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We introduce an unsupervised multi-task model to jointly learn point and shape features on point clouds. We define three unsupervised tasks including clustering, reconstruction, and self-supervised classification to train a multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Kaveh Hassani , Mike Haley

It is challenging for weakly supervised object detection network to precisely predict the positions of the objects, since there are no instance-level category annotations. Most existing methods tend to solve this problem by using a…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Ke Yang , Dongsheng Li , Yong Dou

The unsupervised segmentation is an increasingly popular topic in biomedical image analysis. The basic idea is to approach the supervised segmentation task as an unsupervised synthesis problem, where the intensity images can be transferred…

Computer Vision and Pattern Recognition · Computer Science 2020-10-23 Quan Liu , Isabella M. Gaeta , Bryan A. Millis , Matthew J. Tyska , Yuankai Huo

Patch-level image representation is very important for object classification and detection, since it is robust to spatial transformation, scale variation, and cluttered background. Many existing methods usually require fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Peng Tang , Xinggang Wang , Zilong Huang , Xiang Bai , Wenyu Liu

Equivariance to random image transformations is an effective method to learn landmarks of object categories, such as the eyes and the nose in faces, without manual supervision. However, this method does not explicitly guarantee that the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 James Thewlis , Samuel Albanie , Hakan Bilen , Andrea Vedaldi

In this paper, we propose a self-supervised learningmethod for multi-object pose estimation. 3D object under-standing from 2D image is a challenging task that infers ad-ditional dimension from reduced-dimensional information.In particular,…

Computer Vision and Pattern Recognition · Computer Science 2021-04-16 Hyeonwoo Yu , Jean Oh

We tackle the problem of object-centric learning on point clouds, which is crucial for high-level relational reasoning and scalable machine intelligence. In particular, we introduce a framework, SPAIR3D, to factorize a 3D point cloud into a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Tianyu Wang , Miaomiao Liu , Kee Siong Ng

Recent work in unsupervised multi-object segmentation shows impressive results by predicting motion from a single image despite the inherent ambiguity in predicting motion without the next image. On the other hand, the set of possible…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Sadra Safadoust , Fatma Güney

We introduce a Multi-modal Neural Machine Translation model in which a doubly-attentive decoder naturally incorporates spatial visual features obtained using pre-trained convolutional neural networks, bridging the gap between image…

Computation and Language · Computer Science 2017-02-07 Iacer Calixto , Qun Liu , Nick Campbell

This paper proposes a new transformer-based framework to learn class-specific object localization maps as pseudo labels for weakly supervised semantic segmentation (WSSS). Inspired by the fact that the attended regions of the one-class…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Lian Xu , Wanli Ouyang , Mohammed Bennamoun , Farid Boussaid , Dan Xu

Transformer-based methods have demonstrated superior performance for monocular 3D object detection recently, which aims at predicting 3D attributes from a single 2D image. Most existing transformer-based methods leverage both visual and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Xuan He , Fan Yang , Kailun Yang , Jiacheng Lin , Haolong Fu , Meng Wang , Jin Yuan , Zhiyong Li

Multi-task learning has proven to be effective in improving the performance of correlated tasks. Most of the existing methods use a backbone to extract initial features with independent branches for each task, and the exchange of…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Diogo Nunes Goncalves , Jose Marcato Junior , Pedro Zamboni , Hemerson Pistori , Jonathan Li , Keiller Nogueira , Wesley Nunes Goncalves

Self-supervised detection and segmentation of foreground objects aims for accuracy without annotated training data. However, existing approaches predominantly rely on restrictive assumptions on appearance and motion. For scenes with dynamic…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Isinsu Katircioglu , Helge Rhodin , Jörg Spörri , Mathieu Salzmann , Pascal Fua

To be effective in unstructured and changing environments, robots must learn to recognize new objects. Deep learning has enabled rapid progress for object detection and segmentation in computer vision; however, this progress comes at the…

Robotics · Computer Science 2020-03-05 Victoria Florence , Jason J. Corso , Brent Griffin

In order to learn object segmentation models in videos, conventional methods require a large amount of pixel-wise ground truth annotations. However, collecting such supervised data is time-consuming and labor-intensive. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2019-01-09 Yi-Wen Chen , Yi-Hsuan Tsai , Chu-Ya Yang , Yen-Yu Lin , Ming-Hsuan Yang

Unsupervised semantic segmentation aims to obtain high-level semantic representation on low-level visual features without manual annotations. Most existing methods are bottom-up approaches that try to group pixels into regions based on…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Zhaoyuan Yin , Pichao Wang , Fan Wang , Xianzhe Xu , Hanling Zhang , Hao Li , Rong Jin

Transformers are increasingly dominating multi-modal reasoning tasks, such as visual question answering, achieving state-of-the-art results thanks to their ability to contextualize information using the self-attention and co-attention…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Hila Chefer , Shir Gur , Lior Wolf

In medical image segmentation, specialized computer vision techniques, notably transformers grounded in attention mechanisms and residual networks employing skip connections, have been instrumental in advancing performance. Nonetheless,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Fuchen Zheng , Xuhang Chen , Weihuang Liu , Haolun Li , Yingtie Lei , Jiahui He , Chi-Man Pun , Shounjun Zhou

Unsupervised learning poses one of the most difficult challenges in computer vision today. The task has an immense practical value with many applications in artificial intelligence and emerging technologies, as large quantities of unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Ioana Croitoru , Simion-Vlad Bogolin , Marius Leordeanu

Deep learning architectures are an extremely powerful tool for recognizing and classifying images. However, they require supervised learning and normally work on vectors the size of image pixels and produce the best results when trained on…

Machine Learning · Computer Science 2020-10-20 Ryan Burt , Nina N. Thigpen , Andreas Keil , Jose C. Principe
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