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[RF inversion community pipeline] add eta_decay #10199

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Merged
merged 6 commits into from
Dec 13, 2024
Merged

[RF inversion community pipeline] add eta_decay #10199

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6aaa268
add decay
linoytsaban Dec 11, 2024
042c091
Merge branch 'huggingface:main' into rf-inversion
linoytsaban Dec 12, 2024
baae6e7
add decay
linoytsaban Dec 12, 2024
e71d44c
Merge remote-tracking branch 'origin/rf-inversion' into rf-inversion
linoytsaban Dec 12, 2024
3e352fe
style
linoytsaban Dec 13, 2024
5c81811
Merge branch 'main' into rf-inversion
linoytsaban Dec 13, 2024
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11 changes: 5 additions & 6 deletions examples/community/pipeline_flux_rf_inversion.py
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Original file line number Diff line number Diff line change
Expand Up @@ -648,6 +648,8 @@ def __call__(
height: Optional[int] = None,
width: Optional[int] = None,
eta: float = 1.0,
decay_eta: Optional[bool] = False,
eta_decay_power: Optional[float] = 1.0,
strength: float = 1.0,
start_timestep: float = 0,
stop_timestep: float = 0.25,
Expand Down Expand Up @@ -880,12 +882,9 @@ def __call__(
v_t = -noise_pred
v_t_cond = (y_0 - latents) / (1 - t_i)
eta_t = eta if start_timestep <= i < stop_timestep else 0.0
if start_timestep <= i < stop_timestep:
# controlled vector field
v_hat_t = v_t + eta * (v_t_cond - v_t)

else:
v_hat_t = v_t
if decay_eta:
eta_t = eta_t * (1 - i / num_inference_steps) ** eta_decay_power # Decay eta over the loop
v_hat_t = v_t + eta_t * (v_t_cond - v_t)

# SDE Eq: 17 from https://arxiv.org/pdf/2410.10792
latents = latents + v_hat_t * (sigmas[i] - sigmas[i + 1])
Expand Down
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