diff --git a/document_history.php b/document_history.php
new file mode 100644
index 0000000..5681ca4
--- /dev/null
+++ b/document_history.php
@@ -0,0 +1,85 @@
+<?php
+if (!isset($_SESSION['user_id'])) {
+    header("Location: login.php");
+    exit();
+}
+
+// Conectar ao banco de dados
+$mysqli = new mysqli("10.15.0.42", "root", "34641747", "valida");
+
+if ($mysqli->connect_error) {
+    die("Connection failed: " . $mysqli->connect_error);
+}
+
+// Buscar histórico de documentos processados
+$query = "SELECT pd.*, u.username FROM processed_documents pd 
+          LEFT JOIN users u ON pd.user_id = u.id 
+          ORDER BY pd.created_at DESC";
+$result = $mysqli->query($query);
+?>
+
+<div class="container">
+    <h2>Histórico de Documentos Processados</h2>
+    
+    <table class="data-table">
+        <thead>
+            <tr>
+                <th>Data/Hora</th>
+                <th>Usuário</th>
+                <th>Documento Original</th>
+                <th>Documento Processado</th>
+                <th>Ações</th>
+            </tr>
+        </thead>
+        <tbody>
+            <?php while ($row = $result->fetch_assoc()): ?>
+            <tr>
+                <td><?php echo date('d/m/Y H:i:s', strtotime($row['created_at'])); ?></td>
+                <td><?php echo htmlspecialchars($row['username']); ?></td>
+                <td>
+                    <a href="<?php echo htmlspecialchars($row['original_path']); ?>" target="_blank">
+                        Ver Original
+                    </a>
+                </td>
+                <td>
+                    <a href="<?php echo htmlspecialchars($row['processed_path']); ?>" target="_blank">
+                        Ver Processado
+                    </a>
+                </td>
+                <td>
+                    <button onclick="deleteDocument(<?php echo $row['id']; ?>)" class="delete-btn">
+                        Excluir
+                    </button>
+                </td>
+            </tr>
+            <?php endwhile; ?>
+        </tbody>
+    </table>
+</div>
+
+<script>
+function deleteDocument(id) {
+    if (confirm('Tem certeza que deseja excluir este documento?')) {
+        fetch('delete_document.php', {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            body: JSON.stringify({id: id})
+        })
+        .then(response => response.json())
+        .then(data => {
+            if (data.success) {
+                alert('Documento excluído com sucesso!');
+                location.reload();
+            } else {
+                alert('Erro ao excluir documento: ' + data.message);
+            }
+        })
+        .catch(error => {
+            console.error('Error:', error);
+            alert('Erro ao excluir documento');
+        });
+    }
+}
+</script>
diff --git a/document_processor.php b/document_processor.php
new file mode 100644
index 0000000..46b0f04
--- /dev/null
+++ b/document_processor.php
@@ -0,0 +1,230 @@
+<?php
+class DocumentProcessor {
+    private $srcImage;
+    private $processedImage;
+    private $outputPath;
+    
+    public function __construct() {
+        if (!extension_loaded('gd')) {
+            throw new Exception('GD extension is required');
+        }
+    }
+
+    public function processDocument($imagePath, $outputPath) {
+        $this->outputPath = $outputPath;
+        
+        // Detecta o tipo da imagem e carrega
+        $imageInfo = getimagesize($imagePath);
+        if ($imageInfo === false) {
+            throw new Exception('Failed to load image');
+        }
+
+        switch ($imageInfo[2]) {
+            case IMAGETYPE_JPEG:
+                $this->srcImage = imagecreatefromjpeg($imagePath);
+                break;
+            case IMAGETYPE_PNG:
+                $this->srcImage = imagecreatefrompng($imagePath);
+                break;
+            default:
+                throw new Exception('Unsupported image type');
+        }
+
+        if ($this->srcImage === false) {
+            throw new Exception('Failed to create image resource');
+        }
+
+        // Simplifica o pipeline para focar apenas na detecção e recorte
+        $this->detectAndCropDocument()
+             ->saveResult();
+
+        return $this->outputPath;
+    }
+
