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Zhengxin Li

5 accepted papers

2025

IR3D-Bench: Evaluating Vision-Language Model Scene Understanding as Agentic Inverse Rendering

NeurIPS 2025poster

Vision-language models (VLMs) excel at descriptive tasks, but whether they truly understand scenes from visual observations remains uncertain. We introduce IR3D-Bench, a benchmark challenging VLMs to demonstrate understanding through active creation rather than passive recognition. Grounded in the a…

Cited by 0SourceScholar
2024

MeshSegmenter: Zero-Shot Mesh Segmentation via Texture Synthesis

ECCV 2024poster

"We present MeshSegmenter, a simple yet effective framework designed for zero-shot 3D semantic segmentation. This model successfully extends the powerful capabilities of 2D segmentation models to 3D meshes, delivering accurate 3D segmentation across diverse meshes and segment descriptions. Specifica…

2022

TransRAC: Encoding Multi-Scale Temporal Correlation With Transformers for Repetitive Action Counting

CVPR 2022oral

Counting repetitive actions are widely seen in human activities such as physical exercise. Existing methods focus on performing repetitive action counting in short videos, which is tough for dealing with longer videos in more realistic scenarios. In the data-driven era, the degradation of such gener…

Cited by 70PDFcodeScholar
2021

Crowd Counting With Partial Annotations in an Image

ICCV 2021poster

To fully leverage the data captured from different scenes with different view angles while reducing the annotation cost, this paper studies a novel crowd counting setting, i.e. only using partial annotations in each image as training data. Inspired by the repetitive patterns in the annotated and una…

Cited by 57PDFcodeScholar
2019

PPGNet: Learning Point-Pair Graph for Line Segment Detection

CVPR 2019poster

In this paper, we present a novel framework to detect line segments in man-made environments. Specifically, we propose to describe junctions, line segments and relationships between them with a simple graph, which is more structured and informative than end-point representation used in existing line…

Cited by 110PDFcodeScholar