如何获取地址簿图像数据的裁剪框？

The AddressBook framework provides ABPersonCopyImageData for getting the contact image for each address book entry. This is great for the image data, but the user also sizes and crops the image for framing purposes. When I get the image data, I get the full image, and not the cropped image. How do I get the frame the user used to crop the image (or in lieu of that, how do I get access to the cropped image/data)?The AddressBook framework provides ABPersonCopy