Marina Atsumi Oikawa

Pós-doutorado

Formação complementar

Idiomas

Áreas de atuação

Participação em eventos

Participação em bancas

Produções bibliográficas

• OIKAWA, MARINA A. ; DIAS, Zanoni ; ROCHA, ANDERSON ; GOLDENSTEIN, Siome . Distances in multimedia phylogeny. International Transactions in Operational Research , v. 23, p. 921-946, 2016.

• MARMEROLA, GUILHERME D. ; OIKAWA, MARINA A. ; DIAS, Zanoni ; GOLDENSTEIN, Siome ; ROCHA, ANDERSON . On the Reconstruction of Text Phylogeny Trees: Evaluation and Analysis of Textual Relationships. Plos One , v. 11, p. e0167822, 2016.

• OIKAWA, M. A. ; DIAS, Zanoni ; ROCHA, Anderson ; GOLDENSTEIN, Siome . Manifold Learning and Spectral Clustering for Image Phylogeny Forests. IEEE Transactions on Information Forensics and Security , v. 11, p. 5-18, 2016.

• DE O. COSTA, FILIPE ; OIKAWA, MARINA A. ; DIAS, Zanoni ; GOLDENSTEIN, Siome ; ROCHA, ANDERSON . Image Phylogeny Forests Reconstruction. IEEE Transactions on Information Forensics and Security , v. 9, p. 1-1, 2014.

• OIKAWA, Marina Atsumi ; TAKETOMI, Takafumi ; YAMAMOTO, Goshiro ; FUJISAWA, Makoto ; AMANO, Toshiyuki ; MIYAZAKI, Jun ; KATO, Hirokazu . A model-based tracking framework for textureless 3D rigid curved objects. SBC Journal on 3D Interactive Systems , v. 3, p. 2-15, 2012.

• KUMAGAI, Kenzo ; OIKAWA, Marina Atsumi ; TAKETOMI, Takafumi ; YAMAMOTO, Goshiro ; MIYAZAKI, Jun ; KATO, Hirokazu . Robust model-based tracking considering changes in the measurable DoF of the target object. In: 21st International Conference on Pattern Recognition (ICPR 2012), 2012, Tsukuba. Proceedings of The 21st International Conference on Pattern Recognition (ICPR 2012), 2012. p. 2157-2160.

• ALMEIDA, Igor de Souza ; OIKAWA, Marina Atsumi ; CARRES, JORDI POLO ; MIYAZAKI, Jun ; KATO, Hirokazu ; BILLINGHURST, Mark . AR-based Video-Mediated Communication: A Social Presence Enhancing Experience. In: 2012 14th Symposium on Virtual and Augmented Reality (SVR), 2012, Rio de Janiero. 2012 14th Symposium on Virtual and Augmented Reality. p. 125-130.

• OIKAWA, Marina Atsumi ; TAKETOMI, Takafumi ; YAMAMOTO, Goshiro ; FUJISAWA, Makoto ; AMANO, Toshiyuki ; MIYAZAKI, Jun ; KATO, Hirokazu . Local Quadrics Surface Approximation for Real-Time Tracking of Textureless 3D Rigid Curved Objects. In: 2012 14th Symposium on Virtual and Augmented Reality (SVR), 2012, Rio de Janiero. 2012 14th Symposium on Virtual and Augmented Reality. p. 246-253.

• OIKAWA, Marina Atsumi ; YAMAMOTO, Goshiro ; FUJISAWA, Makoto ; AMANO, Toshiyuki ; MIYAZAKI, Jun ; KATO, Hirokazu . Quantitative Evaluation Method for Model-based Tracking of 3D Rigid Curved Objects.. In: The 2nd International Workshop on AR/MR Registration, Tracking and Benchmarking, 2011, Basel. Proceedings of The 2nd International Workshop on AR/MR Registration, Tracking and Benchmarking, 2011.

• ALMEIDA, Igor de Souza ; POLO, Jordi Carres ; OIKAWA, Marina Atsumi ; HIRAMATSU, Tatsuya ; AMANO, Toshiyuki ; FUJISAWA, Makoto ; BILLINGHURST, Mark ; KATO, Hirokazu . HANDY: Enhancing Social Presence in Video-chat Systems. In: 16th Research Meeting of the SIG-Entertainment Computing, 2010, Kyoto. Proceedings of The 16th Research Meeting of the SIG-Entertainment Computing, 2010.

