The draft doesn't define at all what detection does

[smaug----]

It doesn't link to other spec nor does it define itself what is supposed to happen when one calls detect()

[yellowdoge]

It says here:

In object-class detection "the task is to find the locations and sizes of all objects in an image that belong to a given class. Examples include upper torsos, pedestrians, and cars." [wikipedia] . Face detection, on the other hand,

In case it's unclear, I've rewritten it so that it's more evident what the paragraph is about.

[yellowdoge]

Will close this issue, please reopen if necessary.