How to display item photo in atom feed?

I want to display a photo for each item in atom feed. I used this structure for my entry

<entry>
    <title>TITLE</title>
    <link href="http://page" />
    <id>http://page</id>
    <updated>DATE</updated>
    <summary>DESCRIPTION</summary>
    <content type="image/jpg" 
    src="http://image" />
</entry>

but when adding the feed in Google Reader, it will not display images. What is the best way to do so?

Solution

For Atom or RSS you need to enable hotlinking to your files for Google Reader to read them, as decribed at:

“HowTo: Allow Google Reader Access To Hotlink-Protected Images”
^{By JP Habaradas on April 27, 2009}

Also, you may want to link this question to https://webmasters.stackexchange.com/ as you will need to make .htaccess modification and have Apache Rewrites enabled and configured.