app.py

from PIL import Image
import numpy as np
import cv2
import requests
import face_recognition
import os
from datetime import datetime
import streamlit as st
import sqlite3

# Set page title and description
st.set_page_config(
    page_title="Attendance System Using Face Recognition",
    page_icon="📷",
    layout="centered",
    initial_sidebar_state="collapsed"
)
st.title("Attendance System Using Face Recognition 📷")
st.markdown("This app recognizes faces in an image, verifies Aadhaar card details, and updates attendance records with the current timestamp & Location.")

# Create or connect to the SQLite database
conn = sqlite3.connect("attendance_database.db")
cursor = conn.cursor()

# Check if the 'faces' table exists, create it if not
cursor.execute('''
    CREATE TABLE IF NOT EXISTS faces (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        aadhaar TEXT,
        encoding BLOB
    )
''')
conn.commit()

# Load images for face recognition
Images = []
classnames = []
directory = "photos"

myList = os.listdir(directory)

for cls in myList:
    if os.path.splitext(cls)[1] in [".jpg", ".jpeg"]:
        img_path = os.path.join(directory, cls)
        curImg = cv2.imread(img_path)
        Images.append(curImg)
        classnames.append(os.path.splitext(cls)[0])

def findEncodings(Images):
    encodeList = []
    for img in Images:
        img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        encode = face_recognition.face_encodings(img)[0]
        encodeList.append(encode)
    return encodeList

encodeListknown = findEncodings(Images)

# Function to validate Aadhaar card number
def validate_aadhaar(aadhaar):
    # Implement your Aadhaar card validation logic here
    # For simplicity, let's assume any 4-digit number is a valid Aadhaar card
    return len(aadhaar) == 4 and aadhaar.isdigit()

# Take picture using the camera and input Aadhaar card details
img_file_buffer = st.file_uploader("Upload an image", type=["jpg", "jpeg"])
aadhaar_number = st.text_input("Enter Aadhaar Number:")

# Face recognition code...
if img_file_buffer is not None:
    # Validate Aadhaar card number
    if validate_aadhaar(aadhaar_number):
        test_image = Image.open(img_file_buffer)
        image = np.asarray(test_image)

        imgS = cv2.resize(image, (0, 0), None, 0.25, 0.25)
        imgS = cv2.cvtColor(imgS, cv2.COLOR_BGR2RGB)
        facesCurFrame = face_recognition.face_locations(imgS)
        encodesCurFrame = face_recognition.face_encodings(imgS, facesCurFrame)

        name = "Unknown"  # Default name for unknown faces

        if len(encodesCurFrame) > 0:
            for encodeFace, faceLoc in zip(encodesCurFrame, facesCurFrame):
                matches = face_recognition.compare_faces(encodeListknown, encodeFace)
                faceDis = face_recognition.face_distance(encodeListknown, encodeFace)
                matchIndex = np.argmin(faceDis)

                if matches[matchIndex]:
                    name = classnames[matchIndex].upper()

                y1, x2, y2, x1 = faceLoc
                y1, x2, y2, x1 = y1 * 4, x2 * 4, y2 * 4, x1 * 4
                cv2.rectangle(image, (x1, y1), (x2, y2), (0, 255, 0), 2)
                cv2.rectangle(image, (x1, y2 - 35), (x2, y2), (0, 255, 0), cv2.FILLED)
                cv2.putText(image, name, (x1 + 6, y2 - 6), cv2.FONT_HERSHEY_COMPLEX, 1, (255, 255, 255), 2)

                if name != "Unknown":
                    # Update Aadhaar data
                    url = "https://attendanceviaface.000webhostapp.com"
                    url1 = "/update.php"
                    data1 = {'name': name, 'aadhaar': aadhaar_number}
                    response = requests.post(url + url1, data=data1)

                    if response.status_code == 200:
                        st.success("Data updated on: " + url)
                    else:
                        st.warning("Data not updated")

                    # Store face encoding and Aadhaar number in the database
                    face_encoding_bytes = pickle.dumps(encodeFace)
                    cursor.execute("INSERT INTO faces (aadhaar, encoding) VALUES (?, ?)", (aadhaar_number, face_encoding_bytes))
                    conn.commit()

        # Apply styling with CSS
        st.markdown('<style>img { animation: pulse 2s infinite; }</style>', unsafe_allow_html=True)
        st.image(image, use_column_width=True, output_format="PNG")

        if name == "Unknown":
            st.info("Face not detected. Please try again.")
    else:
        st.error("Invalid Aadhaar card number. Please enter a valid 4-digit Aadhaar number.")

# Close the database connection
conn.close()