Development of presentation slide retrieval system based on visual information

Sharing and reusing knowledge in presentation form is very important because more and more presentations are made and accumulated in many companies. However, most of existing presentation slide retrieval systems are document file unit searches, which deal with only text information. Therefore, it is difficult to search enough reusable slides comprehensively when users don't memorize clear text information about necessary slides. The objective of this research is to develop a slide retrieval system which can comprehensively search slides necessary for presentation creation in a short time. First, Presentations are decomposed into slides. A Uniform Resource Identifier (URI) is assigned for each slide and managed in metadata repository in order to search across databases. Second, relevant slides can be retrieved based on the similarly of text or visual image such as colors and shapes so as to search enough slide candidates for a reusable slide. Third, a retrieval function based on the handwritten sketch is developed in order to search based only on visual memory. In case study, the effectiveness of each function is illustrated. In addition, it is illustrated that this system reduces the time to make a presentation by 19.7%.