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53bec59 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | """Utility module for face detection."""
import cv2
import numpy as np
from typing import List, Tuple
from PIL import Image
def detect_faces(image: Image.Image) -> List[Tuple[int, int, int, int]]:
"""
Detect faces in an image.
Args:
image: PIL Image
Returns:
List of face bounding boxes (x, y, w, h)
"""
# Convert PIL to OpenCV format
img_array = np.array(image)
gray = cv2.cvtColor(img_array, cv2.COLOR_RGB2GRAY)
# Load Haar Cascade
face_cascade = cv2.CascadeClassifier(
cv2.data.haarcascades + 'haarcascade_frontalface_default.xml'
)
# Detect faces
faces = face_cascade.detectMultiScale(
gray,
scaleFactor=1.1,
minNeighbors=5,
minSize=(30, 30)
)
return faces.tolist() if len(faces) > 0 else []
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