import gradio as gr
from transformers import AutoProcessor, AutoModelForCausalLM
from PIL import Image
import torch

# 加载模型和处理器
model_name = "microsoft/llava-med-v1.5-mistral-7b"
model = AutoModelForCausalLM.from_pretrained(model_name, torch_dtype=torch.float16, device_map="auto")
processor = AutoProcessor.from_pretrained(model_name)

def predict(image, question):
    # 将图像和问题处理为模型输入格式
    inputs = processor(images=image, text=question, return_tensors="pt").to("cuda")

    # 生成答案
    with torch.no_grad():
        outputs = model.generate(**inputs)

    # 解码输出
    answer = processor.batch_decode(outputs, skip_special_tokens=True)[0]
    return answer

# 创建 Gradio 界面
interface = gr.Interface(
    fn=predict,
    inputs=[gr.inputs.Image(type="pil"), gr.inputs.Textbox(label="Question")],
    outputs="text",
    title="Medical Visual Question Answering"
)

if __name__ == "__main__":
    interface.launch()