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Text-to-image generation using PhotoMaker and OpenVINO
======================================================
PhotoMaker is an efficient personalized text-to-image generation method,
which mainly encodes an arbitrary number of input ID images into a stack
ID embedding for preserving ID information. Such an embedding, serving
as a unified ID representation, can not only encapsulate the
characteristics of the same input ID comprehensively, but also
accommodate the characteristics of different IDs for subsequent
integration. This paves the way for more intriguing and practically
valuable applications. Users can input one or a few face photos, along
with a text prompt, to receive a customized photo or painting (no
training required!). Additionally, this model can be adapted to any base
model based on ``SDXL`` or used in conjunction with other ``LoRA``
modules.More details about PhotoMaker can be found in the `technical
report <https://arxiv.org/pdf/2312.04461.pdf>`__.
This notebook explores how to speed up PhotoMaker pipeline using
OpenVINO.
Table of contents:
^^^^^^^^^^^^^^^^^^
- `PhotoMaker pipeline
introduction <#photomaker-pipeline-introduction>`__
- `Prerequisites <#prerequisites>`__
- `Load original pipeline and prepare models for
conversion <#load-original-pipeline-and-prepare-models-for-conversion>`__
- `Convert models to OpenVINO Intermediate representation (IR)
format <#convert-models-to-openvino-intermediate-representation-ir-format>`__
- `ID Encoder <#id-encoder>`__
- `Text Encoder <#text-encoder>`__
- `U-Net <#u-net>`__
- `VAE Decoder <#vae-decoder>`__
- `Prepare Inference pipeline <#prepare-inference-pipeline>`__
- `Select inference device for Stable Diffusion
pipeline <#select-inference-device-for-stable-diffusion-pipeline>`__
- `Compile models and create their Wrappers for
inference <#compile-models-and-create-their-wrappers-for-inference>`__
- `Running Text-to-Image Generation with
OpenVINO <#running-text-to-image-generation-with-openvino>`__
- `Interactive Demo <#interactive-demo>`__
PhotoMaker pipeline introduction
--------------------------------
For the proposed PhotoMaker, we first obtain the text embedding and
image embeddings from ``text encoder(s)`` and ``image(ID) encoder``,
respectively. Then, we extract the fused embedding by merging the
corresponding class embedding (e.g., man and woman) and each image
embedding. Next, we concatenate all fused embeddings along the length
dimension to form the stacked ID embedding. Finally, we feed the stacked
ID embedding to all cross-attention layers for adaptively merging the ID
content in the ``diffusion model``. Note that although we use images of
the same ID with the masked background during training, we can directly
input images of different IDs without background distortion to create a
new ID during inference.
Prerequisites
-------------
Clone PhotoMaker repository
.. code:: ipython3
from pathlib import Path
if not Path("PhotoMaker").exists():
!git clone https://github.com/TencentARC/PhotoMaker.git
.. parsed-literal::
Cloning into 'PhotoMaker'...
remote: Enumerating objects: 236, done.
remote: Counting objects: 100% (143/143), done.
remote: Compressing objects: 100% (96/96), done.
remote: Total 236 (delta 113), reused 64 (delta 47), pack-reused 93
Receiving objects: 100% (236/236), 9.31 MiB | 25.70 MiB/s, done.
Resolving deltas: 100% (120/120), done.
Install required packages
.. code:: ipython3
%pip install -q --extra-index-url https://download.pytorch.org/whl/cpu\
transformers "torch>=2.1" "diffusers>=0.26" "gradio>=4.19" "openvino>=2024.0.0" torchvision "peft==0.6.2" "nncf>=2.9.0"
.. parsed-literal::
Note: you may need to restart the kernel to use updated packages.
Prepare PyTorch models
.. code:: ipython3
adapter_id = "TencentARC/PhotoMaker"
base_model_id = "SG161222/RealVisXL_V3.0"
TEXT_ENCODER_OV_PATH = Path("model/text_encoder.xml")
TEXT_ENCODER_2_OV_PATH = Path("model/text_encoder_2.xml")
UNET_OV_PATH = Path("model/unet.xml")
ID_ENCODER_OV_PATH = Path("model/id_encoder.xml")
VAE_DECODER_OV_PATH = Path("model/vae_decoder.xml")
Load original pipeline and prepare models for conversion
--------------------------------------------------------
For exporting each PyTorch model, we will download the ``ID encoder``
weight, ``LoRa`` weight from HuggingFace hub, then using the
``PhotoMakerStableDiffusionXLPipeline`` object from repository of
PhotoMaker to generate the original PhotoMaker pipeline.
