227 lines
10 KiB
Python
Executable File
227 lines
10 KiB
Python
Executable File
import os
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import time
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import string
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import argparse
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import torch
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import torch.backends.cudnn as cudnn
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import torch.utils.data
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import numpy as np
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from nltk.metrics.distance import edit_distance
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from utils import CTCLabelConverter, AttnLabelConverter, Averager
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from dataset import hierarchical_dataset, AlignCollate
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from model import Model
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device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
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def benchmark_all_eval(model, criterion, converter, opt, calculate_infer_time=False):
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""" evaluation with 10 benchmark evaluation datasets """
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# The evaluation datasets, dataset order is same with Table 1 in our paper.
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eval_data_list = ['IIIT5k_3000', 'SVT', 'IC03_860', 'IC03_867', 'IC13_857',
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'IC13_1015', 'IC15_1811', 'IC15_2077', 'SVTP', 'CUTE80']
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if calculate_infer_time:
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evaluation_batch_size = 1 # batch_size should be 1 to calculate the GPU inference time per image.
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else:
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evaluation_batch_size = opt.batch_size
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list_accuracy = []
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total_forward_time = 0
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total_evaluation_data_number = 0
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total_correct_number = 0
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print('-' * 80)
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for eval_data in eval_data_list:
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eval_data_path = os.path.join(opt.eval_data, eval_data)
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AlignCollate_evaluation = AlignCollate(imgH=opt.imgH, imgW=opt.imgW, keep_ratio_with_pad=opt.PAD)
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eval_data = hierarchical_dataset(root=eval_data_path, opt=opt)
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evaluation_loader = torch.utils.data.DataLoader(
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eval_data, batch_size=evaluation_batch_size,
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shuffle=False,
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num_workers=int(opt.workers),
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collate_fn=AlignCollate_evaluation, pin_memory=True)
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_, accuracy_by_best_model, norm_ED_by_best_model, _, _, infer_time, length_of_data = validation(
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model, criterion, evaluation_loader, converter, opt)
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list_accuracy.append(f'{accuracy_by_best_model:0.3f}')
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total_forward_time += infer_time
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total_evaluation_data_number += len(eval_data)
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total_correct_number += accuracy_by_best_model * length_of_data
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print('Acc %0.3f\t normalized_ED %0.3f' % (accuracy_by_best_model, norm_ED_by_best_model))
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print('-' * 80)
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averaged_forward_time = total_forward_time / total_evaluation_data_number * 1000
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total_accuracy = total_correct_number / total_evaluation_data_number
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params_num = sum([np.prod(p.size()) for p in model.parameters()])
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evaluation_log = 'accuracy: '
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for name, accuracy in zip(eval_data_list, list_accuracy):
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evaluation_log += f'{name}: {accuracy}\t'
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evaluation_log += f'total_accuracy: {total_accuracy:0.3f}\t'
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evaluation_log += f'averaged_infer_time: {averaged_forward_time:0.3f}\t# parameters: {params_num/1e6:0.3f}'
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print(evaluation_log)
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with open(f'./result/{opt.experiment_name}/log_all_evaluation.txt', 'a') as log:
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log.write(evaluation_log + '\n')
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return None
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def validation(model, criterion, evaluation_loader, converter, opt):
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""" validation or evaluation """
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n_correct = 0
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norm_ED = 0
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length_of_data = 0
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infer_time = 0
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valid_loss_avg = Averager()
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for i, (image_tensors, labels) in enumerate(evaluation_loader):
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batch_size = image_tensors.size(0)
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length_of_data = length_of_data + batch_size
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image = image_tensors.to(device)
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# For max length prediction
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length_for_pred = torch.IntTensor([opt.batch_max_length] * batch_size).to(device)
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text_for_pred = torch.LongTensor(batch_size, opt.batch_max_length + 1).fill_(0).to(device)
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text_for_loss, length_for_loss = converter.encode(labels, batch_max_length=opt.batch_max_length)
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start_time = time.time()
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if 'CTC' in opt.Prediction:
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preds = model(image, text_for_pred).log_softmax(2)
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forward_time = time.time() - start_time
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# Calculate evaluation loss for CTC deocder.
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preds_size = torch.IntTensor([preds.size(1)] * batch_size)
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preds = preds.permute(1, 0, 2) # to use CTCloss format
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cost = criterion(preds, text_for_loss, preds_size, length_for_loss)
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# Select max probabilty (greedy decoding) then decode index to character
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_, preds_index = preds.max(2)
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preds_index = preds_index.transpose(1, 0).contiguous().view(-1)
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preds_str = converter.decode(preds_index.data, preds_size.data)
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else:
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preds = model(image, text_for_pred, is_train=False)
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forward_time = time.time() - start_time
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preds = preds[:, :text_for_loss.shape[1] - 1, :]
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target = text_for_loss[:, 1:] # without [GO] Symbol
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cost = criterion(preds.contiguous().view(-1, preds.shape[-1]), target.contiguous().view(-1))
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# select max probabilty (greedy decoding) then decode index to character
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_, preds_index = preds.max(2)
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preds_str = converter.decode(preds_index, length_for_pred)
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labels = converter.decode(text_for_loss[:, 1:], length_for_loss)
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infer_time += forward_time
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valid_loss_avg.add(cost)
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# calculate accuracy.
