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Image and Signal Processing Techniques and Applications, 2nd Edition

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Computer Science & Engineering".

Deadline for manuscript submissions: 15 January 2027 | Viewed by 445

Editors

School of Artificial Intelligence, University of Xidian, Xi’an 710126, China
Interests: geometric-invariant deep learning; remote sensing image analysis; affective computing
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Artificial Intelligence, Xidian University, Xi’an 710126, China
Interests: image sparse representation and compression sensing theory; image denoising and segmentation; SAR image denoising and terrain classification; SAR target detection and recogn
Special Issues, Collections and Topics in MDPI journals
Department of Artificial Intelligence, Xidian University, Xi’an 710071, China
Interests: image registration; domain adaptation; multimodal learning; and intelligent signal processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Image and signal processing techniques have made remarkable progress over the past two decades and have been applied in various scenarios. The core step in image and signal analysis is feature extraction, which can be categorized into two primary approaches: knowledge-driven handcrafted features and data-driven deep learning methods. The former excels in feature interpretability, computational efficiency, and performance predictability, while the latter demonstrates significant advantages in feature generalization, high-level semantic representation, and multi-modal/heterogeneous data modeling and has achieved remarkable results in large-scale datasets, supporting various image and signal analysis tasks. Recently, researchers have begun to explore knowledge–data collaborative approaches for feature extraction in image and signal processing, focusing on algorithm reliability, feature interpretability, and model parameter lightweighting. Moreover, the emergence of large language models and vision–language models has further advanced research in multi-modal heterogeneous data feature alignment and fusion for image and signal processing. This Special Issue invites authors to submit their latest research on image and signal processing methods, particularly those related to feature extraction (including both handcrafted and deep learning-based methods). Possible contributions include, but are not limited to, the following: robust/invariant feature extraction, feature interpretability, lightweight deep learning models, multi-modal feature alignment and fusion, and other related research in the fields of computer vision, pattern recognition, and signal processing. Additionally, application-oriented studies in areas such as remote sensing, affective computing, and industrial production are highly welcome.

Dr. Hanlin Mo
Dr. Shuang Wang
Dr. Yu Gu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • computer vision
  • signal processing
  • feature extraction
  • handcrafted features
  • deep neural networks
  • feature reliability and interpretability
  • lightweight deep learning
  • multi-modal feature alignment and fusion

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Published Papers (1 paper)

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Research

27 pages, 3389 KB  
Article
Improved Lightweight YOLOv8n with Dynamic Sampling Convolution and CBAM Attention for UAV Wildlife Detection
by Zhi Yang, Zhijia Zhao, Xiao Xiao, Yishu Sun, Yuexing Zhang, Ziyao Men and Xinyu Deng
Electronics 2026, 15(14), 2983; https://doi.org/10.3390/electronics15142983 - 8 Jul 2026
Viewed by 284
Abstract
When UAV(Unmanned Aerial Vehicle) carry out wildlife inspection for biodiversity protection, there are challenges such as low target, complex background, variable shape and serious occlusion, which lead to insufficient accuracy and a high misjudgment rate of the existing lightweight detection model. We propose [...] Read more.
When UAV(Unmanned Aerial Vehicle) carry out wildlife inspection for biodiversity protection, there are challenges such as low target, complex background, variable shape and serious occlusion, which lead to insufficient accuracy and a high misjudgment rate of the existing lightweight detection model. We propose an improved lightweight YOLOv8n model, which aims to achieve higher accuracy and more real-time animal target detection under the UAV platform. To address the issue of small target features being easily lost in the deep network, we introduce a dynamic upsampling convolution for accurate feature-aware upsampling, which can effectively reconstructs target details and suppress background noise. In order to enhance the feature discrimination ability of the model in complex environments, a convolution block attention mechanism was integrated in the model, and the key features of the target were adaptively focused through the channel–spatial dual attention mechanism. Finally, in order to improve the positioning accuracy in dense and occluded scenes, we used MPDIoU loss function to optimize the bounding box regression, and achieve more stable and accurate alignment by minimizing the vertex distance between the prediction box and the real box. Experiments on public data sets show that the detection accuracy and efficiency of the proposed model are significantly improved compared with the original YOLOv8n: the number of model parameters is reduced by 10.7%, the amount of calculation is reduced by 9.9%, and the inference speed is improved by 25%. In terms of comprehensive performance, our method achieved a mAP@0.5 of 96.4%, a mAP@0.5:0.95 improvement of 6.0 percentage points, and an F1 score of 93.5%, while also significantly reducing the false positive rate. Experiments on self-made aerial animal data sets further fully verify that the algorithm can achieve high-precision real-time animal target detection in the actual UAV platform. Full article
(This article belongs to the Special Issue Image and Signal Processing Techniques and Applications, 2nd Edition)
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