ICCV 2025 论文列表

International Conference on Computer Vision

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ULTHO: Ultra-Lightweight yet Efficient Hyperparameter Optimization in Deep Reinforcement Learning

Mingqi Yuan, Bo Li, Xin Jin, Wenjun Zeng

展开摘要

Hyperparameter optimization (HPO) is a billion-dollar problem in machine learning, which significantly impacts the training efficiency and model performance. However, achieving efficient and robust HPO in deep reinforcement learning (RL) is consistently challenging due to its high non-stationarity and computational cost. To tackle this problem, existing approaches attempt to adapt common HPO techniques (e.g., population-based training or Bayesian optimization) to the RL scenario. However, they remain sample-inefficient and computationally expensive, which cannot facilitate a wide range of applications. In this paper, we propose ULTHO, an ultra-lightweight yet powerful framework for fast HPO in deep RL within single runs. Specifically, we formulate the HPO process as a multi-armed bandit with clustered arms (MABC) and link it directly to long-term return optimization. ULTHO also provides a quantified and statistical perspective to filter the HPs efficiently. We test ULTHO on benchmarks including ALE, Procgen, MiniGrid, and PyBullet. Extensive experiments demonstrate that the ULTHO can achieve superior performance with a simple architecture, contributing to the development of advanced and automated RL systems.

Poster
UKBOB: One Billion MRI Labeled Masks for Generalizable 3D Medical Image Segmentation

Emmanuelle Bourigault, Amir Jamaludin, Abdullah Hamdi

展开摘要

In the medical imaging domain, it is a fundamental challenge to collect large-scale labeled data due to privacy, involved logistics, and the high cost of labeling medical images. In this work, we present the UK Biobank Organs and Bones (UKBOB), the largest labeled dataset of body organs of 51,761 MRI 3D samples (17.9 M 2D images) and a total of more than 1.37 billion 2D segmentation masks of 72 organs based on the UK Biobank MRI dataset. We utilize automatic labeling, filter the labels with organ-specific filters, and manually annotate a subset of 300 MRIs with 11 abdominal classes to validate the quality (UKBOB-manual). This approach allows for scaling up the dataset collection while maintaining confidence in the labels. We further confirm the validity of the labels by the zero-shot generalization of trained models on the filtered UKBOB to other small labeled datasets from a similar domain ( _E.g._ abdominal MRI). To further elevate the effect of the noisy labels, we propose a novel Entropy Test-time Adaptation (ETTA) to refine the segmentation output. We use UKBOB to train a foundation model (_Swin-BOB_) for 3D medical image segmentation based on Swin-UNetr, achieving state-of-the-art results in several benchmarks in 3D medical imaging, including BRATS brain MRI tumour challenge (+0.4% improvement), and BTCV abdominal CT scan benchmark (+1.3% improvement). Pre-trained model and our filtered labels will be made available with the UK Biobank.

Poster
UIPro: Unleashing Superior Interaction Capability For GUI Agents

Hongxin Li, Jingran Su, Jingfan Chen, Zheng Ju, Yuntao Chen, Qing Li, Zhaoxiang Zhang

展开摘要

Building autonomous agents that perceive and operate graphical user interfaces (GUIs) like humans has long been a vision in the field of artificial intelligence. Central to these agents is the capability for GUI interaction, which involves GUI understanding and planning capabilities. Existing methods have tried developing GUI agents based on the multi-modal comprehension ability of vision-language models (VLMs). However, the limited scenario, insufficient size, and heterogeneous action spaces hinder the progress of building generalist GUI agents. To resolve these issues, this paper proposes UIPro, a novel generalist GUI agent trained with extensive multi-platform and multi-task GUI interaction data, coupled with a unified action space. We first curate a comprehensive dataset encompassing 20.6 million GUI understanding tasks to pre-train UIPro, granting it a strong GUI grounding capability, which is key to downstream GUI agent tasks. Subsequently, we establish a unified action space to harmonize heterogeneous GUI agent task datasets and produce a merged dataset to foster the action prediction ability of UIPro via continued fine-tuning. Experimental results demonstrate UIPro's superior performance across multiple GUI task benchmarks on various platforms, highlighting the effectiveness of our approach.

