With the diffusion of advanced image editing software, image manipulation is becoming an impelling aspect also for satellite images. In a copy-move (CM) forgery, part of the image is copied and pasted elsewhere into t...
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ISBN:
(纸本)9781510666955;9781510666962
With the diffusion of advanced image editing software, image manipulation is becoming an impelling aspect also for satellite images. In a copy-move (CM) forgery, part of the image is copied and pasted elsewhere into the same image. In the satellite domain, CM can be performed with the intent of propagating misleading information on the geography and morphology of the landscapes pictured in the images. The best algorithms for CM detection rely on a multi-step procedure involving extraction of image descriptors (keypoints), keypoint matching and finally clustering, for the localization of the forged area. The large size of many satellite images and their richness of details, often prevent the adoption of off-the-shelf tools developed for multimedia images. Due to the large number of keypoints typically present in satellite images, in fact, the computational complexity and memory requirements for SIFT keypoints extraction, matching, clustering and forgery localisation is prohibitive. In this paper, we propose a CM detection algorithm that can successfully process very high resolution satellite images, where off-the-shelf alternatives are crashing due to system memory exhaustion. The proposed algorithm is based on three main strategies powered by GPU acceleration: i) multi-threaded tile-based SIFT keypoints extraction, ii) optimised batch-based descriptors matching, iii) clustering and localisation of manipulated pixels exploiting tensors instead of a sliding window approach. Experiments carried out on images belonging to the ESA WorldView-2 European Cities dataset and on a set of hand-made copy-move forgeries with resolution above 1 Gigapixel, show the good performance of the proposed algorithm in terms of processing time and memory consumption.
The detection head of most object detection algorithms obtains the category information and location information through classification branch and regression branch, respectively. Usually, the two branches do not infl...
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In the field of remotesensing, multimodal data matching is a problem with great challenges, and the matching between SAR and visible light images is tremendously difficult, because there is obvious speckle noise in S...
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With the growing applications of water operations, water surface object detection tasks are facing new challenges. In this paper, we focus on improving the performance of water surface small object detection. Due to t...
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ISBN:
(纸本)9798350344868;9798350344851
With the growing applications of water operations, water surface object detection tasks are facing new challenges. In this paper, we focus on improving the performance of water surface small object detection. Due to the limitations of singlesensor in water environments, we propose RCFNet, a novel small object detection method based on radar-vision fusion. RCFNet fuses features captured by radar and camera in multiple stages to generate more effective target feature representations for small object detection on water surfaces. In particular, we propose a multi-frame radar feature fusion module and an image-guided radar feature enhancement module to enhance the radar features. This method fully utilizes radar and camera data information, improving the performance of small object detection on water surfaces. RCFNet was evaluated on the publicly released water surface floating dataset Flow, achieving an Average Precision (AP50) of 0.9316, which is a state-of-the-art result.
The reconstruction of motion blur is a significant subject in remotesensingimageprocessing. It has a great effect on the follow-up processes of target detection and recognition. To meet the needs of on-board intell...
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Road detection from remotesensingimages is vital in various applications, such as urban planning, transportation management, and navigation systems. In this work, we propose a methodology for road detection using de...
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NIR images, capturing light beyond visible spectrum, are useful in remotesensing, astronomy, etc. Converting them to RGB format makes them better to interpret for humans. This paper introduces a novel approach for NI...
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ISBN:
(纸本)9798350367393;9798350367386
NIR images, capturing light beyond visible spectrum, are useful in remotesensing, astronomy, etc. Converting them to RGB format makes them better to interpret for humans. This paper introduces a novel approach for NIR to RGB image colorization using GAN. Our primary contribution is a Conditional Generative Adversarial Network (cGAN) with an enhanced Attention UNet serving as its generator. With this model, we have achieved an Angular Error of 15.55, PSNR of 16.41 and SSIM of 0.69 which is comparable to the other prepared models' like pix2pix & Attention UNet as well as more visually appealing than all of them.
Existing deep learning-based remotesensing spatiotemporal fusion (STF) relies on a data-driven paradigm without considering the degradation prior modeling from the coarse-to fine-resolution images. This makes the lea...
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remotesensingimage fusion, i.e., fusing remotesensingimages from different sensors or different time into a comprehensive image, can integrate image information for all kinds of image tasks, such as object detecti...
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Optical images and synthetic aperture radar (SAR) remotesensingimages are highly complementary information for Earth observation and applications. Accurate registration of these two data types is essential for subse...
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