Codeigniter Method for Intelligent Picture Clipping

  • 2021-06-29 10:27:02
  • OfStack

1 pair of 1024*768 pictures, cut to 240*240 size, without distortion, keep the theme meaning as much as possible.

The method I use:

1. First, abbreviate the pictures to the size that can be clipped;

If the picture is wide, zoom to Height= 240px in equal proportion to Height, and zoom to Width in equal proportion to Narrow Picture (Height is larger than Width);

2. Centrally cut in length and width format;

Keep the middle part of the thumbnailed picture;


$this->load->library('image_lib');            
    list($width, $height) = getimagesize("upload/123.jpg");
    $config['image_library'] = 'gd2';
    $config['source_image'] = 'upload/123.jpg';
    $config['maintain_ratio'] = TRUE;
    if($width >= $height)
    {
        $config['master_dim'] = 'height';
    }else{
        $config['master_dim'] = 'width';
    }
    $config['width'] = 240;
    $config['height'] = 240;
    $this->image_lib->initialize($config);
    $this->image_lib->resize();

    $config['maintain_ratio'] = FALSE;
    if($width >= $height)
    {
        $config['x_axis'] = floor(($width * 240 / $height - 240)/2);
    }else{
        $config['y_axis'] = floor(($height * 240 / $width - 240)/2);
    }
    $this->image_lib->initialize($config);
    $this->image_lib->crop();


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