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Recognizing human actions from untrimmed videos is an important task in activity understanding, and poses unique challenges in modeling long-range temporal relations. Recent works adopt a predict-and-refine strategy which converts an…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Zhichao Liu , Leshan Wang , Desen Zhou , Jian Wang , Songyang Zhang , Yang Bai , Errui Ding , Rui Fan

Semantic segmentation of point clouds, aiming to assign each point a semantic category, is critical to 3D scene understanding.Despite of significant advances in recent years, most of existing methods still suffer from either the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Chen Chen , Yisen Wang , Honghua Chen , Xuefeng Yan , Dayong Ren , Yanwen Guo , Haoran Xie , Fu Lee Wang , Mingqiang Wei

Unsupervised semantic segmentation aims to categorize each pixel in an image into a corresponding class without the use of annotated data. It is a widely researched area as obtaining labeled datasets is expensive. While previous works in…

Computer Vision and Pattern Recognition · Computer Science 2024-01-01 Yau Shing Jonathan Cheung , Xi Chen , Lihe Yang , Hengshuang Zhao

Semantic segmentation consists of predicting a semantic label for each image pixel. While existing deep learning approaches achieve high accuracy, they often overlook the ordinal relationships between classes, which can provide critical…

Computer Vision and Pattern Recognition · Computer Science 2025-02-06 Ricardo P. M. Cruz , Rafael Cristino , Jaime S. Cardoso

Open-vocabulary semantic segmentation models aim to accurately assign a semantic label to each pixel in an image from a set of arbitrary open-vocabulary texts. In order to learn such pixel-level alignment, current approaches typically rely…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Zihang Lai

Applying traditional post-hoc attribution methods to segmentation or object detection predictors offers only limited insights, as the obtained feature attribution maps at input level typically resemble the models' predicted segmentation…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Maximilian Dreyer , Reduan Achtibat , Thomas Wiegand , Wojciech Samek , Sebastian Lapuschkin

We introduce a novel framework to build a model that can learn how to segment objects from a collection of images without any human annotation. Our method builds on the observation that the location of object segments can be perturbed…

Computer Vision and Pattern Recognition · Computer Science 2019-11-05 Adam Bielski , Paolo Favaro

Learning to understand and infer object functionalities is an important step towards robust visual intelligence. Significant research efforts have recently focused on segmenting the object parts that enable specific types of human-object…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Spyridon Thermos , Petros Daras , Gerasimos Potamianos

This paper investigates one of the most fundamental computer vision problems: image segmentation. We propose a supervised hierarchical approach to object-independent image segmentation. Starting with over-segmenting superpixels, we use a…

Computer Vision and Pattern Recognition · Computer Science 2016-08-16 Ting Liu , Mojtaba Seyedhosseini , Tolga Tasdizen

Autonomous navigation in unstructured off-road environments is greatly improved by semantic scene understanding. Conventional image processing algorithms are difficult to implement and lack robustness due to a lack of structure and high…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Anthony Medellin , Anant Bhamri , Reza Langari , Swaminathan Gopalswamy

The Segment Anything Model (SAM) excels at generating precise object masks from input prompts but lacks semantic awareness, failing to associate its generated masks with specific object categories. To address this limitation, we propose…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Rohit Kundu , Sudipta Paul , Arindam Dutta , Amit K. Roy-Chowdhury

A central challenge for the task of semantic segmentation is the prohibitive cost of obtaining dense pixel-level annotations to supervise model training. In this work, we show that in order to achieve a good level of segmentation…

Computer Vision and Pattern Recognition · Computer Science 2021-04-16 Gyungin Shin , Weidi Xie , Samuel Albanie

This work investigates learning pixel-wise semantic image segmentation in urban scenes without any manual annotation, just from the raw non-curated data collected by cars which, equipped with cameras and LiDAR sensors, drive around a city.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Antonin Vobecky , David Hurych , Oriane Siméoni , Spyros Gidaris , Andrei Bursuc , Patrick Pérez , Josef Sivic

Hierarchical clustering is an effective and efficient approach widely used for classical image segmentation methods. However, many existing methods using neural networks generate segmentation masks directly from per-pixel features,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Teppei Suzuki

Semantic segmentation has innately relied on extensive pixel-level annotated data, leading to the emergence of unsupervised methodologies. Among them, leveraging self-supervised Vision Transformers for unsupervised semantic segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-04-08 Chanyoung Kim , Woojung Han , Dayun Ju , Seong Jae Hwang

We design an open-vocabulary image segmentation model to organize an image into meaningful regions indicated by arbitrary texts. Recent works (CLIP and ALIGN), despite attaining impressive open-vocabulary classification accuracy with…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Golnaz Ghiasi , Xiuye Gu , Yin Cui , Tsung-Yi Lin

Open-vocabulary semantic segmentation is a challenging task that requires segmenting novel object categories at inference time. Recent studies have explored vision-language pre-training to handle this task, but suffer from unrealistic…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Chaofan Ma , Yuhuan Yang , Chen Ju , Fei Zhang , Ya Zhang , Yanfeng Wang

Recent approaches for instance-aware semantic labeling have augmented convolutional neural networks (CNNs) with complex multi-task architectures or computationally expensive graphical models. We present a method that leverages a fully…

Computer Vision and Pattern Recognition · Computer Science 2016-07-15 Jonas Uhrig , Marius Cordts , Uwe Franke , Thomas Brox

Existing weakly-supervised semantic segmentation methods using image-level annotations typically rely on initial responses to locate object regions. However, such response maps generated by the classification network usually focus on…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Yu-Ting Chang , Qiaosong Wang , Wei-Chih Hung , Robinson Piramuthu , Yi-Hsuan Tsai , Ming-Hsuan Yang

This manuscript introduces the problem of prominent object detection and recognition inspired by the fact that human seems to priorities perception of scene elements. The problem deals with finding the most important region of interest,…

Computer Vision and Pattern Recognition · Computer Science 2017-08-07 Hamed R. Tavakoli , Jorma Laaksonen