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Author : 謝亞
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (143 download)
Download or read book 3D Reconstruction System Using Multi RGB-D Cameras for Phenotyping and Plant Movement Monitoring written by 謝亞 and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yonghuai Liu
Publisher : Springer Nature
ISBN 13 : 3030440702
Total Pages : 736 pages
Book Rating : 4.0/5 (34 download)
Download or read book 3D Imaging, Analysis and Applications written by Yonghuai Liu and published by Springer Nature. This book was released on 2020-09-11 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is designed for postgraduate studies in the field of 3D Computer Vision. It also provides a useful reference for industrial practitioners; for example, in the areas of 3D data capture, computer-aided geometric modelling and industrial quality assurance. This second edition is a significant upgrade of existing topics with novel findings. Additionally, it has new material covering consumer-grade RGB-D cameras, 3D morphable models, deep learning on 3D datasets, as well as new applications in the 3D digitization of cultural heritage and the 3D phenotyping of crops. Overall, the book covers three main areas: ● 3D imaging, including passive 3D imaging, active triangulation 3D imaging, active time-of-flight 3D imaging, consumer RGB-D cameras, and 3D data representation and visualisation; ● 3D shape analysis, including local descriptors, registration, matching, 3D morphable models, and deep learning on 3D datasets; and ● 3D applications, including 3D face recognition, cultural heritage and 3D phenotyping of plants. 3D computer vision is a rapidly advancing area in computer science. There are many real-world applications that demand high-performance 3D imaging and analysis and, as a result, many new techniques and commercial products have been developed. However, many challenges remain on how to analyse the captured data in a way that is sufficiently fast, robust and accurate for the application. Such challenges include metrology, semantic segmentation, classification and recognition. Thus, 3D imaging, analysis and their applications remain a highly-active research field that will continue to attract intensive attention from the research community with the ultimate goal of fully automating the 3D data capture, analysis and inference pipeline.
Author : Owen Watson
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (853 download)
Download or read book Full 3D Reconstruction From Multiple RGB-D Cameras written by Owen Watson and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Each pair is aligned by a two-phase procedure that transforms the data from the coordinate system of the camera at a lower level in the alignment tree to that of the higher. The transformation between each pair is catalogued and used to reconstruction of incoming frames from the cameras. Once calibrated, cameras are assumed to be independent and their successive frames are compared to detect motion. The catalogued transformations are updated on instances that motion is detected essentially correcting misalignment. \par At the end of the calibration process the reconstructed scene generated from the combined data would contain relative alignment accuracy throughout all regions. Using this proposed algorithm reconstruction accuracy of over 90% was achieved for systems calibrated with the angle between the cameras 45 degrees or more. Once calibrated the cameras can observe and reconstruct a scene on every frame. This is reliant on the assumption that the cameras will be fixed; however, in a practical sense this cannot be guaranteed. Systems maintained over 90% reconstruction accuracy during operation with induced misalignment. This procedure also maintained the reconstruction accuracy from calibration during execution for up to an hour. The fundamental contribution of this work is the novel concept of using overlap as a means of expressing how a group of cameras are connected. Building a spanning tree representation of the given system of cameras provides a useful structure for uniquely expressing the relationship between the cameras. A calibration procedure that is effective with low overlapping views is also contributed. The final contribution is a procedure to maintain reconstruction accuracy overtime in a mostly static environment.
Author : Kyoung-Rok Lee
Publisher :
ISBN 13 : 9781321361797
Total Pages : 94 pages
Book Rating : 4.3/5 (617 download)
Download or read book Accurate, Efficient, and Robust 3D Reconstruction of Static and Dynamic Objects written by Kyoung-Rok Lee and published by . This book was released on 2014 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D reconstruction is the method of creating the shape and appearance of a real scene or objects, given a set of images on the scene. Realistic scene or object reconstruction is essential in many applications such as robotics, computer graphics, Tele- Immersion (TI), and Augmented Reality (AR). This thesis explores accurate, efficient, and robust methods for the 3D reconstruction of static and dynamic objects from RGB-D images. For accurate 3D reconstruction, the depth maps should have high geometric quality and resolution. However, depth maps are often captured at low-quality or low resolution, due to either sensor hardware limitations or errors in estimation. A new sampling-based robust multi-lateral filtering method is proposed herein to improve the resolution and quality of depth data. The enhancement is achieved by selecting reliable depth samples from a neighborhood of pixels and applying multi-lateral filtering using colored images that are both high-quality and high-resolution. Camera pose estimation is one of the most important operations in 3D reconstruction, since any minor error in this process may distort the resulting reconstruction. We present a robust method for camera tracking and surface mapping using a handheld RGB-D camera, which is effective for challenging situations such as during fast camera motion or in geometrically featureless scenes. This is based on the quaternion-based orientation estimation method for initial sparse estimation and a weighted Iterative Closest Point (ICP) method for dense estimation to achieve a better rate of convergence for both the optimization and accuracy of the resulting trajectory. We present a novel approach for the reconstruction of static object/scene with realistic surface geometry using a handheld RGB-D camera. To obtain high-resolution RGB images, an additional HD camera is attached to the top of a Kinect and is calibrated to reconstruct a 3D model with realistic surface geometry and high-quality color textures. We extend our depth map refinement method by utilizing high frequency information in color images to recover finer-scale surface geometry. In addition, we use our robust camera pose estimation to estimate the orientation of the camera in the global coordinate system accurately. For the reconstruction of moving objects, a novel dynamic scene reconstruction system using multiple commodity depth cameras is proposed. Instead of using expensive multi-view scene capturing setups, our system only requires four Kinects, which are carefully located to generate full 3D surface models of objects. We introduce a novel depth synthesis method for point cloud densification and noise removal in the depth data. In addition, a new weighting function is presented to overcome the drawbacks of the existing volumetric representation method.
