e edited.
Here is one example:

One strategy to evaluate such a model is to measure the consistency of the change between the two images (in CLIP space) with the change between the two image captions (as shown in CLIP-Guided Domain Adaptation of Image Generators). This is referred to as the ”CLIP directional similarity“.
Caption 1 corresponds to the input image (image 1) that is to be edited.
Caption 2 corresponds to the edited image (image 2).