Searched for: author%3A%22Cesar%2C+Pablo%22
(1 - 20 of 39)

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Bota, Patrícia (author), Brito, Joana (author), Fred, Ana (author), Cesar, Pablo (author), Silva, Hugo (author)
Affective computing has experienced substantial advancements in recognizing emotions through image and facial expression analysis. However, the incorporation of physiological data remains constrained. Emotion recognition with physiological data shows promising results in controlled experiments but lacks generalization to real-world settings....
journal article 2024
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Zhang, T. (author), El Ali, Abdallah (author), Wang, Chen (author), Hanjalic, A. (author), Cesar, Pablo (author)
Instead of predicting just one emotion for one activity (e.g., video watching), fine-grained emotion recognition enables more temporally precise recognition. Previous works on fine-grained emotion recognition require segment-by-segment, fine-grained emotion labels to train the recognition algorithm. However, experiments to collect these...
journal article 2023
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Ooms, Simone (author), Lee, Minha (author), Cesar, Pablo (author), El Ali, Abdallah (author)
Emotion plays a key role in the emerging wave of immersive, multi-sensory audience news engagement experiences. Since emotions can be triggered by somatosensory feedback, in this work we explore how augmenting news video watching with haptics can influence affective perceptions of news. Using a mixed-methods approach, we design and evaluate...
conference paper 2023
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El Ali, Abdallah (author), Stepanova, Ekaterina R. (author), Palande, Shalvi (author), Mader, Angelika (author), Cesar, Pablo (author), Jansen, K.M.B. (author)
Sharing breathing signals has the capacity to provide insights into hidden experiences and enhance interpersonal communication. However, it remains unclear how the modality of breath signals (visual, haptic) is socially interpreted during collaborative tasks. In this mixed-methods study, we design and evaluate BreatheWithMe, a prototype for...
conference paper 2023
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Rao, Shruti (author), Wirjopawiro, Sabrina (author), Pons Rodriguez, Gerard (author), Röggla, Thomas (author), Cesar, Pablo (author), El Ali, Abdallah (author)
Eliciting and capturing drivers' affective responses in a realistic outdoor setting with pedestrians poses a challenge when designing in-vehicle, empathic interfaces. To address this, we designed a controlled, outdoor car driving circuit where drivers (N=27) drove and encountered pedestrian confederates who performed non-verbal positive or...
conference paper 2023
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Rossi, Silvia (author), Viola, Irene (author), Toni, Laura (author), Cesar, Pablo (author)
Immersive reality technologies, such as Virtual and Augmented Reality, have ushered a new era of user-centric systems, in which every aspect of the coding-delivery-rendering chain is tailored to the interaction of the users. Understanding the actual interactivity and behaviour of the users is still an open challenge and a key step to enabling...
conference paper 2023
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Rao, Shruti (author), Ghosh, Surjya (author), Rodriguez, Gerard Pons (author), Röggla, Thomas (author), Cesar, Pablo (author), El Ali, Abdallah (author)
Capturing drivers’ affective responses given driving context and driver-pedestrian interactions remains a challenge for designing in-vehicle, empathic interfaces. To address this, we conducted two lab-based studies using camera and physiological sensors. Our first study collected participants’ (N = 21) emotion self-reports and physiological...
journal article 2023
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El Ali, Abdallah (author), Ney, R. (author), Van Berlo, Zeph M.C. (author), Cesar, Pablo (author)
Measuring interoception ('perceiving internal bodily states') has diagnostic and wellbeing implications. Since heartbeats are distinct and frequent, various methods aim at measuring cardiac interoceptive accuracy (CIAcc). However, the role of exteroceptive modalities for representing heart rate (HR) across screen-based and Virtual Reality (VR...
journal article 2023
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Smitskamp, Gwennan (author), Viola, Irene (author), Cesar, Pablo (author)
The development and widespread adoption of immersive XR applications has led to a renewed interest in representations that are capable of reproducing real-world objects and scenes with high fidelity. Among such representations, point clouds have attracted the interest of industry and academia alike, and new compression solutions have been...
conference paper 2023
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Li, Jie (author), Cesar, Pablo (author)
Virtual reality (VR) is the experience in a simulated interactive virtual space. It provides synthetic sensory feedback to users' actions that can physically and mentally immerse the users. Social VR is one type of VR system that allows multiple users to join a collaborative virtual environment and communicate with each other, usually by...
