We have a tag image and a tag image-processing. Their descriptions are quite similar:
This tag covers signal processing where input is an image, such as a photograph or video frame and the output could be an improved or altered image, parameters related to the image or information about features within the image.
and
In general, image processing is any form of signal processing for which the input is an image, such as a photograph or video frame.
Do we want to disambiguate these tags, or do we want to make them synonyms?