Author : Irfan Ullah
Publisher : Frontiers Media SA
ISBN 13 : 2832541577
Total Pages : 185 pages
Book Rating : 4.8/5 (325 download)
Download or read book Nexus Between Innovations, Environmental Challenges and Labor Mobility written by Irfan Ullah and published by Frontiers Media SA. This book was released on 2024-01-15 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical arguments associate labor migration and regional innovation capacity are based on technological innovation and knowledge diffusion that stimulate productivity increase in firms, institutions and regions. Labor mobility may contribute efficiently in the knowledge spillover and diffusion and because migrants can utilizes the knowledge and skill they gain from parental institutions which exploit in the host country. The migrated skill worker increase the knowledge accumulation and spillover which leads to increase the productivity of firm, institutions and region. Human capital migration is essential for knowledge diffusion because it enables the transfer of tacit information between businesses or institutions, enhancing productivity. In this context of externalities generation, skilled labor mobility is an important mechanism for the interregional transfer of technological knowledge diffusion.
Author : Andrea Fossati
Publisher : Springer Science & Business Media
ISBN 13 : 1447146395
Total Pages : 220 pages
Book Rating : 4.4/5 (471 download)
Download or read book Consumer Depth Cameras for Computer Vision written by Andrea Fossati and published by Springer Science & Business Media. This book was released on 2012-10-04 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential of consumer depth cameras extends well beyond entertainment and gaming, to real-world commercial applications. This authoritative text reviews the scope and impact of this rapidly growing field, describing the most promising Kinect-based research activities, discussing significant current challenges, and showcasing exciting applications. Features: presents contributions from an international selection of preeminent authorities in their fields, from both academic and corporate research; addresses the classic problem of multi-view geometry of how to correlate images from different viewpoints to simultaneously estimate camera poses and world points; examines human pose estimation using video-rate depth images for gaming, motion capture, 3D human body scans, and hand pose recognition for sign language parsing; provides a review of approaches to various recognition problems, including category and instance learning of objects, and human activity recognition; with a Foreword by Dr. Jamie Shotton.
Author : Ulrich Schurr
Publisher : Frontiers Media SA
ISBN 13 : 283254567X
Total Pages : 191 pages
Book Rating : 4.8/5 (325 download)
Download or read book IPPS 2022 - Plant Phenotyping for a Sustainable Future written by Ulrich Schurr and published by Frontiers Media SA. This book was released on 2024-03-06 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hanyu Deng
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (113 download)
Download or read book Real-time Dense 3D Reconstruction with RGB-D Camera written by Hanyu Deng and published by . This book was released on 2019 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Urs Schmidhalter
Publisher : Frontiers Media SA
ISBN 13 : 2889711595
Total Pages : 399 pages
Book Rating : 4.8/5 (897 download)
Download or read book High-Throughput Field Phenotyping to Advance Precision Agriculture and Enhance Genetic Gain written by Urs Schmidhalter and published by Frontiers Media SA. This book was released on 2021-08-10 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shakil Ahmed
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Real-Time Interactive 3D Reconstruction of Indoor Environments With High Accuracy written by Shakil Ahmed and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D registration of depth images has been studied extensively in the past. With emergence of low cost RGB-D cameras, many applications have emerged. Yet, the quality of alignment has much to improve. It remains a challenge to create a 3D model of the environment with high accuracy which could be used for engineering applications. Moreover, challenging scenarios where features are scarce, handling large areas as scene, enabling the user to freely roam around the scene for image acquisition in a practical manner, guiding the user in taking better images and accomplishing all of this with low cost RGB-D camera in real time is a subject which is yet to be improved. In this thesis, we address all this challenges by designing and implementing a mobile system that rely on markers. Our system detects and matches markers in real-time with very low CPU load. Moreover, this mobile 3D reconstruction system is interactive which enables a user not only to move freely while doing 3D reconstruction, but also makes the user aware of current status of 3D reconstruction in real-time.
