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This study attempts to provide explanations, descriptions and evaluations of some most popular and current combinations of description and descriptor frameworks, namely SIFT, SURF, MSER, and BRISK for keypoint extractors and SIFT, SURF,…

Computer Vision and Pattern Recognition · Computer Science 2018-05-03 Novanto Yudistira , Achmad Ridok , Ali Fauzi

We address the problem of visual place recognition with perceptual changes. The fundamental problem of visual place recognition is generating robust image representations which are not only insensitive to environmental changes but also…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 Zhe Xin , Yinghao Cai , Tao Lu , Xiaoxia Xing , Shaojun Cai , Jixiang Zhang , Yiping Yang , Yanqing Wang

The use of high-dimensional features has become a normal practice in many computer vision applications. The large dimension of these features is a limiting factor upon the number of data points which may be effectively stored and processed,…

Computer Vision and Pattern Recognition · Computer Science 2015-06-18 Sakrapee Paisitkriangkrai , Chunhua Shen , Anton van den Hengel

Handling various objects with different colors is a significant challenge for image colorization techniques. Thus, for complex real-world scenes, the existing image colorization algorithms often fail to maintain color consistency. In this…

Computer Vision and Pattern Recognition · Computer Science 2023-04-26 Subhankar Ghosh , Saumik Bhattacharya , Prasun Roy , Umapada Pal , Michael Blumenstein

Computational color constancy refers to the problem of computing the illuminant color so that the images of a scene under varying illumination can be normalized to an image under the canonical illumination. In this paper, we adopt a deep…

Computer Vision and Pattern Recognition · Computer Science 2016-08-30 Seoung Wug Oh , Seon Joo Kim

Local feature matching enjoys wide-ranging applications in the realm of computer vision, encompassing domains such as image retrieval, 3D reconstruction, and object recognition. However, challenges persist in improving the accuracy and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Shibiao Xu , Shunpeng Chen , Rongtao Xu , Changwei Wang , Peng Lu , Li Guo

Learned image compression (LIC) is currently the cutting-edge method. However, the inherent difference between testing and training images of LIC results in performance degradation to some extent. Especially for out-of-sample,…

Image and Video Processing · Electrical Eng. & Systems 2026-01-05 Honggui Li , Sinan Chen , Dingtai Li , Zhengyang Zhang , Nahid Md Lokman Hossain , Xinfeng Xu , Yinlu Qin , Ruobing Wang , Maria Trocan , Dimitri Galayko , Amara Amara , Mohamad Sawan

Recent imaging technologies are rapidly evolving for sampling richer and more immersive representations of the 3D world. And one of the emerging technologies are light field (LF) cameras based on micro-lens arrays. To record the directional…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Jie Chen , Junhui Hou , Lap-Pui Chau

In digital imaging, enhancing visual content in poorly lit environments is a significant challenge, as images often suffer from inadequate brightness, hidden details, and an overall reduction in quality. This issue is especially critical in…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Farzaneh Koohestani , Nader Karimi , Shadrokh Samavi

Occlusion in face recognition is a common yet challenging problem. While sparse representation based classification (SRC) has been shown promising performance in laboratory conditions (i.e. noiseless or random pixel corrupted), it performs…

Computer Vision and Pattern Recognition · Computer Science 2015-07-28 Yandong Wen , Weiyang Liu , Meng Yang , Yuli Fu , Youjun Xiang , Rui Hu

Deployment of machine learning algorithms into real-world practice is still a difficult task. One of the challenges lies in the unpredictable variability of input data, which may differ significantly among individual users, institutions,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Roman Stoklasa

Fine-grained image recognition is very challenging due to the difficulty of capturing both semantic global features and discriminative local features. Meanwhile, these two features are not easy to be integrated, which are even conflicting…

Computer Vision and Pattern Recognition · Computer Science 2021-02-22 Shaokang Yang , Shuai Liu , Cheng Yang , Changhu Wang

Processing histopathological Whole Slide Images (WSI) leads to massive storage requirements for clinics worldwide. Even after lossy image compression during image acquisition, additional lossy compression is frequently possible without…

Few-shot image classification is a challenging task in the field of machine learning, involving the identification of new categories using a limited number of labeled samples. In recent years, methods based on local descriptors have made…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Bingchen Yan

Large language models (LLMs) primarily rely on supervised fine-tuning (SFT) as a key method to adapt pre-trained models to domain-specific tasks such as mathematical reasoning. However, standard SFT uniformly penalizes all tokens,…

Computation and Language · Computer Science 2025-10-14 Zhiwen Ruan , Yixia Li , He Zhu , Yun Chen , Peng Li , Yang Liu , Guanhua Chen

Robust and accurate visual tracking is one of the most challenging computer vision problems. Due to the inherent lack of training data, a robust approach for constructing a target appearance model is crucial. Recently, discriminatively…

Computer Vision and Pattern Recognition · Computer Science 2016-09-21 Martin Danelljan , Gustav Häger , Fahad Shahbaz Khan , Michael Felsberg

The similarity among samples and the discrepancy between clusters are two crucial aspects of image clustering. However, current deep clustering methods suffer from the inaccurate estimation of either feature similarity or semantic…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Chuang Niu , Hongming Shan , Ge Wang

Land Cover (LC) image classification has become increasingly significant in understanding environmental changes, urban planning, and disaster management. However, traditional LC methods are often labor-intensive and prone to human error.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Antonio Rangel , Juan Terven , Diana M. Cordova-Esparza , E. A. Chavez-Urbiola

Subspace learning (SL) plays an important role in hyperspectral image (HSI) classification, since it can provide an effective solution to reduce the redundant information in the image pixels of HSIs. Previous works about SL aim to improve…

Computer Vision and Pattern Recognition · Computer Science 2021-05-05 Yun Cao , Jie Mei , Yuebin Wang , Liqiang Zhang , Junhuan Peng , Bing Zhang , Lihua Li , Yibo Zheng

Low resolution image enhancement is a classical computer vision problem. Selecting the best method to reconstruct an image to a higher resolution with the limited data available in the low-resolution image is quite a challenge. A major…

Computer Vision and Pattern Recognition · Computer Science 2018-10-08 M. Z. F. Amara , R. Bandara , Thushari Silva