wassname/denoising-diffusion-pytorch
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fix data not being normalized to range of -1 to 1

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This commit is contained in:
Phil Wang
2021-06-21 18:51:36 -07:00
parent f5916111f8
commit 16c9ae7bb3
2 changed files with 5 additions and 3 deletions
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denoising_diffusion_pytorch/denoising_diffusion_pytorch.py
+4 -2
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@@ -455,7 +455,8 @@ class Dataset(data.Dataset):
transforms.Resize(image_size),
transforms.RandomHorizontalFlip(),
transforms.CenterCrop(image_size),
transforms.ToTensor()
transforms.ToTensor(),
transforms.Lambda(lambda t: (t * 2) - 1)
])
def __len__(self):
@@ -553,7 +554,8 @@ class Trainer(object):
batches = num_to_groups(36, self.batch_size)
all_images_list = list(map(lambda n: self.ema_model.sample(batch_size=n), batches))
all_images = torch.cat(all_images_list, dim=0)
utils.save_image(all_images, str(RESULTS_FOLDER / f'sample-{milestone}.png'), nrow=6)
all_images = (all_images + 1) * 0.5
utils.save_image(all_images, str(RESULTS_FOLDER / f'sample-{milestone}.png'), nrow = 6)
self.save(milestone)
self.step += 1