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utils.py
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utils.py
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import os
import torch
import shutil
import numpy as np
import matplotlib.pyplot as plt
from PIL import Image
cmap = plt.cm.viridis
def parse_command():
model_names = ['resnet18', 'resnet50']
loss_names = ['l1', 'l2']
data_names = ['nyudepthv2', 'kitti']
from dataloaders.dense_to_sparse import UniformSampling, SimulatedStereo
sparsifier_names = [x.name for x in [UniformSampling, SimulatedStereo]]
from models import Decoder
decoder_names = Decoder.names
from dataloaders.dataloader import MyDataloader
modality_names = MyDataloader.modality_names
import argparse
parser = argparse.ArgumentParser(description='Sparse-to-Dense')
parser.add_argument('--arch', '-a', metavar='ARCH', default='resnet18', choices=model_names,
help='model architecture: ' + ' | '.join(model_names) + ' (default: resnet18)')
parser.add_argument('--data', metavar='DATA', default='nyudepthv2',
choices=data_names,
help='dataset: ' + ' | '.join(data_names) + ' (default: nyudepthv2)')
parser.add_argument('--modality', '-m', metavar='MODALITY', default='rgb', choices=modality_names,
help='modality: ' + ' | '.join(modality_names) + ' (default: rgb)')
parser.add_argument('-s', '--num-samples', default=0, type=int, metavar='N',
help='number of sparse depth samples (default: 0)')
parser.add_argument('--max-depth', default=-1.0, type=float, metavar='D',
help='cut-off depth of sparsifier, negative values means infinity (default: inf [m])')
parser.add_argument('--sparsifier', metavar='SPARSIFIER', default=UniformSampling.name, choices=sparsifier_names,
help='sparsifier: ' + ' | '.join(sparsifier_names) + ' (default: ' + UniformSampling.name + ')')
parser.add_argument('--decoder', '-d', metavar='DECODER', default='deconv2', choices=decoder_names,
help='decoder: ' + ' | '.join(decoder_names) + ' (default: deconv2)')
parser.add_argument('-j', '--workers', default=10, type=int, metavar='N',
help='number of data loading workers (default: 10)')
parser.add_argument('--epochs', default=15, type=int, metavar='N',
help='number of total epochs to run (default: 15)')
parser.add_argument('-c', '--criterion', metavar='LOSS', default='l1', choices=loss_names,
help='loss function: ' + ' | '.join(loss_names) + ' (default: l1)')
parser.add_argument('-b', '--batch-size', default=8, type=int, help='mini-batch size (default: 8)')
parser.add_argument('--lr', '--learning-rate', default=0.01, type=float,
metavar='LR', help='initial learning rate (default 0.01)')
parser.add_argument('--momentum', default=0.9, type=float, metavar='M',
help='momentum')
parser.add_argument('--weight-decay', '--wd', default=1e-4, type=float,
metavar='W', help='weight decay (default: 1e-4)')
parser.add_argument('--print-freq', '-p', default=10, type=int,
metavar='N', help='print frequency (default: 10)')
parser.add_argument('--resume', default='', type=str, metavar='PATH',
help='path to latest checkpoint (default: none)')
parser.add_argument('-e', '--evaluate', dest='evaluate', type=str, default='',
help='evaluate model on validation set')
parser.add_argument('--no-pretrain', dest='pretrained', action='store_false',
help='not to use ImageNet pre-trained weights')
parser.set_defaults(pretrained=True)
args = parser.parse_args()
if args.modality == 'rgb' and args.num_samples != 0:
print("number of samples is forced to be 0 when input modality is rgb")
args.num_samples = 0
if args.modality == 'rgb' and args.max_depth != 0.0:
print("max depth is forced to be 0.0 when input modality is rgb/rgbd")
args.max_depth = 0.0
return args
def save_checkpoint(state, is_best, epoch, output_directory):
checkpoint_filename = os.path.join(output_directory, 'checkpoint-' + str(epoch) + '.pth.tar')
torch.save(state, checkpoint_filename)
if is_best:
best_filename = os.path.join(output_directory, 'model_best.pth.tar')
shutil.copyfile(checkpoint_filename, best_filename)
if epoch > 0:
prev_checkpoint_filename = os.path.join(output_directory, 'checkpoint-' + str(epoch-1) + '.pth.tar')
if os.path.exists(prev_checkpoint_filename):
os.remove(prev_checkpoint_filename)
def adjust_learning_rate(optimizer, epoch, lr_init):
"""Sets the learning rate to the initial LR decayed by 10 every 5 epochs"""
lr = lr_init * (0.1 ** (epoch // 5))
for param_group in optimizer.param_groups:
param_group['lr'] = lr
def get_output_directory(args):
output_directory = os.path.join('results',
'{}.sparsifier={}.samples={}.modality={}.arch={}.decoder={}.criterion={}.lr={}.bs={}.pretrained={}'.
format(args.data, args.sparsifier, args.num_samples, args.modality, \
args.arch, args.decoder, args.criterion, args.lr, args.batch_size, \
args.pretrained))
return output_directory
def colored_depthmap(depth, d_min=None, d_max=None):
if d_min is None:
d_min = np.min(depth)
if d_max is None:
d_max = np.max(depth)
depth_relative = (depth - d_min) / (d_max - d_min)
return 255 * cmap(depth_relative)[:,:,:3] # H, W, C
def merge_into_row(input, depth_target, depth_pred):
rgb = 255 * np.transpose(np.squeeze(input.cpu().numpy()), (1,2,0)) # H, W, C
depth_target_cpu = np.squeeze(depth_target.cpu().numpy())
depth_pred_cpu = np.squeeze(depth_pred.data.cpu().numpy())
d_min = min(np.min(depth_target_cpu), np.min(depth_pred_cpu))
d_max = max(np.max(depth_target_cpu), np.max(depth_pred_cpu))
depth_target_col = colored_depthmap(depth_target_cpu, d_min, d_max)
depth_pred_col = colored_depthmap(depth_pred_cpu, d_min, d_max)
img_merge = np.hstack([rgb, depth_target_col, depth_pred_col])
return img_merge
def merge_into_row_with_gt(input, depth_input, depth_target, depth_pred):
rgb = 255 * np.transpose(np.squeeze(input.cpu().numpy()), (1,2,0)) # H, W, C
depth_input_cpu = np.squeeze(depth_input.cpu().numpy())
depth_target_cpu = np.squeeze(depth_target.cpu().numpy())
depth_pred_cpu = np.squeeze(depth_pred.data.cpu().numpy())
d_min = min(np.min(depth_input_cpu), np.min(depth_target_cpu), np.min(depth_pred_cpu))
d_max = max(np.max(depth_input_cpu), np.max(depth_target_cpu), np.max(depth_pred_cpu))
depth_input_col = colored_depthmap(depth_input_cpu, d_min, d_max)
depth_target_col = colored_depthmap(depth_target_cpu, d_min, d_max)
depth_pred_col = colored_depthmap(depth_pred_cpu, d_min, d_max)
img_merge = np.hstack([rgb, depth_input_col, depth_target_col, depth_pred_col])
return img_merge
def add_row(img_merge, row):
return np.vstack([img_merge, row])
def save_image(img_merge, filename):
img_merge = Image.fromarray(img_merge.astype('uint8'))
img_merge.save(filename)