Poster
UIP2P: Unsupervised Instruction-based Image Editing via Edit Reversibility Constraint

Enis Simsar, Alessio Tonioni, Yongqin Xian, Thomas Hofmann, Federico Tombari

展开摘要

We propose an unsupervised instruction-based image editing approach that removes the need for ground-truth edited images during training. Existing methods rely on supervised learning with triplets of input images, ground-truth edited images, and edit instructions. These triplets are typically generated either by existing editing methods--introducing biases--or through human annotations, which are costly and limit generalization. Our approach addresses these challenges by introducing a novel editing mechanism called Edit Reversibility Constraint (ERC), which applies forward and reverse edits in one training step and enforces alignment in image, text, and attention spaces. This allows us to bypass the need for ground-truth edited images and unlock training for the first time on datasets comprising either real image-caption pairs or image-caption-instruction triplets. We empirically show that our approach performs better across a broader range of edits with high-fidelity and precision. By eliminating the need for pre-existing datasets of triplets, reducing biases associated with current methods, and proposing ERC, our work represents a significant advancement in unblocking scaling of instruction-based image editing.

Poster
UINavBench: A Framework for Comprehensive Evaluation of Interactive Digital Agents

Harsh Agrawal, Eldon Schoop, Xinlei Pan, Anuj Mahajan, Ari Seff, Di Feng, Ruijia Cheng, Andres Romero Mier Y Teran, Esteban Gomez, Abhishek Sundararajan, Forrest Huang, Amanda Swearngin, Mohana Prasad Sathya Moorthy, Jeff Nichols, Alexander Toshev

展开摘要

We build a comprehensive online evaluation benchmark for language-conditioned multi-step task execution on mobile interfaces. Our benchmark strives to evaluate the multi-step planning, reasoning, and visual grounding capabilities of agents, using mobile user interfaces as a concrete testbed. To build diverse, challenging tasks that reflect real-world use cases, we propose an exhaustive taxonomy that allows us to measure progress along multiple decision-making abilities including multi-step planning, visual perception, action grounding, and using memory or external knowledge. We also highlight important factors such as statefulness, safety, and evaluation complexity that are key to design tasks that can be reliably evaluated. Using this taxonomy, we design 116 tasks across 36 unique apps. Through an automatic framework, we stage and evaluate several natural baselines with different input representations and planning strategies. We show that the best-performing agent achieves 40% success on our benchmark. We further measure agents' abilities to plan, ground, and utilize world knowledge highlighting areas of improvement.

Poster
UDC-VIT: A Real-World Video Dataset for Under-Display Cameras

Kyusu Ahn, Jisoo Kim, Sangik Lee, Hyungyu Lee, Byeonghyun Ko, Chanwoo Park, Jaejin Lee

展开摘要

Even though an Under-Display Camera (UDC) is an advanced imaging system, the display panel significantly degrades captured images or videos, introducing low transmittance, blur, noise, and flare issues. Tackling such issues is challenging because of the complex degradation of UDCs, including diverse flare patterns. However, no dataset contains videos of real-world UDC degradation. In this paper, we propose a real-world UDC video dataset called UDC-VIT. Unlike existing datasets, UDC-VIT exclusively includes human motions for facial recognition. We propose a video-capturing system to acquire clean and UDC-degraded videos of the same scene simultaneously. Then, we align a pair of captured videos frame by frame, using discrete Fourier transform (DFT). We compare UDC-VIT with six representative UDC still image datasets and two existing UDC video datasets. Using six deep-learning models, we compare UDC-VIT and an existing synthetic UDC video dataset. The results indicate the ineffectiveness of models trained on earlier synthetic UDC video datasets, as they do not reflect the actual characteristics of UDC-degraded videos. We also demonstrate the importance of effective UDC restoration by evaluating face recognition accuracy concerning PSNR, SSIM, and LPIPS scores. UDC-VIT is available at our official GitHub repository.

