import streamlit as st from text2image import get_model, get_tokenizer, get_image_transform from utils import text_encoder, image_encoder from PIL import Image from jax import numpy as jnp import pandas as pd import requests import jax def app(): st.title("From Image to Text") st.markdown( """ ### 👋 Ciao! Here you can find the captions or the labels that are most related to a given image. It is a zero-shot image classification task! 🤌 Italian mode on! 🤌 For example, try to write "cat" in the space for label1 and "dog" in the space for label2 and the run "classify"! """ ) image_url = st.text_input( "You can input the URL of an image", value="https://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Domestic_Cat_Face_Shot.jpg/1280px-Domestic_Cat_Face_Shot.jpg", ) MAX_CAP = 4 col1, col2 = st.beta_columns([3, 1]) with col2: captions_count = st.selectbox( "Number of labels", options=range(1, MAX_CAP + 1), index=1 ) compute = st.button("Classify") with col1: captions = list() for idx in range(min(MAX_CAP, captions_count)): captions.append(st.text_input(f"Insert label {idx+1}")) if compute: captions = [c for c in captions if c != ""] if not captions or not image_url: st.error("Please choose one image and at least one label") else: with st.spinner("Computing..."): model = get_model() tokenizer = get_tokenizer() text_embeds = list() for i, c in enumerate(captions): text_embeds.extend(text_encoder(c, model, tokenizer)) text_embeds = jnp.array(text_embeds) image_raw = requests.get(image_url, stream=True).raw image = Image.open(image_raw).convert("RGB") transform = get_image_transform(model.config.vision_config.image_size) image_embed = image_encoder(transform(image), model) # we could have a softmax here cos_similarities = jax.nn.softmax(jnp.matmul(image_embed, text_embeds.T)) chart_data = pd.Series(cos_similarities[0], index=captions) col1, col2 = st.beta_columns(2) with col1: st.bar_chart(chart_data) with col2: st.image(image)