Expressive + WICED 2025: Artworks, Posters, and Demo

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Browsing Expressive + WICED 2025: Artworks, Posters, and Demo by Title

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    ACM/EG Expressive Symposium 2025 Posters and Demos: Frontmatter
    (The Eurographics Association, 2025) Berio, Daniel; Bruckert, Alexandre; Berio, Daniel; Bruckert, Alexandre
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    A Blender Add-on for 3D Concept Sketching
    (The Eurographics Association, 2025) Wie, Jiayi; Bousseau, Adrien; Berio, Daniel; Bruckert, Alexandre
    We present a Blender add-on that bridges the Grease Pencil drawing interface with a symmetry-driven 3D reconstruction algorithm for concept sketches. On the one hand, Blender's Grease Pencil offers users a convenient interface to draw 2D concept sketches using vector strokes, drawn freehand or using vector primitives (straight lines, Bézier curves). On the other hand, the reconstruction algorithm of Hähnlein et al. [HGSB22] can lift such 2D sketches to 3D using symmetry correspondences. While this reconstruction algorithm was originally developed to be automatic, we show how it can be adapted to allow step-by-step reconstruction of a sketch as it is drawn, and to support user corrections. Finally, we compare the reconstructions obtained with this add-on to the ones produced by a recent generative model trained to produce a 3D shape from a single image.
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    Bringing Emotions into the Picture: the CambiaColore Technology for Socio-emotional Learning in Children
    (The Eurographics Association, 2025) Ceccaldi, Eleonora; Ferrando, Silvia; Corbellini, Nicola; Lepri, Giacomo; Volpe, Gualtiero; Berio, Daniel; Bruckert, Alexandre
    Recognizing our and other people's emotions and being able to express them are key abilities that need to be nurtured and cherished. Technologies can provide teachers and educators with tools that help them engage children in didactic activities, which can foster the development of their emotional abilities. These technologies can also help children find outlets for their emotions, for instance through drawing or expressing emotions with their bodies. This work presents CambiaColore, a novel technology for emotional expression in children. The technology is grounded in the link between drawing and emotion, which is particularly powerful in children and aims to provide teachers with a novel engaging tool for educational, socio-emotional learning activities. Moreover, the technology aims to help children better grasp the interplay between individual and group emotions. The system was co-designed with teachers and educators, who provided incredibly valuable insight regarding its usability and target users. Here, we describe the theoretical premises of our system and its set-up and game-play and present future work directions.
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    Evaluating Temporal Coherence using a Watercolor Renderer
    (The Eurographics Association, 2025) Morgan, Ingrid Ellen Carr; Billeter, Markus; Anjyo, Ken; Anjos, Rafael Kuffner dos; Berio, Daniel; Bruckert, Alexandre
    Temporal coherence is a long-standing issue within Non-Photorealistic Rendering (NPR). The problem has been defined as a trade-off between the three main factors: flatness, temporal continuity and motion coherence. Approaches that improve temporal coherence are applied across different styles within diverse animation contexts. We have implemented a watercolour renderer that supports multiple temporal coherence approaches in a unified system to investigate this trade-off. The approaches are then evaluated against existing work, with consideration of how external factors including animations and textures may influence perceived incoherence.
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    Expressive Rendering for 2D Animations of Liquids
    (The Eurographics Association, 2025) Regla, Rodrigo Stevenson; Rohmer, Damien; Barthe, Loïc; Cani, Marie-Paule; Berio, Daniel; Bruckert, Alexandre
    We describe a new rendering technique for expressive liquid surface 2D animation that can be used on top of existing particlebased simulations. We introduce a hybrid particle model that carries both water and air density distribution and can evolve through particle history. These material quantities combined with the kinematics information are then used to generate a scalar field, which can be parameterized to create an implicit iso-surface capturing stylized geometry commonly seen in paintings and cartoons. We propose, in particular, to represent behavior highlighting the dynamical aspect of the scene, such as elongated droplet behavior and curl-like shapes found in breaking waves.
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    LABOR: Production of a Large-scale Painting with a Robot
    (The Eurographics Association, 2025) Grayver, Liat; Berio, Daniel; Herrmann, Inge; Notz, Adrian; Berio, Daniel; Bruckert, Alexandre
    Labor is a live human/robot painting installation that combines generative graphics techniques, robotic automation and traditional painting methods. It explores the role of embodied intelligence in artistic production. The resulting composition is a large-scale painting consisting of multiple individually painted tiles. The painting is based on an electron microscope image of a placenta, which is algorithmically processed into a series of parametric brushstrokes using a differentiable vector graphics pipeline. These strokes are then collaboratively painted using a 7-axis robotic arm equipped with custom paintbrushes. The project engages with the dual meaning of ''labor'': industrial production and childbirth, highlighting the often-overlooked importance of bodily knowledge in the arts but particularly in medical and technological contexts. The installation explores the balance between human intuition and algorithmic automation, emphasizing the importance of material constraints and the role of human artists in the creation a large-scale generative painting.
