¹³“Once you know which regions of an image are interesting, you can use the output of a saliency request as the input to another Vision request, like text recognition. The bounding boxes from saliency requests also help you localize the regions you’d like to search, so you can prioritize recognition on the most salient parts of an image, like signs or posters.” Source: https://developer.apple.com/documentation/vision/cropping_images_using_saliency