.. code:: ipython3
import torch
import numpy as np
import os
from PIL import Image
from pathlib import Path
from PhotoMaker.photomaker.model import PhotoMakerIDEncoder
from PhotoMaker.photomaker.pipeline import PhotoMakerStableDiffusionXLPipeline
from diffusers import EulerDiscreteScheduler
import gc
trigger_word = "img"
def load_original_pytorch_pipeline_components(photomaker_path: str, base_model_id: str):
# Load base model
pipe = PhotoMakerStableDiffusionXLPipeline.from_pretrained(base_model_id, use_safetensors=True).to("cpu")
# Load PhotoMaker checkpoint
pipe.load_photomaker_adapter(
os.path.dirname(photomaker_path),
subfolder="",
weight_name=os.path.basename(photomaker_path),
trigger_word=trigger_word,
)
pipe.scheduler = EulerDiscreteScheduler.from_config(pipe.scheduler.config)
pipe.fuse_lora()
gc.collect()
return pipe
.. parsed-literal::
2024-06-06 01:04:44.222965: I tensorflow/core/util/port.cc:110] oneDNN custom operations are on. You may see slightly different numerical results due to floating-point round-off errors from different computation orders. To turn them off, set the environment variable `TF_ENABLE_ONEDNN_OPTS=0`.
2024-06-06 01:04:44.256910: I tensorflow/core/platform/cpu_feature_guard.cc:182] This TensorFlow binary is optimized to use available CPU instructions in performance-critical operations.
To enable the following instructions: AVX2 AVX512F AVX512_VNNI FMA, in other operations, rebuild TensorFlow with the appropriate compiler flags.
2024-06-06 01:04:44.912971: W tensorflow/compiler/tf2tensorrt/utils/py_utils.cc:38] TF-TRT Warning: Could not find TensorRT
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/transformers/transformer_2d.py:34: FutureWarning: `Transformer2DModelOutput` is deprecated and will be removed in version 1.0.0. Importing `Transformer2DModelOutput` from `diffusers.models.transformer_2d` is deprecated and this will be removed in a future version. Please use `from diffusers.models.modeling_outputs import Transformer2DModelOutput`, instead.
deprecate("Transformer2DModelOutput", "1.0.0", deprecation_message)
.. code:: ipython3
from huggingface_hub import hf_hub_download
photomaker_path = hf_hub_download(repo_id=adapter_id, filename="photomaker-v1.bin", repo_type="model")
pipe = load_original_pytorch_pipeline_components(photomaker_path, base_model_id)
.. parsed-literal::
Loading pipeline components...: 0%| | 0/7 [00:00<?, ?it/s]
.. parsed-literal::
Loading PhotoMaker components [1] id_encoder from [/opt/home/k8sworker/.cache/huggingface/hub/models--TencentARC--PhotoMaker/snapshots/d7ec3fc17290263135825194aeb3bc456da67cc5]...
Loading PhotoMaker components [2] lora_weights from [/opt/home/k8sworker/.cache/huggingface/hub/models--TencentARC--PhotoMaker/snapshots/d7ec3fc17290263135825194aeb3bc456da67cc5]
Convert models to OpenVINO Intermediate representation (IR) format
------------------------------------------------------------------
Starting from 2023.0 release, OpenVINO supports PyTorch models
conversion directly. We need to provide a model object, input data for
model tracing to ``ov.convert_model`` function to obtain OpenVINO
``ov.Model`` object instance. Model can be saved on disk for next
deployment using ``ov.save_model`` function.
The pipeline consists of five important parts:
- ID Encoder for generating image embeddings to condition by image
annotation.
- Text Encoders for creating text embeddings to generate an image from
a text prompt.
- Unet for step-by-step denoising latent image representation.
- Autoencoder (VAE) for decoding latent space to image.
