps)
# message = message + "\nTest WER: " + str(sum_wer / steps)
# message = message + "\nBeam CER: " + str(sum_beam_loss / steps)
# message = message + "\nBeam WER: " + str(sum_beam_wer / steps)
# print("Validation CER", sum_loss / steps)
# print("Validation WER", sum_wer / steps)
# print("Beam CER", sum_beam_loss / steps)
# print("Beam wER", sum_beam_wer / steps)
# print("Total character Errors:", tot_ce)
# print("Total word errors", tot_we)
# tot_ce = 0.0
# tot_we = 0.0
# sum_loss = 0.0
# sum_wer = 0.0
# sum_beam_loss = 0.0
# sum_beam_wer = 0.0
# steps = 0.0
# hw.eval()
#
# if not RIMES:
# print("Validation 2 Set Size = " + str(len(val2_dataloader)))
# for x in val2_dataloader:
# if x is None:
# continue
# with torch.no_grad():
# line_imgs = Variable(x['line_imgs'].type(dtype), requires_grad=False)
# # labels = Variable(x['labels'], requires_grad=False, volatile=True)
# # label_lengths = Variable(x['label_lengths'], requires_grad=False, volatile=True)
# preds = hw(line_imgs)
# preds = preds.permute(1, 0, 2)
# beam_result, beam_scores, timesteps, out_seq_len = decoder.decode(preds)
# beam_result = beam_result[:, 0, ]
# beam_results = []
# o = 0
# for i in beam_result:
# beam_results.append(i[:out_seq_len[o, 0].data.cpu().numpy()].data.cpu().numpy())
# o += 1
# beam_strings = []
# for i in beam_results:
# beam_strings.append(string_utils.label2str(i, idx_to_char, False))
# output_batch = preds
# out = output_batch.data.cpu().numpy()
# for i, gt_line in enumerate(x['gt']):
# logits = out[i, ...]
# pred, raw_pred = string_utils.naive_decode(logits)
# pred_str = string_utils.label2str(pred, idx_to_char, False)
# # print("-----------------")
# # print(gt_line)
# # print(pred_str)
# # print(beam_strings[i])
# # print("-----------------")
# wer = error_rates.wer(gt_line, pred_str)
# beam_wer = error_rates.wer(gt_line, beam_strings[i])
# sum_wer += wer
# sum_beam_wer += beam_wer
# cer = error_rates.cer(gt_line, pred_str)
# beam_cer = error_rates.cer(gt_line, beam_strings[i])
# tot_we += wer * len(gt_line.split())
# tot_ce += cer * len(u' '.join(gt_line.split()))
# sum_loss += cer
# sum_beam_loss += beam_cer
# steps += 1
#
# message = message + "\nTest CER: " + str(sum_loss / steps)
# message = message + "\nTest WER: " + str(sum_wer / steps)
# message = message + "\nBeam CER: " + str(sum_beam_loss / steps)
# message = message + "\nBeam WER: " + str(sum_beam_wer / steps)
# print("Validation CER", sum_loss / steps)
# print("Validation WER", sum_wer / steps)
# print("Beam CER", sum_beam_loss / steps)
# print("Beam wER", sum_beam_wer / steps)
# print("Total character Errors:", tot_ce)
# print("Total word errors", tot_we)
# tot_ce = 0.0
# tot_we = 0.0
# sum_loss = 0.0
# sum_wer = 0.0
# sum_beam_loss = 0.0
# sum_beam_wer = 0.0
# steps = 0.0
# hw.eval()
# print("Test Set Size = " + str(len(test_dataloader)))
for x in test_dataloader:
if x is None:
continue
with torch.no_grad():
line_imgs = Variable(x['line_imgs'].type(dtype), requires_grad=False)
# labels = Variable(x['labels'], requires_grad=False, volatile=True)
# label_lengths = Variable(x['label_lengths'], requires_grad=False, volatile=True)
preds = hw(line_imgs)
preds = preds.permute(1, 0, 2)
#beam_result, beam_scores, timesteps, out_seq_len = decoder.decode(preds)
#beam_result = beam_result[:, 0, ]
#beam_results = []
#o = 0
#for i in beam_result:
# beam_results.append(i[:out_seq_len[o, 0].data.cpu().numpy()].data.cpu().numpy())
# o += 1
#beam_strings = []
#for i in beam_results:
# beam_strings.append(string_utils.label2str(i, idx_to_char, False))
output_batch = preds
out = output_batch.data.cpu().numpy()
