{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T15:07:45Z","timestamp":1789052865453,"version":"build-2803163510"},"reference-count":59,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Imaging"],"abstract":"<jats:p>Fog severely degrades the visibility of small unmanned aerial vehicles (UAVs) in long-range imagery, reducing the reliability of downstream detection and tracking. This paper presents a task-driven evaluation framework that links depth-aware synthetic fog generation, image restoration, object detection, and tracking within a unified pipeline. Given the practical difficulty of collecting and annotating foggy UAV scenes, synthetic fog is generated from real clear-weather outdoor images containing UAV targets using monocular depth estimation and the atmospheric scattering model. Representative restoration methods from classical, convolutional neural network (CNN)-based, and transformer-based families are first compared, after which the selected restoration model is integrated into the downstream perception pipeline. Detection is evaluated under both clean-only and fog-inclusive training regimes using multiple YOLO11 variants, while tracking-by-detection is assessed on clean, foggy, and restored video sequences. Beyond image-level restoration metrics, the study evaluates how fog and restoration affect detection robustness and tracking performance. Within the adopted synthetic-fog protocol, the results show that increasing fog severity substantially degrades both detection and tracking, primarily through increased missed detections. Fog-inclusive training provides the most consistent improvement in robustness, whereas test-time restoration is most beneficial when the detector has been trained only on clean imagery. These findings show that restoration quality does not necessarily translate into proportional gains in downstream perception and therefore should be evaluated jointly with detection and tracking performance.<\/jats:p>","DOI":"10.3390\/jimaging12090432","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T14:11:22Z","timestamp":1789049482000},"page":"432","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Vision-Based Perception of UAV Targets Under Synthetic Fog: A Task-Oriented Evaluation"],"prefix":"10.3390","volume":"12","author":[{"given":"Amir","family":"Pouladi","sequence":"first","affiliation":[{"name":"Centre for Aerospace Research (CfAR), University of Victoria, Victoria, BC V8W 2Y2, Canada"},{"name":"Advanced Control and Intelligent Systems (ACIS) Lab, University of Victoria, Victoria, BC V8W 2Y2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"software","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"}]},{"given":"Vesal","family":"Ahsani","sequence":"additional","affiliation":[{"name":"Centre for Aerospace Research (CfAR), University of Victoria, Victoria, BC V8W 2Y2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"validation","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Haijun","family":"Li","sequence":"additional","affiliation":[{"name":"Centre for Aerospace Research (CfAR), University of Victoria, Victoria, BC V8W 2Y2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"validation","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3550-225X","authenticated-orcid":false,"given":"Homayoun","family":"Najjaran","sequence":"additional","affiliation":[{"name":"Advanced Control and Intelligent Systems (ACIS) Lab, University of Victoria, Victoria, BC V8W 2Y2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"given":"Afzal","family":"Suleman","sequence":"additional","affiliation":[{"name":"Centre for Aerospace Research (CfAR), University of Victoria, Victoria, BC V8W 2Y2, Canada"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"ref_1","unstructured":"McCartney, E.J. 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