app.py

from transformers import pipeline
from PIL import Image
import gradio as gr

model = None

if model == None:
    model = pipeline("image-to-text", model="Salesforce/blip-image-captioning-large")
    
def captioner(image):
    
    img = Image.fromarray(image)
    result = model(img)[0]['generated_text']
    return result

iface = gr.Interface(
    fn = captioner,
    inputs = gr.Image(),
    outputs = 'text'
)

iface.launch()