Segmentação de vídeos para storytelling interativo baseado em vídeo

• Autor(a) principal: Schetinger, Victor Chitolina
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Manancial - Repositório Digital da UFSM
• Texto Completo: http://repositorio.ufsm.br/handle/1/5415
• topic: Segmentação de vídeos; Visão computacional; Alpha matting; Processamento de vídeos; Storytelling; Logtell; Video segmentation; Computer vision; Video-based interactive storytelling; Alpha matting; CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO

Video-based interactive storytelling has as its main goal the generation of interactive narratives, allowing users to control the course of the story and using cinematographic compositions to dramatize it. For this process to be possible, there is a need for large amounts of cinematographic content in the form of filmed scenes. This content, on the other hand, has to be properly pre-processed in order to be usable. This work proposes an approach for video segmentation aimed for video-based interactive storytelling, using alpha matting to extract color and transparency of video elements to be later recomposed for dramatization purposes. The developed solution uses background subtraction and energy minimization techniques to automatically generate trimaps.