Resizing a captured image?

I'm trying to make a program that captures an image from the webcam, then reloads the captured image in different places on the screen. I'll do more with it later, but I want to iron this problem out before I do any more. My problem is that I want to resize the image that I capture from the webcam when it loads into the program, but it justs crops the image. Is there any way to solve this? My current code is as follows:

import processing.video.*;

Capture cam;

PImage still;

void setup() {
  //window size
  size(1280, 720, P3D);
  noCursor();
  //webcam feed
  still = loadImage ("capture.jpg");
  imageMode (CENTER);

  String[] cameras = Capture.list();

  //webcam feed
  if (cameras.length == 0) {
    println("There are no cameras available for capture.");
    exit();
  } else {
    println("Available cameras:");
    for (int i = 0; i < cameras.length; i++) {
      println(cameras[i]);
    }

    cam = new Capture(this, cameras[0]);
    cam.start();
  }
}

void draw() {
  if (cam.available() == true) {
    cam.read();
  }
  //web cam feed position, size
  image(cam, 640, 360, 320, 180);
}

void mousePressed() {
  //image capture
  saveFrame("data/capture.jpg");
  cam.read();

  //loads image capture in
  image (still, 200, 200, 160, 90);
}