For reducing memory consumption, weights compression optimization can be
applied using `NNCF <https://github.com/openvinotoolkit/nncf>`__. Weight
compression aims to reduce the memory footprint of models, which require
extensive memory to store the weights during inference, can benefit from
weight compression in the following ways:
- enabling the inference of exceptionally large models that cannot be
accommodated in the memory of the device;
- improving the inference performance of the models by reducing the
latency of the memory access when computing the operations with
weights, for example, Linear layers.
`Neural Network Compression Framework
(NNCF) <https://github.com/openvinotoolkit/nncf>`__ provides 4-bit /
8-bit mixed weight quantization as a compression method. The main
difference between weights compression and full model quantization
(post-training quantization) is that activations remain floating-point
in the case of weights compression which leads to a better accuracy.
``nncf.compress_weights`` function can be used for performing weights
compression. The function accepts an OpenVINO model and other
compression parameters.
More details about weights compression can be found in `OpenVINO
documentation <https://docs.openvino.ai/2023.3/weight_compression.html>`__.
.. code:: ipython3
import openvino as ov
import nncf
def flattenize_inputs(inputs):
"""
Helper function for resolve nested input structure (e.g. lists or tuples of tensors)
"""
flatten_inputs = []
for input_data in inputs:
if input_data is None:
continue
if isinstance(input_data, (list, tuple)):
flatten_inputs.extend(flattenize_inputs(input_data))
else:
flatten_inputs.append(input_data)
return flatten_inputs
dtype_mapping = {
torch.float32: ov.Type.f32,
torch.float64: ov.Type.f64,
torch.int32: ov.Type.i32,
torch.int64: ov.Type.i64,
torch.bool: ov.Type.boolean,
}
def prepare_input_info(input_dict):
"""
Helper function for preparing input info (shapes and data types) for conversion based on example inputs
"""
flatten_inputs = flattenize_inputs(input_dict.values())
input_info = []
for input_data in flatten_inputs:
updated_shape = list(input_data.shape)
if input_data.ndim == 5:
updated_shape[1] = -1
input_info.append((dtype_mapping[input_data.dtype], updated_shape))
return input_info
def convert(model: torch.nn.Module, xml_path: str, example_input, input_info):
"""
Helper function for converting PyTorch model to OpenVINO IR
"""
xml_path = Path(xml_path)
if not xml_path.exists():
xml_path.parent.mkdir(parents=True, exist_ok=True)
with torch.no_grad():
ov_model = ov.convert_model(model, example_input=example_input, input=input_info)
ov_model = nncf.compress_weights(ov_model)
ov.save_model(ov_model, xml_path)
del ov_model
torch._C._jit_clear_class_registry()
torch.jit._recursive.concrete_type_store = torch.jit._recursive.ConcreteTypeStore()
torch.jit._state._clear_class_state()
.. parsed-literal::
INFO:nncf:NNCF initialized successfully. Supported frameworks detected: torch, tensorflow, onnx, openvino
ID Encoder
~~~~~~~~~~
PhotoMaker merged image encoder and fuse module to create an ID Encoder.
It will used to generate image embeddings to update text encoder’s
output(text embeddings) which will be the input for U-Net model.
.. code:: ipython3
id_encoder = pipe.id_encoder
id_encoder.eval()
def create_bool_tensor(*size):
new_tensor = torch.zeros((size), dtype=torch.bool)
return new_tensor
inputs = {
"id_pixel_values": torch.randn((1, 1, 3, 224, 224)),
"prompt_embeds": torch.randn((1, 77, 2048)),
"class_tokens_mask": create_bool_tensor(1, 77),
}
input_info = prepare_input_info(inputs)
convert(id_encoder, ID_ENCODER_OV_PATH, inputs, input_info)
del id_encoder
gc.collect()
.. parsed-literal::
WARNING:tensorflow:Please fix your imports. Module tensorflow.python.training.tracking.base has been moved to tensorflow.python.trackable.base. The old module will be deleted in version 2.11.
.. parsed-literal::
[ WARNING ] Please fix your imports. Module %s has been moved to %s. The old module will be deleted in version %s.
