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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Certificate Verifier - with Annotated Images</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
padding: 20px;
}
.container {
max-width: 1200px;
margin: 0 auto;
}
.header {
text-align: center;
color: white;
margin-bottom: 30px;
}
.header h1 {
font-size: 2.5em;
margin-bottom: 10px;
}
.card {
background: white;
border-radius: 15px;
padding: 30px;
box-shadow: 0 10px 30px rgba(0,0,0,0.2);
margin-bottom: 20px;
}
.upload-area {
border: 3px dashed #667eea;
border-radius: 10px;
padding: 40px;
text-align: center;
cursor: pointer;
transition: all 0.3s;
}
.upload-area:hover {
border-color: #764ba2;
background: #f8f9ff;
}
.upload-area.dragover {
background: #e8ebff;
border-color: #764ba2;
}
.btn {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
border: none;
padding: 12px 30px;
border-radius: 25px;
font-size: 16px;
cursor: pointer;
transition: transform 0.2s;
margin: 10px 5px;
}
.btn:hover {
transform: translateY(-2px);
box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}
.btn:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.checkbox-group {
margin: 20px 0;
padding: 15px;
background: #f8f9ff;
border-radius: 10px;
}
.checkbox-group label {
display: flex;
align-items: center;
font-size: 16px;
cursor: pointer;
margin: 10px 0;
}
.checkbox-group input[type="checkbox"] {
width: 20px;
height: 20px;
margin-right: 10px;
cursor: pointer;
}
.loading {
display: none;
text-align: center;
padding: 20px;
}
.spinner {
border: 4px solid #f3f3f3;
border-top: 4px solid #667eea;
border-radius: 50%;
width: 50px;
height: 50px;
animation: spin 1s linear infinite;
margin: 0 auto;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.result {
display: none;
margin-top: 20px;
}
.result-authentic {
background: #d4edda;
border-left: 5px solid #28a745;
padding: 20px;
border-radius: 5px;
}
.result-fake {
background: #f8d7da;
border-left: 5px solid #dc3545;
padding: 20px;
border-radius: 5px;
}
.result-suspicious {
background: #fff3cd;
border-left: 5px solid #ffc107;
padding: 20px;
border-radius: 5px;
}
.image-container {
margin-top: 20px;
}
.image-comparison {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin-top: 20px;
}
.image-box {
text-align: center;
}
.image-box h3 {
margin-bottom: 10px;
color: #333;
}
.image-box img {
max-width: 100%;
border-radius: 10px;
box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.details {
margin-top: 20px;
padding: 15px;
background: #f8f9fa;
border-radius: 5px;
}
.detail-row {
display: flex;
justify-content: space-between;
padding: 8px 0;
border-bottom: 1px solid #dee2e6;
}
.detail-row:last-child {
border-bottom: none;
}
.legend {
background: #f8f9ff;
padding: 15px;
border-radius: 10px;
margin-top: 20px;
}
.legend h4 {
margin-bottom: 10px;
color: #667eea;
}
.legend-item {
display: flex;
align-items: center;
margin: 8px 0;
}
.legend-color {
width: 30px;
height: 20px;
border-radius: 3px;
margin-right: 10px;
border: 2px solid #333;
}
@media (max-width: 768px) {
.image-comparison {
grid-template-columns: 1fr;
}
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<h1>🎓 Certificate Verifier</h1>
<p>AI-Powered Certificate Authentication with Visual Seal Detection</p>
</div>
<div class="card">
<div class="upload-area" id="uploadArea">
<h2>📁 Upload Certificate</h2>
<p>Click to select or drag & drop your certificate image</p>
<input type="file" id="fileInput" accept="image/*" style="display: none;">
</div>
<div class="checkbox-group">
<label>
<input type="checkbox" id="returnImageCheck" checked>
<strong>Show Annotated Image</strong> - Display certificate with colored boxes around seals (🟢 Authentic / 🔴 Fake)
</label>
<label>
<input type="checkbox" id="sealVerificationCheck" checked>
<strong>Enable Seal Verification</strong> - Use AI to detect and verify seals
</label>
</div>
<div style="text-align: center;">
<button class="btn" id="verifyBtn" disabled>🔍 Verify Certificate</button>
<button class="btn" id="clearBtn" style="background: #6c757d;">🗑️ Clear</button>
</div>
<div class="loading" id="loading">
<div class="spinner"></div>
<p style="margin-top: 15px;">Analyzing certificate...</p>
</div>
<div class="result" id="result"></div>
</div>
<div class="legend">
<h4>📊 How to Read the Annotated Image:</h4>
<div class="legend-item">
<div class="legend-color" style="background-color: rgb(0, 255, 0);"></div>
<span><strong>Green Box:</strong> Authentic seal detected with high confidence</span>
</div>
<div class="legend-item">
<div class="legend-color" style="background-color: rgb(255, 0, 0);"></div>
<span><strong>Red Box:</strong> Fake seal detected - certificate may be fraudulent</span>
</div>
<div class="legend-item">
<div class="legend-color" style="background-color: rgb(255, 255, 0);"></div>
<span><strong>Yellow Box:</strong> Suspicious seal - requires manual review</span>
</div>
</div>
</div>
<script>
const uploadArea = document.getElementById('uploadArea');
const fileInput = document.getElementById('fileInput');
const verifyBtn = document.getElementById('verifyBtn');
const clearBtn = document.getElementById('clearBtn');
const loading = document.getElementById('loading');
const result = document.getElementById('result');
const returnImageCheck = document.getElementById('returnImageCheck');