Author : Jianfeng Zhou
Publisher : Springer Nature
ISBN 13 : 3030737349
Total Pages : 249 pages
Book Rating : 4.0/5 (37 download)
Download or read book High-Throughput Crop Phenotyping written by Jianfeng Zhou and published by Springer Nature. This book was released on 2021-07-17 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the innovations in crop phenotyping using emerging technologies, i.e., high-throughput crop phenotyping technology, including its concept, importance, breakthrough and applications in different crops and environments. Emerging technologies in sensing, machine vision and high-performance computing are changing the world beyond our imagination. They are also becoming the most powerful driver of the innovation in agriculture technology, including crop breeding, genetics and management. It includes the state of the art of technologies in high-throughput phenotyping, including advanced sensors, automation systems, ground-based or aerial robotic systems. It also discusses the emerging technologies of big data processing and analytics, such as advanced machine learning and deep learning technologies based on high-performance computing infrastructure. The applications cover different organ levels (root, shoot and seed) of different crops (grains, soybean, maize, potato) at different growth environments (open field and controlled environments). With the contribution of more than 20 world-leading researchers in high-throughput crop phenotyping, the authors hope this book provides readers the needed information to understand the concept, gain the insides and create the innovation of high-throughput phenotyping technology.
Author : Anders Brandt
Publisher : Springer
ISBN 13 : 3319300873
Total Pages : 210 pages
Book Rating : 4.3/5 (193 download)
Download or read book Shock & Vibration, Aircraft/Aerospace, Energy Harvesting, Acoustics & Optics, Volume 9 written by Anders Brandt and published by Springer. This book was released on 2016-04-26 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock Vibration, Aircraft /Aerospace, Energy Harvesting, Acoustics Optics, Volume 9. Proceedings of the 34th IMAC, A Conference and Exposition on Dynamics of Multiphysical Systems: From Active Materials to Vibroacoustics, 2016, the ninth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early fi ndings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on:• Energy Harvesting/div• Adaptive Support• Shock Calibration• Operating Data Applications• Aerospace Testing Techniques• Aircraft /Aerospace Applications• Joints• Acoustics & Optics• Other Sensing
Author : Bill Triggs
Publisher : Springer Science & Business Media
ISBN 13 : 3540679731
Total Pages : 394 pages
Book Rating : 4.5/5 (46 download)
Download or read book Vision Algorithms: Theory and Practice written by Bill Triggs and published by Springer Science & Business Media. This book was released on 2000-09-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-workshop proceedings of the International Workshop on Vision Algorithms held in Corfu, Greece in September 1999 in conjunction with ICCV'99. The 15 revised full papers presented were carefully reviewed and selected from 65 submissions; each paper is complemented by a brief transcription of the discussion that followed its presentation. Also included are two invited contributions and two expert reviews as well as a panel discussion. The volume spans the whole range of algorithms for geometric vision. The authors and volume editors succeeded in providing added value beyond a mere collection of papers and made the volume a state-of-the-art survey of their field.
Author : Thomas Luhmann
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110607387
Total Pages : 941 pages
Book Rating : 4.1/5 (16 download)
Download or read book Close-Range Photogrammetry and 3D Imaging written by Thomas Luhmann and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-11-18 with total page 941 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the third edition of the well-known guide to close-range photogrammetry. It provides a thorough presentation of the methods, mathematics, systems and applications which comprise the subject of close-range photogrammetry, which uses accurate imaging techniques to analyse the three-dimensional shape of a wide range of manufactured and natural objects.
Author : Wanneng Yang
Publisher : Frontiers Media SA
ISBN 13 : 2832520960
Total Pages : 266 pages
Book Rating : 4.8/5 (325 download)
Download or read book State-of-the-art technology and applications in crop phenomics, volume II written by Wanneng Yang and published by Frontiers Media SA. This book was released on 2023-06-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hamlyn G Jones
Publisher : Oxford University Press, USA
ISBN 13 : 0199207798
Total Pages : 381 pages
Book Rating : 4.1/5 (992 download)
Download or read book Remote Sensing of Vegetation written by Hamlyn G Jones and published by Oxford University Press, USA. This book was released on 2010-07-15 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible yet rigorous introduction to remote sensing and its application to the study of vegetation for advanced undergraduate and graduate students. The underlying physical and mathematical principles of the techniques disucussed are explained in a way readily understood by those without a strong mathematical background.
Author : K. C. Santosh
Publisher : Springer
ISBN 13 : 9811391815
Total Pages : 717 pages
Book Rating : 4.8/5 (113 download)
Download or read book Recent Trends in Image Processing and Pattern Recognition written by K. C. Santosh and published by Springer. This book was released on 2019-07-19 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume set constitutes the refereed proceedings of the Second International Conference on Recent Trends in Image Processing and Pattern Recognition (RTIP2R) 2018, held in Solapur, India, in December 2018. The 173 revised full papers presented were carefully reviewed and selected from 374 submissions. The papers are organized in topical sections in the tree volumes. Part I: computer vision and pattern recognition; machine learning and applications; and image processing. Part II: healthcare and medical imaging; biometrics and applications. Part III: document image analysis; image analysis in agriculture; and data mining, information retrieval and applications.
