activity
20222026
most citedPointNeXt: Revisiting PointNet++ with Improved Training and Scaling Strategies

418 citations · 518 across the 15 of their papers we have counts for

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12 papers · 1 filter

cs.CV2026

EgoPlay: Event-Triggered Video Editing for Egocentric Streams

Jinjie Mai, Gordon Guocheng Qian, Willi Menapace +8

We introduce EgoPlay, an event-triggered video-to-video editor for egocentric streams, obtained by fine-tuning a pretrained V2V diffusion transformer on event-conditioned data buil…

cs.CV2025

EasyV2V: A High-quality Instruction-based Video Editing Framework

Jinjie Mai, Chaoyang Wang, Guocheng Gordon Qian +5

While image editing has advanced rapidly, video editing remains less explored, facing challenges in consistency, control, and generalization. We study the design space of data, arc…

cs.CV2025

Can Video Diffusion Model Reconstruct 4D Geometry?

Jinjie Mai, Wenxuan Zhu, Haozhe Liu +4

Reconstructing dynamic 3D scenes (i.e., 4D geometry) from monocular video is an important yet challenging problem. Conventional multiview geometry-based approaches often struggle w…

cs.CV2025

4D-Bench: Benchmarking Multi-modal Large Language Models for 4D Object Understanding

Wenxuan Zhu, Bing Li, Cheng Zheng +8

Multimodal Large Language Models (MLLMs) have demonstrated impressive 2D image/video understanding capabilities. However, there are no publicly standardized benchmarks to assess th…

cs.CV2024★ 1 cited

TrackNeRF: Bundle Adjusting NeRF from Sparse and Noisy Views via Feature Tracks

Jinjie Mai, Wenxuan Zhu, Sara Rojas +6

Neural radiance fields (NeRFs) generally require many images with accurate poses for accurate novel view synthesis, which does not reflect realistic setups where views can be spars…

cs.CV2024

Hybrid Structure-from-Motion and Camera Relocalization for Enhanced Egocentric Localization

Jinjie Mai, Abdullah Hamdi, Silvio Giancola +2

We built our pipeline EgoLoc-v1, mainly inspired by EgoLoc. We propose a model ensemble strategy to improve the camera pose estimation part of the VQ3D task, which has been proven…

cs.CV2024★ 1 cited

Vivid-ZOO: Multi-View Video Generation with Diffusion Model

Bing Li, Cheng Zheng, Wenxuan Zhu +4

While diffusion models have shown impressive performance in 2D image/video generation, diffusion-based Text-to-Multi-view-Video (T2MVid) generation remains underexplored. The new c…

cs.CV2024★ 3 cited

GES: Generalized Exponential Splatting for Efficient Radiance Field Rendering

Abdullah Hamdi, Luke Melas-Kyriazi, Jinjie Mai +5

Advancements in 3D Gaussian Splatting have significantly accelerated 3D reconstruction and generation. However, it may require a large number of Gaussians, which creates a substant…

cs.CV2023★ 75 cited

Magic123: One Image to High-Quality 3D Object Generation Using Both 2D and 3D Diffusion Priors

Guocheng Qian, Jinjie Mai, Abdullah Hamdi +8

We present Magic123, a two-stage coarse-to-fine approach for high-quality, textured 3D meshes generation from a single unposed image in the wild using both2D and 3D priors. In the…

cs.CV2022★ 1 cited

EgoLoc: Revisiting 3D Object Localization from Egocentric Videos with Visual Queries

Jinjie Mai, Abdullah Hamdi, Silvio Giancola +2

With the recent advances in video and 3D understanding, novel 4D spatio-temporal methods fusing both concepts have emerged. Towards this direction, the Ego4D Episodic Memory Benchm…

cs.CV2022★ 1 cited

Estimating more camera poses for ego-centric videos is essential for VQ3D

Jinjie Mai, Chen Zhao, Abdullah Hamdi +2

Visual queries 3D localization (VQ3D) is a task in the Ego4D Episodic Memory Benchmark. Given an egocentric video, the goal is to answer queries of the form "Where did I last see o…

cs.CV2022★ 418 cited

PointNeXt: Revisiting PointNet++ with Improved Training and Scaling Strategies

Guocheng Qian, Yuchen Li, Houwen Peng +4

PointNet++ is one of the most influential neural architectures for point cloud understanding. Although the accuracy of PointNet++ has been largely surpassed by recent networks such…