Download or read book Evaluation of Night Vision Devices for Image Fusion Studies written by Cheng W. Kiang and published by . This book was released on 2004-12-01 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Night Vision Devices (NVD) using Image Intensification (II) technology are among the most important sensors used by ground troops and aviators in night operations for modern combat. With the intensified images from these devices, soldiers can see an enemy's movement better and further in darkness. This thesis explores different test methods in evaluating the performances and sensitivities of several NVDs for future image fusion studies. Specification data such as sensitivity, resolution (Modulation Transfer Function) and pixel size are obtained. Comparative analyses of the collected results are made to characterize the performances of the different NVDs. A new method using MATLAB programming to objectively analyze digitized images for characterization of II based NVDs is proposed. This test method can also be extended to the evaluation of Thermal Imaging (TI) systems for comparative analysis with II NVDs. In addition, the feasibility of testing NVDs using both II and TI technologies, with common operating conditions and target boards is discussed. Finally, the potential of using these digitized images for image fusion studies is verified with the test and evaluation results.
Download or read book Investigation of Image Fusion Algorithms and Performance Evaluation for Night Vision written by Yin Chen and published by . This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Image fusion is a technique used to combine multiple source images of the same scene to obtain a more complete and accurate view at the scene. Numerous image fusion algorithms have been developed in the past years. The fusion approaches range in complexity from those which are extremely simple to those which are extremely complex. Our investigation focuses on the fusion algorithms and quality measures for the night vision applications.
Download or read book Night Vision Processing and Understanding written by Lianfa Bai and published by Springer. This book was released on 2019-01-11 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically analyses the latest insights into night vision imaging processing and perceptual understanding as well as related theories and methods. The algorithm model and hardware system provided can be used as the reference basis for the general design, algorithm design and hardware design of photoelectric systems. Focusing on the differences in the imaging environment, target characteristics, and imaging methods, this book discusses multi-spectral and video data, and investigates a variety of information mining and perceptual understanding algorithms. It also assesses different processing methods for multiple types of scenes and targets.Taking into account the needs of scientists and technicians engaged in night vision optoelectronic imaging detection research, the book incorporates the latest international technical methods. The content fully reflects the technical significance and dynamics of the new field of night vision. The eight chapters cover topics including multispectral imaging, Hadamard transform spectrometry; dimensionality reduction, data mining, data analysis, feature classification, feature learning; computer vision, image understanding, target recognition, object detection and colorization algorithms, which reflect the main areas of research in artificial intelligence in night vision. The book enables readers to grasp the novelty and practicality of the field and to develop their ability to connect theory with real-world applications. It also provides the necessary foundation to allow them to conduct research in the field and adapt to new technological developments in the future.
Download or read book Night Vision Goggle Research and Training Issues for Ground Forces a Literature Review written by Jean L. Dyer and published by . This book was released on 1998 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusion of Night Vision and Thermal Images written by Tiong Tien Neo and published by . This book was released on 2006 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Night vision and thermal images are extensively used in military operations, as they help in mission planning and executions tasks. Image fusion effectively combines information present in each type of image. This research explored two wavelet-based image fusion approaches for night vision and thermal images; namely wavelet transform fusion and region-based fusion. Morphological methods designed to improve the image segmentation step were considered to improve image contrast and a global image quality index was applied to investigate the information content improvement resulting form the fusion process. Finally, a MATLAB-based graphical user interface was designed to assist the user in evaluating the benefits of the fusion process. Results showed the selection process is able to narrow to the best fused image with a satisfactory accuracy.
Download or read book Survey of Image Quality Criteria for Passive Night Vision Devices written by Joseph C. Richmond and published by . This book was released on 1974 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Image Fusion written by Gang Xiao and published by Springer Nature. This book was released on 2020-08-31 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically discusses the basic concepts, theories, research and latest trends in image fusion. It focuses on three image fusion categories – pixel, feature and decision – presenting various applications, such as medical imaging, remote sensing, night vision, robotics and autonomous vehicles. Further, it introduces readers to a new category: edge-preserving-based image fusion, and provides an overview of image fusion based on machine learning and deep learning. As such, it is a valuable resource for graduate students and scientists in the field of digital image processing and information fusion.
Download or read book An Assessment of the Impact of Fused Monochrome and Fused Color Night Vision Displays on Reaction Time and Accuracy in Target Detection written by Matthew Thomas Sampson and published by . This book was released on 2001 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Night Vision Devices (NVDs) employed by the military fall into two categories: Image Intensifiers (I²) also known as Night Vision Goggles (NVGs) and Infrared (IR). Each sensor provides unique visual information not available to the unaided human visual system. However, these devices have limitations and they have been listed as a causal factor in many crashes of military aircraft at night. Researches hypothesize that digitally fusing that output from these sensors into one image and then artificially coloring the image will improve an NVD user's visual performance. The purpose of this thesis was to determine if fusion and coloring of static, natural NVG and IR imagery will improve reaction time and accuracy in target detection.
