10. An apparatus, comprising: a memory; and a processor operatively coupled to the memory and configured to: receive a speech input; generate at least two speech recognition candidates from the speech input; observe a scene related to the speech input using one or more non-acoustic sensors; segment the observed scene into a plurality of regions, wherein each of the regions corresponds to an object or a surface in the observed scene; compute properties for at least a given region of the plurality of regions, wherein the computation of the properties for the given region comprises a computation of one or more characteristics for the given region a computation of one or more relationships between the given region and remaining ones of the plurality of regions, and wherein the one or more characteristics of the given region comprise a color, a shape and a textual label; and select one of the speech recognition candidates based at least in part on the computed properties of the given region.
10. An apparatus, comprising: a memory; and a processor operatively coupled to the memory and configured to: receive a speech input; generate at least two speech recognition candidates from the speech input; observe a scene related to the speech input using one or more non-acoustic sensors; segment the observed scene into a plurality of regions, wherein each of the regions corresponds to an object or a surface in the observed scene; compute properties for at least a given region of the plurality of regions, wherein the computation of the properties for the given region comprises a computation of one or more characteristics for the given region a computation of one or more relationships between the given region and remaining ones of the plurality of regions, and wherein the one or more characteristics of the given region comprise a color, a shape and a textual label; and select one of the speech recognition candidates based at least in part on the computed properties of the given region. 11. The apparatus of claim 10 , wherein each speech recognition candidate comprises one of a word and a phrase.