| 摘要 |
<p>The purpose of the invention is to conveniently retrieve an object requested by a user by means of a spoken dialog, by obtaining the required object named in the spoken dialog, from an image acquired within a space. When a speech recognition event requesting retrieval of an object occurs, a key image related to a keyword in the request is extracted from an image database (136). If the number of extractions is 0, speech prompting for repetition is output from a speaker section (16). If the number of extractions is 1 or more, an image or images having a high degree of similarity to the key image are extracted from an image photographed by an environmentally installed camera. If the number of image extractions is 0, speech indicating that the corresponding object does not exist is output from the speaker section (16). If the number of retrieved images is 2 or more, speech indicating a search refinement query is output from the speaker section (16), and search refinement is performed. If no search refinement method results from the query, or if the number of retrieved images is 1, a location is identified from the retrieved image group, and speech that describes the location is output from the speaker section (16).</p> |