+    private function detectAndCropDocument() {
+        $width = imagesx($this->srcImage);
+        $height = imagesy($this->srcImage);
+        
+        // Cria imagem temporária em escala de cinza
+        $gray = imagecreatetruecolor($width, $height);
+        imagecopy($gray, $this->srcImage, 0, 0, 0, 0, $width, $height);
+        imagefilter($gray, IMG_FILTER_GRAYSCALE);
+        
+        // Aplica threshold adaptativo para binarização
+        $threshold = $this->getAdaptiveThreshold($gray);
+        $binary = imagecreatetruecolor($width, $height);
+        
+        for ($x = 0; $x < $width; $x++) {
+            for ($y = 0; $y < $height; $y++) {
+                $rgb = imagecolorat($gray, $x, $y);
+                $colors = imagecolorsforindex($gray, $rgb);
+                $value = ($colors['red'] + $colors['green'] + $colors['blue']) / 3;
+                
+                if ($value > $threshold) {
+                    imagesetpixel($binary, $x, $y, 0xFFFFFF);
+                } else {
+                    imagesetpixel($binary, $x, $y, 0x000000);
+                }
+            }
+        }
+        
+        // Encontra os contornos do documento
+        $bounds = $this->findDocumentBounds($binary);
+        
+        if ($bounds) {
+            // Adiciona margem de segurança
+            $margin = 10;
+            $cropX = max(0, $bounds['left'] - $margin);
+            $cropY = max(0, $bounds['top'] - $margin);
+            $cropWidth = min($width - $cropX, $bounds['right'] - $bounds['left'] + 2 * $margin);
+            for ($y = 0; $y < $height; $y += 10) {
+                $rgb = imagecolorat($img, $x, $y);
+                $colors = imagecolorsforindex($img, $rgb);
+                
+                // Detecta mudanças bruscas de intensidade
+                if ($this->isEdgePoint($img, $x, $y)) {
+                    $points[] = [$x, $y];
+                }
+            }
+        }
+        
+        // Encontra os 4 cantos do documento
+        if (count($points) >= 4) {
+            return $this->findCornerPoints($points);
+        }
+        
+        return null;
+    }
+
+    private function isEdgePoint($img, $x, $y) {
+        $threshold = 30;
+        
+        // Verifica pixels vizinhos
+        $center = $this->getPixelIntensity($img, $x, $y);
+        $left = $this->getPixelIntensity($img, $x - 1, $y);
+        $right = $this->getPixelIntensity($img, $x + 1, $y);
+        $top = $this->getPixelIntensity($img, $x, $y - 1);
+        $bottom = $this->getPixelIntensity($img, $x, $y + 1);
+        
+        return (abs($center - $left) > $threshold ||
+                abs($center - $right) > $threshold ||
+                abs($center - $top) > $threshold ||
+                abs($center - $bottom) > $threshold);
+    }
+
+    private function getPixelIntensity($img, $x, $y) {
+        if ($x < 0 || $y < 0 || $x >= imagesx($img) || $y >= imagesy($img)) {
+            return 0;
+        }
+        
+        $rgb = imagecolorat($img, $x, $y);
+        $colors = imagecolorsforindex($img, $rgb);
+        return ($colors['red'] + $colors['green'] + $colors['blue']) / 3;
+    }
+
+    private function findCornerPoints($points) {
+        // Encontra os pontos mais extremos
+        $topLeft = null;
+        $topRight = null;
+        $bottomLeft = null;
+        $bottomRight = null;
+        $minSum = PHP_FLOAT_MAX;
+        $maxSum = PHP_FLOAT_MIN;
+        $minDiff = PHP_FLOAT_MAX;
+        $maxDiff = PHP_FLOAT_MIN;
+        
+        foreach ($points as $point) {
+            $sum = $point[0] + $point[1];
+            $diff = $point[0] - $point[1];
+            
+            if ($sum < $minSum) {
+                $minSum = $sum;
+                $topLeft = $point;
+            }
+            if ($sum > $maxSum) {
+                $maxSum = $sum;
+                $bottomRight = $point;
+            }
+            if ($diff < $minDiff) {
+                $minDiff = $diff;
+                $bottomLeft = $point;
+            }
+            if ($diff > $maxDiff) {
+                $maxDiff = $diff;
+                $topRight = $point;
+            }
+        }
+        
+        if ($topLeft && $topRight && $bottomLeft && $bottomRight) {
+            return [$topLeft, $topRight, $bottomRight, $bottomLeft];
