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Autonomous robots that interact with their environment require a detailed semantic scene model. For this, volumetric semantic maps are frequently used. The scene understanding can further be improved by including object-level information in…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Julian Hau , Simon Bultmann , Sven Behnke

Video retrieval is a challenging research topic bridging the vision and language areas and has attracted broad attention in recent years. Previous works have been devoted to representing videos by directly encoding from frame-level…

Computer Vision and Pattern Recognition · Computer Science 2020-06-17 Zerun Feng , Zhimin Zeng , Caili Guo , Zheng Li

Panoramic Narrative Grounding (PNG) is an emerging visual grounding task that aims to segment visual objects in images based on dense narrative captions. The current state-of-the-art methods first refine the representation of phrase by…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Yiming Lin , Xiao-Bo Jin , Qiufeng Wang , Kaizhu Huang

Temporal sentence grounding in videos aims to detect and localize one target video segment, which semantically corresponds to a given sentence. Existing methods mainly tackle this task via matching and aligning semantics between a sentence…

Computer Vision and Pattern Recognition · Computer Science 2019-11-01 Yitian Yuan , Lin Ma , Jingwen Wang , Wei Liu , Wenwu Zhu

Unlike Object Detection, Visual Grounding task necessitates the detection of an object described by complex free-form language. To simultaneously model such complex semantic and visual representations, recent state-of-the-art studies adopt…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Weitai Kang , Luowei Zhou , Junyi Wu , Changchang Sun , Yan Yan

Temporal relational reasoning, the ability to link meaningful transformations of objects or entities over time, is a fundamental property of intelligent species. In this paper, we introduce an effective and interpretable network module, the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-26 Bolei Zhou , Alex Andonian , Aude Oliva , Antonio Torralba

3D object detection plays an important role in autonomous driving and other robotics applications. However, these detectors usually require training on large amounts of annotated data that is expensive and time-consuming to collect.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-08 Jianren Wang , Haiming Gang , Siddharth Ancha , Yi-Ting Chen , David Held

For robots to understand human instructions and perform meaningful tasks in the near future, it is important to develop learned models that comprehend referential language to identify common objects in real-world 3D scenes. In this paper,…

Robotics · Computer Science 2021-11-08 Junha Roh , Karthik Desingh , Ali Farhadi , Dieter Fox

We present RoarNet, a new approach for 3D object detection from a 2D image and 3D Lidar point clouds. Based on two-stage object detection framework with PointNet as our backbone network, we suggest several novel ideas to improve 3D object…

Computer Vision and Pattern Recognition · Computer Science 2018-11-12 Kiwoo Shin , Youngwook Paul Kwon , Masayoshi Tomizuka

3D scene understanding is important for robots to interact with the 3D world in a meaningful way. Most previous works on 3D scene understanding focus on recognizing geometrical or semantic properties of the scene independently. In this…

Computer Vision and Pattern Recognition · Computer Science 2017-06-01 Yu Xiang , Dieter Fox

Spatial reasoning, the ability to ground language in 3D understanding, remains a persistent challenge for Vision-Language Models (VLMs). We identify two fundamental bottlenecks: inadequate 3D understanding capabilities stemming from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Yejie Guo , Yunzhong Hou , Wufei Ma , Meng Tang , Ming-Hsuan Yang

Estimating 3D hand pose directly from RGB imagesis challenging but has gained steady progress recently bytraining deep models with annotated 3D poses. Howeverannotating 3D poses is difficult and as such only a few 3Dhand pose datasets are…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Liangjian Chen , Shih-Yao Lin , Yusheng Xie , Yen-Yu Lin , Xiaohui Xie

This paper addresses the problem of 3D referring expression comprehension (REC) in autonomous driving scenario, which aims to ground a natural language to the targeted region in LiDAR point clouds. Previous approaches for REC usually focus…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Wenhao Cheng , Junbo Yin , Wei Li , Ruigang Yang , Jianbing Shen

Temporal action localization is an important task of computer vision. Though many methods have been proposed, it still remains an open question how to predict the temporal location of action segments precisely. Most state-of-the-art works…

Computer Vision and Pattern Recognition · Computer Science 2019-02-15 Ke Yang , Xiaolong Shen , Peng Qiao , Shijie Li , Dongsheng Li , Yong Dou

Temporal coherence is a valuable source of information in the context of optical flow estimation. However, finding a suitable motion model to leverage this information is a non-trivial task. In this paper we propose an unsupervised online…

Computer Vision and Pattern Recognition · Computer Science 2018-06-05 Daniel Maurer , Andrés Bruhn

Object detection and tracking in videos represent essential and computationally demanding building blocks for current and future visual perception systems. In order to reduce the efficiency gap between available methods and computational…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Issa Mouawad , Francesca Odone

3D visual grounding is the ability to localize objects in 3D scenes conditioned by utterances. Most existing methods devote the referring head to localize the referred object directly, causing failure in complex scenarios. In addition, it…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Eslam Abdelrahman , Mohamed Ayman , Mahmoud Ahmed , Habib Slim , Mohamed Elhoseiny

The current paper presents a novel recurrent neural network model, the predictive multiple spatio-temporal scales RNN (P-MSTRNN), which can generate as well as recognize dynamic visual patterns in the predictive coding framework. The model…

Computer Vision and Pattern Recognition · Computer Science 2017-03-20 Minkyu Choi , Jun Tani

In this paper, we introduce a new task: Zero-Shot 3D Reasoning Segmentation for parts searching and localization for objects, which is a new paradigm to 3D segmentation that transcends limitations for previous category-specific 3D semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Tianrun Chen , Chunan Yu , Jing Li , Jianqi Zhang , Lanyun Zhu , Deyi Ji , Yong Zhang , Ying Zang , Zejian Li , Lingyun Sun

We present Online3R, a new sequential reconstruction framework that is capable of adapting to new scenes through online learning, effectively resolving inconsistency issues. Specifically, we introduce a set of learnable lightweight visual…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Shunkai Zhou , Zike Yan , Fei Xue , Dong Wu , Yuchen Deng , Hongbin Zha