Recent Submissions

  • NII-HITACHI-UIT at TRECVID 2015 instance search 

    Nguyen, Vinh-Tiep; Le, Duy-Dinh; Salvador Aguilera, Amaia; Zu, Caizhi; Nguyen, Dinh-Luan; Tran, Minh-Triet; Duc, Thanh-Ngo; Duong, Duc-Anh; Satoh, Shin'ichi; Giró Nieto, Xavier (2015)
    Conference lecture
    Restricted access - publisher's policy
    In this paper, we propose two methods to improve last year instance search framework. Both of them are based on post processing scheme that try to rerank top K shots returned from BOW model. The rst system is to propose a ...
  • Insight DCU at TRECVID 2015 

    McGuinness, Kevin; Mohedano, Eva; Salvador Aguilera, Amaia; Zhan, Zhenxing; Marsden, Mark; Wang, Peng; Jargalsaikhan, Iveel; Antony, Joseph; Giró Nieto, Xavier; Satoh, Shin'ichi; O'Connor, Noel; Smeaton, Alan F. (2015)
    Conference lecture
    Restricted access - publisher's policy
    Insight-DCU participated in the instance search (INS), semantic indexing (SIN), and localization tasks (LOC) this year. In the INS task we used deep convolutional network features trained on external data and the query ...
  • Diving deep into sentiment: understanding fine-tuned CNNs for visual sentiment prediction 

    Campos Camúñez, Victor; Salvador Aguilera, Amaia; Jou, Brendan; Giró Nieto, Xavier (Association for Computing Machinery (ACM), 2015)
    Conference lecture
    Open Access
    Visual media are powerful means of expressing emotions and sentiments. The constant generation of new content in social networks highlights the need of automated visual sentiment analysis tools. While Convolutional Neural ...
  • Exploring EEG for object detection and retrieval 

    Mohedano Robles, Eva; Salvador Aguilera, Amaia; Porta, Sergi; Giró Nieto, Xavier; Healy, Graham; McGuinness, Kevin; O'Connor, Noel; Smeaton, Alan F. (Association for Computing Machinery (ACM), 2015)
    Conference lecture
    Open Access
    This paper explores the potential for using Brain Computer Interfaces (BCI) as a relevance feedback mechanism in content-based image retrieval. Several experiments are performed using a rapid serial visual presentation ...
  • Fast and robust edge extraction in unorganized point clouds 

    Bazazian, Dena; Casas Pla, Josep Ramon; Ruiz Hidalgo, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference lecture
    Restricted access - publisher's policy
    Edges provide important visual information in scene surfaces. The need for fast and robust feature extraction from 3D data is nowadays fostered by the widespread availability of cheap commercial depth sensors and multi-camera ...
  • Cultural event recognition with visual ConvNets and temporal models 

    Salvador Aguilera, Amaia; Manchon Vizuete, Daniel; Calafell, Andrea; Giró Nieto, Xavier; Zeppelzauer, Matthias (2015)
    Conference lecture
    Open Access
    This paper presents our contribution to the ChaLearn Challenge 2015 on Cultural Event Classification. The challenge in this task is to automatically classify images from 50 different cultural events. Our solution is based ...
  • Time consistent estimation of End-effectors from RGB-D data 

    Lin, Xiao; Casas Pla, Josep Ramon; Pardàs Feliu, Montse (Springer, 2015)
    Conference lecture
    Restricted access - publisher's policy
    End-effectors are usually related to the location of the free end of a kinematic chain. Each of them contains rich structure information about the entity. Hence, estimating stable end-effectors of different entities enables ...
  • UPC-UB-STP @ MediaEval 2015 diversity task: iterative reranking of relevant images 

    Lidon, Aniol; Giró Nieto, Xavier; Bolaños, Marc; Radeva, Petia; Seidl, Markus; Zeppelzauer, Matthias (CEUR-WS.org, 2015)
    Conference report
    Open Access
    This paper presents the results of the UPC-UB-STP team in the 2015 MediaEval Retrieving Diverse Images Task.The goal of the challenge is to provide a ranked list of Flickr photos for a predefined set of queries. Our approach ...
  • Accelerating super-resolution for 4K upscaling 

    Pérez-Pellitero, Eduardo; Salvador, Jordi; Ruiz Hidalgo, Javier; Rosenhahn, Bodo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    This paper presents a fast Super-Resolution (SR) algorithm based on a selective patch processing. Motivated by the observation that some regions of images are smooth and unfocused and can be properly upscaled with fast ...
  • Region-based depth map coding using a 3D scene representation 

    Maceira, Marc; Morros Rubió, Josep Ramon; Ruiz Hidalgo, Javier (2015)
    Conference report
    Restricted access - publisher's policy
    In 3D video, view synthesis is used to process new virtual views between encoded camera views. Errors in the coding of the depth maps introduce geometry inconsistencies in synthesized views. In this paper, a 3D plane ...

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