I am the assigned ART-ART reviewer for this draft.

Summary:

This document is basically ready for publication but has nits that should be considered prior to publication.

Nits:

Section 3
Page 7
s/server operators that provides/server operators that provide

Page 8
s/each image objects/each image object

Section 4.1 
Page 12
s/is outside the scope of this document/are outside the scope of this document.

Section 7
Page 18 
s/many commons image formats/many common image formats

s/The table also indicates the support
   requirements these image formats.
  /The table also indicates the support
   requirements of these image formats.

Section 9
Page 20
s/not the of binary format if
  the image or audio.
 /not the binary format of
  the image or audio.