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In this paper we present a novel method for learning hierarchical representations of Markov decision processes. Our method works by partitioning the state space into subsets, and defines subtasks for performing transitions between the…

Machine Learning · Computer Science 2021-12-21 Lorenzo Steccanella , Simone Totaro , Anders Jonsson

A novel representation of images for image retrieval is introduced in this paper, by using a new type of feature with remarkable discriminative power. Despite the multi-scale nature of objects, most existing models perform feature…

Computer Vision and Pattern Recognition · Computer Science 2014-06-06 Shasha Bu , Yu-Jin Zhang

Global context information is vital in visual understanding problems, especially in pixel-level semantic segmentation. The mainstream methods adopt the self-attention mechanism to model global context information. However, pixels belonging…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Yanwen Chong , Congchong Nie , Yulong Tao , Xiaoshu Chen , Shaoming Pan

A comprehensive and explicit understanding of surgical scenes plays a vital role in developing context-aware computer-assisted systems in the operating theatre. However, few works provide systematical analysis to enable hierarchical…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Luoying Hao , Yan Hu , Yang Yue , Li Wu , Huazhu Fu , Jinming Duan , Jiang Liu

Camera-based 3D Semantic Occupancy Prediction (SOP) is crucial for understanding complex 3D scenes from limited 2D image observations. Existing SOP methods typically aggregate contextual features to assist the occupancy representation…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Bohan Li , Jiajun Deng , Yasheng Sun , Xiaofeng Wang , Xin Jin , Wenjun Zeng

Visual interactivity understanding within visual scenes presents a significant challenge in computer vision. Existing methods focus on complex interactivities while leveraging a simple relationship model. These methods, however, struggle…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Trong-Thuan Nguyen , Pha Nguyen , Khoa Luu

Object parsing -- the task of decomposing an object into its semantic parts -- has traditionally been formulated as a category-level segmentation problem. Consequently, when there are multiple objects in an image, current methods cannot…

Computer Vision and Pattern Recognition · Computer Science 2017-09-13 Qizhu Li , Anurag Arnab , Philip H. S. Torr

Panoramic image enables deeper understanding and more holistic perception of $360^\circ$ surrounding environment, which can naturally encode enriched scene context information compared to standard perspective image. Previous work has made…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Yuan Dong , Chuan Fang , Liefeng Bo , Zilong Dong , Ping Tan

Multimodal referring segmentation aims to segment target objects in visual scenes, such as images, videos, and 3D scenes, based on referring expressions in text or audio format. This task plays a crucial role in practical applications…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Henghui Ding , Song Tang , Shuting He , Chang Liu , Zuxuan Wu , Yu-Gang Jiang

To fully understand the 3D context of a single image, a visual system must be able to segment both the visible and occluded regions of objects, while discerning their occlusion order. Ideally, the system should be able to handle any object…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 Jiayang Ao , Qiuhong Ke , Krista A. Ehinger

To endow machines with the ability to perceive the real-world in a three dimensional representation as we do as humans is a fundamental and long-standing topic in Artificial Intelligence. Given different types of visual inputs such as…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Bo Yang

This paper defines the basis of a new hierarchical framework for segmentation algorithms based on energy minimization schemes. This new framework is based on two formal tools. First, a combinatorial pyramid encode efficiently a hierarchy of…

Computer Vision and Pattern Recognition · Computer Science 2009-06-16 Martin Braure De Calignon , Luc Brun , Jacques-Olivier Lachaud

Humans recognize the visual world at multiple levels: we effortlessly categorize scenes and detect objects inside, while also identifying the textures and surfaces of the objects along with their different compositional parts. In this…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Tete Xiao , Yingcheng Liu , Bolei Zhou , Yuning Jiang , Jian Sun

Semantic segmentation in cataract surgery has a wide range of applications contributing to surgical outcome enhancement and clinical risk reduction. However, the varying issues in segmenting the different relevant structures in these…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Negin Ghamsarian , Mario Taschwer , Raphael Sznitman , Klaus Schoeffmann

This paper addresses a fundamental problem of scene understanding: How to parse the scene image into a structured configuration (i.e., a semantic object hierarchy with object interaction relations) that finely accords with human perception.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-01 Liang Lin , Guangrun Wang , Rui Zhang , Ruimao Zhang , Xiaodan Liang , Wangmeng Zuo

Modern approaches have proved the huge potential of addressing semantic segmentation as a mask classification task which is widely used in instance-level segmentation. This paradigm trains models by assigning part of object queries to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Zhaochong An , Guolei Sun , Zongwei Wu , Hao Tang , Luc Van Gool

Large vision and language models learned directly through image-text associations often lack detailed visual substantiation, whereas image segmentation tasks are treated separately from recognition, supervisedly learned without…

Computer Vision and Pattern Recognition · Computer Science 2024-05-06 Tsung-Wei Ke , Sangwoo Mo , Stella X. Yu

Information from an image occurs over multiple and distinct spatial scales. Image pyramid multiresolution representations are a useful data structure for image analysis and manipulation over a spectrum of spatial scales. This paper employs…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Steve T. M. Ataky , Diego Saqui , Jonathan de Matos , Alceu S. Britto , Alessandro L. Koerich

This paper explores novel approaches for improving the spatial codification for the pooling of local descriptors to solve the semantic segmentation problem. We propose to partition the image into three regions for each object to be…

Computer Vision and Pattern Recognition · Computer Science 2016-11-15 Carles Ventura , Xavier Giró-i-Nieto , Verónica Vilaplana , Kevin McGuinness , Ferran Marqués , Noel E. O'Connor

We propose Perceptual Taxonomy, a structured process of scene understanding that first recognizes objects and their spatial configurations, then infers task-relevant properties such as material, affordance, function, and physical attributes…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Jonathan Lee , Xingrui Wang , Jiawei Peng , Luoxin Ye , Zehan Zheng , Tiezheng Zhang , Tao Wang , Wufei Ma , Siyi Chen , Yu-Cheng Chou , Prakhar Kaushik , Alan Yuille