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2022-10-06 22:04:13 +02:00
commit 4bc486fd92
487 changed files with 19040 additions and 0 deletions
@@ -0,0 +1,105 @@
+<?php
+
+    // ini_set('memory_limit', '256M');
+    
+    class imagediff
+    {
+        private $image1;
+        private $image2;
+        
+        function  __construct($img1, $img2)
+        {
+            $this->image1['path'] = realpath($img1);
+            $this->image2['path'] = realpath($img2);
+            if($this->image1['path'] === false || $this->image2['path'] === false)
+            {
+                throw new Exception('Image "'.htmlspecialchars( $this->image1 ? $img2 : $img1 ).'" not found!');
+            }
+            else
+            {
+                $this->image1['type'] = $this->imagetyte($this->image1['path']);
+                $this->image2['type'] = $this->imagetyte($this->image2['path']);
+            }
+        }
+
+        private function imagetyte($imgname)
+        {
+            $file_info = pathinfo($imgname);
+            if(!empty ($file_info['extension']))
+            {
+                $filetype = strtolower($file_info['extension']);
+                $filetype = $filetype == 'jpg' ? 'jpeg' : $filetype;
+                $func = 'imagecreatefrom' . $filetype;
+                if(function_exists($func))
+                {
+                    return $filetype;
+                }
+                else
+                {
+                    throw new Exception('File type "'.htmlspecialchars( $filetype ).'" not supported!');
+                }
+            }
+            else
+            {
+                throw new Exception('File type not supported!');
+            }
+        }
+
+        private function imagehex($image)
+        {
+            $size = getimagesize($image['path']);
+            
+			
+			
+			list( $srcWidth, $srcHeight, $type ) = getimagesize( $image['path'] );
+		if( $type == IMAGETYPE_JPEG ) {
+			$extension = 'jpeg';
+		} else if( $type == IMAGETYPE_GIF ) {
+			$extension = 'gif';
+		} else if( $type == IMAGETYPE_PNG ) {
+			$extension = 'png';
+		} 
+		
+			$func = 'imagecreatefrom'.$extension;
+            $imageres = $func($image['path']);
+            $zone = imagecreate(20, 20);
+            imagecopyresized($zone, $imageres, 0, 0, 0, 0, 20, 20, $size[0], $size[1]);
+            $colormap = array();
+            $average = 0;
+            $result = array();
+            for($x=0; $x<20; $x++)
+            {
+                for($y=0; $y<20; $y++)
+                {
+                    $color = imagecolorat($zone, $x, $y);
+		 
+                    $color = imagecolorsforindex($zone, $color);
+	 
+                    $colormap[$x][$y]= 0.212671 * $color['red'] + 0.715160 * $color['green'] + 0.072169 * $color['blue'];
+                    $average += $colormap[$x][$y];
+                }
+            }
+            $average /= 400;
+            for($x=0; $x<20; $x++)
+            {
+                for($y=0; $y<20; $y++)
+                {
+                    $result[]=($x<10?$x:chr($x+97)) . ($y<10?$y:chr($y+97)) . round(2*$colormap[$x][$y]/$average);
+                }
+            }
+            return $result;
+        }
+
+        public function diff()
+        {
+            $hex1 = $this->imagehex($this->image1) ;
+            $hex2 = $this->imagehex($this->image2);
+            $result=(count($hex1) + count($hex2)) - count(array_diff($hex2,$hex1))-400; 
+	    return $result / ( ( count($hex1) + count($hex2) ) / 2 );
+        }
+    }
+
+    //$diff = new imagediff('lol1.png', 'lol.png');
+    //print ($diff->diff() * 100 ).'%';
+
+?>