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Fix img2img DDIM index out of bound #1137

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Merged
merged 1 commit into from
Oct 18, 2022
Merged

Fix img2img DDIM index out of bound #1137

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7 changes: 4 additions & 3 deletions ldm/modules/diffusionmodules/util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,8 @@ def make_ddim_timesteps(
):
if ddim_discr_method == 'uniform':
c = num_ddpm_timesteps // num_ddim_timesteps
ddim_timesteps = np.asarray(list(range(0, num_ddpm_timesteps, c)))
# ddim_timesteps = np.asarray(list(range(0, num_ddpm_timesteps, c)))
ddim_timesteps = (np.arange(0, num_ddim_timesteps) * c).astype(int)
elif ddim_discr_method == 'quad':
ddim_timesteps = (
(
Expand All @@ -81,8 +82,8 @@ def make_ddim_timesteps(

# assert ddim_timesteps.shape[0] == num_ddim_timesteps
# add one to get the final alpha values right (the ones from first scale to data during sampling)
# steps_out = ddim_timesteps + 1
steps_out = ddim_timesteps
steps_out = ddim_timesteps + 1
# steps_out = ddim_timesteps

if verbose:
print(f'Selected timesteps for ddim sampler: {steps_out}')
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