Download or read book Evaluation of Visual Acuity with Gen 3 Night Vision Goggles written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using laboratory simulations, visual performance was measured at luminance and night vision imaging system (NVIS) radiance levels typically encountered in the natural nocturnal environment. Comparisons were made between visual performance with unaided vision and that observed with subjects using image intensification. An Amplified Night Vision Imaging System (ANVIS6) binocular image intensifier was used. Light levels available in the experiments (using video display technology and filters) were matched to those of reflecting objects illuminated by representative night-sky conditions (e.g., full moon, starlight). Results show that as expected, the precipitous decline in foveal acuity experienced with decreasing mesopic luminance levels is effectively shifted to much lower light levels by use of an image intensification system. The benefits of intensification are most pronounced foveally, but still observable at 20 deg eccentricity. Binocularity provides a small improvement in visual acuity under both intensified and unintensified conditions. Bradley, Arthur and Kaiser, Mary K. Ames Research Center ...
Download or read book Selected Papers on Night Vision Technology written by R. Hradaynath and published by SPIE-International Society for Optical Engineering. This book was released on 2001 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of 104 papers is divided into two parts. Part One, Image Intensification, focuses on developments with image intensified tubes. Part Two, Thermal Imaging, concentrates on the practical applications of night vision technology for its main users: the armed forces.
Download or read book Proceedings of the Augmented Visual Display AVID Research Workshop written by Mary K. Kaiser and published by . This book was released on 1993 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Night Vision Goggles for Maritime Search and Rescue Volume 2 Data Appendix written by and published by . This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments were conducted during 1989 by the U.S. Coast Guard Research and Development (R & D) Center to evaluate night vision goggles (NVGs) for their effectiveness in detecting small targets at night. Three types of NVGs were evaluated: the AN/AVS-6 Aviators Night Vision Imaging System (ANVIS) NVG was tested onboard Coast Guard HH-3 and Ch-3 helicopters, and the AN/PVS-5C and AN/PVS-7A NVGs were tested onboard 41-foot Coast Guard utility boats (STBs). Simulated persons in the water (PIWs), 4- and 6-person life rafts, 18- and 21- foot white boats, and white, personal flotation device (PFD) strobe lights were employed as targets during realistically-simulated search missions. A total of 1,490 target detection opportunities were generated during the experiments. These data were analyzed to determine which of 25 search parameters of interest exerted a statistically-significant influence on target detection probability. (JS).
Download or read book Evaluation of Night Vision Goggles for Maritime Search and Rescue Technical report written by and published by . This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feasibility of Using the AN PVS 14 Monocular Night Vision Device for Pilotage written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AN/PVS-14 Monocular Night Vision Device (MNVD) high performance image' intensification system was designed for ground. use. During a USAARL optical and visual evaluation of the MNVD, the authors noted that the user could fuse the intensified image with the unaided or nondisplay viewing eye. The fused images from the right and left eyes provided some color and depth perception under certain night lighting conditions and allowed the unaided eye to remain dark adapted. This assessment explored the potential use of the MNVD for pilotage using two experienced night vision goggle (NVG) UH-60 pilots and two experienced AH-64 pilots, who also used the helmet display unit (HDU) with symbology and thermal imagery.
Download or read book Night Vision and Electro optics written by and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Image Fusion written by Tania Stathaki and published by Elsevier. This book was released on 2011-08-29 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth in the use of sensor technology has led to the demand for image fusion: signal processing techniques that can combine information received from different sensors into a single composite image in an efficient and reliable manner. This book brings together classical and modern algorithms and design architectures, demonstrating through applications how these can be implemented. Image Fusion: Algorithms and Applications provides a representative collection of the recent advances in research and development in the field of image fusion, demonstrating both spatial domain and transform domain fusion methods including Bayesian methods, statistical approaches, ICA and wavelet domain techniques. It also includes valuable material on image mosaics, remote sensing applications and performance evaluation. This book will be an invaluable resource to R&D engineers, academic researchers and system developers requiring the most up-to-date and complete information on image fusion algorithms, design architectures and applications. - Combines theory and practice to create a unique point of reference - Contains contributions from leading experts in this rapidly-developing field - Demonstrates potential uses in military, medical and civilian areas
