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Landmark/pose estimation in single monocular images have received much effort in computer vision due to its important applications. It remains a challenging task when input images severe occlusions caused by, e.g., adverse camera views.…

计算机视觉与模式识别 · 计算机科学 2019-02-26 Yu Chen , Chunhua Shen , Hao Chen , Xiu-Shen Wei , Lingqiao Liu , Jian Yang

Tomography is an imaging technique that works by reconstructing a scene from acquired data in the form of line integrals of the imaging domain. A fundamental underlying assumption in the reconstruction procedure is the precise alignment of…

数值分析 · 数学 2018-07-13 Toby Sanders

We address the problem of segmenting 3D multi-modal medical images in scenarios where very few labeled examples are available for training. Leveraging the recent success of adversarial learning for semi-supervised segmentation, we propose a…

计算机视觉与模式识别 · 计算机科学 2018-10-30 Arnab Kumar Mondal , Jose Dolz , Christian Desrosiers

This paper describes a new approach for training generative adversarial networks (GAN) to understand the detailed 3D shape of objects. While GANs have been used in this domain previously, they are notoriously hard to train, especially for…

计算机视觉与模式识别 · 计算机科学 2017-11-01 Edward Smith , David Meger

Automatic colorization of images without human intervention has been a subject of interest in the machine learning community for a brief period of time. Assigning color to an image is a highly ill-posed problem because of its innate nature…

图像与视频处理 · 电气工程与系统科学 2021-12-30 Shreyas Kalvankar , Hrushikesh Pandit , Pranav Parwate , Atharva Patil , Snehal Kamalapur

We present a new weakly supervised learning-based method for generating novel category-specific 3D shapes from unoccluded image collections. Our method is weakly supervised and only requires silhouette annotations from unoccluded,…

计算机视觉与模式识别 · 计算机科学 2019-06-11 Xiao Li , Yue Dong , Pieter Peers , Xin Tong

Many engineering problems require the prediction of realization-to-realization variability or a refined description of modeled quantities. In that case, it is necessary to sample elements from unknown high-dimensional spaces with possibly…

机器学习 · 统计学 2022-01-05 Malik Hassanaly , Andrew Glaws , Karen Stengel , Ryan N. King

Improving the aesthetic quality of images is challenging and eager for the public. To address this problem, most existing algorithms are based on supervised learning methods to learn an automatic photo enhancer for paired data, which…

计算机视觉与模式识别 · 计算机科学 2021-01-06 Zhangkai Ni , Wenhan Yang , Shiqi Wang , Lin Ma , Sam Kwong

Many imaging technologies rely on tomographic reconstruction, which requires solving a multidimensional inverse problem given a finite number of projections. Backprojection is a popular class of algorithm for tomographic reconstruction,…

图像与视频处理 · 电气工程与系统科学 2020-06-03 Xueqing Liu , Paul Sajda

Electrical tomography techniques have been widely employed for multiphase-flow monitoring owing to their non invasive nature, intrinsic safety, and low cost. Nevertheless, conventional reconstructions struggle to capture fine details, which…

图像与视频处理 · 电气工程与系统科学 2025-12-23 Wejian Yan

Reconstruction-based methods play an important role in unsupervised anomaly detection in images. Ideally, we expect a perfect reconstruction for normal samples and poor reconstruction for abnormal samples. Since the generalizability of deep…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Jinlei Hou , Yingying Zhang , Qiaoyong Zhong , Di Xie , Shiliang Pu , Hong Zhou

We propose a novel unsupervised out-of-distribution detection method for medical images based on implicit fields image representations. In our approach, an auto-decoder feed-forward neural network learns the distribution of healthy images…

图像与视频处理 · 电气工程与系统科学 2021-06-10 Sergio Naval Marimont , Giacomo Tarroni

We consider tomographic reconstruction using priors in the form of a dictionary learned from training images. The reconstruction has two stages: first we construct a tensor dictionary prior from our training data, and then we pose the…

计算机视觉与模式识别 · 计算机科学 2015-06-17 Sara Soltani , Misha E. Kilmer , Per Christian Hansen

Generative adversarial networks (GANs) are a novel approach to generative modelling, a task whose goal it is to learn a distribution of real data points. They have often proved difficult to train: GANs are unlike many techniques in machine…

机器学习 · 计算机科学 2018-07-02 Samuel A. Barnett

Reconstructing the 3D geometry of an object from an image is a major challenge in computer vision. Recently introduced differentiable renderers can be leveraged to learn the 3D geometry of objects from 2D images, but those approaches…

计算机视觉与模式识别 · 计算机科学 2021-10-22 Felix Petersen , Bastian Goldluecke , Oliver Deussen , Hilde Kuehne

The identification of lesion within medical image data is necessary for diagnosis, treatment and prognosis. Segmentation and classification approaches are mainly based on supervised learning with well-paired image-level or voxel-level…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Liyan Sun , Jiexiang Wang , Yue Huang , Xinghao Ding , Hayit Greenspan , John Paisley

We propose a federated algorithm for reconstructing images using multimodal tomographic data sourced from dispersed locations, addressing the challenges of traditional unimodal approaches that are prone to noise and reduced image quality.…

最优化与控制 · 数学 2025-01-13 Geunyeong Byeon , Minseok Ryu , Zichao Wendy Di , Kibaek Kim

The inverse mapping of GANs'(Generative Adversarial Nets) generator has a great potential value.Hence, some works have been developed to construct the inverse function of generator by directly learning or adversarial learning.While the…

机器学习 · 计算机科学 2017-09-13 Junyu Luo , Yong Xu , Chenwei Tang , Jiancheng Lv

Assume you encounter an inverse problem that shall be solved for a large number of data, but no ground-truth data is available. To emulate this encounter, in this study, we assume it is unknown how to solve the imaging problem of Computed…

Semi-supervised learning for medical image segmentation is an important area of research for alleviating the huge cost associated with the construction of reliable large-scale annotations in the medical domain. Recent semi-supervised…

计算机视觉与模式识别 · 计算机科学 2022-05-17 Chae Eun Lee , Hyelim Park , Yeong-Gil Shin , Minyoung Chung