const sealVerificationCheck = document.getElementById('sealVerificationCheck');
let selectedFile = null;
let originalImageUrl = null;
// Upload area click
uploadArea.addEventListener('click', () => fileInput.click());
// File selection
fileInput.addEventListener('change', (e) => {
if (e.target.files.length > 0) {
selectedFile = e.target.files[0];
originalImageUrl = URL.createObjectURL(selectedFile);
uploadArea.innerHTML = `<p>✅ Selected: ${selectedFile.name}</p>`;
verifyBtn.disabled = false;
}
});
// Drag and drop
uploadArea.addEventListener('dragover', (e) => {
e.preventDefault();
uploadArea.classList.add('dragover');
});
uploadArea.addEventListener('dragleave', () => {
uploadArea.classList.remove('dragover');
});
uploadArea.addEventListener('drop', (e) => {
e.preventDefault();
uploadArea.classList.remove('dragover');
if (e.dataTransfer.files.length > 0) {
selectedFile = e.dataTransfer.files[0];
originalImageUrl = URL.createObjectURL(selectedFile);
uploadArea.innerHTML = `<p>✅ Selected: ${selectedFile.name}</p>`;
verifyBtn.disabled = false;
}
});
// Clear button
clearBtn.addEventListener('click', () => {
selectedFile = null;
originalImageUrl = null;
fileInput.value = '';
uploadArea.innerHTML = `
<h2>📁 Upload Certificate</h2>
<p>Click to select or drag & drop your certificate image</p>
`;
result.style.display = 'none';
verifyBtn.disabled = true;
});
// Verify button
verifyBtn.addEventListener('click', async () => {
if (!selectedFile) return;
// Show loading
loading.style.display = 'block';
result.style.display = 'none';
verifyBtn.disabled = true;
// Prepare form data
const formData = new FormData();
formData.append('files', selectedFile);
// Build URL with parameters
const returnImage = returnImageCheck.checked;
const sealVerification = sealVerificationCheck.checked;
const url = `http://localhost:8000/api/verify?return_image=${returnImage}&enable_seal_verification=${sealVerification}`;
try {
const response = await fetch(url, {
method: 'POST',
body: formData
});
const data = await response.json();
// Hide loading
loading.style.display = 'none';
// Display results
displayResults(data);
} catch (error) {
loading.style.display = 'none';
result.innerHTML = `
<div class="result-fake">
<h3>❌ Error</h3>
<p>${error.message}</p>
</div>
`;
result.style.display = 'block';
}
verifyBtn.disabled = false;
});
function displayResults(data) {
const decision = data.decision;
let resultClass = 'result-suspicious';
let icon = '⚠️';
if (decision === 'AUTHENTIC') {
resultClass = 'result-authentic';
icon = '✅';
} else if (decision === 'FAKE') {
resultClass = 'result-fake';
icon = '❌';
}
let html = `
<div class="${resultClass}">
<h2>${icon} ${decision}</h2>
<p><strong>Confidence:</strong> ${(data.confidence * 100).toFixed(1)}%</p>
<p><strong>Reason:</strong> ${data.reason}</p>
<p><strong>Processing Time:</strong> ${data.processing_time_seconds}s</p>
</div>
`;
// Show image comparison if annotated image is available
if (data.annotated_image_url) {
html += `
<div class="image-comparison">
<div class="image-box">
<h3>Original Certificate</h3>
<img src="${originalImageUrl}" alt="Original">
</div>
<div class="image-box">
<h3>🎨 Annotated (Seal Detection)</h3>
<img src="${data.annotated_image_url}" alt="Annotated">
</div>
</div>
`;
} else if (originalImageUrl) {
html += `
<div class="image-container">
<h3>Certificate Image</h3>
<img src="${originalImageUrl}" alt="Certificate" style="max-width: 100%; border-radius: 10px;">
</div>
`;
}
// Show seal details
const sealInfo = data.details?.seal_verification;
if (sealInfo && sealInfo.total_seals > 0) {
html += `
<div class="details">
<h3>🔍 Seal Detection Details</h3>
<div class="detail-row">
<span>Total Seals:</span>
<strong>${sealInfo.total_seals}</strong>
</div>
<div class="detail-row">
<span>✅ Authentic:</span>
<strong>${sealInfo.authentic_seals}</strong>
</div>
<div class="detail-row">
<span>❌ Fake:</span>
<strong>${sealInfo.fake_seals}</strong>
</div>
<div class="detail-row">
<span>Detection Method:</span>
<strong>${sealInfo.detection_method}</strong>
</div>
</div>
`;
}
// Show cropped seals if available
if (data.cropped_seals && data.cropped_seals.length > 0) {
html += `
<div style="margin-top: 20px;">
<h3>📸 Cropped Seals</h3>
<div style="display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 15px; margin-top: 15px;">
`;
data.cropped_seals.forEach(seal => {
const statusColor = seal.class === 'true' ? '#28a745' : seal.class === 'fake' ? '#dc3545' : '#ffc107';
const statusIcon = seal.class === 'true' ? '✅' : seal.class === 'fake' ? '❌' : '⚠️';
const statusText = seal.class === 'true' ? 'Authentic' : seal.class === 'fake' ? 'Fake' : 'Suspicious';
html += `
<div style="border: 3px solid ${statusColor}; border-radius: 10px; padding: 10px; text-align: center; background: white;">
<img src="${seal.image_url}" alt="Seal ${seal.seal_number}" style="max-width: 100%; border-radius: 5px;">
<div style="margin-top: 8px; font-weight: bold; color: ${statusColor};">
${statusIcon} Seal ${seal.seal_number}
</div>
<div style="font-size: 12px; color: #666;">
${statusText}<br>
${(seal.confidence * 100).toFixed(1)}%
</div>
</div>
`;
});
html += `
</div>
</div>
`;
}
result.innerHTML = html;
result.style.display = 'block';
}
</script>
</body>
</html>
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