Poster
UAVScenes: A Multi-Modal Dataset for UAVs

Sijie Wang, Siqi Li, Yawei Zhang, Shangshu Yu, Shenghai Yuan, Rui She, Quanjiang Guo, JinXuan Zheng, Ong Kang Howe, Leonrich Chandra, Shrivarshann Srijeyan, Aditya Sivadas, Toshan Aggarwal, Heyuan Liu, Hongming Zhang, Chujie Chen, Junyu Jiang, Lihua Xie, Wee Peng Tay

展开摘要

Multi-modal perception is essential for unmanned aerial vehicle (UAV) operations, as it enables a comprehensive understanding of the UAVs' surrounding environment. However, most existing multi-modal UAV datasets are primarily biased toward localization and 3D reconstruction tasks, or only support map-level semantic segmentation due to the lack of frame-wise annotations for both camera images and LiDAR point clouds. This limitation prevents them from being used for high-level scene understanding tasks. To address this gap and advance multi-modal UAV perception, we introduce UAVScenes, a large-scale dataset designed to benchmark various tasks across both 2D and 3D modalities. Our benchmark dataset is built upon the well-calibrated multi-modal UAV dataset MARS-LVIG, originally developed only for simultaneous localization and mapping (SLAM). We enhance this dataset by providing manually labeled semantic annotations for both frame-wise images and LiDAR point clouds, along with accurate 6-degree-of-freedom (6-DoF) poses. These additions enable a wide range of UAV perception tasks, including segmentation, depth estimation, 6-DoF localization, place recognition, and novel view synthesis (NVS). Our dataset is available at https://github.com/sijieaaa/UAVScenes

Poster
U-ViLAR: Uncertainty-Aware Visual Localization for Autonomous Driving via Differentiable Association and Registration

Xiaofan Li, Zhihao Xu, Chenming Wu, Zhao Yang, Yumeng Zhang, Jiang-Jiang Liu, Haibao Yu, Xiaoqing Ye, Yuan Wang, Shirui Li, Xun Sun, Ji Wan, Jun Wang

展开摘要

Accurate localization using visual information is a critical yet challenging task, especially in urban environments where nearby buildings and construction sites significantly degrade GNSS (Global Navigation Satellite System) signal quality. This issue underscores the importance of visual localization techniques in scenarios where GNSS signals are unreliable. This paper proposes U-ViLAR, a novel uncertainty-aware visual localization framework designed to address these challenges while enabling adaptive localization using high-definition (HD) maps or navigation maps. Specifically, our method first extracts features from the input visual data and maps them into Bird's-Eye-View (BEV) space to enhance spatial consistency with the map input. Subsequently, we introduce: a) Perceptual Uncertainty-guided Association, which mitigates errors caused by perception uncertainty, and b) Localization Uncertainty-guided Registration, which reduces errors introduced by localization uncertainty. By effectively balancing the coarse-grained large-scale localization capability of association with the fine-grained precise localization capability of registration, our approach achieves robust and accurate localization. Experimental results demonstrate that our method achieves state-of-the-art performance across multiple localization tasks. Furthermore, our model has undergone rigorous testing on large-scale autonomous driving fleets and has demonstrated stable performance in various challenging urban scenarios.