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/modeling_utils.py:4481: FutureWarning: `_is_quantized_training_enabled` is going to be deprecated in transformers 4.39.0. Please use `model.hf_quantizer.is_trainable` instead
warnings.warn(
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/models/clip/modeling_clip.py:276: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len):
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/models/clip/modeling_clip.py:316: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim):
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/notebooks/photo-maker/PhotoMaker/photomaker/model.py:84: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
assert class_tokens_mask.sum() == stacked_id_embeds.shape[0], f"{class_tokens_mask.sum()} != {stacked_id_embeds.shape[0]}"
.. parsed-literal::
INFO:nncf:Statistics of the bitwidth distribution:
┍━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┑
│ Num bits (N) │ % all parameters (layers) │ % ratio-defining parameters (layers) │
┝━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
│ 8 │ 100% (151 / 151) │ 100% (151 / 151) │
┕━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┙
.. parsed-literal::
Output()
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"></pre>
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
</pre>
.. parsed-literal::
19039
Text Encoder
~~~~~~~~~~~~
The text-encoder is responsible for transforming the input prompt, for
example, “a photo of an astronaut riding a horse” into an embedding
space that can be understood by the U-Net. It is usually a simple
transformer-based encoder that maps a sequence of input tokens to a
sequence of latent text embeddings.
.. code:: ipython3
text_encoder = pipe.text_encoder
text_encoder.eval()
text_encoder_2 = pipe.text_encoder_2
text_encoder_2.eval()
text_encoder.config.output_hidden_states = True
text_encoder.config.return_dict = False
text_encoder_2.config.output_hidden_states = True
text_encoder_2.config.return_dict = False
inputs = {"input_ids": torch.ones((1, 77), dtype=torch.long)}
input_info = prepare_input_info(inputs)
convert(text_encoder, TEXT_ENCODER_OV_PATH, inputs, input_info)
convert(text_encoder_2, TEXT_ENCODER_2_OV_PATH, inputs, input_info)
del text_encoder
del text_encoder_2
gc.collect()
.. parsed-literal::
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/modeling_attn_mask_utils.py:86: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if input_shape[-1] > 1 or self.sliding_window is not None:
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/modeling_attn_mask_utils.py:162: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if past_key_values_length > 0:
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/transformers/models/clip/modeling_clip.py:284: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if causal_attention_mask.size() != (bsz, 1, tgt_len, src_len):
.. parsed-literal::
INFO:nncf:Statistics of the bitwidth distribution:
┍━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┑
│ Num bits (N) │ % all parameters (layers) │ % ratio-defining parameters (layers) │
┝━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
│ 8 │ 100% (74 / 74) │ 100% (74 / 74) │
┕━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┙
.. parsed-literal::
Output()
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"></pre>
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
</pre>
.. parsed-literal::
INFO:nncf:Statistics of the bitwidth distribution:
┍━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┑
│ Num bits (N) │ % all parameters (layers) │ % ratio-defining parameters (layers) │
┝━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
│ 8 │ 100% (195 / 195) │ 100% (195 / 195) │
┕━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┙
.. parsed-literal::
Output()
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"></pre>
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
</pre>
.. parsed-literal::
38600
U-Net
~~~~~
The process of U-Net model conversion remains the same, like for
original Stable Diffusion XL model.
.. code:: ipython3
unet = pipe.unet
unet.eval()
class UnetWrapper(torch.nn.Module):
def __init__(self, unet):
super().__init__()
self.unet = unet
def forward(
self,
sample=None,
timestep=None,
encoder_hidden_states=None,
text_embeds=None,
time_ids=None,
):
return self.unet.forward(
sample,
timestep,
encoder_hidden_states,
added_cond_kwargs={"text_embeds": text_embeds, "time_ids": time_ids},
)
inputs = {
"sample": torch.rand([2, 4, 128, 128], dtype=torch.float32),
"timestep": torch.from_numpy(np.array(1, dtype=float)),
"encoder_hidden_states": torch.rand([2, 77, 2048], dtype=torch.float32),
"text_embeds": torch.rand([2, 1280], dtype=torch.float32),
"time_ids": torch.rand([2, 6], dtype=torch.float32),
}
input_info = prepare_input_info(inputs)
w_unet = UnetWrapper(unet)
convert(w_unet, UNET_OV_PATH, inputs, input_info)
del w_unet, unet
gc.collect()
.. parsed-literal::
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/unets/unet_2d_condition.py:1114: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if dim % default_overall_up_factor != 0:
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/downsampling.py:136: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
assert hidden_states.shape[1] == self.channels
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/downsampling.py:145: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
assert hidden_states.shape[1] == self.channels
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/upsampling.py:146: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
assert hidden_states.shape[1] == self.channels
/opt/home/k8sworker/ci-ai/cibuilds/ov-notebook/OVNotebookOps-697/.workspace/scm/ov-notebook/.venv/lib/python3.8/site-packages/diffusers/models/upsampling.py:162: TracerWarning: Converting a tensor to a Python boolean might cause the trace to be incorrect. We can't record the data flow of Python values, so this value will be treated as a constant in the future. This means that the trace might not generalize to other inputs!
