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- research-articleAugust 2024
Multi-frame Bitrate Allocation of Dynamic 3D Gaussian Splatting Streaming Over Dynamic Networks
EMS '24: Proceedings of the 2024 SIGCOMM Workshop on Emerging Multimedia SystemsPages 1–7https://doi.org/10.1145/3672196.3673394Dynamic 3D Gaussian splats have emerged as an exciting new data type for modeling interactive photo-realistic 3D scenes. This work considers the problem of bitrate allocation for streaming dynamic 3D Gaussian splats under dynamic network conditions. We ...
- ArticleJuly 2024
Learning Mesh Geometry Prediction
AbstractWe propose a single-rate method for geometry compression of triangle meshes based on using a neural predictor to predict the encoded vertex positions using connectivity and an already known part of the geometry. The method is based on standard ...
- research-articleMay 2024
Improved 3D human face reconstruction from 2D images using blended hard edges
Neural Computing and Applications (NCAA), Volume 36, Issue 24Pages 14967–14987https://doi.org/10.1007/s00521-024-09868-8AbstractThis study reports an effective and robust edge-based scheme for the reconstruction of 3D human faces from input of single images, addressing drawbacks of existing methods in case of large face pose angles or noisy input images. Accurate 3D face ...
- research-articleApril 2024
Triangular matrix-based lossless compression algorithm for 3D mesh connectivity
The Visual Computer: International Journal of Computer Graphics (VISC), Volume 40, Issue 6Pages 3961–3970https://doi.org/10.1007/s00371-024-03400-8AbstractThree-dimensional mesh compression is vital to support advances in many scenarios, such as 3D web-based applications. Existing 3D mesh methods usually require complex data structures and time-consuming processing. Given a mesh represented by its ...
- research-articleFebruary 2024
InterCap: Joint Markerless 3D Tracking of Humans and Objects in Interaction from Multi-view RGB-D Images
International Journal of Computer Vision (IJCV), Volume 132, Issue 7Pages 2551–2566https://doi.org/10.1007/s11263-024-01984-1AbstractHumans constantly interact with objects to accomplish tasks. To understand such interactions, computers need to reconstruct these in 3D from images of whole bodies manipulating objects, e.g., for grasping, moving and using the latter. This ...
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- research-articleJanuary 2024
Assessing the perceptual equivalence of a firefighting training exercise across virtual and real environments
- David Narciso,
- Miguel Melo,
- Susana Rodrigues,
- Duarte Dias,
- João Cunha,
- José Vasconcelos-Raposo,
- Maximino Bessa
AbstractThe advantages of Virtual Reality (VR) over traditional training, together with the development of VR technology, have contributed to an increase in the body of literature on training professionals with VR. However, there is a gap in the ...
- research-articleMarch 2024
The role of different light settings on the perception of realism in virtual replicas in immersive Virtual Reality
Computers and Graphics (CGRS), Volume 117, Issue CPages 172–182https://doi.org/10.1016/j.cag.2023.10.021AbstractImmersive Virtual Reality (IVR) provides a platform where the real world can be replicated to a point where users can act and react in the virtual world as they would in reality. However, rendering visual stimuli is computationally heavy. Thus, ...
Graphical abstractDisplay Omitted
Highlights- GI & Direct Shadows crucial for realism, while AO & Reflections less significant.
- GI impact: none to low-quality > low- to high-quality.
- Users insisted in having Direct Shadows at highest quality.
- Perception of reality varies ...
- research-articleMarch 2024
An interactive triangle-based ODF glyph rendering for high angular resolution diffusion imaging
Computers and Graphics (CGRS), Volume 116, Issue CPages 393–403https://doi.org/10.1016/j.cag.2023.08.027AbstractDiffusion magnetic resonance imaging quantifies the diffusion of water molecules. It is unique in showing white matter fiber structures and connectivity in-vivo, relying on the fact that the water molecules’ displacements are more significant ...
Graphical abstractDisplay Omitted
- research-articleMarch 2024
Random screening-based feature aggregation for point cloud denoising
Computers and Graphics (CGRS), Volume 116, Issue CPages 64–72https://doi.org/10.1016/j.cag.2023.08.013AbstractRaw point clouds captured by sensing devices are often contaminated with noise, which perturbs the fidelity of the original geometric information. Point cloud denoising is therefore an inseparable post-processing step, aiming to remove the noise ...