• MEIGUINS, Bianchi Serique ; ALMEIDA, Igor de Souza ; OIKAWA, Marina Atsumi . Cartões Marcadores Dinâmicos em Ambientes de Realidade Aumentada. In: II Workshop de Realidade Aumentada (WRA2005), 2005, Piracicaba. Anais do II Workshop de Realidade Aumentada (WRA2005), 2005. p. 56-59.

• OIKAWA, Marina Atsumi ; DE SOUZA ALMEIDA, IGOR ; TAKETOMI, Takafumi ; YAMAMOTO, Goshiro ; MIYAZAKI, Jun ; KATO, Hirokazu . Augmented prototyping of 3D rigid curved surfaces. In: 2012 IEEE International Symposium on Mixed and Augmented Reality (ISMAR), 2012, Atlanta. 2012 IEEE International Symposium on Mixed and Augmented Reality (ISMAR). p. 307-308.

• DE SOUZA ALMEIDA, I. ; OIKAWA, M. A. ; POLO, J. C. ; MIYAZAKI, J. ; BILLINGHURST, M. ; KATO, H. . Poster: AR-based social presence enhancement in video-chat communication. In: 2012 IEEE Symposium on 3D User Interfaces (3DUI), 2012, Costa Mesa. 2012 IEEE Symposium on 3D User Interfaces (3DUI). p. 135-136.

• OIKAWA, Marina Atsumi ; YAMAMOTO, Goshiro ; FUJISAWA, Makoto ; AMANO, Toshiyuki ; MIYAZAKI, Jun ; KATO, Hirokazu . Model Based Tracking of Rigid Curved Objects using Sparse Polygonal Meshes.. In: The 21st International Conference on Artificial Reality and Telexistence, 2011, Osaka. Proceedings of The 21st International Conference on Artificial Reality and Telexistence, 2011.

• OIKAWA, Marina Atsumi ; FUJISAWA, Makoto ; AMANO, Toshiyuki ; MIYAZAKI, Jun ; KATO, Hirokazu . Apparent contour tracking of 3D rigid curved objects based on quadrics approximation of the surface. In: The 3rd Korea-Japan Workshop in Mixed Reality (KJMR2010), 2010, GyeongJu. Proceedings of The 3rd Korea-Japan Workshop in Mixed Reality (KJMR2010), 2010. p. 24-37.

• DE SOUZA ALMEIDA, IGOR ; HIRAMATSU, Tatsuya ; CARRES, JORDI POLO ; KATO, Hirokazu ; OIKAWA, Marina Atsumi . HANDY system for video-mediated communication. In: the International Conference, 2009, Athens. Proceedings of the International Conference on Advances in Computer Enterntainment Technology - ACE '09. New York: ACM Press. p. 405-406.

• OIKAWA, Marina Atsumi ; KATO, Hirokazu . Tracking Curved Surfaces by Quadrics Approximation of Their Apparent Contour. In: The 2nd Korea-Japan Workshop on Mixed Reality (KJMR2009), 2009, Hakodate. Proceedings of The 2nd Korea-Japan Workshop on Mixed Reality (KJMR2009), 2009.

• MEIGUINS, Bianchi Serique ; ALMEIDA, Igor de Souza ; OIKAWA, Marina Atsumi . Cartões Marcadores Reconfiguráveis em Ambientes de Realidade Aumentada. In: VIII Simposium on Virtual Reality, 2006, Belem. Anais do VIII Simposium on Virtual Reality, 2006.

• MEIGUINS, Bianchi Serique ; ALMEIDA, Igor de Souza ; OIKAWA, Marina Atsumi . Interação com Cartões Marcadores Reconfiguráveis em Ambientes de Realidade Aumentada gerados pelo ARToolKit. In: II Workshop de Iniciação Científica em Realidade Virtual, 2006, Belem. Anais do II Workshop de Iniciação Científica em Realidade Virtual, 2006.

• ALMEIDA, Igor de Souza ; OIKAWA, Marina Atsumi ; MEIGUINS, Bianchi Serique . Tangram em Ambientes de Realidade Aumentada. In: I Workshop de Aplicações de Realidade Virtual, 2005, Uberlândia. Anais do I Workshop de Aplicações de Realidade Virtual, 2005. p. 60-63.

• OIKAWA, Marina Atsumi ; ALMEIDA, Igor de Souza ; MEIGUINS, Bianchi Serique . Reconfigurable markers for AR environments. In: 2008 International Workshop on Ubiquitous Virtual Reality, 2008, Osaka. Proceedings of The 2008 International Workshop on Ubiquitous Virtual Reality, 2008.

• OIKAWA, Marina Atsumi ; KATO, Hirokazu . Apparent contour tracking of 3D rigid curved objects based on quadrics approximation of the surface. 2010. (Apresentação de Trabalho/Outra).