if hidden_states.shape[0] >= 64:
.. parsed-literal::
INFO:nncf:Statistics of the bitwidth distribution:
┍━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┑
│ Num bits (N) │ % all parameters (layers) │ % ratio-defining parameters (layers) │
┝━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
│ 8 │ 100% (794 / 794) │ 100% (794 / 794) │
┕━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┙
.. parsed-literal::
Output()
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"></pre>
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
</pre>
.. parsed-literal::
112933
VAE Decoder
~~~~~~~~~~~
The VAE model has two parts, an encoder and a decoder. The encoder is
used to convert the image into a low dimensional latent representation,
which will serve as the input to the U-Net model. The decoder,
conversely, transforms the latent representation back into an image.
When running Text-to-Image pipeline, we will see that we only need the
VAE decoder.
.. code:: ipython3
vae_decoder = pipe.vae
vae_decoder.eval()
class VAEDecoderWrapper(torch.nn.Module):
def __init__(self, vae_decoder):
super().__init__()
self.vae = vae_decoder
def forward(self, latents):
return self.vae.decode(latents)
w_vae_decoder = VAEDecoderWrapper(vae_decoder)
inputs = torch.zeros((1, 4, 128, 128))
convert(w_vae_decoder, VAE_DECODER_OV_PATH, inputs, input_info=[1, 4, 128, 128])
del w_vae_decoder, vae_decoder
gc.collect()
.. parsed-literal::
INFO:nncf:Statistics of the bitwidth distribution:
┍━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┑
│ Num bits (N) │ % all parameters (layers) │ % ratio-defining parameters (layers) │
┝━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┿━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┥
│ 8 │ 100% (40 / 40) │ 100% (40 / 40) │
┕━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┙
.. parsed-literal::
Output()
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"></pre>
.. raw:: html
<pre style="white-space:pre;overflow-x:auto;line-height:normal;font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
</pre>
.. parsed-literal::
6285
Prepare Inference pipeline
--------------------------
In this example, we will reuse ``PhotoMakerStableDiffusionXLPipeline``
pipeline to generate the image with OpenVINO, so each model’s object in
this pipeline should be replaced with new OpenVINO model object.
Select inference device for Stable Diffusion pipeline
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code:: ipython3
import ipywidgets as widgets
core = ov.Core()
device = widgets.Dropdown(
options=core.available_devices + ["AUTO"],
value="CPU",
description="Device:",
disabled=False,
)
device
.. parsed-literal::
Dropdown(description='Device:', options=('CPU', 'AUTO'), value='CPU')
Compile models and create their Wrappers for inference
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To access original PhotoMaker workflow, we have to create a new wrapper
for each OpenVINO compiled model. For matching original pipeline, part
of OpenVINO model wrapper’s attributes should be reused from original
model objects and inference output must be converted from numpy to
``torch.tensor``.
