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[train_dreambooth_lora.py] Set LANCZOS as default interpolation mode for resizing #11421

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Merged
merged 2 commits into from
Apr 26, 2025
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[train_dreambooth_lora.py] Set LANCZOS as default interpolation mode for resizing #11421

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Set LANCZOS as default interpolation mode for resizing
merterbak Apr 25, 2025
2a636e0
[train_dreambooth_lora.py] Set LANCZOS as default interpolation mode …
merterbak Apr 26, 2025
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15 changes: 14 additions & 1 deletion examples/dreambooth/train_dreambooth_lora.py
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Original file line number Diff line number Diff line change
Expand Up @@ -524,6 +524,15 @@ def parse_args(input_args=None):
default=4,
help=("The dimension of the LoRA update matrices."),
)
parser.add_argument(
"--image_interpolation_mode",
type=str,
default="lanczos",
choices=[
f.lower() for f in dir(transforms.InterpolationMode) if not f.startswith("__") and not f.endswith("__")
],
help="The image interpolation method to use for resizing images.",
)

if input_args is not None:
args = parser.parse_args(input_args)
Expand Down Expand Up @@ -601,9 +610,13 @@ def __init__(
else:
self.class_data_root = None

interpolation = getattr(transforms.InterpolationMode, args.image_interpolation_mode.upper(), None)
if interpolation is None:
raise ValueError(f"Unsupported interpolation mode {interpolation=}.")

self.image_transforms = transforms.Compose(
[
transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR),
transforms.Resize(size, interpolation=interpolation),
transforms.CenterCrop(size) if center_crop else transforms.RandomCrop(size),
transforms.ToTensor(),
transforms.Normalize([0.5], [0.5]),
Expand Down
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