Square rectangular images and center as much as possible using ImageIO and imgscalr in Scala. Save output as new jpg.

makeSquare.scala

import org.imgscalr._
import java.io.File
import javax.imageio.ImageIO

object makeSqaure extends App {
  
  def makeSquare(img: java.awt.image.BufferedImage): java.awt.image.BufferedImage = {
      val w = img.getWidth
      val h = img.getHeight
      val dim = List(w, h).min
      
      img match {
    	  case x if w == h => img
    	  case x if w > h => Scalr.crop(img, (w-h)/2, 0, dim, dim)
    	  case x if w < h => Scalr.crop(img, 0, (h-w)/2, dim, dim)
      }
    }
  
  val myimg = ImageIO.read(new File("data/images/train/20.jpg"))
  val myimgSquare = makeSquare(myimg)
  ImageIO.write(myimgSquare, "jpg", new File("20square.jpg"))
  
}