.. code:: ipython3
compiled_id_encoder = core.compile_model(ID_ENCODER_OV_PATH, device.value)
compiled_unet = core.compile_model(UNET_OV_PATH, device.value)
compiled_text_encoder = core.compile_model(TEXT_ENCODER_OV_PATH, device.value)
compiled_text_encoder_2 = core.compile_model(TEXT_ENCODER_2_OV_PATH, device.value)
compiled_vae_decoder = core.compile_model(VAE_DECODER_OV_PATH, device.value)
.. code:: ipython3
from collections import namedtuple
class OVIDEncoderWrapper(PhotoMakerIDEncoder):
dtype = torch.float32 # accessed in the original workflow
def __init__(self, id_encoder, orig_id_encoder):
super().__init__()
self.id_encoder = id_encoder
self.modules = orig_id_encoder.modules # accessed in the original workflow
self.config = orig_id_encoder.config # accessed in the original workflow
def __call__(
self,
*args,
):
id_pixel_values, prompt_embeds, class_tokens_mask = args
inputs = {
"id_pixel_values": id_pixel_values,
"prompt_embeds": prompt_embeds,
"class_tokens_mask": class_tokens_mask,
}
output = self.id_encoder(inputs)[0]
return torch.from_numpy(output)
.. code:: ipython3
class OVTextEncoderWrapper:
dtype = torch.float32 # accessed in the original workflow
def __init__(self, text_encoder, orig_text_encoder):
self.text_encoder = text_encoder
self.modules = orig_text_encoder.modules # accessed in the original workflow
self.config = orig_text_encoder.config # accessed in the original workflow
def __call__(self, input_ids, **kwargs):
inputs = {"input_ids": input_ids}
output = self.text_encoder(inputs)
hidden_states = []
hidden_states_len = len(output)
for i in range(1, hidden_states_len):
hidden_states.append(torch.from_numpy(output[i]))
BaseModelOutputWithPooling = namedtuple("BaseModelOutputWithPooling", "last_hidden_state hidden_states")
output = BaseModelOutputWithPooling(torch.from_numpy(output[0]), hidden_states)
return output
.. code:: ipython3
class OVUnetWrapper:
def __init__(self, unet, unet_orig):
self.unet = unet
self.config = unet_orig.config # accessed in the original workflow
self.add_embedding = unet_orig.add_embedding # accessed in the original workflow
def __call__(self, *args, **kwargs):
latent_model_input, t = args
inputs = {
"sample": latent_model_input,
"timestep": t,
"encoder_hidden_states": kwargs["encoder_hidden_states"],
"text_embeds": kwargs["added_cond_kwargs"]["text_embeds"],
"time_ids": kwargs["added_cond_kwargs"]["time_ids"],
}
output = self.unet(inputs)
return [torch.from_numpy(output[0])]
.. code:: ipython3
class OVVAEDecoderWrapper:
dtype = torch.float32 # accessed in the original workflow
def __init__(self, vae, vae_orig):
self.vae = vae
self.config = vae_orig.config # accessed in the original workflow
def decode(self, latents, return_dict=False):
output = self.vae(latents)[0]
output = torch.from_numpy(output)
return [output]
Replace the PyTorch model objects in original pipeline with OpenVINO
models
.. code:: ipython3
pipe.id_encoder = OVIDEncoderWrapper(compiled_id_encoder, pipe.id_encoder)
pipe.unet = OVUnetWrapper(compiled_unet, pipe.unet)
pipe.text_encoder = OVTextEncoderWrapper(compiled_text_encoder, pipe.text_encoder)
pipe.text_encoder_2 = OVTextEncoderWrapper(compiled_text_encoder_2, pipe.text_encoder_2)
pipe.vae = OVVAEDecoderWrapper(compiled_vae_decoder, pipe.vae)
Running Text-to-Image Generation with OpenVINO
----------------------------------------------
.. code:: ipython3
from diffusers.utils import load_image
prompt = "sci-fi, closeup portrait photo of a man img in Iron man suit, face"
negative_prompt = "(asymmetry, worst quality, low quality, illustration, 3d, 2d, painting, cartoons, sketch), open mouth"
generator = torch.Generator("cpu").manual_seed(42)
input_id_images = []
original_image = load_image("./PhotoMaker/examples/newton_man/newton_0.jpg")
input_id_images.append(original_image)
## Parameter setting
num_steps = 20
style_strength_ratio = 20
start_merge_step = int(float(style_strength_ratio) / 100 * num_steps)
if start_merge_step > 30:
start_merge_step = 30
images = pipe(
prompt=prompt,
input_id_images=input_id_images,
negative_prompt=negative_prompt,
num_images_per_prompt=1,
num_inference_steps=num_steps,
start_merge_step=start_merge_step,
generator=generator,
).images
