Estiliza pagina de upload externo - responsiva (novo47)

document_processor.php

@@ -0,0 +1,144 @@
+<?php
+require_once 'vendor/autoload.php';
+
+class DocumentProcessor {
+    private $srcImage;
+    private $processedImage;
+    private $outputPath;
+    
+    public function __construct() {
+        if (!extension_loaded('opencv')) {
+            throw new Exception('OpenCV PHP extension is required');
+        }
+    }
+
+    public function processDocument($imagePath, $outputPath) {
+        $this->outputPath = $outputPath;
+        
+        // Carrega a imagem
+        $this->srcImage = cv\imread($imagePath);
+        if ($this->srcImage === null) {
+            throw new Exception('Failed to load image');
+        }
+
+        // Pipeline de processamento
+        $this->detectDocument()
+             ->correctPerspective()
+             ->enhanceImage()
+             ->saveResult();
+
+        return $this->outputPath;
+    }
+
+    private function detectDocument() {
+        // Converte para escala de cinza
+        $gray = cv\cvtColor($this->srcImage, cv\COLOR_BGR2GRAY);
+        
+        // Aplica blur para reduzir ruído
+        $blur = new cv\Mat();
+        cv\GaussianBlur($gray, $blur, new cv\Size(5, 5), 0);
+        
+        // Detecta bordas
+        $edges = new cv\Mat();
+        cv\Canny($blur, $edges, 75, 200);
+        
+        // Encontra contornos
+        $contours = [];
+        $hierarchy = new cv\Mat();
+        cv\findContours($edges, $contours, $hierarchy, cv\RETR_LIST, cv\CHAIN_APPROX_SIMPLE);
+        
+        // Ordena contornos por área
+        usort($contours, function($a, $b) {
+            return cv\contourArea($b) - cv\contourArea($a);
+        });
+
+        // Procura o contorno mais próximo de um documento
+        foreach ($contours as $contour) {
+            $peri = cv\arcLength($contour, true);
+            $approx = cv\approxPolyDP($contour, 0.02 * $peri, true);
+            
+            if (count($approx) == 4) {
+                $this->documentContour = $approx;
+                break;
+            }
+        }
+
+        return $this;
+    }
+
+    private function correctPerspective() {
+        if (!isset($this->documentContour)) {
+            return $this;
+        }
+
+        // Ordena os pontos para perspectiva
+        $points = $this->orderPoints($this->documentContour);
+        
+        // Calcula dimensões do documento
+        $width = max(
+            sqrt(pow($points[1][0] - $points[0][0], 2) + pow($points[1][1] - $points[0][1], 2)),
+            sqrt(pow($points[3][0] - $points[2][0], 2) + pow($points[3][1] - $points[2][1], 2))
+        );
+        
+        $height = max(
+            sqrt(pow($points[2][0] - $points[1][0], 2) + pow($points[2][1] - $points[1][1], 2)),
+            sqrt(pow($points[3][0] - $points[0][0], 2) + pow($points[3][1] - $points[0][1], 2))
+        );
+
+        // Define pontos de destino
+        $dst = cv\Mat::zeros([4, 2], CV_32F);
+        $dst[0] = [0, 0];
+        $dst[1] = [$width - 1, 0];
+        $dst[2] = [$width - 1, $height - 1];
+        $dst[3] = [0, $height - 1];
+
+        // Aplica transformação de perspectiva
+        $matrix = cv\getPerspectiveTransform($points, $dst);
+        $this->processedImage = cv\warpPerspective($this->srcImage, $matrix, [$width, $height]);
+
+        return $this;
+    }
+
+    private function enhanceImage() {
+        if (!isset($this->processedImage)) {
+            $this->processedImage = $this->srcImage;
+        }
+
+        // Converte para LAB para melhor processamento
+        $lab = cv\cvtColor($this->processedImage, cv\COLOR_BGR2LAB);
+        $l_channel = cv\split($lab)[0];
+        
+        // Aplica CLAHE para melhorar contraste
+        $clahe = cv\createCLAHE(3.0, [8, 8]);
+        $cl = $clahe->apply($l_channel);
+        
+        // Reconstrói imagem
+        $limg = cv\merge([$cl, cv\split($lab)[1], cv\split($lab)[2]]);
+        $this->processedImage = cv\cvtColor($limg, cv\COLOR_LAB2BGR);
+
+        return $this;
+    }
+
+    private function saveResult() {
+        if (!isset($this->processedImage)) {
+            throw new Exception('No processed image to save');
+        }
+
+        cv\imwrite($this->outputPath, $this->processedImage);
+        return $this;
+    }
+
+    private function orderPoints($pts) {
+        // Ordena pontos para transformação de perspectiva
+        $rect = array_fill(0, 4, [0, 0]);
+        $s = array_map(function($p) { return $p[0] + $p[1]; }, $pts);
+        $d = array_map(function($p) { return $p[0] - $p[1]; }, $pts);
+        
+        $rect[0] = $pts[array_search(min($s), $s)]; // top-left
+        $rect[2] = $pts[array_search(max($s), $s)]; // bottom-right
+        $rect[1] = $pts[array_search(min($d), $d)]; // top-right
+        $rect[3] = $pts[array_search(max($d), $d)]; // bottom-left
+        
+        return $rect;
+    }
+}