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import os.path
from data.base_dataset import BaseDataset, get_params, get_transform, normalize
from data.image_folder import make_dataset
from PIL import Image
class AlignedDataset(BaseDataset):
def initialize(self, opt):
self.opt = opt
self.root = opt.dataroot
### input A (label maps)
dir_A = '_A' if self.opt.label_nc == 0 else '_label'
self.dir_A = os.path.join(opt.dataroot, opt.phase + dir_A)
self.A_paths = sorted(make_dataset(self.dir_A))
### input B (real images)
if opt.isTrain or opt.use_encoded_image:
dir_B = '_B' if self.opt.label_nc == 0 else '_img'
self.dir_B = os.path.join(opt.dataroot, opt.phase + dir_B)
self.B_paths = sorted(make_dataset(self.dir_B))
### instance maps
if not opt.no_instance:
self.dir_inst = os.path.join(opt.dataroot, opt.phase + '_inst')
self.inst_paths = sorted(make_dataset(self.dir_inst))
### load precomputed instance-wise encoded features
if opt.load_features:
self.dir_feat = os.path.join(opt.dataroot, opt.phase + '_feat')
print('----------- loading features from %s ----------' % self.dir_feat)
self.feat_paths = sorted(make_dataset(self.dir_feat))
self.dataset_size = len(self.A_paths)
def __getitem__(self, index):
### input A (label maps)
A_path = self.A_paths[index]
A = Image.open(A_path)
params = get_params(self.opt, A.size)
if self.opt.label_nc == 0:
transform_A = get_transform(self.opt, params)
A_tensor = transform_A(A.convert('RGB'))
else:
transform_A = get_transform(self.opt, params, method=Image.NEAREST, normalize=False)
A_tensor = transform_A(A) * 255.0
B_tensor = inst_tensor = feat_tensor = 0
### input B (real images)
if self.opt.isTrain or self.opt.use_encoded_image:
B_path = self.B_paths[index]
B = Image.open(B_path).convert('RGB')
transform_B = get_transform(self.opt, params)
B_tensor = transform_B(B)
### if using instance maps
if not self.opt.no_instance:
inst_path = self.inst_paths[index]
inst = Image.open(inst_path)
inst_tensor = transform_A(inst)
if self.opt.load_features:
feat_path = self.feat_paths[index]
feat = Image.open(feat_path).convert('RGB')
norm = normalize()
feat_tensor = norm(transform_A(feat))
input_dict = {'label': A_tensor, 'inst': inst_tensor, 'image': B_tensor,
'feat': feat_tensor, 'path': A_path}
return input_dict
def __len__(self):
return len(self.A_paths) // self.opt.batchSize * self.opt.batchSize
def name(self):
return 'AlignedDataset' |