| import torch |
|
|
|
|
| def apply_controlnet_advanced( |
| unet, |
| controlnet, |
| image_bchw, |
| strength, |
| start_percent, |
| end_percent, |
| positive_advanced_weighting=None, |
| negative_advanced_weighting=None, |
| advanced_frame_weighting=None, |
| advanced_sigma_weighting=None, |
| advanced_mask_weighting=None |
| ): |
| """ |
| |
| # positive_advanced_weighting or negative_advanced_weighting |
| |
| Unet has input, middle, output blocks, and we can give different weights to each layers in all blocks. |
| Below is an example for stronger control in middle block. |
| This is helpful for some high-res fix passes. |
| |
| positive_advanced_weighting = { |
| 'input': [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2], |
| 'middle': [1.0], |
| 'output': [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2] |
| } |
| negative_advanced_weighting = { |
| 'input': [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2], |
| 'middle': [1.0], |
| 'output': [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2] |
| } |
| |
| # advanced_frame_weighting |
| |
| The advanced_frame_weighting is a weight applied to each image in a batch. |
| The length of this list must be same with batch size |
| For example, if batch size is 5, you can use advanced_frame_weighting = [0, 0.25, 0.5, 0.75, 1.0] |
| If you view the 5 images as 5 frames in a video, this will lead to progressively stronger control over time. |
| |
| # advanced_sigma_weighting |
| |
| The advanced_sigma_weighting allows you to dynamically compute control |
| weights given diffusion timestep (sigma). |
| For example below code can softly make beginning steps stronger than ending steps. |
| |
| sigma_max = unet.model.model_sampling.sigma_max |
| sigma_min = unet.model.model_sampling.sigma_min |
| advanced_sigma_weighting = lambda s: (s - sigma_min) / (sigma_max - sigma_min) |
| |
| # advanced_mask_weighting |
| |
| A mask can be applied to control signals. |
| This should be a tensor with shape B 1 H W where the H and W can be arbitrary. |
| This mask will be resized automatically to match the shape of all injection layers. |
| |
| """ |
|
|
| cnet = controlnet.copy().set_cond_hint(image_bchw, strength, (start_percent, end_percent)) |
| cnet.positive_advanced_weighting = positive_advanced_weighting |
| cnet.negative_advanced_weighting = negative_advanced_weighting |
| cnet.advanced_frame_weighting = advanced_frame_weighting |
| cnet.advanced_sigma_weighting = advanced_sigma_weighting |
| if advanced_mask_weighting is not None: |
| assert isinstance(advanced_mask_weighting, torch.Tensor) |
| B, C, H, W = advanced_mask_weighting.shape |
| assert B > 0 and C == 1 and H > 0 and W > 0 |
| cnet.advanced_mask_weighting = advanced_mask_weighting |
| m = unet.clone() |
| m.add_patched_controlnet(cnet) |
| return m |
|
|
|
|
