Fast ship contour extraction in sar images

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WebJun 26, 2024 · To improve the contour extraction results of a ship head, contour refinement strategies and a Gini coefficient-based criterion were presented to remove non-shiphead contours with large... WebNov 1, 2024 · In research on ship monitoring with SAR images, based on the subaperture crosscorrelation magnitude algorithm, Brekke et al. [15] added a sub-band extraction method to enhance the contrast...

Ship Detection From Optical Satellite Images Based on Sea …

WebDec 18, 2013 · The ship closed-contour image is first produced using a standard algorithm. A new two-step process is then presented for exact azimuth angle estimation. Modified criteria of centerline and minimum enclosing rectangle (MER) extraction are developed, and applied to calculate the ship dimension. WebAbstract: Fast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and shapes … screening number department of education

Fast ship contour extraction in SAR images - Nie - 2024

WebJan 7, 2024 · To classify a ship accurately in SAR images, the key point is to excavate the discriminative features of SAR images so that they can reflect the essential difference between different... WebFast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and... DOAJ is a community … WebDec 1, 2009 · In this study, a joint ship contour extraction method (Faster R-CNN, FNLM, and Chan-Vese model; FFCV method) was proposed to obtain detailed ship information from SAR images, including ship ... screening newborn

Ship Classification in SAR Images Using a New Hybrid CNN

Multi-Source Remote Sensing Image Fusion for Ship …

WebOct 11, 2024 · Synthetic aperture radar (SAR) is one of the most widely used remote sensing monitoring methods for large-scale marine activities. Due to the influence of speckle noise, sea clutter and complex environment, ship detection of SAR images is still a challenging task. Based on the multi-layer selective cognition characteristics of the … WebIn [12], both ship bounding boxes and contours are extracted based on the active contour algorithm. These ship detection approaches are based on manually extracted features, experienced statistic model and traditional … screening noticeWebMar 1, 2014 · A novel computational model for automatic ship detection in optical satellite images that selects salient candidate regions across entire detection scene by using a bottom-up visual attention mechanism and two complementary types of top-down cues are employed to discriminate the selected ship candidates. 117 screening not found icd10

"WebFast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and shapes extracted from … " - Fast ship contour extraction in sar images

Fast ship contour extraction in sar images

Multi-feature extraction of ships from SAR images Request PDF

WebInstitution of Engineering and Technology - Wiley Online Library WebMay 30, 2024 · Fast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and shapes …

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WebOct 29, 2024 · Ship detection on the SAR images for marine monitoring has a wide usage. SAR technology helps us to have a better monitoring over intended sections, without considering atmospheric conditions, or image shooting time. In recent years, with advancements in convolutional neural network (CNN), which is one of the well-known … WebDec 1, 2013 · The ship closed-contour image is first produced using a standard algorithm. A new two-step process is then presented for exact azimuth angle estimation. Modified criteria of centerline and...

WebFeb 26, 2013 · The real SAR images, e.g. ALOS-1 PALSAR and COSMO-SkyMed SAR images, together with in-situ GPS data were collected and used to validate the performance of the proposed approach for coastline ... WebFeb 23, 2024 · The SAR ship detection dataset (SSDD) was selected and finely relabeled to evaluate the contour extraction performance. An evaluation index , including quantitative …

WebDec 18, 2013 · The ship closed-contour image is first produced using a standard algorithm. A new two-step process is then presented for exact azimuth angle estimation. Modified … WebSep 19, 2024 · Unlike optical satellites, synthetic aperture radar (SAR) satellites can operate all day and in all weather conditions, so they have a broad range of applications in the field of ocean monitoring. The ship targets’ contour information from SAR images is often unclear, and the background is complicated due to the influence of sea clutter and …

WebDec 26, 2016 · Ship target recognition has always been a hot issue in the field of ocean surveillance. Due to the serious shortage of samples in ship target recognition for synthetic aperture radar (SAR) images, the template-based method is still one of the most effective ways to solve the problem. In this letter, we put forward a novel ship recognition …

WebAug 26, 2024 · Representative results of CycleGAN on the style translation of satellite ship images and SAR ship images: (left) the satellite image is translated to SAR image; (right) the SAR image is translated to satellite image. 3.2. Improved Libra RetinaNet Tiny object detection with the complex scene is a great challenge in the SAR ship detection task. screening northrop grummanWebJan 1, 2024 · Fast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and shapes … screening nutricionalWebDec 2, 2024 · Deep learning algorithms have been widely utilized for synthetic aperture radar (SAR) target detection. Nevertheless, the traditional feature extraction methods and deep learning methods achieve improved ship detection accuracy at a cost of increased complexity and lower detection speed. As detection speed also is meaningful, especially … screening nutritionWebJul 5, 2024 · Abstract and Figures. This study aims to detect vessels with lengths ranging from about 70 to 300 m, in Gaofen-3 (GF-3) SAR images with ultrafine strip-map (UFS) mode as fast as possible. Based on ... screening not covered with routine examWebFast ship contour extraction in synthetic aperture radar (SAR) images plays an important role in sea surface surveillance. Ship contours and sizes and shapes extracted from them are... screening ny.gov screening nysWebFeb 26, 2024 · High-resolution images provided by synthetic aperture radar (SAR) play an increasingly important role in the field of ship detection. Numerous algorithms have been so far proposed and relative … screening nursing