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Zixu Zhao

9 accepted papers

2024

PointPatchMix: Point Cloud Mixing with Patch Scoring

AAAI 2024technical

Data augmentation is an effective regularization strategy for mitigating overfitting in deep neural networks, and it plays a crucial role in 3D vision tasks, where the point cloud data is relatively limited. While mixing-based augmentation has shown promise for point clouds, previous methods mix poi…

Cited by 11SourcePDFScholar
2024

Rethinking The Training And Evaluation of Rich-Context Layout-to-Image Generation

NeurIPS 2024poster

Recent advancements in generative models have significantly enhanced their capacity for image generation, enabling a wide range of applications such as image editing, completion and video editing. A specialized area within generative modeling is layout-to-image (L2I) generation, where predefined lay…

2023

Unsupervised Open-Vocabulary Object Localization in Videos

ICCV 2023poster

In this paper, we show that recent advances in video representation learning and pre-trained vision-language models allow for substantial improvements in self-supervised video object localization. We propose a method that first localizes objects in videos via a slot attention approach and then assig…

Cited by 7PDFcodeScholar
2022

Pseudo-label Guided Cross-video Pixel Contrast for Robotic Surgical Scene Segmentation with Limited Annotations

IROS 2022poster

Surgical scene segmentation is fundamentally crucial for prompting cognitive assistance in robotic surgery. However, pixel-wise annotating surgical video in a frame-by-frame manner is expensive and time consuming. To greatly reduce the labeling burden, in this work, we study semi-supervised scene se…

Cited by 6SourcecodeScholar
2022

TraSeTR: Track-to-Segment Transformer with Contrastive Query for Instance-level Instrument Segmentation in Robotic Surgery

ICRA 2022poster

Surgical instrument segmentation - in general a pixel classification task - is fundamentally crucial for promoting cognitive intelligence in robot-assisted surgery (RAS). However, previous methods are struggling with discriminating instrument types and instances. To address above issues, we explore…

Cited by 49SourceScholar
2021

Modelling Neighbor Relation in Joint Space-Time Graph for Video Correspondence Learning

ICCV 2021poster

This paper presents a self-supervised method for learning reliable visual correspondence from unlabeled videos. We formulate the correspondence as finding paths in a joint space-time graph, where nodes are grid patches sampled from frames, and are linked by two type of edges: (i) neighbor relations…

Cited by 21PDFScholar
2021

One to Many: Adaptive Instrument Segmentation via Meta Learning and Dynamic Online Adaptation in Robotic Surgical Video

ICRA 2021poster

Surgical instrument segmentation in robot-assisted surgery (RAS) - especially that using learning-based models - relies on the assumption that training and testing videos are sampled from the same domain. However, it is impractical and expensive to collect and annotate sufficient data from every new…

Cited by 26SourceScholar