+        }
+        
+        return null;
+    }
+
+    private function cropAndTransform($img, $corners) {
+        $width = abs($corners[1][0] - $corners[0][0]);
+        $height = abs($corners[3][1] - $corners[0][1]);
+        
+        $dest = imagecreatetruecolor($width, $height);
+        
+        // Preserva transparência
+        imagealphablending($dest, false);
+        imagesavealpha($dest, true);
+        
+        // Define pontos de destino
+        $dest_points = [
+            0, 0,
+            $width - 1, 0,
+            $width - 1, $height - 1,
+            0, $height - 1
+        ];
+        
+        // Define pontos de origem
+        $src_points = [];
+        foreach ($corners as $corner) {
+            $src_points[] = $corner[0];
+            $src_points[] = $corner[1];
+        }
+        
+        // Aplica transformação perspectiva
+        imagecopyresampled(
+            $dest, $img,
+            0, 0, min($src_points[0], $src_points[6]), min($src_points[1], $src_points[3]),
+            $width, $height,
+            max($src_points[2], $src_points[4]) - min($src_points[0], $src_points[6]),
+            max($src_points[5], $src_points[7]) - min($src_points[1], $src_points[3])
+        );
+        
+        return $dest;
+    }
+
+    private function saveResult() {
+        if (!isset($this->processedImage)) {
+            throw new Exception('No processed image to save');
+        }
+
+        $extension = strtolower(pathinfo($this->outputPath, PATHINFO_EXTENSION));
+        
+        switch ($extension) {
+            case 'jpg':
+            case 'jpeg':
+                imagejpeg($this->processedImage, $this->outputPath, 90);
+                break;
+            case 'png':
+                imagepng($this->processedImage, $this->outputPath, 9);
+                break;
+            default:
+                throw new Exception('Unsupported output image type');
+        }
+
+        if (is_resource($this->srcImage)) {
+            imagedestroy($this->srcImage);
+        }
+        if (is_resource($this->processedImage)) {
+            imagedestroy($this->processedImage);
+        }
+
+        return $this;
+    }
+}
diff --git a/index.php b/index.php
index 442e759..c089384 100644
--- a/index.php
+++ b/index.php
@@ -52,6 +52,10 @@ include 'top_menu.php';
                 include 'clientes/edit_note.php';
             } elseif ($page == 'delete_note' && isset($_POST['id'])) {
                 include 'clientes/delete_note.php';
+            } elseif ($page == 'process_document') {
+                include 'process_document.php';
+            } elseif ($page == 'document_history') {
+                include 'document_history.php';
             } else {
                 echo "<h2>Bem-vindo ao Sistema de Ferramentas</h2>";
             }
diff --git a/menu.php b/menu.php
index afd199e..4cd19d0 100644
--- a/menu.php
+++ b/menu.php
@@ -12,7 +12,7 @@ if (!isset($_SESSION['user_id'])) {
         <li>
             <a href="javascript:void(0);" onclick="toggleSubmenu('submenu1')">Autenticador de Provas Digitais</a>
             <ul id="submenu1" class="submenu">
-                <li><a href="index.php?page=upload">Upload de Arquivos</a></li>
+                <li><a href="/prova/upload_prova.php">Upload de Arquivos</a></li>
                 <li><a href="index.php?page=status">Ver Status</a></li>
                 <li><a href="index.php?page=list_files">Lista de Arquivos Processados</a></li>
             </ul>
@@ -24,6 +24,13 @@ if (!isset($_SESSION['user_id'])) {
                 <li><a href="index.php?page=list_clients">Listagem de Clientes</a></li>
             </ul>
         </li>
+        <li>
+            <a href="javascript:void(0);" onclick="toggleSubmenu('submenu3')">Processamento de Documentos</a>
+            <ul id="submenu3" class="submenu">
+                <li><a href="index.php?page=process_document">Processar Documento</a></li>
+                <li><a href="index.php?page=document_history">Histórico</a></li>
+            </ul>
+        </li>
         <!-- Adicione mais ferramentas aqui -->
     </ul>
 </div>
diff --git a/process_document.php b/process_document.php
new file mode 100644
index 0000000..0e93852
--- /dev/null
