New addon "tesseract" for OCR

tesseract/tesseract.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Name: Tesseract OCR
+ * Description: Use OCR to get text from images
+ * Version: 0.1
+ * Author: Michael Vogel <http://pirati.ca/profile/heluecht>
+ */
+
+use Friendica\Core\Hook;
+use Friendica\Core\Logger;
+use Friendica\Core\System;
+use thiagoalessio\TesseractOCR\TesseractOCR;
+
+require_once __DIR__ . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
+
+function tesseract_install()
+{
+	Hook::register('ocr-detection', __FILE__, 'tesseract_ocr_detection');
+
+	Logger::notice('installed tesseract');
+}
+
+function tesseract_ocr_detection(&$media)
+{
+	$ocr = new TesseractOCR();
+	try {
+		$ocr->tempDir(System::getTempPath());
+		$ocr->imageData($media['img_str'], strlen($media['img_str']));
+		$media['description'] = $ocr->run();
+	} catch (\Throwable $th) {
+		Logger::info('Error calling TesseractOCR', ['message' => $th->getMessage()]);
+	}			
+}