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import streamlit as st
import cv2
import numpy as np
import mediapipe as mp
import pickle
# Load models directly
with open('random_forest_model.pkl', 'rb') as file:
random_forest_model = pickle.load(file)
with open('svm_model.pkl', 'rb') as file:
svm_model = pickle.load(file)
with open('hard_voting_classifier.pkl', 'rb') as file:
hard_voting_model = pickle.load(file)
with open('soft_voting_classifier.pkl', 'rb') as file:
soft_voting_model = pickle.load(file)
label_classes = np.load('label_classes.npy', allow_pickle=True)
models = {
'Random Forest': random_forest_model,
'SVM': svm_model,
'Hard Voting': hard_voting_model,
'Soft Voting': soft_voting_model
}
# Initialize MediaPipe Hands
mp_hands = mp.solutions.hands
hands = mp_hands.Hands(static_image_mode=True, max_num_hands=1, min_detection_confidence=0.5)
def process_landmarks(hand_landmarks):
x_ = [landmark.x for landmark in hand_landmarks.landmark]
y_ = [landmark.y for landmark in hand_landmarks.landmark]
min_x, min_y = min(x_), min(y_)
return [coord - min_val for landmark in hand_landmarks.landmark for coord, min_val in zip((landmark.x, landmark.y), (min_x, min_y))]
def get_model_predictions(data_aux, model):
if hasattr(model, 'predict_proba'):
probabilities = model.predict_proba([data_aux])[0]
elif hasattr(model, 'decision_function'):
scores = model.decision_function([data_aux])[0]
probabilities = (scores - scores.min()) / (scores.max() - scores.min())
else:
class_pred = model.predict([data_aux])[0]
probabilities = np.zeros(len(label_encoder.classes_))
probabilities[class_pred] = 1
top_index = np.argmax(probabilities)
return label_encoder.inverse_transform([top_index])[0], probabilities[top_index]
def predict_alphabet(image):
image_rgb = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
results = hands.process(image_rgb)
if not results.multi_hand_landmarks:
return None, None
data_aux = process_landmarks(results.multi_hand_landmarks[0])
predictions = {}
for model_name, model in models.items():
prediction, probability = get_model_predictions(data_aux, model)
predictions[model_name] = (prediction, probability)
return predictions, results.multi_hand_landmarks[0]
def draw_hand_landmarks(image, hand_landmarks):
for landmark in hand_landmarks.landmark:
h, w, _ = image.shape
cx, cy = int(landmark.x * w), int(landmark.y * h)
cv2.circle(image, (cx, cy), 5, (0, 255, 0), -1)
return image
# Streamlit App
st.title("ASL Hand Shape Recognition App")
uploaded_file = st.file_uploader("Choose a hand image...", type=["jpg", "jpeg", "png"])
if uploaded_file is not None:
image = cv2.imdecode(np.frombuffer(uploaded_file.read(), np.uint8), 1)
st.image(image, channels="BGR", caption="Uploaded Hand Image")
predictions, hand_landmarks = predict_alphabet(image)
if predictions and hand_landmarks:
st.subheader("Predictions:")
for model_name, (prediction, probability) in predictions.items():
st.write(f"{model_name}: {prediction} (Probability: {probability:.2f})")
st.subheader("Hand Landmarks:")
landmark_image = draw_hand_landmarks(image.copy(), hand_landmarks)
st.image(landmark_image, channels="BGR", caption="Hand Landmarks")
else:
st.write("No hand detected in the image.")
# User input to draw hand sign (placeholder)
user_input = st.text_input("Enter alphabet to draw hand sign:")
if user_input:
if len(user_input) == 1 and user_input.isalpha():
st.write(f"Drawing hand sign for alphabet: {user_input.upper()}")
# Placeholder for drawing hand sign
st.write("(Hand sign drawing functionality not implemented)")
else:
st.error("Please enter a single alphabet.")
# Release MediaPipe resources
hands.close() |