book chapter 2023
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Alexiou, Evangelos (author), Nehmé, Yana (author), Zerman, Emin (author), Viola, Irene (author), Lavoué, Guillaume (author), Ak, Ali (author), Smolic, Aljosa (author), Le Callet, Patrick (author), Cesar, Pablo (author)
Volumetric video (VV) is a novel form of video that allows recreation of real-world scenes in 3D with users consuming the content from any viewpoint they desire. This makes VV best suited for augmented reality (AR) or virtual reality (VR) applications. This freedom necessitates increased user interaction with the VV itself, which brings new...
book chapter 2023
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Lee, Sueyoon (author), El Ali, Abdallah (author), Wijntjes, M.W.A. (author), Cesar, Pablo (author)
Visualizing biosignals can be important for social Virtual Reality (VR), where avatar non-verbal cues are missing. While several biosignal representations exist, designing effective visualizations and understanding user perceptions within social VR entertainment remains unclear. We adopt a mixed-methods approach to design biosignals for...
conference paper 2022
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Zhang, T. (author), El Ali, Abdallah (author), Hanjalic, A. (author), Cesar, Pablo (author)
Fine-grained emotion recognition can model the temporal dynamics of emotions, which is more precise than predicting one emotion retrospectively for an activity (e.g., video clip watching). Previous works require large amounts of continuously annotated data to train an accurate recognition model, however experiments to collect such large...
journal article 2022
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Montagud, Mario (author), Li, Jie (author), Cernigliaro, Gianluca (author), El Ali, Abdallah (author), Fernández, Sergi (author), Cesar, Pablo (author)
Social VR enables people to interact over distance with others in real-time. It allows remote people, typically represented as avatars, to communicate and perform activities together in a shared virtual environment, extending the capabilities of traditional social platforms like Facebook and Netflix. This paper explores the benefits and...
journal article 2022
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Ghosh, Surjya (author), Pons Rodriguez, Gerard (author), Rao, Shruti (author), El Ali, Abdallah (author), Cesar, Pablo (author)
While affective non-verbal communication between pedestrians and drivers has been shown to improve on-road safety and driving experiences, it remains a challenge to design driver assistance systems that can automatically capture these affective cues. In this early work, we identify users' emotional self-report responses towards commonly...
conference paper 2022
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Lee, Sueyoon (author), Striner, Alina (author), Cesar, Pablo (author)
Several social VR platforms support virtual entertainment events, however their value for post-show activities remains unclear. Through a user-centered approach, we design a social VR lobby experience to enrich four motivations of theatre-goers: social, intellectual, emotional, and spiritual engagement. We ran a context-mapping focus group...
conference paper 2022
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Röggla, Thomas (author), Striner, Alina (author), Rivas Pagador, Héctor (author), Cesar, Pablo (author)
This work presents the Co-Creation Space, a multilingual platform for professional and community artists to 1) generate raw artistic ideas, and 2) discuss and reflect on the shared meaning of those ideas. The paper describes the architecture and the technology behind the platform, and how it was used to facilitate the communication process...
conference paper 2022
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Xue, Tong (author), El Ali, Abdallah (author), Viola, Irene (author), Ding, Gangyi (author), Cesar, Pablo (author)
Watching HMD-based 360° video has become in-creasing popular as a medium for immersive viewing of photo-realistic content. To evaluate subjective video quality, researchers typically prompt users to provide an overall Quality of Experience (QoE) score after viewing a stimulus. However, since users can adjust their viewport throughout a 360°...
conference paper 2022
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Rao, Shruti (author), Resendez, Valeria (author), El Ali, Abdallah (author), Cesar, Pablo (author)
Voice User Interfaces (VUIs) such as Alexa and Google Home that use human-like design cues are an increasingly popular means for accessing news. Self-disclosure in particular may be used to build relationships of trust with users who may reveal intimate details about themselves. This information can be (mis)used by algorithms to tailor and...
conference paper 2022
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Rao, Shruti (author), Ghosh, Surjya (author), Pons Rodriguez, Gerard (author), Röggla, Thomas (author), El Ali, Abdallah (author), Cesar, Pablo (author)
Automatically inferring drivers' emotions during driver-pedestrian interactions to improve road safety remains a challenge for designing in-vehicle, empathic interfaces. To that end, we carried out a lab-based study using a combination of camera and physiological sensors. We collected participants' (N=21) real-time, affective (emotion self...
conference paper 2022
Searched for: author%3A%22Cesar%2C+Pablo%22
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