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We introduce Pixel-aligned Implicit Function (PIFu), a highly effective implicit representation that locally aligns pixels of 2D images with the global context of their corresponding 3D object. Using PIFu, we propose an end-to-end deep…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Shunsuke Saito , Zeng Huang , Ryota Natsume , Shigeo Morishima , Angjoo Kanazawa , Hao Li

We propose IntegratedPIFu, a new pixel aligned implicit model that builds on the foundation set by PIFuHD. IntegratedPIFu shows how depth and human parsing information can be predicted and capitalised upon in a pixel-aligned implicit model.…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Kennard Yanting Chan , Guosheng Lin , Haiyu Zhao , Weisi Lin

Pixel-aligned Implicit Function (PIFu) effectively captures subtle variations in body shape within a low-dimensional space through extensive training with human 3D scans, its application to live animals presents formidable challenges due to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 Zijian Kuang , Lihang Ying , Shi Jin , Li Cheng

In this paper, we propose StereoPIFu, which integrates the geometric constraints of stereo vision with implicit function representation of PIFu, to recover the 3D shape of the clothed human from a pair of low-cost rectified images. First,…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Yang Hong , Juyong Zhang , Boyi Jiang , Yudong Guo , Ligang Liu , Hujun Bao

We propose Geo-PIFu, a method to recover a 3D mesh from a monocular color image of a clothed person. Our method is based on a deep implicit function-based representation to learn latent voxel features using a structure-aware 3D U-Net, to…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Tong He , John Collomosse , Hailin Jin , Stefano Soatto

Creating high-quality 3D models of clothed humans from single images for real-world applications is crucial. Despite recent advancements, accurately reconstructing humans in complex poses or with loose clothing from in-the-wild images,…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Zechuan Zhang , Zongxin Yang , Yi Yang

Recent advances in image-based 3D human shape estimation have been driven by the significant improvement in representation power afforded by deep neural networks. Although current approaches have demonstrated the potential in real world…

Computer Vision and Pattern Recognition · Computer Science 2020-04-02 Shunsuke Saito , Tomas Simon , Jason Saragih , Hanbyul Joo

Although PIFu-based 3D human reconstruction methods are popular, the quality of recovered details is still unsatisfactory. In a sparse (e.g., 3 RGBD sensors) capture setting, the depth noise is typically amplified in the PIFu…

Computer Vision and Pattern Recognition · Computer Science 2022-09-28 Zheng Dong , Ke Xu , Ziheng Duan , Hujun Bao , Weiwei Xu , Rynson W. H. Lau

Pixel-aligned implicit models, such as PIFu, PIFuHD, and ICON, are used for single-view clothed human reconstruction. These models need to be trained using a sampling training scheme. Existing sampling training schemes either fail to…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Kennard Yanting Chan , Fayao Liu , Guosheng Lin , Chuan Sheng Foo , Weisi Lin

We present a novel deep learning-based approach to the 3D reconstruction of clothed humans using weak supervision via 2D normal maps. Given a single RGB image or multiview images, our network infers a signed distance function (SDF)…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Jane Wu , Diego Thomas , Ronald Fedkiw

Recent advances in 3D human shape reconstruction from single images have shown impressive results, leveraging on deep networks that model the so-called implicit function to learn the occupancy status of arbitrarily dense 3D points in space.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Nicolas Ugrinovic , Albert Pumarola , Alberto Sanfeliu , Francesc Moreno-Noguer

Single-image 3D human reconstruction aims to reconstruct the 3D textured surface of the human body given a single image. While implicit function-based methods recently achieved reasonable reconstruction performance, they still bear…

Computer Vision and Pattern Recognition · Computer Science 2022-11-10 Gyumin Shim , Minsoo Lee , Jaegul Choo

We address the problem of clothed human reconstruction from a single image or uncalibrated multi-view images. Existing methods struggle with reconstructing detailed geometry of a clothed human and often require a calibrated setting for…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Yukang Cao , Kai Han , Kwan-Yee K. Wong

We propose a novel framework to reconstruct super-resolution human shape from a single low-resolution input image. The approach overcomes limitations of existing approaches that reconstruct 3D human shape from a single image, which require…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Marco Pesavento , Marco Volino , Adrian Hilton

In this work, we present an automated workflow to bring human figures, one of the most frequently appearing entities on pictorial maps, to the third dimension. Our workflow is based on training data and neural networks for single-view 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Raimund Schnürer , A. Cengiz Öztireli , Magnus Heitzler , René Sieber , Lorenz Hurni

Recovering 3D object pose and shape from a single image is a challenging and ill-posed problem. This is due to strong (self-)occlusions, depth ambiguities, the vast intra- and inter-class shape variance, and the lack of 3D ground truth for…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Dimitrije Antić , Georgios Paschalidis , Shashank Tripathi , Theo Gevers , Sai Kumar Dwivedi , Dimitrios Tzionas

Depth-from-defocus (DFD), modeling the relationship between depth and defocus pattern in images, has demonstrated promising performance in depth estimation. Recently, several self-supervised works try to overcome the difficulties in…

Image and Video Processing · Electrical Eng. & Systems 2023-03-28 Haozhe Si , Bin Zhao , Dong Wang , Yunpeng Gao , Mulin Chen , Zhigang Wang , Xuelong Li

A unified self-supervised and supervised deep learning framework for PET image reconstruction is presented, including deep-learned filtered backprojection (DL-FBP) for sinograms, deep-learned backproject then filter (DL-BPF) for…

Image and Video Processing · Electrical Eng. & Systems 2023-02-28 Andrew J. Reader

We present Recurrent Fitting (ReFit), a neural network architecture for single-image, parametric 3D human reconstruction. ReFit learns a feedback-update loop that mirrors the strategy of solving an inverse problem through optimization. At…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Yufu Wang , Kostas Daniilidis

Implicit functions represented as deep learning approximations are powerful for reconstructing 3D surfaces. However, they can only produce static surfaces that are not controllable, which provides limited ability to modify the resulting…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Bharat Lal Bhatnagar , Cristian Sminchisescu , Christian Theobalt , Gerard Pons-Moll
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