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In this paper, we consider the transformation of laser range measurements into a top-view grid map representation to approach the task of LiDAR-only semantic segmentation. Since the recent publication of the SemanticKITTI data set,…

Computer Vision and Pattern Recognition · Computer Science 2020-05-15 Frank Bieder , Sascha Wirges , Johannes Janosovits , Sven Richter , Zheyuan Wang , Christoph Stiller

Semantic segmentation of point cloud usually relies on dense annotation that is exhausting and costly, so it attracts wide attention to investigate solutions for the weakly supervised scheme with only sparse points annotated. Existing works…

Computer Vision and Pattern Recognition · Computer Science 2023-12-11 Yushuang Wu , Zizheng Yan , Shengcai Cai , Guanbin Li , Yizhou Yu , Xiaoguang Han , Shuguang Cui

Critical research about camera-and-LiDAR-based semantic object segmentation for autonomous driving significantly benefited from the recent development of deep learning. Specifically, the vision transformer is the novel ground-breaker that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Junyi Gu , Mauro Bellone , Tomáš Pivoňka , Raivo Sell

Automatic segmentation of diverse heterogeneous brain lesions using multi-modal MRI is a challenging problem in clinical neuroimaging, mainly because of the lack of generalizability and high prediction variance of pathology-specific deep…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Md. Mehedi Hassan , Shafqat Alam , Shahriar Ahmed Seam , Maruf Ahmed

Semantic segmentation is crucial for medical image analysis, enabling precise disease diagnosis and treatment planning. However, many advanced models employ complex architectures, limiting their use in resource-constrained clinical…

Image and Video Processing · Electrical Eng. & Systems 2026-01-06 Le-Anh Tran , Chung Nguyen Tran , Nhan Cach Dang , Anh Le Van Quoc , Jordi Carrabina , David Castells-Rufas , Minh Son Nguyen

Few-shot Semantic Segmentation addresses the challenge of segmenting objects in query images with only a handful of annotated examples. However, many previous state-of-the-art methods either have to discard intricate local semantic features…

Computer Vision and Pattern Recognition · Computer Science 2025-11-06 Amirreza Fateh , Mohammad Reza Mohammadi , Mohammad Reza Jahed Motlagh

We present a technique for adding global context to deep convolutional networks for semantic segmentation. The approach is simple, using the average feature for a layer to augment the features at each location. In addition, we study several…

Computer Vision and Pattern Recognition · Computer Science 2015-11-23 Wei Liu , Andrew Rabinovich , Alexander C. Berg

This paper presents a framework for semantic segmentation on sparse sequential point clouds of millimeter-wave radar. Compared with cameras and lidars, millimeter-wave radars have the advantage of not revealing privacy, having a strong…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Pengfei Song , Luoyu Mei , Han Cheng

To fully leverage spatial information for remote sensing image segmentation and address semantic edge ambiguities caused by grayscale variations (e.g., shadows and low-contrast regions), we propose the Frequency and Spatial Domains based…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Jiahao Fu , Yinfeng Yu , Liejun Wang

Two major challenges of 3D LiDAR Panoptic Segmentation (PS) are that point clouds of an object are surface-aggregated and thus hard to model the long-range dependency especially for large instances, and that objects are too close to…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Shuangjie Xu , Rui Wan , Maosheng Ye , Xiaoyi Zou , Tongyi Cao

The low-level details and high-level semantics are both essential to the semantic segmentation task. However, to speed up the model inference, current approaches almost always sacrifice the low-level details, which leads to a considerable…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Changqian Yu , Changxin Gao , Jingbo Wang , Gang Yu , Chunhua Shen , Nong Sang

Over the past few years, deep convolutional neural network-based methods have made great progress in semantic segmentation of street scenes. Some recent methods align feature maps to alleviate the semantic gap between them and achieve high…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Xi Weng , Yan Yan , Si Chen , Jing-Hao Xue , Hanzi Wang

Two factors have proven to be very important to the performance of semantic segmentation models: global context and multi-level semantics. However, generating features that capture both factors always leads to high computational complexity,…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Qi Song , Kangfu Mei , Rui Huang

Instance segmentation is an important task for biomedical and biological image analysis. Due to the complicated background components, the high variability of object appearances, numerous overlapping objects, and ambiguous object…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Dongnan Liu , Donghao Zhang , Yang Song , Heng Huang , Weidong Cai

The low-level spatial detail information and high-level semantic abstract information are both essential to the semantic segmentation task. The features extracted by the deep network can obtain rich semantic information, while a lot of…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 Xiaojie Fang , Xingguo Song , Xiangyin Meng , Xu Fang , Sheng Jin

State-of-the-art approaches for the semantic labeling of LiDAR point clouds heavily rely on the use of deep Convolutional Neural Networks (CNNs). However, transferring network architectures across different LiDAR sensor types represents a…

Computer Vision and Pattern Recognition · Computer Science 2019-07-05 Florian Piewak , Peter Pinggera , Marius Zöllner

Panoptic segmentation presents a new challenge in exploiting the merits of both detection and segmentation, with the aim of unifying instance segmentation and semantic segmentation in a single framework. However, an efficient solution for…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Zixiang Zhou , Yang Zhang , Hassan Foroosh

Deep learning has substantially advanced medical image segmentation, yet achieving robust generalization across diverse imaging modalities and anatomical structures remains a major challenge. A key contributor to this limitation lies in how…

Image and Video Processing · Electrical Eng. & Systems 2026-01-23 Shams Nafisa Ali , Taufiq Hasan

As camera and LiDAR sensors capture complementary information used in autonomous driving, great efforts have been made to develop semantic segmentation algorithms through multi-modality data fusion. However, fusion-based approaches require…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Xu Yan , Jiantao Gao , Chaoda Zheng , Chao Zheng , Ruimao Zhang , Shenghui Cui , Zhen Li

In this paper, we introduce SalsaNext for the uncertainty-aware semantic segmentation of a full 3D LiDAR point cloud in real-time. SalsaNext is the next version of SalsaNet [1] which has an encoder-decoder architecture where the encoder…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Tiago Cortinhal , George Tzelepis , Eren Erdal Aksoy