feat: new example for custom usage for object detection

Author: CodeWithKyrian

examples/pipelines/custom-object-detection.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Codewithkyrian\Transformers\Pipelines;
+
+use Codewithkyrian\Transformers\Models\Auto\AutoModel;
+use Codewithkyrian\Transformers\Processors\AutoProcessor;
+use Codewithkyrian\Transformers\Utils\Image;
+
+require_once './bootstrap.php';
+
+ini_set('memory_limit', '-1');
+
+$processor = AutoProcessor::fromPretrained('Xenova/yolov9-c_all');
+$model = AutoModel::fromPretrained('Xenova/yolov9-c_all');
+
+$image = Image::read(__DIR__.'/../images/corgi.jpg');
+
+$inputs = $processor($image);
+
+['outputs' => $outputs] = $model($inputs);
+
+$boxes = array_map(function ($args) use ($inputs, $model): ?array {
+    [$xmin, $ymin, $xmax, $ymax, $score, $id] = $args;
+
+    if ($score < 0.11) return null;
+
+    return [
+        'xmin' => $xmin,
+        'ymin' => $ymin,
+        'xmax' => $xmax,
+        'ymax' => $ymax,
+        'score' => $score,
+        'label' => $model->config['id2label'][$id] ?? 'unknown',
+    ];
+}, $outputs->toArray());
+
+$boxes = array_filter($boxes);
+
+foreach ($boxes as $box) {
+    $image->drawRectangle(
+        xMin: (int)$box['xmin'],
+        yMin: (int)$box['ymin'],
+        xMax: (int)$box['xmax'],
+        yMax: (int)$box['ymax'],
+        color: '0099FF',
+        thickness: 2
+    );
+    $image->drawText(
+        text: $box['label'],
+        xPos: (int)$box['xmin'],
+        yPos: (int)max($box['ymin'] - 5, 0),
+        fontFile: '/Users/Kyrian/Library/Fonts/JosefinSans-Bold.ttf',
+        fontSize: 14,
+        color: '0099FF'
+    );
+}
+
+$image->save(__DIR__.'/../images/corgi-detected.jpg');