Poster
Two Losses, One Goal: Balancing Conflict Gradients for Semi-supervised Semantic Segmentation

Rui Sun, Huayu Mai, Wangkai Li, Yujia Chen, Yuan Wang

展开摘要

Semi-supervised semantic segmentation has attracted considerable attention as it alleviates the need for extensive pixel-level annotations. However, existing methods often overlook the potential optimization conflict between supervised and unsupervised learning objectives, leading to suboptimal performance. In this paper, we identify this under-explored issue and propose a novel Pareto Optimization Strategy (POS) to tackle it. POS aims to find a descent gradient direction that benefits both learning objectives, thereby facilitating model training. By dynamically assigning weights to the gradients at each iteration based on the model's learning status, POS effectively reconciles the intrinsic tension between the two objectives. Furthermore, we analyze POS from the perspective of gradient descent in random batch sampling and propose the Magnitude Enhancement Operation (MEO) to further unleash its potential by considering both direction and magnitude during gradient integration. Extensive experiments on challenging benchmarks demonstrate that integrating POS into existing semi-supervised segmentation methods yields consistent improvements across different data splits and architectures (CNN, Transformer), showcasing its effectiveness.

Poster
TurboVSR: Fantastic Video Upscalers and Where to Find Them

Zhongdao Wang, Guodongfang Zhao, Jingjing Ren, Bailan Feng, Shifeng Zhang, Wenbo Li

展开摘要

Diffusion-based generative models have demonstrated exceptional promise in the video super-resolution (VSR) task, achieving a substantial advancement in detail generation relative to prior methods. However, these approaches face significant computational efficiency challenges. For instance, current techniques may require tens of minutes to super-resolve a mere 2-second, 1080p video. In this paper, we present TurboVSR, an ultra-efficient diffusion-based video super-resolution model. Our core design comprises three key aspects: (1) We employ an autoencoder with a high compression ratio of 32x32x8 to reduce the number of tokens. (2) Highly compressed latents pose substantial challenges for training. We introduce factorized conditioning to mitigate the learning complexity: we first learn to super-resolve the initial frame; subsequently, we condition the super-resolution of the remaining frames on the high-resolution initial frame and the low-resolution subsequent frames. (3) We convert the pre-trained diffusion model to a shortcut model to enable fewer sampling steps, further accelerating inference. As a result, TurboVSR performs on par with state-of-the-art VSR methods, while being 100+ times faster, taking only 7 seconds to process a 2-second long 1080p video. TurboVSR also supports image resolution by considering image as a one-frame video. Our efficient design makes SR beyond 1080p possible, results on 4K (3648x2048) image SR show surprising fine details.

Poster
TurboTrain: Towards Efficient and Balanced Multi-Task Learning for Multi-Agent Perception and Prediction

Zewei Zhou, Seth Z. Zhao, Tianhui Cai, Zhiyu Huang, Bolei Zhou, Jiaqi Ma

展开摘要

End-to-end training of multi-agent systems offers significant advantages in improving multi-task performance. However, training such models remains challenging and requires extensive manual design and monitoring. In this work, we introduce TurboTrain, a novel and efficient training framework for multi-agent perception and prediction. TurboTrain comprises two key components: a multi-agent spatiotemporal pretraining scheme based on masked reconstruction learning and a balanced multi-task learning strategy based on gradient conflict suppression. By streamlining the training process, our framework eliminates the need for manually designing and tuning complex multi-stage training pipelines, substantially reducing training time and improving performance. We evaluate TurboTrain on a real-world cooperative driving dataset, V2XPnP-Seq, and demonstrate that it further improves the performance of state-of-the-art multi-agent perception and prediction models. Our results highlight that pretraining effectively captures spatiotemporal multi-agent features and significantly benefits downstream tasks. Moreover, the proposed balanced multi-task learning strategy enhances detection and prediction.

