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Image classification is often prone to labelling uncertainty. To generate suitable training data, images are labelled according to evaluations of human experts. This can result in ambiguities, which will affect subsequent models. In this…

Applications · Statistics 2024-07-24 Katharina Hechinger , Xiao Xiang Zhu , Göran Kauermann

In the past few years, we have seen great progress in perception algorithms, particular through the use of deep learning. However, most existing approaches focus on a few categories of interest, which represent only a small fraction of the…

Computer Vision and Pattern Recognition · Computer Science 2019-10-25 Kelvin Wong , Shenlong Wang , Mengye Ren , Ming Liang , Raquel Urtasun

Real-time occlusion handling is a major problem in outdoor mixed reality system because it requires great computational cost mainly due to the complexity of the scene. Using only segmentation, it is difficult to accurately render a virtual…

Computer Vision and Pattern Recognition · Computer Science 2017-08-01 Menandro Roxas , Tomoki Hori , Taiki Fukiage , Yasuhide Okamoto , Takeshi Oishi

In this paper, we consider the problem of crowd counting in images. Given an image of a crowded scene, our goal is to estimate the density map of this image, where each pixel value in the density map corresponds to the crowd density at the…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Mohammad Asiful Hossain , Mehrdad Hosseinzadeh , Omit Chanda , Yang Wang

We propose a novel crowd counting approach that leverages abundantly available unlabeled crowd imagery in a learning-to-rank framework. To induce a ranking of cropped images , we use the observation that any sub-image of a crowded scene…

Computer Vision and Pattern Recognition · Computer Science 2018-03-09 Xialei Liu , Joost van de Weijer , Andrew D. Bagdanov

Transparent objects such as windows and bottles made by glass widely exist in the real world. Segmenting transparent objects is challenging because these objects have diverse appearance inherited from the image background, making them had…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Enze Xie , Wenjia Wang , Wenhai Wang , Mingyu Ding , Chunhua Shen , Ping Luo

Humans possess an intricate and powerful visual system in order to perceive and understand the environing world. Human perception can effortlessly detect and correctly group features in visual data and can even interpret random-dot videos…

Computer Vision and Pattern Recognition · Computer Science 2020-01-30 Thomas Dagès , Michael Lindenbaum , Alfred M. Bruckstein

Crowd counting is a critical task in computer vision, with several important applications. However, existing counting methods rely on labor-intensive density map annotations, necessitating the manual localization of each individual…

Computer Vision and Pattern Recognition · Computer Science 2023-10-13 Adriano D'Alessandro , Ali Mahdavi-Amiri , Ghassan Hamarneh

Semantic segmentation in adverse weather scenarios is a critical task for autonomous driving systems. While foundation models have shown promise, the need for specialized adaptors becomes evident for handling more challenging scenarios. We…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Sanket Kalwar , Mihir Ungarala , Shruti Jain , Aaron Monis , Krishna Reddy Konda , Sourav Garg , K Madhava Krishna

Visual segmentation is a key perceptual function that partitions visual space and allows for detection, recognition and discrimination of objects in complex environments. The processes underlying human segmentation of natural images are…

Computer Vision and Pattern Recognition · Computer Science 2019-05-03 Jonathan Vacher , Pascal Mamassian , Ruben Coen-Cagli

For the semantic segmentation of images, state-of-the-art deep neural networks (DNNs) achieve high segmentation accuracy if that task is restricted to a closed set of classes. However, as of now DNNs have limited ability to operate in an…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Svenja Uhlemeyer , Matthias Rottmann , Hanno Gottschalk

In a given scene, humans can often easily predict a set of immediate future events that might happen. However, generalized pixel-level anticipation in computer vision systems is difficult because machine learning struggles with the…

Computer Vision and Pattern Recognition · Computer Science 2016-06-28 Jacob Walker , Carl Doersch , Abhinav Gupta , Martial Hebert

One major technique debt in video object segmentation is to label the object masks for training instances. As a result, we propose to prepare inexpensive, yet high quality pseudo ground truth corrected with motion cue for video object…

Computer Vision and Pattern Recognition · Computer Science 2018-12-14 Ye Wang , Jongmoo Choi , Yueru Chen , Qin Huang , Siyang Li , Ming-Sui Lee , C. -C. Jay Kuo

We present a multimodal camera relocalization framework that captures ambiguities and uncertainties with continuous mixture models defined on the manifold of camera poses. In highly ambiguous environments, which can easily arise due to…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Mai Bui , Tolga Birdal , Haowen Deng , Shadi Albarqouni , Leonidas Guibas , Slobodan Ilic , Nassir Navab

In this paper we provide an extensive evaluation of fixation prediction and salient object segmentation algorithms as well as statistics of major datasets. Our analysis identifies serious design flaws of existing salient object benchmarks,…

Computer Vision and Pattern Recognition · Computer Science 2014-06-13 Yin Li , Xiaodi Hou , Christof Koch , James M. Rehg , Alan L. Yuille

Crowd counting has achieved significant progress by training regressors to predict instance positions. In heavily crowded scenarios, however, regressors are challenged by uncontrollable annotation variance, which causes density map bias and…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Mingyue Guo , Li Yuan , Zhaoyi Yan , Binghui Chen , Yaowei Wang , Qixiang Ye

While supervised object detection methods achieve impressive accuracy, they generalize poorly to images whose appearance significantly differs from the data they have been trained on. To address this in scenarios where annotating data is…

Computer Vision and Pattern Recognition · Computer Science 2019-07-19 Isinsu Katircioglu , Helge Rhodin , Victor Constantin , Jörg Spörri , Mathieu Salzmann , Pascal Fua

Understanding the spatial relations between objects in images is a surprisingly challenging task. A chair may be "behind" a person even if it appears to the left of the person in the image (depending on which way the person is facing). Two…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Kaiyu Yang , Olga Russakovsky , Jia Deng

Camouflaged objects attempt to conceal their texture into the background and discriminating them from the background is hard even for human beings. The main objective of this paper is to explore the camouflaged object segmentation problem,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-21 Trung-Nghia Le , Tam V. Nguyen , Zhongliang Nie , Minh-Triet Tran , Akihiro Sugimoto

We present a method for joint alignment of sparse in-the-wild image collections of an object category. Most prior works assume either ground-truth keypoint annotations or a large dataset of images of a single object category. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Kamal Gupta , Varun Jampani , Carlos Esteves , Abhinav Shrivastava , Ameesh Makadia , Noah Snavely , Abhishek Kar