+++ b/process_document.php
@@ -0,0 +1,85 @@
+<?php
+if (!isset($_SESSION['user_id'])) {
+    header("Location: login.php");
+    exit();
+}
+
+require_once 'document_processor.php';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['document'])) {
+    try {
+        $file = $_FILES['document'];
+        $uploadDir = 'uploads/documents/';
+        $processedDir = 'uploads/processed/';
+        
+        // Cria diretórios se não existirem
+        if (!file_exists($uploadDir)) {
+            mkdir($uploadDir, 0777, true);
+        }
+        if (!file_exists($processedDir)) {
+            mkdir($processedDir, 0777, true);
+        }
+
+        // Gera nomes únicos para os arquivos
+        $originalName = basename($file['name']);
+        $extension = pathinfo($originalName, PATHINFO_EXTENSION);
+        $timestamp = time();
+        $uploadFile = $uploadDir . $timestamp . '_' . $originalName;
+        $processedFile = $processedDir . $timestamp . '_processed.' . $extension;
+
+        if (move_uploaded_file($file['tmp_name'], $uploadFile)) {
+            $processor = new DocumentProcessor();
+            $result = $processor->processDocument($uploadFile, $processedFile);
+            
+            // Salva o registro no banco de dados
+            $mysqli = new mysqli("10.15.0.42", "root", "34641747", "valida");
+            $stmt = $mysqli->prepare("INSERT INTO processed_documents (user_id, original_path, processed_path, created_at) VALUES (?, ?, ?, NOW())");
+            $stmt->bind_param("iss", $_SESSION['user_id'], $uploadFile, $processedFile);
+            $stmt->execute();
+            
+            $message = "Documento processado com sucesso!";
+            $success = true;
+        } else {
+            throw new Exception("Falha ao fazer upload do arquivo.");
+        }
+    } catch (Exception $e) {
+        $message = "Erro: " . $e->getMessage();
+        $success = false;
+    }
+}
+?>
+
+<div class="container">
+    <h2>Processamento de Documentos</h2>
+    
+    <?php if (isset($message)): ?>
+        <div class="alert <?php echo $success ? 'alert-success' : 'alert-error'; ?>">
+            <?php echo htmlspecialchars($message); ?>
+        </div>
+    <?php endif; ?>
+
+    <form method="POST" enctype="multipart/form-data" class="upload-form">
+        <div class="form-group">
+            <label for="document">Selecione o documento:</label>
+            <input type="file" id="document" name="document" accept="image/*" required>
+        </div>
+        
+        <button type="submit" class="btn btn-primary">Processar Documento</button>
+    </form>
+
+    <?php if (isset($processedFile) && file_exists($processedFile)): ?>
+        <div class="result-preview">
+            <h3>Resultado:</h3>
+            <div class="image-comparison">
+                <div>
+                    <h4>Original:</h4>
+                    <img src="<?php echo htmlspecialchars($uploadFile); ?>" alt="Original">
+                </div>
+                <div>
+                    <h4>Processado:</h4>
+                    <img src="<?php echo htmlspecialchars($processedFile); ?>" alt="Processado">
+                </div>
+            </div>
+        </div>
+    <?php endif; ?>
+</div>
diff --git a/style.css b/style.css
index 4eb5acf..2723ee2 100644
--- a/style.css
+++ b/style.css
@@ -209,3 +209,50 @@ textarea {
 #search-button:hover {
     background-color: #0056b3;
 }
+
+/* Estilos para processamento de documentos */
+.upload-form {
+    max-width: 600px;
+    margin: 20px auto;
+    padding: 20px;
+    background: #f5f5f5;
+    border-radius: 5px;
+}
+
+.result-preview {
+    margin-top: 30px;
+}
+
+.image-comparison {
+    display: flex;
+    justify-content: space-around;
+    margin-top: 20px;
+    flex-wrap: wrap;
+}
+
+.image-comparison img {
+    max-width: 45%;
+    height: auto;
+    margin: 10px;
+    border: 1px solid #ddd;
+    box-shadow: 0 0 5px rgba(0,0,0,0.2);
+}
+
+.alert {
+    padding: 15px;
+    margin-bottom: 20px;
+    border: 1px solid transparent;
+    border-radius: 4px;
+}
+
+.alert-success {
+    color: #155724;
+    background-color: #d4edda;
+    border-color: #c3e6cb;
+}
+
+.alert-error {
+    color: #721c24;
+    background-color: #f8d7da;
+    border-color: #f5c6cb;
+}