Poster
TurboReg: TurboClique for Robust and Efficient Point Cloud Registration

Shaocheng Yan, Pengcheng Shi, Zhenjun Zhao, Kaixin Wang, Kuang Cao, Ji Wu, Jiayuan Li

展开摘要

Robust estimation is essential in correspondence-based Point Cloud Registration (PCR). Existing methods using maximal clique search in compatibility graphs achieve high recall but suffer from exponential time complexity, limiting their use in time-sensitive applications. To address this challenge, we propose a fast and robust estimator, TurboReg, built upon a novel lightweight clique, TurboClique, and a highly parallelizable Pivot-Guided Search (PGS) algorithm. First, we define the TurboClique as a 3-clique within a highly-constrained compatibility graph. The lightweight nature of the 3-clique allows for efficient parallel searching, and the highly-constrained compatibility graph ensures robust spatial consistency for stable transformation estimation. Next, PGS selects matching pairs with high SC^2 scores as pivots, effectively guiding the search toward TurboCliques with higher inlier ratios. Moreover, the PGS algorithm has linear time complexity and is significantly more efficient than the maximal clique search with exponential time complexity. Extensive experiments show that TurboReg achieves state-of-the-art performance across multiple real-world datasets, with substantial speed improvements. For example, on the 3DMatch+FCGF dataset, TurboReg (1K) operates 208.22xfaster than 3DMAC while also achieving higher recall. Our code is accessible at \href https://github.com/Laka-3DV/TurboReg \texttt TurboReg .

Poster
Turbo2K: Towards Ultra-Efficient and High-Quality 2K Video Synthesis

Jingjing Ren, Wenbo Li, Zhongdao Wang, Haoze Sun, Bangzhen Liu, Haoyu Chen, Jiaqi Xu, Aoxue Li, Shifeng Zhang, Bin Shao, Yong Guo, Lei Zhu

展开摘要

Demand for 2K video synthesis is rising with increasing consumer expectations for ultra-clear visuals.While diffusion transformers (DiTs) have demonstrated remarkable capabilities in high-quality video generation, scaling them to 2K resolution remains computationally prohibitive due to quadratic growth in memory and processing costs.In this work, we propose Turbo2K, an efficient and practical framework for generating detail-rich 2K videos while significantly improving training and inference efficiency. First, Turbo2K operates in a highly compressed latent space, reducing computational complexity and memory footprint, making high-resolution video synthesis feasible. However, the high compression ratio of the VAE and limited model size impose constraints on generative quality. To mitigate this, we introduce a knowledge distillation strategy that enables a smaller student model to inherit the generative capacity of a larger, more powerful teacher model. Our analysis reveals that, despite differences in latent spaces and architectures, DiTs exhibit structural similarities in their internal representations, facilitating effective knowledge transfer.Second, we design a hierarchical two-stage synthesis framework that first generates multi-level feature at lower resolutions before guiding high-resolution video generation. This approach ensures structural coherence and fine-grained detail refinement while eliminating redundant encoding-decoding overhead, further enhancing computational efficiency.Turbo2K achieves state-of-the-art efficiency, generating 5-second, 24fps, 2K videos with significantly reduced computational cost. Compared to existing methods, Turbo2K is up to 20xfaster for inference, making high-resolution video generation more scalable and practical for real-world applications.

Poster
Tune-Your-Style: Intensity-tunable 3D Style Transfer with Gaussian Splatting

Yian Zhao, Rushi Ye, Ruochong Zheng, Zesen Cheng, Chaoran Feng, Jiashu Yang, Pengchong Qiao, Chang Liu, Jie Chen

展开摘要

3D style transfer refers to the artistic stylization of 3D assets based on reference style images. Recently, 3DGS-based stylization methods have drawn considerable attention, primarily due to their markedly enhanced training and rendering speeds. However, a vital challenge for 3D style transfer is to strike a balance between the content and the patterns and colors of the style. Although the existing methods strive to achieve relatively balanced outcomes, the fixed-output paradigm struggles to adapt to the diverse content-style balance requirements from different users. In this work, we introduce a creative intensity-tunable 3D style transfer paradigm, dubbed Tune-Your-Style, which allows users to flexibly adjust the style intensity injected into the scene to match their desired content-style balance, thus enhancing the customizability of 3D style transfer. To achieve this goal, we first introduce Gaussian neurons to explicitly model the style intensity and parameterize a learnable style tuner to achieve intensity-tunable style injection. To facilitate the learning of tunable stylization, we further propose the tunable stylization guidance, which obtains multi-view consistent stylized views from diffusion models through cross-view style alignment, and then employs a two-stage optimization strategy to provide stable and efficient guidance by modulating the balance between full-style guidance from the stylized views and zero-style guidance from the initial rendering. Extensive experiments demonstrate that our method not only delivers visually appealing results, but also exhibits flexible customizability for 3D style transfer. Project page is available at https://zhao-yian.github.io/TuneStyle.

