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With the success of Neural Radiance Field (NeRF) in 3D-aware portrait editing, a variety of works have achieved promising results regarding both quality and 3D consistency. However, these methods heavily rely on per-prompt optimization when…

计算机视觉与模式识别 · 计算机科学 2024-02-05 Jianhui Li , Shilong Liu , Zidong Liu , Yikai Wang , Kaiwen Zheng , Jinghui Xu , Jianmin Li , Jun Zhu

Hand pose estimation from a single image has many applications. However, approaches to full 3D body pose estimation are typically trained on day-to-day activities or actions. As such, detailed hand-to-hand interactions are poorly…

计算机视觉与模式识别 · 计算机科学 2023-08-21 Maksym Ivashechkin , Oscar Mendez , Richard Bowden

We present iNeRF, a framework that performs mesh-free pose estimation by "inverting" a Neural RadianceField (NeRF). NeRFs have been shown to be remarkably effective for the task of view synthesis - synthesizing photorealistic novel views of…

计算机视觉与模式识别 · 计算机科学 2021-08-11 Lin Yen-Chen , Pete Florence , Jonathan T. Barron , Alberto Rodriguez , Phillip Isola , Tsung-Yi Lin

Visual localization is the task of accurate camera pose estimation in a known scene. It is a key problem in computer vision and robotics, with applications including self-driving cars, Structure-from-Motion, SLAM, and Mixed Reality.…

计算机视觉与模式识别 · 计算机科学 2019-03-19 Torsten Sattler , Qunjie Zhou , Marc Pollefeys , Laura Leal-Taixe

Pose-free neural radiance fields (NeRF) aim to train NeRF with unposed multi-view images and it has achieved very impressive success in recent years. Most existing works share the pipeline of training a coarse pose estimator with rendered…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Jiahui Zhang , Fangneng Zhan , Yingchen Yu , Kunhao Liu , Rongliang Wu , Xiaoqin Zhang , Ling Shao , Shijian Lu

Fourier ptychography (FP), as a computational imaging method, is a powerful tool to improve imaging resolution. Camera-scanning Fourier ptychography extends the application of FP from micro to macro creatively. Due to the non-ideal scanning…

图像与视频处理 · 电气工程与系统科学 2022-06-08 Baiqi Cui , Shaohui Zhang , Yechao Wang , Yao Hu , Qun Hao

Camera, and associated with its objects within the field of view, localization could benefit many computer vision fields, such as autonomous driving, robot navigation, and augmented reality (AR). In this survey, we first introduce specific…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Meng Xu , Youchen Wang , Bin Xu , Jun Zhang , Jian Ren , Stefan Poslad , Pengfei Xu

Neural Radiance Fields (NeRF) have recently gained a surge of interest within the computer vision community for its power to synthesize photorealistic novel views of real-world scenes. One limitation of NeRF, however, is its requirement of…

计算机视觉与模式识别 · 计算机科学 2021-08-20 Chen-Hsuan Lin , Wei-Chiu Ma , Antonio Torralba , Simon Lucey

With the recent advances in NeRF-based 3D aware GANs quality, projecting an image into the latent space of these 3D-aware GANs has a natural advantage over 2D GAN inversion: not only does it allow multi-view consistent editing of the…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Jaehoon Ko , Kyusun Cho , Daewon Choi , Kwangrok Ryoo , Seungryong Kim

When a camera travels across a 3D world, only a fraction of pixel value changes; an event-based camera observes the change as sparse events. How can we utilize sparse events for efficient recovery of the camera pose? We show that we can…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Mana Masuda , Yusuke Sekikawa , Hideo Saito

Monocular 3D human pose estimation (HPE) often encounters challenges such as depth ambiguity and occlusion during the 2D-to-3D lifting process. Additionally, traditional methods may overlook multi-scale skeleton features when utilizing…

计算机视觉与模式识别 · 计算机科学 2025-08-21 Bing Han , Yuhua Huang , Pan Gao

In this work, we propose the use of Neural Radiance Fields (NeRF) as a scene representation for visual localization. Recently, NeRF has been employed to enhance pose regression and scene coordinate regression models by augmenting the…

计算机视觉与模式识别 · 计算机科学 2024-08-22 Qunjie Zhou , Maxim Maximov , Or Litany , Laura Leal-Taixé

Fully-supervised category-level pose estimation aims to determine the 6-DoF poses of unseen instances from known categories, requiring expensive mannual labeling costs. Recently, various self-supervised category-level pose estimation…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Jingtao Sun , Yaonan Wang , Mingtao Feng , Chao Ding , Mike Zheng Shou , Ajmal Saeed Mian

Neural radiance fields (NeRF) is a promising approach for generating photorealistic images and representing complex scenes. However, when processing data sequentially, it can suffer from catastrophic forgetting, where previous data is…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Letian Zhang , Ming Li , Chen Chen , Jie Xu

The quality of fetal MRI is significantly affected by unpredictable and substantial fetal motion, leading to the introduction of artifacts even when fast acquisition sequences are employed. The development of 3D real-time fetal pose…

图像与视频处理 · 电气工程与系统科学 2024-04-02 Molin Zhang , Polina Golland , Patricia Ellen Grant , Elfar Adalsteinsson

We propose a method for editing NeRF scenes with text-instructions. Given a NeRF of a scene and the collection of images used to reconstruct it, our method uses an image-conditioned diffusion model (InstructPix2Pix) to iteratively edit the…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Ayaan Haque , Matthew Tancik , Alexei A. Efros , Aleksander Holynski , Angjoo Kanazawa

In this paper, we address the problem of camera pose estimation in outdoor and indoor scenarios. In comparison to the currently top-performing methods that rely on 2D to 3D matching, we propose a model that can directly regress the camera…

计算机视觉与模式识别 · 计算机科学 2021-08-17 Tony Ng , Adrian Lopez-Rodriguez , Vassileios Balntas , Krystian Mikolajczyk

This work targets to construct a robust human pose prior. However, it remains a persistent challenge due to biomechanical constraints and diverse human movements. Traditional priors like VAEs and NDFs often exhibit shortcomings in realism…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Junzhe Lu , Jing Lin , Hongkun Dou , Ailing Zeng , Yue Deng , Yulun Zhang , Haoqian Wang

Three-dimensional (3D) human pose estimation using a monocular camera has gained increasing attention due to its ease of implementation and the abundance of data available from daily life. However, owing to the inherent depth ambiguity in…

计算机视觉与模式识别 · 计算机科学 2024-01-09 Danqi Yan , Qing Gao , Yuepeng Qian , Xinxing Chen , Chenglong Fu , Yuquan Leng

Existing volumetric neural rendering techniques, such as Neural Radiance Fields (NeRF), face limitations in synthesizing high-quality novel views when the camera poses of input images are imperfect. To address this issue, we propose a novel…

计算机视觉与模式识别 · 计算机科学 2023-10-17 Hongyu Fu , Xin Yu , Lincheng Li , Li Zhang