Imagemagick抗锯齿文字

Question

photoshop具有很强的抗锯齿文字效果。

虽然imagemagick有反别名选项。但是，没有像photoshop这样的抗混叠类型。

有什么办法可以用imagemagick获得类似的强烈的反别名文本效果？

Answer 1

这不是一个完美的解决方案（我只是自己学习），但它会让你接近：你可以打印更大的文本，并添加一个任意大小的笔划，然后缩小。示例代码：

$template_file= "blank.png"; // a transparent png 
$template_blob = file_get_contents($template_file); 
$width = 100; 
$height = 50; 
$mult = 6; 
$template = new imagick(); 
$template->readImageBlob($template_blob); 
$template->setImageDepth(8); 
$template->setCompressionQuality(100); 
$template->setCompression(Imagick::COMPRESSION_NO); 
$template->setImageFormat("png"); 


$points = array( 
    $mult, //scale by which you enlarge it 
    0 //# rotate 
); 

$template->distortImage(imagick::DISTORTION_SCALEROTATETRANSLATE, $points, TRUE); 

$color = '#000000'; 

$draw = new ImagickDraw(); 
$pixel = new ImagickPixel('none'); 
$draw->setFont('Arial.ttf'); 
$draw->setFontSize($font_size*$mult); 
$draw->setFillColor($color); 
$draw->setStrokeColor($color); 
$draw->setStrokeWidth(1); 
$draw->setStrokeAntialias(true); 
$draw->setTextAntialias(true); 
$draw->settextkerning($mult); // adjust the kerning if you like 

$template->annotateImage($draw, $x_indent, $y_indent, $some_angle, $text); 

$points = array( 
    1/$mult, // set it back to the original scale 
    0 // rotate 
); 

$template->distortImage(imagick::DISTORTION_SCALEROTATETRANSLATE, $points, TRUE); 

//Do something with the $template here like: 
$template->writeImage("test.png"); 

$template->clear(); 
$template->destroy(); 
$draw->clear(); 
$draw->destroy();