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    Perception of Drawing Reference Quality among Professional Hand-drawn Animators
    (The Eurographics Association, 2025) Schwartz, Rachael; Mullery, Mark; Dingliana, John; McDonnell, Rachel; Berio, Daniel; Bruckert, Alexandre
    We present a preliminary experiment, investigating professional hand-drawn animators' perception of how good one frame is as drawing reference for another. 10 professional hand-drawn animators rated the drawing reference quality of 54 hand-drawn frame pairs, each differing by character pose and region rotation, reflection, and distortion transformations. Our results indicate that animators perceive frames differing by rotation/reflection as better drawing reference than frames differing by distortion.
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    Robotic Painting using Semantic Image Abstraction
    (The Eurographics Association, 2025) Stroh, Michael; Paetzold, Patrick; Berio, Daniel; Leymarie, Frederic Fol; Kehlbeck, Rebecca; Deussen, Oliver; Berio, Daniel; Bruckert, Alexandre
    We present a novel image segmentation and abstraction pipeline tailored to robot painting applications. We address the unique challenges of realizing digital abstractions as physical artistic renderings. Our approach generates adaptive, semantics-based abstractions that balance aesthetic appeal, structural coherence, and practical constraints inherent to robotic systems. By integrating panoptic segmentation with color-based over-segmentation, we partition images into meaningful regions corresponding to semantic objects while providing customizable abstraction levels we optimize for robotic realization. We employ saliency maps and color difference metrics to support automatic parameter selection to guide a merging process that detects and preserves critical object boundaries while simplifying less salient areas. Graph-based community detection further refines the abstraction by grouping regions based on local connectivity and semantic coherence. These abstractions enable robotic systems to create paintings on real canvases with a controlled level of detail and abstraction.
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    Sensing the Invisible: Breathing Life into the Universe
    (The Eurographics Association, 2025) Cheng, Qifeng; Seaman, William; Berio, Daniel; Bruckert, Alexandre
    In an era where machines seemingly ''think'' like us, what truly sets us apart? Sensing the Invisible - Breathing Life into the Universe is an interactive installation that explores the dialogue between human sensory experiences-exemplified by the subtle act of breathing-and the responses of machine sensors. By employing a microphone, humidity sensor, and air pressure sensor, this artwork translates the invisible act of breathing into dynamic visual expressions that evoke celestial concepts, reminiscent of how Earth's most powerful sensors-telescopes-capture the cosmos. It seeks to understand how machine sensors communicate and interact with us across different frequencies and scales, extending beyond the limits of our own sensory systems. This paper describes the conceptual framework, design, technical implementation, and audience interactions that underscore a new language of human-machine communication.
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    Towards Automated 2D Character Animation
    (The Eurographics Association, 2025) Mailee, Hamila; Anjos, Rafael Kuffner dos; Berio, Daniel; Bruckert, Alexandre
    Automating facial expression changes in comics and 2D animation presents several challenges, as facial structures can vary widely, and audiences are susceptible to the subtlest changes. Building on extensive research in human face image manipulation, landmark-guided image editing offers a promising solution, providing precise control and yielding satisfactory results. This study addresses the challenges hindering the advancement of landmark-based methods for cartoon characters and proposes the use of object detection models -specifically YOLOX and Faster R-CNN- to detect initial facial regions. These detections serve as a foundation for expanding landmark annotations, enabling more effective expression manipulation to animate expressive characters. The codes and trained models are publicly available here.
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    Where Are We Now?
    (The Eurographics Association, 2025) Williams, Peter J.; Wong, Sala; Berio, Daniel; Bruckert, Alexandre
    Where Are We Now? is an interactive physical computing artwork that contrasts moments throughout a recent period of intense changes in Hong Kong. Recalling the use of weaving in early computing and image creation, it is a mechanical display made up of urban landscape images on looped, woven ribbons that expressively rub up against one another. Pulling, snagging and fraying, their tension brings out complications in daily life amid societal shifts. This difficult movement expresses the complex and conflicted nature of Hong Kong's recent history, specifically between 2018 and 2024, the years when the collaged 360- degree/panoramic urban landscape photographs which are printed onto the ribbons were made.