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Merge pull request #471 from pamparamm/multires-noise

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Multi-Resolution Noise
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Kohya S
2023-05-03 11:17:21 +09:00
committed by GitHub
parent e1143caf38 b18d099291
commit 2e688b7cd3
7 changed files with 42 additions and 5 deletions
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4
train_db.py
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@@ -23,7 +23,7 @@ from library.config_util import (
BlueprintGenerator,
)
import library.custom_train_functions as custom_train_functions
from library.custom_train_functions import apply_snr_weight, get_weighted_text_embeddings
from library.custom_train_functions import apply_snr_weight, get_weighted_text_embeddings, pyramid_noise_like
def train(args):
@@ -273,6 +273,8 @@ def train(args):
if args.noise_offset:
# https://www.crosslabs.org//blog/diffusion-with-offset-noise
noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device)
elif args.multires_noise_iterations:
noise = pyramid_noise_like(noise, latents.device, args.multires_noise_iterations, args.multires_noise_discount)
# Get the text embedding for conditioning
with torch.set_grad_enabled(global_step < args.stop_text_encoder_training):