Imagick photo multiple image resize crop without distorting /stretching php - imagick

Question

I wish to keep the aspect ratio of images as I resize them. I got 94 000 images I need to display as preview images on a social site. The challenge I got is some users uploaded full length photos as a result they appear stretched after re-sizing. I am using codeigniter to implement this. The file names are in a database table. This is the code I am using
if (file_exists($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles /purchased_profiles/".$images_->_file_name)) {
//echo "The file $filename exists";
$thumb = new Imagick();
$thumb->readImage($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles/purchased_profiles/".$images_->_file_name);
$orientation = $thumb->getImageOrientation();
switch($orientation) {
case imagick::ORIENTATION_BOTTOMRIGHT:
$thumb->rotateimage("#000", 180); // rotate 180 degrees
break;
case imagick::ORIENTATION_RIGHTTOP:
$thumb->rotateimage("#000", 90); // rotate 90 degrees CW
break;
case imagick::ORIENTATION_LEFTBOTTOM:
$thumb->rotateimage("#000", -90); // rotate 90 degrees CCW
break;
}
$thumb->resizeImage(160,160,Imagick::FILTER_LANCZOS,1);
$thumb->writeImage($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles/purchased_profiles/160x160/".$images_->_file_name);
$thumb->clear();
$thumb->destroy();
}

Answer 1

If the images are uploaded with different sizes its a real challenge If I am to combine the solution found here how do i use imagick in php? (resize & crop) and your code I may come up with the following
if (file_exists($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles/purchased_profiles/".$images_->_file_name)) {
$thumb = new Imagick();
$thumb->readImage($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles/purchased_profiles/".$images_->_file_name);
$orientation = $thumb->getImageOrientation();
switch($orientation) {
case imagick::ORIENTATION_BOTTOMRIGHT:
$thumb->rotateimage("#000", 180); // rotate 180 degrees
break;
case imagick::ORIENTATION_RIGHTTOP:
$thumb->rotateimage("#000", 90); // rotate 90 degrees CW
break;
case imagick::ORIENTATION_LEFTBOTTOM:
$thumb->rotateimage("#000", -90); // rotate 90 degrees CCW
break;
}
//now check the width
$width=$thumb->getImageWidth();
//now check height
$height=$thumb->getImageHeight();
if ($height>$width) {
$new_height=160;
$new_width=(int)($width/$height*160);
$thumb->resizeImage($new_width,$new_height,Imagick::FILTER_LANCZOS,1);
$cropWidth = $thumb->getImageWidth();
$cropHeight = $thumb->getImageHeight();
$cropZoom=1;
if ($cropZoom) {
$newWidth = $cropWidth / 2;
$newHeight = $cropHeight / 2;
$thumb->cropimage(
$new_width,
$new_width,
0,
0
);
}
}
elseif ($width>$height) {
# code...
$new_width=160;
$new_height=(int)($height/$width*160);
$thumb->resizeImage($new_width,$new_height,Imagick::FILTER_LANCZOS,1);
}
else{
$thumb->resizeImage(160,160,Imagick::FILTER_LANCZOS,1);
}
$thumb->writeImage($_SERVER["DOCUMENT_ROOT"]."/uploads/profiles/purchased_profiles/160x160/".$images_->_file_name);
$thumb->clear();
$thumb->destroy(); }
You may need to crop if the image height is greater than the width so I decided to crop with dimensions equal to the width from the to left corner most likely you wont miss the face of the person this way. Good luck