Our model performs well in aligning Chinese and English, and is the strongest open source version on the market today, retaining most of the stable diffusion capabilities of the original, and in some cases even better than the original model.

AltDiffusion model is backed by a bilingual CLIP model named AltCLIP, which is also accessible in FlagAI. You can read this tutorial for more information.

AltDiffusion now supports online demo, try out it by clicking here!

引用

关于AltCLIP，我们已经推出了相关报告，有更多细节可以查阅，如对您的工作有帮助，欢迎引用。

If you find this work helpful, please consider to cite

@article{https://doi.org/10.48550/arxiv.2211.06679,
  doi = {10.48550/ARXIV.2211.06679},
  url = {https://arxiv.org/abs/2211.06679},
  author = {Chen, Zhongzhi and Liu, Guang and Zhang, Bo-Wen and Ye, Fulong and Yang, Qinghong and Wu, Ledell},
  keywords = {Computation and Language (cs.CL), FOS: Computer and information sciences},
  title = {AltCLIP: Altering the Language Encoder in CLIP for Extended Language Capabilities},
  publisher = {arXiv},
  year = {2022},
  copyright = {arXiv.org perpetual, non-exclusive license}
}

模型权重 Model Weights

第一次运行AltDiffusion模型时会自动从这里下载如下权重,

The following weights are automatically downloaded from here when the AltDiffusion model is run for the first time:

模型名称 Model name	大小 Size	描述 Description
StableDiffusionSafetyChecker	1.13G	图片的安全检查器；Safety checker for image
AltDiffusion	8.0G	我们的双语AltDiffusion模型； Our bilingual AltDiffusion model
AltCLIP	3.22G	我们的双语AltCLIP模型；Our bilingual AltCLIP model

示例 Example

🧨Diffusers Example

AltDiffusion 已被添加到 🧨Diffusers!

我们的代码示例已放到colab上，欢迎使用。

您可以在此处查看文档页面。

以下示例将使用fast DPM 调度程序生成图像, 在V100 上耗时大约为 2 秒。

You can run our diffusers example through here in colab.

You can see the documentation page here.

The following example will use the fast DPM scheduler to generate an image in ca. 2 seconds on a V100.

First you should install diffusers main branch and some dependencies:

pip install git+https://github.com/huggingface/diffusers.git torch transformers accelerate sentencepiece

then you can run the following example:

python

from diffusers import AltDiffusionPipeline, DPMSolverMultistepScheduler
import torch

pipe = AltDiffusionPipeline.from_pretrained("BAAI/AltDiffusion", torch_dtype=torch.float16, revision="fp16")
pipe = pipe.to("cuda")

pipe.scheduler = DPMSolverMultistepScheduler.from_config(pipe.scheduler.config)

prompt = "黑暗精灵公主，非常详细，幻想，非常详细，数字绘画，概念艺术，敏锐的焦点，插图"
# or in English:
# prompt = "dark elf princess, highly detailed, d & d, fantasy, highly detailed, digital painting, trending on artstation, concept art, sharp focus, illustration, art by artgerm and greg rutkowski and fuji choko and viktoria gavrilenko and hoang lap"

image = pipe(prompt, num_inference_steps=25).images[0]
image.save("./alt.png")

Transformers Example

python

import os
import torch
import transformers
from transformers import BertPreTrainedModel
from transformers.models.clip.modeling_clip import CLIPPreTrainedModel
from transformers.models.xlm_roberta.tokenization_xlm_roberta import XLMRobertaTokenizer
from diffusers.schedulers import DDIMScheduler, LMSDiscreteScheduler, PNDMScheduler
from diffusers import StableDiffusionPipeline
from transformers import BertPreTrainedModel,BertModel,BertConfig
import torch.nn as nn
import torch
from transformers.models.xlm_roberta.configuration_xlm_roberta import XLMRobertaConfig
from transformers import XLMRobertaModel
from transformers.activations import ACT2FN
from typing import Optional


class RobertaSeriesConfig(XLMRobertaConfig):
    def __init__(self, pad_token_id=1, bos_token_id=0, eos_token_id=2,project_dim=768,pooler_fn='cls',learn_encoder=False, **kwargs):
        super().__init__(pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id, **kwargs)
        self.project_dim = project_dim
        self.pooler_fn = pooler_fn
        # self.learn_encoder = learn_encoder

class RobertaSeriesModelWithTransformation(BertPreTrainedModel):
    _keys_to_ignore_on_load_unexpected = [r"pooler"]
    _keys_to_ignore_on_load_missing = [r"position_ids", r"predictions.decoder.bias"]
    base_model_prefix = 'roberta'
    config_class= XLMRobertaConfig
    def __init__(self, config):
        super().__init__(config)
        self.roberta = XLMRobertaModel(config)
        self.transformation = nn.Linear(config.hidden_size, config.project_dim)
        self.post_init()
        
    def get_text_embeds(self,bert_embeds,clip_embeds):
        return self.merge_head(torch.cat((bert_embeds,clip_embeds)))

