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# Face Detection-Based AI Automation of Lab Tests
# UI: Clean table, multilingual summary, PDF-ready
import gradio as gr
import cv2
import numpy as np
import mediapipe as mp
from fpdf import FPDF
import os
mp_face_mesh = mp.solutions.face_mesh
face_mesh = mp_face_mesh.FaceMesh(static_image_mode=True, max_num_faces=1, refine_landmarks=True, min_detection_confidence=0.5)
def estimate_heart_rate(frame, landmarks):
h, w, _ = frame.shape
forehead_pts = [landmarks[10], landmarks[338], landmarks[297], landmarks[332]]
mask = np.zeros((h, w), dtype=np.uint8)
pts = np.array([[int(pt.x * w), int(pt.y * h)] for pt in forehead_pts], np.int32)
cv2.fillConvexPoly(mask, pts, 255)
green_channel = cv2.split(frame)[1]
mean_intensity = cv2.mean(green_channel, mask=mask)[0]
heart_rate = int(60 + 30 * np.sin(mean_intensity / 255.0 * np.pi))
return heart_rate
def estimate_spo2_rr(heart_rate):
spo2 = min(100, max(90, 97 + (heart_rate % 5 - 2)))
rr = int(12 + abs(heart_rate % 5 - 2))
return spo2, rr
def get_risk_color(value, normal_range):
low, high = normal_range
if value < low:
return ("Low", "🔻", "#FFCCCC")
elif value > high:
return ("High", "🔺", "#FFE680")
else:
return ("Normal", "✅", "#CCFFCC")
def generate_pdf_report(image, results_dict, summary_text):
pdf = FPDF()
pdf.add_page()
pdf.set_font("Arial", "B", 16)
pdf.cell(0, 10, "SL Diagnostics - Face Scan AI Lab Report", ln=True, align='C')
if image is not None:
img_path = "patient_face.jpg"
cv2.imwrite(img_path, cv2.cvtColor(image, cv2.COLOR_RGB2BGR))
pdf.image(img_path, x=80, y=25, w=50)
os.remove(img_path)
pdf.ln(60)
pdf.set_font("Arial", "B", 12)
pdf.cell(0, 10, "Results Summary", ln=True)
pdf.set_font("Arial", "", 10)
for key, val in results_dict.items():
if isinstance(val, (int, float)):
pdf.cell(0, 8, f"{key}: {val}", ln=True)
pdf.ln(5)
pdf.set_font("Arial", "B", 12)
pdf.cell(0, 10, "AI Summary (English)", ln=True)
pdf.set_font("Arial", "", 10)
for line in summary_text.split("<li>"):
if "</li>" in line:
clean = line.split("</li>")[0].strip()
pdf.multi_cell(0, 8, f"- {clean}")
output_path = "/mnt/data/SL_Diagnostics_Face_Scan_Report.pdf"
pdf.output(output_path)
return output_path
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