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[train_dreambooth_flux] Add LANCZOS as the default interpolation mode for image resizing #11395

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Merged
merged 2 commits into from
Apr 23, 2025
Merged

[train_dreambooth_flux] Add LANCZOS as the default interpolation mode for image resizing #11395

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[train_dreambooth_flux] Add LANCZOS as the default interpolation mode…
ishandutta0098 Apr 23, 2025
3eec660
Merge branch 'main' into lanczos-interpolation-train-dreambooth-flux
asomoza Apr 23, 2025
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14 changes: 13 additions & 1 deletion examples/dreambooth/train_dreambooth_flux.py
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Original file line number Diff line number Diff line change
Expand Up @@ -618,6 +618,15 @@ def parse_args(input_args=None):
),
)
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
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 @@ -737,7 +746,10 @@ def __init__(
self.instance_images.extend(itertools.repeat(img, repeats))

self.pixel_values = []
train_resize = transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR)
interpolation = getattr(transforms.InterpolationMode, args.image_interpolation_mode.upper(), None)
if interpolation is None:
raise ValueError(f"Unsupported interpolation mode {interpolation=}.")
train_resize = transforms.Resize(size, interpolation=interpolation)
train_crop = transforms.CenterCrop(size) if center_crop else transforms.RandomCrop(size)
train_flip = transforms.RandomHorizontalFlip(p=1.0)
train_transforms = transforms.Compose(
Expand Down