uploadify上传之后,缩略图显示失真,请问是否还有哪些我没有设置的才会失真？我原图是1024*768，等比例压缩之后还是失真很严重

//微缩图处理
$imgPath = C('UPLOAD_PATH').$info['Filedata']['savepath'].$info['Filedata']['savename'];
$image = new Image();
$image->open($imgPath);
$imgWidth = $image->width();
$imgHeight = $image->height();

$imgWidth = $imgWidth/180;
$imgHeight = ceil($imgHeight/$imgWidth);

$thumbPath = C('UPLOAD_PATH').$info['Filedata']['savepath'].'180_'.$info['Filedata']['savename'];
$image->thumb(180,$imgHeight,IMAGE::IMAGE_THUMB_CENTER)->save($thumbPath);
echo $thumbPath;

120150723103849.jpg ( 88.96 KB 下载：15 次 )