Poster
TryOn-Refiner: Conditional Rectified-flow-based TryOn Refiner for More Accurate Detail Reconstruction

Wen Qian

展开摘要

Diffusion techniques has significantly advanced the development of virtual try-on. However, these methods often struggle to preserve intricate details, such as patterns, texts and faces, etc. To tackle this challenge, we introduce a plug-and-play module named as "TryOn-Refiner", which can refine the detailed artifacts for any try-on results in only 1~10 steps.Instead of the previous diffusion-based refine module, TryOn-Refiner employs the conditional rectified-flow-based mechanism for better leveraging prior information from coarse try-on results. Specifically, TryOn-Refiner transforms the traditional refinement framework from a noise-to-image paradigm into a flow mapping framework that directly maps coarse images to refined images, essentially avoiding introducing uncertainty in the refinement process.Moreover, we propose a training data construction pipeline, which can efficiently generate paired training data and includes a data smoothing strategy to overcome the blocking artifact.Extended experimental results demonstrate our TryOn-Refiner consistently improves performance with only a few inference steps for all evaluated existing try-on methods.

Poster
TruthPrInt: Mitigating Large Vision-Language Models Object Hallucination Via Latent Truthful-Guided Pre-Intervention

Jinhao Duan, Fei Kong, Hao Cheng, James Diffenderfer, Bhavya Kailkhura, Lichao Sun, Xiaofeng Zhu, Xiaoshuang Shi, Kaidi Xu

展开摘要

Object Hallucination (OH) has been acknowledged as one of the major trustworthy challenges in Large Vision-Language Models (LVLMs). Recent advancements in Large Language Models (LLMs) indicate that internal states, such as hidden states, encode the "overall truthfulness" of generated responses. However, it remains under-explored how internal states in LVLMs function and whether they could serve as "per-token" hallucination indicators, which is essential for mitigating OH. In this paper, we first conduct an in-depth exploration of LVLM internal states in relation to OH issues and discover that (1) LVLM internal states are high-specificity per-token indicators of hallucination behaviors. Moreover, (2) different LVLMs encode universal patterns of hallucinations in common latent subspaces, indicating that there exist "generic truthful directions" shared by various LVLMs. Based on these discoveries, we propose Truthful-Guided Pre-Intervention (TruthPrInt) that first learns the truthful direction of LVLM decoding and then applies truthful-guided inference-time intervention during LVLM decoding. We further propose ComnHallu to enhance both cross-LVLM and cross-data hallucination detection transferability by constructing and aligning hallucination latent subspaces. We evaluate TruthPrInt in extensive experimental settings, including in-domain and out-of-domain scenarios, over popular LVLMs and OH benchmarks. Experimental results indicate that TruthPrInt significantly outperforms state-of-the-art methods.

Poster
TrustMark: Robust Watermarking and Watermark Removal for Arbitrary Resolution Images

Tu Bui, Shruti Agarwal, John Collomosse

展开摘要

Imperceptible digital watermarking is important in copyright protection, misinformation prevention, and responsible generative AI. We propose TrustMark - a watermarking method that leverages a spatio-spectral loss function and a 1x1 convolution layer to enhance encoding quality. TrustMark is robust against both in-place and out-of-place perturbations while maintaining image quality above 43 dB. Additionally, we propose ReMark, a watermark removal method designed for re-watermarking, along with a simple yet effective algorithm that enables both TrustMark and ReMark to operate across arbitrary resolutions. Our methods achieve state-of-art performance on 3 benchmarks.

