Abstract: Smartphones have become a powerful assistant to modern people in terms of taking pictures on the scenarios of conference, seminar and representation, but obtaining information based on these images is discrete, discontinuous, and easily interrupted. Therefore, a method of generating PPTs from mobile pictures is in urgent need, via which we can effectively browse the core content. The paper presents a PPT generation method from the mobile images taken on the scenario of meeting, seminar and representation, including effective region extraction, content area reprojection and content area completion. The effective region is extracted by using the morphological operation with large kernel, highlighting the difference between the content area and the background area, convenient for extracting the effective content area. Based on the corner constraint, the content area is virtually reprojected for generating the regular rectangular area. The content area completion is to remove the obstacles within the content area. In experiments of a variety of scenarios, the proposed method could effectively generate PPT from the images of conference, seminar and presentation.

Key words:  PPT generation, valid content region, reprojection