Removing noise on an image using php?

Question

PHP

Hello. Wrote a function to remove noise from an image.

function removeNoise($image)
{
  $width = imagesx($image);
  $height = imagesy($image);
 
  $result = imagecreatetruecolor($width, $height);
  $white = imagecolorallocate($result, 255, 255, 255);
  imagefilledrectangle($result, 0, 0, $width + 1, $height, $white);
 
  for($x = 1; $x <= $width; $x++)
  {                              
    for($y = 1; $y <= $height; $y++)
    {                              
                               
      $count = countAroundPixels($image, $x, $y);
 
      if ($count > 4)
      {
                                       
        $color = imagecolorallocate($result, 0, 0, 0);
        imagesetpixel($result, $x, $y, $color);
 
      }

    }
  }
 
  return $result;
 
}

The result can be seen in the attached file. As you can see, the result is not important. "Bite off" part of the numbers. Maybe there are ways to improve the cleaning algorithm?
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Answer 1

I don’t understand why puffy is here, but on specific examples, an elementary median filter would perfectly solve the problem!