.. parsed-literal::
0%| | 0/20 [00:00<?, ?it/s]
.. code:: ipython3
import matplotlib.pyplot as plt
def visualize_results(orig_img: Image.Image, output_img: Image.Image):
"""
Helper function for pose estimationresults visualization
Parameters:
orig_img (Image.Image): original image
output_img (Image.Image): processed image with PhotoMaker
Returns:
fig (matplotlib.pyplot.Figure): matplotlib generated figure
"""
orig_img = orig_img.resize(output_img.size)
orig_title = "Original image"
output_title = "Output image"
im_w, im_h = orig_img.size
is_horizontal = im_h < im_w
fig, axs = plt.subplots(
2 if is_horizontal else 1,
1 if is_horizontal else 2,
sharex="all",
sharey="all",
)
fig.suptitle(f"Prompt: '{prompt}'", fontweight="bold")
fig.patch.set_facecolor("white")
list_axes = list(axs.flat)
for a in list_axes:
a.set_xticklabels([])
a.set_yticklabels([])
a.get_xaxis().set_visible(False)
a.get_yaxis().set_visible(False)
a.grid(False)
list_axes[0].imshow(np.array(orig_img))
list_axes[1].imshow(np.array(output_img))
list_axes[0].set_title(orig_title, fontsize=15)
list_axes[1].set_title(output_title, fontsize=15)
fig.subplots_adjust(wspace=0.01 if is_horizontal else 0.00, hspace=0.01 if is_horizontal else 0.1)
fig.tight_layout()
return fig
fig = visualize_results(original_image, images[0])
.. image:: photo-maker-with-output_files/photo-maker-with-output_33_0.png
Interactive Demo
----------------
.. code:: ipython3
import gradio as gr
def generate_from_text(text_promt, input_image, neg_prompt, seed, num_steps, style_strength_ratio):
"""
Helper function for generating result image from prompt text
Parameters:
text_promt (String): positive prompt
input_image (Image.Image): original image
neg_prompt (String): negative prompt
seed (Int): seed for random generator state initialization
num_steps (Int): number of sampling steps
style_strength_ratio (Int): the percentage of step when merging the ID embedding to text embedding
Returns:
result (Image.Image): generation result
"""
start_merge_step = int(float(style_strength_ratio) / 100 * num_steps)
if start_merge_step > 30:
start_merge_step = 30
result = pipe(
text_promt,
input_id_images=input_image,
negative_prompt=neg_prompt,
num_inference_steps=num_steps,
num_images_per_prompt=1,
start_merge_step=start_merge_step,
generator=torch.Generator().manual_seed(seed),
height=1024,
width=1024,
).images[0]
return result
with gr.Blocks() as demo:
with gr.Column():
with gr.Row():
input_image = gr.Image(label="Your image", sources=["upload"], type="pil")
output_image = gr.Image(label="Generated Images", type="pil")
positive_input = gr.Textbox(label=f"Text prompt, Trigger words is '{trigger_word}'")
neg_input = gr.Textbox(label="Negative prompt")
with gr.Row():
seed_input = gr.Slider(0, 10_000_000, value=42, label="Seed")
steps_input = gr.Slider(label="Steps", value=10, minimum=5, maximum=50, step=1)
style_strength_ratio_input = gr.Slider(label="Style strength ratio", value=20, minimum=5, maximum=100, step=5)
btn = gr.Button()
btn.click(
generate_from_text,
[
positive_input,
input_image,
neg_input,
seed_input,
steps_input,
style_strength_ratio_input,
],
output_image,
)
gr.Examples(
[
[prompt, negative_prompt],
[
"A woman img wearing a Christmas hat",
negative_prompt,
],
[
"A man img in a helmet and vest riding a motorcycle",
negative_prompt,
],
[
"photo of a middle-aged man img sitting on a plush leather couch, and watching television show",
negative_prompt,
],
[
"photo of a skilled doctor img in a pristine white lab coat enjoying a delicious meal in a sophisticated dining room",
negative_prompt,
],
[
"photo of superman img flying through a vibrant sunset sky, with his cape billowing in the wind",
negative_prompt,
],
],
[positive_input, neg_input],
)
demo.queue().launch()
# if you are launching remotely, specify server_name and server_port
# demo.launch(server_name='your server name', server_port='server port in int')
# Read more in the docs: https://gradio.app/docs/
.. parsed-literal::
Running on local URL: http://127.0.0.1:7860
To create a public link, set `share=True` in `launch()`.
.. code:: ipython3
demo.close()
.. parsed-literal::
Closing server running on port: 7860
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