Use JSON API to Retrieve Alternate Product Image Sizes? Medium Product Image Size? Thumbnail? by Zach Doe

In the Liquid template system, you can output specific product image sizes.
For example, the following outputs the medium image url:

{{ product.images[0] | product_img_url: 'medium' }}

When using the JSON API to retrieve products, the image and images properties seem to contain only one image url, which is the full-size image:

"image":{  "created_at":"XXX","id":XXX,"position":1,"product_id":XXX,"updated_at":"XXX","src":"XXX","variant_ids":[  

            ]
         }

Is it possible to access the smaller image sizes using the JSON API? I would like to display the medium-size images in my app, not the full-size.

The sizes available in Liquid are listed here: http://docs.shopify.com/themes/liquid-documentation/filters/url-filters#product_img_url

Thanks!