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Without more specific context or an exact phrase, the word "feature" is much more likely to be a superordinate(or HYPERnym).

In Semantics, HYPOnym is the more specific term, the superordinate/hypernym is the generic term....

In English, "feature" is quite a generic term by its very nature. In the context given above (in reference to images) its more likely that "feature" is a superordinate for colour, shape, texture, spatial layout, objects etc .... i.e. "features" of an image(s).

The following link is very detailed and shows "feature" as a noun and verb, including most if not all its senses, along with its hyponym and hypernym possibilities. This should be enough to help you decide in your specific context.
Link:
http://www.audioenglish.net/dictionary/feature.htm

Also note: with verbs, the more specific verbs are called troponyms of the more generalized verb.

Hyponym is a member of class of words:
http://grammar.about.com/od/tz/g/wordclassterm.htm

"To feature" means "to include someone or something as an important part":
1. This documentary film features Margaret Thatcher as a good mother.
2. This week's broadcast features a report on US preparations for the next war.
3. It's a world famous British popular music store, the logo of which features a dog and a gramophone.
You, probably, should pay attention to the third example sentence.

A hyponym "Subordinate" could be either - a noun, or an adjective.

You, most likely, want to know how to construct a sentence with subordinate clause using "feature" as a verb in this clause (?).
http://www.chompchomp.com/terms/subordinateclause.htm


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Note added at 1 day6 hrs (2012-01-23 19:53:04 GMT)
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Sorry, my eyes must have been blurred, I read "subordinate" instead of "superordinate". Here you are:
"Hyponym" is a member of class of words;
"Superordinate" is a thing that represents a superior order or category within a system of classification ("bird" is the superordinate of "canary.")

1. Hyponym "feature" (and, in order to talk about the subject we shoud take the word in its mother-form) beongs to the class "visual" ;
2."Visual" is a superordinate of "feature", "image", "picture", "symbol", ...subsequenty "feature" is a "subordinate" of "visual".
"Superordinate" or "subordinate" is a "rank" of hyponym in open class.
So, your question sounds:"Is it Sun, or it Moon?"