• BERRY, Rodney ; OIKAWA, Marina Atsumi ; PRASAD, Janaka ; UNTERBERG, Jörg ; WEI, Liu ; CHEOK, Adrian David ; KATO, Hirokazu . Augmented Reality Authoring for Artists and Designers. 2008. (Apresentação de Trabalho/Congresso).

Outras produções

Projetos de pesquisa

• 2014 - 2016

  Multimedia Phylogeny Forest Reconstruction: Recovering the ancestry relationship of Images, Videos and Text Documents, Descrição: Nowadays, several cases of tampered digital media exist, depicting events that did not happen exactly the way they were reported, with some retouching, content inclusion or removal, among other types of operations. Whether these modifications were performed only for entertainment purposes or to forge digital evidence in crime investigations, it is undeniable the increasing importance of multimedia forensics research. In some cases, to simply investigate if one document is a duplicate of another is not enough; knowledge about the history of modifications is also important, since it can give us hints about its origi- nal creator and a better understanding of how the content was transformed along its lifetime. From this demand, a new research field called multimedia phylogeny has arisen, aiming at investigating how to infer the relationships among objects that belong to the same population. These relationships, represented by means of directed acyclic graphs, resemble the phylogenetic trees used in Biology and are a conve- nient way to describe the order and the chain of transformations used to create the digital object under investigation. In this research project, we aim at broadening the current state-of-the-art of multimedia phylogeny algorithms, by improving its robustness and expanding them from the image domain to videos and text documents. As a first step, we will target improvements on the calculation of the dissimilarity among the related objects, followed by new approaches for reconstructing phylogeny forests, that is, cases in which we have multiple objects with similar semantic content, but that might not be directly related to each other, being necessary to correctly place them in different processing trees. Furthermore, since most of the approaches developed so far are mainly applied to images, it is paramount to develop new methods to attend the particularities of videos and, in special, text documents, a type of media least explored and whose properties differ in many levels to images and videos. Other expected contributions of this research include the creation of new datasets and development of additional evaluation metrics when necessary.. , Situação: Concluído; Natureza: Pesquisa. , Alunos envolvidos: Graduação: (1) / Doutorado: (1) . , Integrantes: Marina Atsumi Oikawa - Integrante / Anderson de Rezende Rocha - Coordenador / Zanoni Dias - Integrante / Siome Goldenstein - Integrante.

• 2009 - 2010

  Physical presence simulation for video chatting communication, Descrição: Establishing a proper communication channel between two people geographically separated raises the issue of how to shorten the existent distance between them. A higher interaction level may be one decisive factor. Video chatting is considered one of the most popular remote communication solutions, which can be easily found in Instant Messaging (IM) protocols such as Yahoo Messenger, Google Chat, among others. Its affordable status attracts a large amount of people, allowing them to enjoy it with minimum settings. In a typical video chatting environment, two windows display video images from both, local and remote webcams, and the interaction is limited to hear and see the remote end. Nevertheless, physical barriers are still very much noticeable. For instance, it is impossible to hug or shake hands with your friend on the other side of the camera, even though you can listen and see him. This project proposes a one step forward in the interaction level of video chatting experience by creating a ?virtual portal? in both sides local space. That means simulate physical presence of one user into a second user?s real world. For example, it will be possible to stretch your arm towards the camera and seeing it coming out in the other user?s webcam as if you were reaching him. In summary, this project intended to provide to the user a closer sensation of presence by making use of computer vision based Augmented Reality techniques combined with real time video merging algorithms and as a final result, a more interactive communication channel.. , Situação: Concluído; Natureza: Pesquisa. , Alunos envolvidos: Mestrado acadêmico: (3) Doutorado: (1) . , Integrantes: Marina Atsumi Oikawa - Integrante / Jordi Carres Polo - Integrante / Igor de Souza Almeida - Integrante / Hirokazu Kato - Coordenador / Tatsuya Hiramatsu - Integrante.

• 2008 - 2008

  Range finder using a camera-projector system., Descrição: This project aimed the development of a range finder system to obtain a complete 3D model of the target object using a camera and a projector. By the end of the project, users were invited to construct clay models that were measured by our system and inserted in a virtual city. Then, they could see their own models in an augmented reality environment using a Head-Mounted Display and interact with them using a cup-shaped object.. , Situação: Concluído; Natureza: Pesquisa. , Integrantes: Marina Atsumi Oikawa - Integrante / Yosuke Koide - Integrante / Hirokazu Kato - Coordenador / Tatsuya Hiramatsu - Integrante.

Prêmios