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We propose shifted inner-product similarity (SIPS), which is a novel yet very simple extension of the ordinary inner-product similarity (IPS) for neural-network based graph embedding (GE). In contrast to IPS, that is limited to…

Machine Learning · Statistics 2019-02-25 Akifumi Okuno , Geewook Kim , Hidetoshi Shimodaira

Image retrieval task consists of finding similar images to a query image from a set of gallery (database) images. Such systems are used in various applications e.g. person re-identification (ReID) or visual product search. Despite active…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Mikolaj Wieczorek , Barbara Rychalska , Jacek Dabrowski

Deep-learning has proved in recent years to be a powerful tool for image analysis and is now widely used to segment both 2D and 3D medical images. Deep-learning segmentation frameworks rely not only on the choice of network architecture but…

Computer Vision and Pattern Recognition · Computer Science 2017-09-19 Carole H Sudre , Wenqi Li , Tom Vercauteren , Sébastien Ourselin , M. Jorge Cardoso

Deep-learning architectures for classification problems involve the cross-entropy loss sometimes assisted with auxiliary loss functions like center loss, contrastive loss and triplet loss. These auxiliary loss functions facilitate better…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Hongjun Choi , Anirudh Som , Pavan Turaga

This article proposes a data-driven methodology to achieve a fast design support, in order to generate or develop novel designs covering multiple object categories. This methodology implements two state-of-the-art Variational Autoencoder…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Zhangsihao Yang , Haoliang Jiang , Zou Lan

Contrastive Language and Image Pairing (CLIP), a transformative method in multimedia retrieval, typically trains two neural networks concurrently to generate joint embeddings for text and image pairs. However, when applied directly, these…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Konstantin Schall , Kai Uwe Barthel , Nico Hezel , Klaus Jung

Recent advancements in deep generative models, particularly with the application of CLIP (Contrastive Language Image Pretraining) to Denoising Diffusion Probabilistic Models (DDPMs), have demonstrated remarkable effectiveness in text to…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Cristian Sbrolli , Paolo Cudrano , Matteo Matteucci

Image-based shape retrieval (IBSR) aims to retrieve 3D models from a database given a query image, hence addressing a classical task in computer vision, computer graphics, and robotics. Recent approaches typically rely on bridging the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Paul Julius Kühn , Cedric Spengler , Michael Weinmann , Arjan Kuijper , Saptarshi Neil Sinha

This paper proposes a deep representation learning using an information-theoretic loss with an aim to increase the inter-class distances as well as within-class similarity in the embedded space. Tasks such as anomaly and out-of-distribution…

Machine Learning · Computer Science 2022-02-08 Shin Ando

Multi-modal contrastive models such as CLIP achieve state-of-the-art performance in zero-shot classification by embedding input images and texts on a joint representational space. Recently, a modality gap has been reported in two-encoder…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Abrar Fahim , Alex Murphy , Alona Fyshe

RGB-Infrared person re-identification (RGB-IR Re- ID) is a cross-modality matching problem, where the modality discrepancy is a big challenge. Most existing works use Euclidean metric based constraints to resolve the discrepancy between…

Computer Vision and Pattern Recognition · Computer Science 2021-02-03 Hanrong Ye , Hong Liu , Fanyang Meng , Xia Li

The rapid growth of 3D digital content necessitates expandable recognition systems for open-world scenarios. However, existing 3D class-incremental learning methods struggle under extreme data scarcity due to geometric misalignment and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Tuo Xiang , Xuemiao Xu , Bangzhen Liu , Jinyi Li , Yong Li , Shengfeng He

We propose to synthesize feasible caging grasps for a target object through computing Caging Loops, a closed curve defined in the shape embedding space of the object. Different from the traditional methods, our approach decouples caging…

Robotics · Computer Science 2018-08-01 Jian Liu , Shiqing Xin , Zengfu Gao , Kai Xu , Changhe Tu , Baoquan Chen

Indexing is an effective way to support efficient query processing in large databases. Recently the concept of learned index, which replaces or complements traditional index structures with machine learning models, has been actively…

Databases · Computer Science 2022-08-01 Yao Tian , Tingyun Yan , Xi Zhao , Kai Huang , Xiaofang Zhou

The performance of neural networks in content-based image retrieval (CBIR) is highly influenced by the chosen loss (objective) function. The majority of objective functions for neural models can be divided into metric learning and…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Alexandru Ghita , Radu Tudor Ionescu

Deep Metric Learning (DML) learns a non-linear semantic embedding from input data that brings similar pairs together while keeping dissimilar data away from each other. To this end, many different methods are proposed in the last decade…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Davood Zabihzadeh , Zahraa Alitbi , Seyed Jalaleddin Mousavirad

We propose a novel technique for producing high-quality 3D models that match a given target object image or scan. Our method is based on retrieving an existing shape from a database of 3D models and then deforming its parts to match the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Mikaela Angelina Uy , Vladimir G. Kim , Minhyuk Sung , Noam Aigerman , Siddhartha Chaudhuri , Leonidas Guibas

Majority of the current dimensionality reduction or retrieval techniques rely on embedding the learned feature representations onto a computable metric space. Once the learned features are mapped, a distance metric aids the bridging of gaps…

Computer Vision and Pattern Recognition · Computer Science 2018-10-17 Muhammad Kamran Janjua , Shah Nawaz , Alessandro Calefati , Ignazio Gallo

With the introduction of fully convolutional neural networks, deep learning has raised the benchmark for medical image segmentation on both speed and accuracy, and different networks have been proposed for 2D and 3D segmentation with…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Ken C. L. Wong , Mehdi Moradi , Hui Tang , Tanveer Syeda-Mahmood

In image segmentation, preserving the topology of segmented structures like vessels, membranes, or roads is crucial. For instance, topological errors on road networks can significantly impact navigation. Recently proposed solutions are loss…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Benedict Schacht , Imke Greving , Simone Frintrop , Berit Zeller-Plumhoff , Christian Wilms