app.py

# Workaround to install the lib without "setup.py"
import sys
from git import Repo
Repo.clone_from("https://github.com/dimitreOliveira/hub.git", "./hub")
sys.path.append("/hub")

import gradio as gr
import tensorflow as tf
from hub.tensorflow_hub.hf_utils import pull_from_hub

import requests
# Download human-readable labels for ImageNet.
response = requests.get("https://storage.googleapis.com/download.tensorflow.org/data/ImageNetLabels.txt")
labels = [x for x in response.text.split("\n") if x != ""]

model = pull_from_hub(repo_id="Dimitre/mobilenet_v3_small")

def preprocess(image):
    image = image.reshape((-1, 224, 224, 3)) # (batch_size, height, width, num_channels)
    return image / 255.

def postprocess(prediction):
    return {labels[i]: float(prediction[i]) for i in range(len(labels))}

def predict_fn(image):
    image = preprocess(image)
    logits = model(image)
    probs = tf.nn.softmax(logits, axis=1)[0].numpy()
    scores = postprocess(probs)
    return scores

iface = gr.Interface(fn=predict_fn, 
                     inputs=gr.Image(shape=(224, 224)), 
                     outputs=gr.Label(num_top_classes=5))
iface.launch()