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Object categories inherently form a hierarchy with different levels of concept abstraction, especially for fine-grained categories. For example, birds (Aves) can be categorized according to a four-level hierarchy of order, family, genus,…

Computer Vision and Pattern Recognition · Computer Science 2018-08-15 Tianshui Chen , Wenxi Wu , Yuefang Gao , Le Dong , Xiaonan Luo , Liang Lin

Fine-grained image classification, the task of distinguishing between visually similar subcategories within a broader category (e.g., bird species, car models, flower types), is a challenging computer vision problem. Traditional approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Dmitry Demidov , Zaigham Zaheer , Omkar Thawakar , Salman Khan , Fahad Shahbaz Khan

Large-scale fine-grained image retrieval has two main problems. First, low dimensional feature embedding can fasten the retrieval process but bring accuracy reduce due to overlooking the feature of significant attention regions of images in…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Qi Zhao , Xu Wang , Shuchang Lyu , Binghao Liu , Yifan Yang

Advancements in artificial intelligence (AI) have greatly benefited plant phenotyping and predictive modeling. However, unrealized opportunities exist in leveraging AI advancements in model parameter optimization for parameter fitting in…

Computational Engineering, Finance, and Science · Computer Science 2025-01-28 Tong Lei , Kyle T. Rizzo , Brian N. Bailey

In the field of Image-Text Retrieval (ITR), recent advancements have leveraged large-scale Vision-Language Pretraining (VLP) for Fine-Grained (FG) instance-level retrieval, achieving high accuracy at the cost of increased computational…

Information Retrieval · Computer Science 2026-01-19 Mikel Williams-Lekuona , Georgina Cosma

Processing of medical images such as MRI or CT presents unique challenges compared to RGB images typically used in computer vision. These include a lack of labels for large datasets, high computational costs, and metadata to describe the…

Image and Video Processing · Electrical Eng. & Systems 2021-08-06 Fernando Pérez-García , Rachel Sparks , Sébastien Ourselin

Robust detection of AI-generated images in the wild remains challenging due to the rapid evolution of generative models and varied real-world distortions. We argue that relying on a single training regime, resolution, or backbone is…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Fei Wu , Dagong Lu , Mufeng Yao , Xinlei Xu , Fengjun Guo

Modern imaging instruments can produce terabytes to petabytes of data for a single experiment. The biggest barrier to processing big image datasets has been computational, where image analysis algorithms often lack the efficiency needed to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Nicholas Schaub , Andriy Kharchenko , Hamdah Abbasi , Sameeul Samee , Hythem Sidky , Nathan Hotaling

Background and Objective: Deep learning enables tremendous progress in medical image analysis. One driving force of this progress are open-source frameworks like TensorFlow and PyTorch. However, these frameworks rarely address issues…

Image and Video Processing · Electrical Eng. & Systems 2021-04-29 Alain Jungo , Olivier Scheidegger , Mauricio Reyes , Fabian Balsiger

Human-Object Interaction (HOI), as an important problem in computer vision, requires locating the human-object pair and identifying the interactive relationships between them. The HOI instance has a greater span in spatial, scale, and task…

Computer Vision and Pattern Recognition · Computer Science 2023-01-11 Shuailei Ma , Yuefeng Wang , Shanze Wang , Ying Wei

Image harmonization aims to generate a more realistic appearance of foreground and background for a composite image. Existing methods perform the same harmonization process for the whole foreground. However, the implanted foreground always…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Jinlong Peng , Zekun Luo , Liang Liu , Boshen Zhang , Tao Wang , Yabiao Wang , Ying Tai , Chengjie Wang , Weiyao Lin

In example-based super-resolution, the function relating low-resolution images to their high-resolution counterparts is learned from a given dataset. This data-driven approach to solving the inverse problem of increasing image resolution…

Image and Video Processing · Electrical Eng. & Systems 2018-12-05 Alexander Robey , Vidya Ganapati

We present Kaolin, a PyTorch library aiming to accelerate 3D deep learning research. Kaolin provides efficient implementations of differentiable 3D modules for use in deep learning systems. With functionality to load and preprocess several…

Ptychography has become an indispensable tool for high-resolution, non-destructive imaging using coherent light sources. The processing of ptychographic data critically depends on robust, efficient, and flexible computational reconstruction…

Most recent extreme rescaling methods struggle to preserve semantically consistent structures and produce realistic details, due to the severely ill-posed nature of low- to high-resolution mapping under scaling factors of $16\times$ or…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Hao Wei , Yanhui Zhou , Chenyang Ge , Saeed Anwar , Ajmal Mian

The application of deep learning techniques has greatly enhanced holographic imaging capabilities, leading to improved phase recovery and image reconstruction. Here, we introduce a deep neural network termed enhanced Fourier Imager Network…

Optics · Physics 2023-02-28 Hanlong Chen , Luzhe Huang , Tairan Liu , Aydogan Ozcan

Existing fine-grained hashing methods typically lack code interpretability as they compute hash code bits holistically using both global and local features. To address this limitation, we propose ConceptHash, a novel method that achieves…

Computer Vision and Pattern Recognition · Computer Science 2024-06-13 Kam Woh Ng , Xiatian Zhu , Yi-Zhe Song , Tao Xiang

Fine-grained image search is still a challenging problem due to the difficulty in capturing subtle differences regardless of pose variations of objects from fine-grained categories. In practice, a dynamic inventory with new fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 Kevin Lin , Fan Yang , Qiaosong Wang , Robinson Piramuthu

Composed Image Retrieval (CIR) allows users to search target images with a multimodal query, comprising a reference image and a modification text that describes the user's modification demand over the reference image. Nevertheless, due to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Haoqiang Lin , Haokun Wen , Xuemeng Song , Meng Liu , Yupeng Hu , Liqiang Nie

Prior work on fine-grained image recognition (FGIR) has established the importance of the backbone selection, but has neglected the accuracy-vs-cost trade-offs under different training and evaluation settings. In this work we conduct a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Edwin Arkel Rios , Augusto Christian Surya , Oswin Gosal , Fernando Mikael , Mary Madeline Nicole , Kisoon Jang , Bo-Cheng Lai , Min-Chun Hu