for i, gt_line in enumerate(x['gt']):
logits = out[i, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
# print("-----------------")
# print(gt_line)
# print(pred_str)
# print(beam_strings[i])
# print("-----------------")
wer = error_rates.wer(gt_line, pred_str)
#beam_wer = error_rates.wer(gt_line, beam_strings[i])
sum_wer += wer
#sum_beam_wer += beam_wer
cer = error_rates.cer(gt_line, pred_str)
#beam_cer = error_rates.cer(gt_line, beam_strings[i])
tot_we += wer * len(gt_line.split())
tot_ce += cer * len(u' '.join(gt_line.split()))
sum_loss += cer
#sum_beam_loss += beam_cer
steps += 1
message = message + "\nTest CER: " + str(sum_loss / steps)
message = message + "\nTest WER: " + str(sum_wer / steps)
#message = message + "\nBeam CER: " + str(sum_beam_loss / steps)
#message = message + "\nBeam WER: " + str(sum_beam_wer / steps)
print("Validation CER", sum_loss / steps)
print("Validation WER", sum_wer / steps)
#print("Beam CER", sum_beam_loss / steps)
#print("Beam wER", sum_beam_wer / steps)
print("Total character Errors:", tot_ce)
print("Total word errors", tot_we)
tot_ce = 0.0
tot_we = 0.0
sum_loss = 0.0
sum_wer = 0.0
#sum_beam_loss = 0.0
#sum_beam_wer = 0.0
steps = 0.0
def main():
config_path = sys.argv[1]
try:
jobID = sys.argv[2]
except:
jobID = ""
print(jobID)
with open(config_path) as f:
config = json.load(f)
try:
model_save_path = sys.argv[3]
if model_save_path[-1] != os.path.sep:
model_save_path = model_save_path + os.path.sep
except:
model_save_path = config['model_save_path']
dirname = os.path.dirname(model_save_path)
print(dirname)
if len(dirname) > 0 and not os.path.exists(dirname):
os.makedirs(dirname)
with open(config_path) as f:
paramList = f.readlines()
for x in paramList:
print(x[:-1])
baseMessage = ""
for line in paramList:
baseMessage = baseMessage + line
# print(baseMessage)
idx_to_char, char_to_idx = character_set.load_char_set(
config['character_set_path'])
train_dataset = HwDataset(
config['training_set_path'],
char_to_idx,
img_height=config['network']['input_height'],
root_path=config['image_root_directory'],
augmentation=config['augmentation'],
)
try:
test_dataset = HwDataset(config['validation_set_path'],
char_to_idx,
img_height=config['network']['input_height'],
root_path=config['image_root_directory'])
except KeyError as e:
print("No validation set found, generating one")
master = train_dataset
print("Total of " + str(len(master)) + " Training Examples")
n = len(master) # how many total elements you have
n_test = int(n * .1)
n_train = n - n_test
idx = list(range(n)) # indices to all elements
train_idx = idx[:n_train]
test_idx = idx[n_train:]
test_dataset = data.Subset(master, test_idx)
train_dataset = data.Subset(master, train_idx)
train_dataloader = DataLoader(train_dataset,
batch_size=config['batch_size'],
shuffle=False,
num_workers=1,
collate_fn=hw_dataset.collate)
test_dataloader = DataLoader(test_dataset,
batch_size=config['batch_size'],
shuffle=False,
num_workers=1,
collate_fn=hw_dataset.collate)
print("Train Dataset Length: " + str(len(train_dataset)))
print("Test Dataset Length: " + str(len(test_dataset)))
hw = model.create_model(len(idx_to_char))
# hw = model.create_model({
# 'input_height': config['network']['input_height'],
# 'cnn_out_size': config['network']['cnn_out_size'],
# 'num_of_channels': 3,
# 'num_of_outputs': len(idx_to_char) + 1,
# 'bridge_width': config['network']['bridge_width']
# })
if torch.cuda.is_available():
hw.cuda()
dtype = torch.cuda.FloatTensor
print("Using GPU")
else:
dtype = torch.FloatTensor
print("No GPU detected")
optimizer = torch.optim.Adadelta(hw.parameters(),
lr=config['network']['learning_rate'])