    def set_tokenizer(self, tokenizer):
        self.tokenizer = tokenizer

    def forward(self, input_ids: Optional[torch.Tensor] = None) :
        attention_mask = (input_ids != self.tokenizer.pad_token_id).to(torch.int64)
        outputs = self.base_model(
            input_ids=input_ids,
            attention_mask=attention_mask,
        )
        
        projection_state = self.transformation(outputs.last_hidden_state)
        
        return (projection_state,)

model_path_encoder = "BAAI/RobertaSeriesModelWithTransformation"
model_path_diffusion = "BAAI/AltDiffusion"
device = "cuda"

seed = 12345
tokenizer = XLMRobertaTokenizer.from_pretrained(model_path_encoder, use_auth_token=True)
tokenizer.model_max_length = 77

text_encoder = RobertaSeriesModelWithTransformation.from_pretrained(model_path_encoder, use_auth_token=True)
text_encoder.set_tokenizer(tokenizer)
print("text encode loaded")
pipe = StableDiffusionPipeline.from_pretrained(model_path_diffusion,
                                               tokenizer=tokenizer,
                                               text_encoder=text_encoder,
                                               use_auth_token=True,
                                               )
print("diffusion pipeline loaded")
pipe = pipe.to(device)

prompt = "Thirty years old lee evans as a sad 19th century postman. detailed, soft focus, candle light, interesting lights, realistic, oil canvas, character concept art by munkácsy mihály, csók istván, john everett millais, henry meynell rheam, and da vinci"
with torch.no_grad():
    image = pipe(prompt, guidance_scale=7.5).images[0]  
    
image.save("3.png")

您可以在predict_generate_images函数里通过改变参数来调整设置，具体信息如下:

More parameters of predict_generate_images for you to adjust for predict_generate_images are listed below:

参数名 Parameter	类型 Type	描述 Description
prompt	str	提示文本; The prompt text
out_path	str	输出路径; The output path to save images
n_samples	int	输出图片数量; Number of images to be generate
skip_grid	bool	如果为True, 会将所有图片拼接在一起，输出一张新的图片; If set to true, image gridding step will be skipped
ddim_step	int	DDIM模型的步数; Number of steps in ddim model
plms	bool	如果为True, 则会使用plms模型; If set to true, PLMS Sampler instead of DDIM Sampler will be applied
scale	float	这个值决定了文本在多大程度上影响生成的图片，值越大影响力越强; This value determines how important the prompt incluences generate images
H	int	图片的高度; Height of image
W	int	图片的宽度; Width of image
C	int	图片的channel数; Numeber of channels of generated images
seed	int	随机种子; Random seed number

注意：模型推理要求一张至少10G以上的GPU。

Note that the model inference requires a GPU of at least 10G above.

模型参数量/Number of Model Parameters

模块名称 Module Name	参数量 Number of Parameters
AutoEncoder	83.7M
Unet	865M
AltCLIP TextEncoder	859M

引用/Citation

Please cite our paper if you find it helpful :)

@misc{ye2023altdiffusion,
      title={AltDiffusion: A Multilingual Text-to-Image Diffusion Model}, 
      author={Fulong Ye and Guang Liu and Xinya Wu and Ledell Wu},
      year={2023},
      eprint={2308.09991},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}

许可/License

该模型通过 CreativeML Open RAIL-M license 获得许可。作者对您生成的输出不主张任何权利，您可以自由使用它们并对它们的使用负责，不得违反本许可中的规定。该许可证禁止您分享任何违反任何法律、对他人造成伤害、传播任何可能造成伤害的个人信息、传播错误信息和针对弱势群体的任何内容。您可以出于商业目的修改和使用模型，但必须包含相同使用限制的副本。有关限制的完整列表，请阅读许可证。

The model is licensed with a CreativeML Open RAIL-M license. The authors claim no rights on the outputs you generate, you are free to use them and are accountable for their use which must not go against the provisions set in this license. The license forbids you from sharing any content that violates any laws, produce any harm to a person, disseminate any personal information that would be meant for harm, spread misinformation and target vulnerable groups. You can modify and use the model for commercial purposes, but a copy of the same use restrictions must be included. For the full list of restrictions please read the license .

BAAI/
AltDiffusion

AltDiffusion

Gradio

模型信息 Model Information

引用

模型权重 Model Weights

示例 Example

🧨Diffusers Example

Transformers Example

更多生成结果 More Results

中英文对齐能力 Chinese and English alignment ability

prompt:dark elf princess, highly detailed, d & d, fantasy, highly detailed, digital painting, trending on artstation, concept art, sharp focus, illustration, art by artgerm and greg rutkowski and fuji choko and viktoria gavrilenko and hoang lap

英文生成结果/Generated results from English prompts

prompt:黑暗精灵公主，非常详细，幻想，非常详细，数字绘画，概念艺术，敏锐的焦点，插图

中文生成结果/Generated results from Chinese prompts

中文表现能力/The performance for Chinese prompts

prompt:带墨镜的男孩肖像，充满细节，8K高清

prompt:带墨镜的中国男孩肖像，充满细节，8K高清

长图生成能力/The ability to generate long images

prompt: 一只带着帽子的小狗

原版 stable diffusion：

Ours:

模型参数量/Number of Model Parameters

引用/Citation

许可/License