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Many existing approaches for 3D point cloud semantic segmentation are fully supervised. These fully supervised approaches heavily rely on large amounts of labeled training data that are difficult to obtain and cannot segment new classes…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Na Zhao , Tat-Seng Chua , Gim Hee Lee

Knowledge present in a domain is well expressed as relationships between corresponding concepts. For example, in zoology, animal species form complex hierarchies; in genomics, the different (parts of) molecules are organized in groups and…

Machine Learning · Computer Science 2021-07-08 Lu Yin , Vlado Menkovski , Mykola Pechenizkiy

Models based on deep convolutional neural networks (CNN) have significantly improved the performance of semantic segmentation. However, learning these models requires a large amount of training images with pixel-level labels, which are very…

Computer Vision and Pattern Recognition · Computer Science 2018-02-05 Linwei Ye , Zhi Liu , Yang Wang

Existing state-of-the-art 3D point cloud understanding methods merely perform well in a fully supervised manner. To the best of our knowledge, there exists no unified framework that simultaneously solves the downstream high-level…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Kangcheng Liu

The ability to generate novel, diverse, and realistic 3D shapes along with associated part semantics and structure is central to many applications requiring high-quality 3D assets or large volumes of realistic training data. A key challenge…

Graphics · Computer Science 2019-08-05 Kaichun Mo , Paul Guerrero , Li Yi , Hao Su , Peter Wonka , Niloy Mitra , Leonidas J. Guibas

When approaching the semantic segmentation of overhead imagery in the decimeter spatial resolution range, successful strategies usually combine powerful methods to learn the visual appearance of the semantic classes (e.g. convolutional…

Computer Vision and Pattern Recognition · Computer Science 2018-08-24 Michele Volpi , Devis Tuia

Graph-based semi-supervised learning has been shown to be one of the most effective approaches for classification tasks from a wide range of domains, such as image classification and text classification, as they can exploit the connectivity…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Wanyu Lin , Zhaolin Gao , Baochun Li

A major obstacle in instance segmentation is that existing methods often need many per-pixel labels in order to be effective. These labels require large human effort and for certain applications, such labels are not readily available. To…

Computer Vision and Pattern Recognition · Computer Science 2019-07-03 Issam H. Laradji , David Vazquez , Mark Schmidt

Semantic segmentation models only perform well on the domain they are trained on and datasets for training are scarce and often have a small label-spaces, because the pixel level annotations required are expensive to make. Thus training…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Floris Naber

Hierarchical neural architectures are often used to capture long-distance dependencies and have been applied to many document-level tasks such as summarization, document segmentation, and sentiment analysis. However, effective usage of such…

Computation and Language · Computer Science 2019-01-29 Ming-Wei Chang , Kristina Toutanova , Kenton Lee , Jacob Devlin

We propose a novel method for semantic segmentation, the task of labeling each pixel in an image with a semantic class. Our method combines the advantages of the two main competing paradigms. Methods based on region classification offer…

Computer Vision and Pattern Recognition · Computer Science 2016-07-27 Holger Caesar , Jasper Uijlings , Vittorio Ferrari

Weakly supervised segmentation is an important problem in medical image analysis due to the high cost of pixelwise annotation. Prior methods, while often focusing on weak labels of 2D images, exploit few structural cues of volumetric…

Computer Vision and Pattern Recognition · Computer Science 2021-05-07 Qian He , Shuailin Li , Xuming He

Semantic segmentation is a key computer vision task that has been actively researched for decades. In recent years, supervised methods have reached unprecedented accuracy, however they require many pixel-level annotations for every new…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Nir Zabari , Yedid Hoshen

Label hierarchies are often available apriori as part of biological taxonomy or language datasets WordNet. Several works exploit these to learn hierarchy aware features in order to improve the classifier to make semantically meaningful…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Ashima Garg , Depanshu Sani , Saket Anand

Label-efficient segmentation aims to perform effective segmentation on input data using only sparse and limited ground-truth labels for training. This topic is widely studied in 3D point cloud segmentation due to the difficulty of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Liyao Tang , Zhe Chen , Shanshan Zhao , Chaoyue Wang , Dacheng Tao

In this work, we tackle the challenging problem of category-level object pose and size estimation from a single depth image. Although previous fully-supervised works have demonstrated promising performance, collecting ground-truth pose…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Yisheng He , Haoqiang Fan , Haibin Huang , Qifeng Chen , Jian Sun

Semantic segmentation necessitates approaches that learn high-level characteristics while dealing with enormous amounts of data. Convolutional neural networks (CNNs) can learn unique and adaptive features to achieve this aim. However, due…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Hasan AlMarzouqi , Lyes Saad Saoud

Obtaining high-resolution (HR) segmentations from coarse annotations is a pervasive challenge in computer vision. Applications include inferring pixel-level segmentations from token-level labels in vision transformers, upsampling coarse…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xiaoling Hu , Peirong Liu , Dina Zemlyanker , Jonathan Williams Ramirez , Oula Puonti , Juan Eugenio Iglesias

Most medical image lesion segmentation methods rely on hand-crafted accurate annotations of the original image for supervised learning. Recently, a series of weakly supervised or unsupervised methods have been proposed to reduce the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Jiawei Chen , Dingkang Yang , Yuxuan Lei , Lihua Zhang

Reasoning 3D shapes from 2D images is an essential yet challenging task, especially when only single-view images are at our disposal. While an object can have a complicated shape, individual parts are usually close to geometric primitives…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Chun-Han Yao , Wei-Chih Hung , Varun Jampani , Ming-Hsuan Yang
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