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In Bag-of-Words (BoW) based image retrieval, the SIFT visual word has a low discriminative power, so false positive matches occur prevalently. Apart from the information loss during quantization, another cause is that the SIFT feature only…

Computer Vision and Pattern Recognition · Computer Science 2014-04-15 Liang Zheng , Shengjin Wang , Ziqiong Liu , Qi Tian

The Versatile Video Coding (VVC) standard, introduced in 2020, offers 40-50% bitrate savings for equivalent visual quality of reconstructed videos over its predecessor, High Efficiency Video Coding (HEVC), at the cost of significantly…

Image and Video Processing · Electrical Eng. & Systems 2026-05-22 M. E. A. Kherchouche , F. Galpin , T. Dumas , L. Zhang , D. Menard

In this paper, we present a conceptually simple, strong, and efficient framework for fully- and weakly-supervised panoptic segmentation, called Panoptic FCN. Our approach aims to represent and predict foreground things and background stuff…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Yanwei Li , Hengshuang Zhao , Xiaojuan Qi , Yukang Chen , Lu Qi , Liwei Wang , Zeming Li , Jian Sun , Jiaya Jia

The phase retrieval problem in the classical setting is to reconstruct real/complex functions from the magnitudes of their Fourier/frame measurements. In this paper, we consider a new phase retrieval paradigm in the…

Functional Analysis · Mathematics 2019-09-06 Yang Chen , Cheng Cheng , Qiyu Sun

Vector search plays a crucial role in many real-world applications. In addition to single-vector search, multi-vector search becomes important for multi-modal and multi-feature scenarios today. In a multi-vector database, each row is an…

Databases · Computer Science 2026-05-05 Jiongli Zhu , Yue Wang , Bailu Ding , Philip A. Bernstein , Vivek Narasayya , Surajit Chaudhuri

A primary bottleneck in modern FFT-based matched-filter searches for gravitational waves from compact binary coalescences is not raw processor throughput, but available memory bandwidth. Standard frequency-domain implementations, such as…

Instrumentation and Methods for Astrophysics · Physics 2026-04-30 Alexander H. Nitz , Keisi Kacanja , Kanchan Soni

Given an array $X$ of $N+1$ strictly ordered floating point numbers and a floating point number $z$ in the interval $[X_0,X_N)$, a common problem is to find the index $i$ of the interval $[X_{i},X_{i+1})$ containing $z$. This problem arises…

Data Structures and Algorithms · Computer Science 2017-12-01 Fabio Cannizzo

Conformal prediction aims to determine precise levels of confidence in predictions for new objects using past experience. However, the commonly used exchangeable assumptions between the training data and testing data limit its usage in…

Machine Learning · Statistics 2022-10-18 Youhui Ye , Meimei Liu , Xin Xing

Integer coefficient selection is an important decoding step in the implementation of compute-and-forward (C-F) relaying scheme. Choosing the optimal integer coefficients in C-F has been shown to be a shortest vector problem (SVP) which is…

Information Theory · Computer Science 2016-11-17 William Liu , Cong Ling

A current trend in HPC systems is the utilization of architectures with SIMD or vector extensions to exploit data parallelism. There are several ways to take advantage of such modern vector architectures, each with a different impact on the…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-11-05 Marc Blancafort , Roger Ferrer , Guillaume Houzeaux , Marta Garcia-Gasulla , Filippo Mantovani

Current state-of-the-art document retrieval solutions mainly follow an index-retrieve paradigm, where the index is hard to be directly optimized for the final retrieval target. In this paper, we aim to show that an end-to-end deep neural…

Fully convolutional networks (FCNs) have been proven very successful for semantic segmentation, but the FCN outputs are unaware of object instances. In this paper, we develop FCNs that are capable of proposing instance-level segment…

Computer Vision and Pattern Recognition · Computer Science 2016-03-30 Jifeng Dai , Kaiming He , Yi Li , Shaoqing Ren , Jian Sun

During the recent years, correlation filters have shown dominant and spectacular results for visual object tracking. The types of the features that are employed in these family of trackers significantly affect the performance of visual…

Computer Vision and Pattern Recognition · Computer Science 2018-03-13 Erhan Gundogdu , A. Aydin Alatan

Dense retrieval techniques employ pre-trained large language models to build a high-dimensional representation of queries and passages. These representations compute the relevance of a passage w.r.t. to a query using efficient similarity…

Information Retrieval · Computer Science 2024-04-04 Franco Maria Nardini , Cosimo Rulli , Rossano Venturini

In recent years, GoogleNet has garnered substantial attention as one of the base convolutional neural networks (CNNs) to extract visual features for object detection. However, it experiences challenges of contaminated deep features when…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Jaemo Sung , Eun-Sung Jung

Template matching is a fundamental problem in computer vision with applications in fields including object detection, image registration, and object tracking. Current methods rely on nearest-neighbour (NN) matching, where the query feature…

Computer Vision and Pattern Recognition · Computer Science 2023-10-18 Ankit Gupta , Ida-Maria Sintorn

Filtered ANN search is an increasingly important problem in vector retrieval, yet systems face a difficult trade-off due to the execution order: Pre-filtering (filtering first, then ANN over the passing subset) requires expensive…

Databases · Computer Science 2026-02-23 Zhuocheng Gan , Yifan Wang

Context. A novel high-performance exact pair counting toolkit called Fast Correlation Function Calculator (FCFC) is presented, which is publicly available at https://github.com/cheng-zhao/FCFC. Aims. As the rapid growth of modern…

Instrumentation and Methods for Astrophysics · Physics 2023-04-05 Cheng Zhao

Vector search, the task of finding the k-nearest neighbors of a query vector against a database of high-dimensional vectors, underpins many machine learning applications, including retrieval-augmented generation, recommendation systems, and…

In this paper, we present a conceptually simple, strong, and efficient framework for panoptic segmentation, called Panoptic FCN. Our approach aims to represent and predict foreground things and background stuff in a unified fully…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Yanwei Li , Hengshuang Zhao , Xiaojuan Qi , Liwei Wang , Zeming Li , Jian Sun , Jiaya Jia
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