criterion = CTCLoss(reduction='sum', zero_infinity=True)
lowest_loss = float('inf')
best_distance = 0
for epoch in range(1000):
torch.enable_grad()
startTime = time.time()
message = baseMessage
sum_loss = 0.0
sum_wer_loss = 0.0
steps = 0.0
hw.train()
disp_ctc_loss = 0.0
disp_loss = 0.0
gt = ""
ot = ""
loss = 0.0
print("Train Set Size = " + str(len(train_dataloader)))
prog_bar = tqdm(enumerate(train_dataloader),
total=len(train_dataloader))
for i, x in prog_bar:
# message = str("CER: " + str(disp_loss) +"\nGT: " +gt +"\nex: "+out+"\nProgress")
prog_bar.set_description(
f'CER: {disp_loss} CTC: {loss} Ground Truth: |{gt}| Network Output: |{ot}|'
)
line_imgs = x['line_imgs']
rem = line_imgs.shape[3] % 32
if rem != 0:
imgshape = line_imgs.shape
temp = torch.zeros(imgshape[0], imgshape[1], imgshape[2],
imgshape[3] + (32 - rem))
temp[:, :, :, :imgshape[3]] = line_imgs
line_imgs = temp
del temp
line_imgs = Variable(line_imgs.type(dtype), requires_grad=False)
labels = Variable(x['labels'], requires_grad=False)
label_lengths = Variable(x['label_lengths'], requires_grad=False)
preds = hw(line_imgs).cpu()
preds_size = Variable(
torch.IntTensor([preds.size(0)] * preds.size(1)))
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
loss = criterion(preds, labels, preds_size, label_lengths)
# print(loss)
optimizer.zero_grad()
loss.backward()
optimizer.step()
# if i == 0:
# for i in xrange(out.shape[0]):
# pred, pred_raw = string_utils.naive_decode(out[i,...])
# pred_str = string_utils.label2str(pred_raw, idx_to_char, True)
# print(pred_str)
for j in range(out.shape[0]):
logits = out[j, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
gt_str = x['gt'][j]
cer = error_rates.cer(gt_str, pred_str)
wer = error_rates.wer(gt_str, pred_str)
gt = gt_str
ot = pred_str
sum_loss += cer
sum_wer_loss += wer
steps += 1
disp_loss = sum_loss / steps
eTime = time.time() - startTime
message = message + "\n" + "Epoch: " + str(
epoch) + " Training CER: " + str(
sum_loss / steps) + " Training WER: " + str(
sum_wer_loss /
steps) + "\n" + "Time: " + str(eTime) + " Seconds"
print("Epoch: " + str(epoch) + " Training CER", sum_loss / steps)
print("Training WER: " + str(sum_wer_loss / steps))
print("Time: " + str(eTime) + " Seconds")
sum_loss = 0.0
sum_wer_loss = 0.0
steps = 0.0
hw.eval()
print("Validation Set Size = " + str(len(test_dataloader)))
for x in tqdm(test_dataloader):
torch.no_grad()
line_imgs = Variable(x['line_imgs'].type(dtype),
requires_grad=False)
# labels = Variable(x['labels'], requires_grad=False, volatile=True)
# label_lengths = Variable(x['label_lengths'], requires_grad=False, volatile=True)
preds = hw(line_imgs).cpu()
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
for i, gt_line in enumerate(x['gt']):
logits = out[i, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
cer = error_rates.cer(gt_line, pred_str)
wer = error_rates.wer(gt_line, pred_str)
sum_wer_loss += wer
sum_loss += cer
steps += 1
message = message + "\nTest CER: " + str(sum_loss / steps)
message = message + "\nTest WER: " + str(sum_wer_loss / steps)
print("Test CER", sum_loss / steps)
print("Test WER", sum_wer_loss / steps)
best_distance += 1
metric = "CER"
if (metric == "CER"):
if lowest_loss > sum_loss / steps:
lowest_loss = sum_loss / steps
print("Saving Best")
message = message + "\nBest Result :)"
torch.save(hw.state_dict(),
os.path.join(model_save_path + str(epoch) + ".pt"))
email_update(message, jobID)
best_distance = 0
if best_distance > 800:
break
elif (metric == "WER"):
if lowest_loss > sum_wer_loss / steps:
lowest_loss = sum_wer_loss / steps
print("Saving Best")
message = message + "\nBest Result :)"
