app.py

import streamlit as st
import pickle
import tensorflow as tf
from PIL import Image
import numpy as np
import cv2
import pandas as pd
from tensorflow.keras.datasets import imdb
from tensorflow.keras.preprocessing.text import Tokenizer
from tensorflow.keras.models import save_model, load_model
from BackPropogation import BackPropogation
from sklearn.model_selection import train_test_split




def cnn_tumor(img):
    img=Image.open(img)
    img=np.array(img)
    img=cv2.cvtColor(img,cv2.COLOR_RGB2BGR)
    img_array = cv2.medianBlur(img, 5)
    img = Image.fromarray(cv2.cvtColor(img_array, cv2.COLOR_BGR2RGB))
    img=img.resize((128,128))
    input_img = np.expand_dims(img, axis=0)
    st.image(input_img, caption='Image Processing', use_column_width=True)
    loaded_model = tf.keras.models.load_model('cnn_model.h5')
    predictions = loaded_model.predict(input_img)    
    if predictions:
        st.write("Tumor Detected")
    else:
        st.write("No Tumor")

def perceptron():
    with open('perceptron_model.pkl', 'rb') as file:
        loaded_model = pickle.load(file)

    top_words = 5000
    (X_train, y_train), (X_test, y_test) = imdb.load_data(num_words=top_words)
    word_index = imdb.get_word_index()
    reverse_word_index = dict([(value, key) for (key, value) in word_index.items()])

    user_input = st.text_input("Enter your text:")

    if st.button("Predict"):

        if user_input:
            st.write("Review:", user_input)

            user_input_sequence = [word_index.get(word, 0) for word in user_input.split()]
            processed_input = tf.keras.preprocessing.sequence.pad_sequences([user_input_sequence], maxlen=500, padding='post', truncating='post')

            prediction = loaded_model.predict(processed_input)

            sentiment = 'Positive' if prediction[0] > 0.5 else 'Negative'
            st.write("Predicted Sentiment:", sentiment)
        else:
            st.warning("Please enter a text.")

def backprop():

    with open('back-propagation_model.pkl', 'rb') as file:
        loaded_model = pickle.load(file)

    top_words = 5000
    (X_train, y_train), (X_test, y_test) = imdb.load_data(num_words=top_words)

    word_index = imdb.get_word_index()
    reverse_word_index = dict([(value, key) for (key, value) in word_index.items()])

    user_input = st.text_input("Enter your text:")

    if st.button("Predict"):

        if user_input:
            st.write("Review:", user_input)

            user_input_sequence = [word_index.get(word, 0) for word in user_input.split()]
            processed_input = tf.keras.preprocessing.sequence.pad_sequences([user_input_sequence], maxlen=500, padding='post', truncating='post')

            prediction = loaded_model.predict(processed_input)

            sentiment = 'Positive' if prediction[0] > 0.5 else 'Negative'
            st.write("Predicted Sentiment:", sentiment)
        else:
            st.warning("Please enter a text.")

def dnn_model():
    user_input = st.text_input('Enter a sentence:')
    tokenizer = Tokenizer(num_words=10000, oov_token='<OOV>')
    tokenizer.fit_on_texts([user_input])
    sequences = tokenizer.texts_to_sequences([user_input])
    padded_sequence = tf.keras.preprocessing.sequence.pad_sequences(sequences, maxlen=500, padding='post', truncating='post')
    loaded_model = tf.keras.models.load_model('dnn_model.h5')
    if st.button('Predict'):
            prediction = loaded_model.predict(np.array(padded_sequence))
            sentiment = 'Positive' if prediction > 0.5 else 'Negative'
            st.success(f'Sentiment: {sentiment}, Confidence: {prediction[0][0]:.4f}') 


def rnn_model():
    loaded_model = tf.keras.models.load_model('rnn_model.h5')
    user_input_sequence = st.text_area("Enter your text message:")
    if st.button('Predict'):
        if user_input_sequence:
            tokenizer = Tokenizer(num_words=5000)
            tokenizer.fit_on_texts([user_input_sequence])
            sequences = tokenizer.texts_to_sequences([user_input_sequence])
            processed_input = tf.keras.preprocessing.sequence.pad_sequences(sequences, maxlen=10, padding='post', truncating='post')
    
            prediction = loaded_model.predict(np.array(processed_input))

            is_spam = 'Spam' if prediction[0] > 0.5 else 'Not Spam'
            st.write("Predicted Label:", is_spam)
        else:
            st.warning("Please enter a text message.")
                

def lstm_model():
    user_input = st.text_input('Enter a sentence:')
    tokenizer = Tokenizer(num_words=10000, oov_token='<OOV>')
    tokenizer.fit_on_texts([user_input])
    sequences = tokenizer.texts_to_sequences([user_input])
    padded_sequence = tf.keras.preprocessing.sequence.pad_sequences(sequences, maxlen=500, padding='post', truncating='post')
    loaded_model = tf.keras.models.load_model('lstm_model.h5')
    if st.button('Predict Sentiment'):
            prediction = loaded_model.predict(np.array(padded_sequence))
            sentiment = 'Positive' if prediction > 0.5 else 'Negative'
            st.success(f'Sentiment: {sentiment}, Confidence: {prediction[0][0]:.4f}')  




st.title('Prediction Model')
option = st.selectbox("Select task",['Tumor Detection','Sentiment Classification'])

if option=='Tumor Detection':
    st.title('CNN Tumor Detection Model')
    img=st.file_uploader("Upload your file here.....", type=['png', 'jpeg', 'jpg'])
    cnn_tumor(img)
else:
    opt=st.radio("Select your model for sentiment classification",key="visibility",options=["Perceptron",'Backpropogation','DNN','RNN','LSTM'])
    if opt=="Perceptron":
        st.title('Perceptron Model')
        perceptron()
    elif opt=="Backpropogation":
        st.title('Backpropogation Model')
        backprop()
    elif opt=='RNN':
        st.title('RNN Spam Detection')
        rnn_model()
    elif opt=='DNN':
        st.title('DNN Text Classification')
        dnn_model()
    else:
        st.title('LSTM Sentiment Analysis')
        lstm_model()