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for pred, gt in zip(preds_str, labels):
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if 'Attn' in opt.Prediction:
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pred = pred[:pred.find('[s]')] # prune after "end of sentence" token ([s])
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gt = gt[:gt.find('[s]')]
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if pred == gt:
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n_correct += 1
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if len(gt) == 0:
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norm_ED += 1
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else:
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norm_ED += edit_distance(pred, gt) / len(gt)
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accuracy = n_correct / float(length_of_data) * 100
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return valid_loss_avg.val(), accuracy, norm_ED, preds_str, labels, infer_time, length_of_data
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def test(opt):
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""" model configuration """
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if 'CTC' in opt.Prediction:
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converter = CTCLabelConverter(opt.character)
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else:
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converter = AttnLabelConverter(opt.character)
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opt.num_class = len(converter.character)
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if opt.rgb:
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opt.input_channel = 3
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model = Model(opt)
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print('model input parameters', opt.imgH, opt.imgW, opt.num_fiducial, opt.input_channel, opt.output_channel,
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opt.hidden_size, opt.num_class, opt.batch_max_length, opt.Transformation, opt.FeatureExtraction,
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opt.SequenceModeling, opt.Prediction)
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model = torch.nn.DataParallel(model).to(device)
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# load model
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print('loading pretrained model from %s' % opt.saved_model)
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model.load_state_dict(torch.load(opt.saved_model))
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opt.experiment_name = '_'.join(opt.saved_model.split('/')[1:])
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# print(model)
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""" keep evaluation model and result logs """
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os.makedirs(f'./result/{opt.experiment_name}', exist_ok=True)
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os.system(f'cp {opt.saved_model} ./result/{opt.experiment_name}/')
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""" setup loss """
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if 'CTC' in opt.Prediction:
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criterion = torch.nn.CTCLoss(zero_infinity=True).to(device)
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else:
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criterion = torch.nn.CrossEntropyLoss(ignore_index=0).to(device) # ignore [GO] token = ignore index 0
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""" evaluation """
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model.eval()
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with torch.no_grad():
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if opt.benchmark_all_eval: # evaluation with 10 benchmark evaluation datasets
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benchmark_all_eval(model, criterion, converter, opt)
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else:
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AlignCollate_evaluation = AlignCollate(imgH=opt.imgH, imgW=opt.imgW, keep_ratio_with_pad=opt.PAD)
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eval_data = hierarchical_dataset(root=opt.eval_data, opt=opt)
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evaluation_loader = torch.utils.data.DataLoader(
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eval_data, batch_size=opt.batch_size,
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shuffle=False,
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num_workers=int(opt.workers),
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collate_fn=AlignCollate_evaluation, pin_memory=True)
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_, accuracy_by_best_model, _, _, _, _, _ = validation(
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model, criterion, evaluation_loader, converter, opt)
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print(accuracy_by_best_model)
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with open('./result/{0}/log_evaluation.txt'.format(opt.experiment_name), 'a') as log:
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log.write(str(accuracy_by_best_model) + '\n')
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('--eval_data', required=True, help='path to evaluation dataset')
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parser.add_argument('--benchmark_all_eval', action='store_true', help='evaluate 10 benchmark evaluation datasets')
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parser.add_argument('--workers', type=int, help='number of data loading workers', default=4)
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parser.add_argument('--batch_size', type=int, default=192, help='input batch size')
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parser.add_argument('--saved_model', required=True, help="path to saved_model to evaluation")
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""" Data processing """
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parser.add_argument('--batch_max_length', type=int, default=25, help='maximum-label-length')
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parser.add_argument('--imgH', type=int, default=32, help='the height of the input image')
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parser.add_argument('--imgW', type=int, default=100, help='the width of the input image')
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parser.add_argument('--rgb', action='store_true', help='use rgb input')
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parser.add_argument('--character', type=str, default='0123456789abcdefghijklmnopqrstuvwxyz', help='character label')
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parser.add_argument('--sensitive', action='store_true', help='for sensitive character mode')
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parser.add_argument('--PAD', action='store_true', help='whether to keep ratio then pad for image resize')
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parser.add_argument('--data_filtering_off', action='store_true', help='for data_filtering_off mode')
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""" Model Architecture """
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parser.add_argument('--Transformation', type=str, required=True, help='Transformation stage. None|TPS')
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parser.add_argument('--FeatureExtraction', type=str, required=True, help='FeatureExtraction stage. VGG|RCNN|ResNet')
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parser.add_argument('--SequenceModeling', type=str, required=True, help='SequenceModeling stage. None|BiLSTM')
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parser.add_argument('--Prediction', type=str, required=True, help='Prediction stage. CTC|Attn')
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parser.add_argument('--num_fiducial', type=int, default=20, help='number of fiducial points of TPS-STN')
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parser.add_argument('--input_channel', type=int, default=1, help='the number of input channel of Feature extractor')
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parser.add_argument('--output_channel', type=int, default=512,
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help='the number of output channel of Feature extractor')
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parser.add_argument('--hidden_size', type=int, default=256, help='the size of the LSTM hidden state')
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opt = parser.parse_args()
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""" vocab / character number configuration """
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if opt.sensitive:
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opt.character = string.printable[:-6] # same with ASTER setting (use 94 char).
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cudnn.benchmark = True
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cudnn.deterministic = True
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opt.num_gpu = torch.cuda.device_count()
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test(opt)
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