torch.save(hw.state_dict(),
os.path.join(model_save_path + str(epoch) + ".pt"))
email_update(message, jobID)
best_distance = 0
if best_distance > 80:
break
else:
print("This is actually very bad")
def main():
config_path = sys.argv[1]
with open(config_path) as f:
config = json.load(f)
idx_to_char, char_to_idx = character_set.load_char_set(
config['character_set_path'])
train_dataset = HwDataset(config['training_set_path'],
char_to_idx,
img_height=config['network']['input_height'],
root_path=config['image_root_directory'],
augmentation=True)
train_dataloader = DataLoader(train_dataset,
batch_size=8,
shuffle=False,
num_workers=0,
collate_fn=hw_dataset.collate)
test_dataset = HwDataset(config['validation_set_path'],
char_to_idx,
img_height=config['network']['input_height'],
root_path=config['image_root_directory'])
test_dataloader = DataLoader(test_dataset,
batch_size=8,
shuffle=False,
num_workers=0,
collate_fn=hw_dataset.collate)
hw = crnn.create_model({
'cnn_out_size': config['network']['cnn_out_size'],
'num_of_channels': 3,
'num_of_outputs': len(idx_to_char) + 1
})
if torch.cuda.is_available():
hw.cuda()
dtype = torch.cuda.FloatTensor
print("Using GPU")
else:
dtype = torch.FloatTensor
print("No GPU detected")
optimizer = torch.optim.Adam(hw.parameters(),
lr=config['network']['learning_rate'])
criterion = CTCLoss()
lowest_loss = float('inf')
for epoch in range(1000):
print('epoch', epoch)
sum_loss = 0.0
steps = 0.0
hw.train()
for i, x in enumerate(train_dataloader):
print(i, '/', len(train_dataloader))
if x['line_imgs'].shape[3] > 500:
continue
line_imgs = Variable(x['line_imgs'].type(dtype),
requires_grad=False)
labels = Variable(x['labels'], requires_grad=False)
label_lengths = Variable(x['label_lengths'], requires_grad=False)
try:
preds = hw(line_imgs).cpu()
except Exception as e:
print(e)
continue
preds_size = Variable(
torch.IntTensor([preds.size(0)] * preds.size(1)))
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
loss = criterion(preds, labels, preds_size, label_lengths)
optimizer.zero_grad()
loss.backward()
optimizer.step()
#if i == 0:
# for i in xrange(out.shape[0]):
# pred, pred_raw = string_utils.naive_decode(out[i,...])
# pred_str = string_utils.label2str(pred_raw, idx_to_char, True)
# print(pred_str)
for j in range(out.shape[0]):
logits = out[j, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
gt_str = x['gt'][j]
cer = error_rates.cer(gt_str, pred_str)
sum_loss += cer
steps += 1
if steps == 0.0 or steps == 0:
cer = "Error"
else:
cer = sum_loss / steps
print("Training CER:", cer)
sum_loss = 0.0
steps = 0.0
hw.eval()
for x in test_dataloader:
line_imgs = Variable(x['line_imgs'].type(dtype),
requires_grad=False,
volatile=True)
labels = Variable(x['labels'], requires_grad=False, volatile=True)
label_lengths = Variable(x['label_lengths'],
requires_grad=False,
volatile=True)
try:
preds = hw(line_imgs).cpu()
except Exception as e:
print(e)
continue
output_batch = preds.permute(1, 0, 2)
out = output_batch.data.cpu().numpy()
for i, gt_line in enumerate(x['gt']):
logits = out[i, ...]
pred, raw_pred = string_utils.naive_decode(logits)
pred_str = string_utils.label2str(pred, idx_to_char, False)
cer = error_rates.cer(gt_line, pred_str)
sum_loss += cer
steps += 1
if steps == 0.0 or steps == 0:
cer = "Error"
else:
cer = sum_loss / steps
print("Test CER", cer)
if lowest_loss > sum_loss / steps:
lowest_loss = sum_loss / steps
print("Saving Best")
dirname = os.path.dirname(config['model_save_path'])
if len(dirname) > 0 and not os.path.exists(dirname):
os.makedirs(dirname)
torch.save(hw.state_dict(),
os.path.join(config['model_save_path']))