src/streamlit_app.py

import streamlit as st
from tensorflow.keras.models import load_model
from PIL import Image
import numpy as np

#Loading the model
model = load_model('src/traffic.h5') 

#Process the image
def process_image(img):
    img = img.resize((30, 30))
    img = np.array(img)
    img = img / 255.0
    img = np.expand_dims(img, axis=0)
    return img

#Title and description
st.title(':vertical_traffic_light: German Traffic Sign Recognition')
st.write('Upload an image and the model will detect the traffic sign.')

#Class names for prediction
class_names = {0:'Speed limit (20km/h)',1:'Speed limit (30km/h)', 2:'Speed limit (50km/h)', 3:'Speed limit (60km/h)', 
           4:'Speed limit (70km/h)', 5:'Speed limit (80km/h)', 6:'End of speed limit (80km/h)', 
           7:'Speed limit (100km/h)', 8:'Speed limit (120km/h)', 9:'No passing', 
           10:'No passing veh over 3.5 tons', 11:'Right-of-way at intersection', 12:'Priority road', 
           13:'Yield', 14:'Stop', 15:'No vehicles', 16:'Veh > 3.5 tons prohibited', 17:'No entry', 
           18:'General caution', 19:'Dangerous curve left', 20:'Dangerous curve right', 21:'Double curve', 
           22:'Bumpy road', 23:'Slippery road', 24:'Road narrows on the right', 25:'Road work', 
           26:'Traffic signals', 27:'Pedestrians', 28:'Children crossing', 29:'Bicycles crossing', 
           30:'Beware of ice/snow',31:'Wild animals crossing', 32:'End speed + passing limits', 
           33:'Turn right ahead', 34:'Turn left ahead', 35:'Ahead only', 36:'Go straight or right', 
           37:'Go straight or left', 38:'Keep right', 39:'Keep left', 40:'Roundabout mandatory', 
           41:'End of no passing', 42:'End no passing veh > 3.5 tons' }

#Upload the image
file = st.file_uploader('Upload an image', type=['jpg', 'jpeg', 'png'])

if file is not None:
    #Display the uploaded image
    img = Image.open(file).convert('RGB')
    st.image(img, caption='Uploaded Image')
    #Process the uploaded image
    image = process_image(img)
    #Modell prediction
    prediction = model.predict(image)
    predicted_class = np.argmax(prediction)
    predicted_prob = np.max(prediction)
    #Display the prediction
    st.subheader(f'Prediction: {class_names[predicted_class]}')
    st.write(f'Confidence: {predicted_prob * 100:.2f}%')