Poster
Trust but Verify: Programmatic VLM Evaluation in the Wild

Viraj Prabhu, Senthil Purushwalkam, An Yan, Caiming Xiong, Ran Xu

展开摘要

Vision-Language Models (VLMs) frequently hallucinate responses to visual queries, undermining their reliability for critical applications. However, quantifying the effect of such hallucinations in free-form responses to open-ended queries requires visually verifying each claim within the response, which is highly challenging. We propose Programmatic VLM Evaluation (PROVE), a new benchmarking paradigm for evaluating VLM responses to open-ended queries. To construct PROVE, we provide a large language model with a high-fidelity scene-graph representation constructed from a detailed image caption, and prompt it to generate i) diverse and challenging question-answer (QA) pairs that test a range of image understanding capabilities, and ii) programs that can be executed over the scene graph object to verify each QA pair. We thus construct a benchmark of 10.6k challenging but grounded visual QA pairs. Next, we propose a scene graph-based evaluation framework to programmatically measure both the helpfulness and truthfulness of a free-form model response without relying on subjective LLM judgments. We extensively benchmark a range of VLMs on PROVE, and uncover a concerning tradeoff where models that provide more helpful responses often hallucinate more, whereas truthful models tend to be less informative. PROVE serves as a foundation for developing next-generation VLMs that balance helpfulness with truthfulness. A snapshot of our dataset is available at https://prove-explorer-anon.netlify.app/.

Poster
Trokens: Semantic-Aware Relational Trajectory Tokens for Few-Shot Action Recognition

Pulkit Kumar, Shuaiyi Huang, Matthew Walmer, Sai Saketh Rambhatla, Abhinav Shrivastava

展开摘要

Video understanding requires effective modeling of both motion and appearance information, particularly for few-shot action recognition. While recent advances in point tracking have been shown to improve few-shot action recognition, two fundamental challenges persist: selecting informative points to track and effectively modeling their motion patterns. We present Trokens, a novel approach that transforms trajectory points into semantic-aware relational tokens for action recognition. First, we introduce a semantic-aware sampling strategy to adaptively distribute tracking points based on object scale and semantic relevance. Second, we develop a motion modeling framework that captures both intra-trajectory dynamics through the Histogram of Oriented Displacements (HoD) and inter-trajectory relationships to model complex action patterns. Our approach effectively combines these trajectory tokens with semantic features to enhance appearance features with motion information, achieving state-of-the-art performance across six diverse few-shot action recognition benchmarks: Something-Something-V2 (both full and small splits), Kinetics, UCF101, HMDB51, and FineGym.

Poster
Trial-Oriented Visual Rearrangement

Yuyi Liu, Xinhang Song, Tianliang Qi, Shuqiang Jiang

展开摘要

Towards visual room rearrangement for embodied agents, this paper tackles the intricate challenge of restoring a disarrayed scene configuration to its intended goal state. The task necessitates a range of sophisticated capabilities, including efficient spatial navigation, precise and accurate object interaction, sensitive scene change detection, and meticulous restoration techniques. The inherent complexity of this endeavor stems from the diverse nature of potential object changes, encompassing movements within the space, alterations in appearance, and changes in existence--where objects may be introduced or removed from the scene. Previous methods, either end-to-end reinforcement learning or modular approaches, struggle with handling these changes in a unified manner due to the heterogeneous nature of the inference spaces. To address this, this paper proposes a Trial-Oriented Visual Rearrangement (TOR) framework, which leverages the principles of stronger embodiment to prune the joint reasoning space and identify a smaller shared space for processing various object changes. TOR maintains a differential point cloud representation to capture environmental changes and uses two core mechanisms, assessment and refinement, to iteratively restore the scene to the goal state. Experimental results demonstrate the effectiveness of TOR in restoring both object movement and appearance changes and show its generalization to complex multi-room environments.

Poster