Zend certified PHP/Magento developer

ImageMagick display WxH+x+y window

In ImageMagick’s display, if I press ‘c’ and start to drag a crop frame, a small box appears at top left showing WxH+x+y for the crop frame.

Is there any way that data can be accessed programmatically in bash, other than taking a screenshot and running tesseract-ocr or the like on the image?