Graphical abstractDisplay Omitted
Highlights- Random screening-based point feature aggregation is useful for point cloud denoising.
- Merging features of dense points into sparser points boosts point cloud denoising.
- Our pipeline demonstrates robustness to noise and saves ...
- research-articleOctober 2023
GSNet: Generating 3D garment animation via graph skinning network
AbstractThe goal of digital dress body animation is to produce the most realistic dress body animation possible. Although a method based on the same topology as the body can produce realistic results, it can only be applied to garments with the same ...
Graphical abstractDisplay Omitted
- research-articleSeptember 2023
Correspondence Distillation from NeRF-Based GAN
International Journal of Computer Vision (IJCV), Volume 132, Issue 3Pages 611–631https://doi.org/10.1007/s11263-023-01903-wAbstractThe neural radiance field (NeRF) has shown promising results in preserving the fine details of objects and scenes. However, unlike explicit shape representations e.g., mesh, it remains an open problem to build dense correspondences across ...
- ArticleDecember 2023
Investigation on the Encoder-Decoder Application for Mesh Generation
AbstractIn computer graphics, 3D modeling is a fundamental concept. It is the process of creating three-dimensional objects or scenes using specialized software that allows users to create, manipulate and modify geometric shapes to build complex models. ...
- research-articleJune 2023
Textured Mesh Quality Assessment: Large-scale Dataset and Deep Learning-based Quality Metric
ACM Transactions on Graphics (TOG), Volume 42, Issue 3Article No.: 31, Pages 1–20https://doi.org/10.1145/3592786Over the past decade, three-dimensional (3D) graphics have become highly detailed to mimic the real world, exploding their size and complexity. Certain applications and device constraints necessitate their simplification and/or lossy compression, which ...
- research-articleFebruary 2023
Pictonaut: movie cartoonization using 3D human pose estimation and GANs
Multimedia Tools and Applications (MTAA), Volume 82, Issue 14Pages 21101–21115https://doi.org/10.1007/s11042-023-14556-1AbstractThis article describes Pictonaut, a novel method to automatically synthetise animated shots from motion picture footage. Its results are editable (backgrounds, characters, lighting, etc.) with conventional 3D software, and they have the finish of ...
- research-articleDecember 2022
Deep generation of 3D articulated models and animations from 2D stick figures
Computers and Graphics (CGRS), Volume 109, Issue CPages 65–74https://doi.org/10.1016/j.cag.2022.10.004AbstractGenerating 3D models from 2D images or sketches is a widely studied important problem in computer graphics. We describe the first method to generate a 3D human model from a single sketched stick figure. In contrast to the existing ...
Graphical abstractDisplay Omitted
Highlights- Our method generates 3D models and animations from given 2D stick figure sketches.
- research-articleNovember 2022
Tauray: A Scalable Real-Time Open-Source Path Tracer for Stereo and Light Field Displays
SA '22: SIGGRAPH Asia 2022 Technical CommunicationsArticle No.: 11, Pages 1–4https://doi.org/10.1145/3550340.3564225Light field displays represent yet another step in continually increasing pixel counts. Rendering realistic real-time 3D content for them with ray tracing-based methods is a major challenge even accounting for recent hardware acceleration features, as ...
- ArticleOctober 2022
Pruning-Based Topology Refinement of 3D Mesh Using a 2D Alpha Mask
AbstractImage-based 3D reconstruction has increasingly stunning results over the past few years with the latest improvements in computer vision and graphics. Geometry and topology are two fundamental concepts when dealing with 3D mesh structures. But the ...
- ArticleOctober 2022
Visualizing Data Flows in Computer Graphics Programs for Code Comprehension and Debugging
AbstractOpenGL is the most widely used API and programming language in college-level computer graphics courses. However, OpenGL programs are difficult to comprehend and debug because they involve programming for both CPU and GPU and the data transfer ...
- research-articleMay 2022
- research-articleApril 2022
Observation-driven generation of texture maps depicting dust accumulation over time
The Visual Computer: International Journal of Computer Graphics (VISC), Volume 39, Issue 5Pages 1943–1957https://doi.org/10.1007/s00371-022-02457-7AbstractThe perception of realism in computer-generated images can be significantly enhanced by subtle visual cues. Among those, one can highlight the presence of dust on synthetic objects, which is often subject to temporal variations in real settings. ...