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6 kirjaa tekijältä Yitzhak Weissman

Optical Network Theory

Optical Network Theory

Yitzhak Weissman

Artech House
1992
sidottu
This reference blends the concepts of optics and microwave theory. It is logically organized in two main parts, the first section deals with network analysis, while the second concentrates on signal analysis. As a whole, the text focuses on the fundamental aspects of optical networks. Methodology, rather than analysis, is the focus of the book. The discussion provides the tools you need to perform your own in-depth analysis of optical networks.
Lenticular Imaging

Lenticular Imaging

Yitzhak Weissman

Pop3dart
2018
sidottu
This book treats the visual and the optical aspects of lenticular imaging comprehensively. The theoretical discussion is supplemented by numerous examples and figures which explain and illustrate the underlying principles, to make the book accessible and useful for scholars, practitioners, and graphical artists. However, this book is not a practical guide for making lenticular pictures.The most striking capability of lenticular pictures is the display of depth. 3D lenticular pictures can be enjoyed without any visual aids, and are viewable from within a comfortably large volume. Within this volume, the picture displays change of perspective according to the viewing angle and shows the object with the correct geometry. With proper design, the changes in perspective can be smooth and continuous. These characteristics create a compelling virtual reality illusion, like the effect of holograms.The tradeoff between the amount of displayed depth and the visual quality is established and discussed. The overall resolution of the picture determines this compromise. Basic mechanisms affecting the overall resolution are optical aberrations and print characteristics. For digital print, it is suggested that if lenticular sheets are adjusted to fit the printer characteristics, the overall resolution may be significantly improved.The unique optical properties of lenticules and lenticular sheets are crucial for the understanding of lenticular imaging, and, as such, they receive much attention in the book. The optical mechanism of a lenticular picture is explained using simplified, yet accurate models based on classical optical imaging theory. The more advanced subjects of optical resolution and distortions are treated numerically, using ray-tracing methods. The results of this study are presented here for the first time and are used to explain the visual features of lenticular pictures. They are also important for future research and development.Numerous other topics are essential for understanding and using lenticular imaging. These topics include calibration of lenticular sheets, content preparation for 3D pictures, and viewing space design. All these issues are treated and presented in detail, including many practical examples.Electronic display systems underwent rapid evolution in recent fifty years. From early bulky, monochrome, and distorted CRT displays, modern flat-panel displays feature vibrant color and perfect geometry. The resolution, contrast, and brightness reached the highest standards of market demands. Perhaps the last challenge remaining to be conquered by display engineers is the creation of a high-quality electronic 3D display that is viewable without any aids, like a lenticular picture. This challenge attracted much attention, but, despite vast efforts, it is still beyond reach.One of the most popular approaches to making an electronic 3D display is based on lenticular imaging. A separate chapter is devoted to the discussion of this technology. Although electronic and printed displays differ profoundly, the methodology of printed pictures can be used for the study and analysis of electronic lenticular displays, although with several modifications. The book outlines this application, to allow future study and development of such displays benefit from the research presented in this book.
Lenticular Imaging

Lenticular Imaging

Yitzhak Weissman

Pop3dart
2018
pokkari
This book treats comprehensively the visual and the optical aspects of lenticular imaging. The theoretical discussion is supplemented by numerous examples and figures which explain and illustrate the underlying principles, to make the book accessible and useful for scholars, practitioners, and graphical artists. However, this book is not a practical guide for making lenticular pictures. The most striking capability of lenticular pictures is the display of depth. 3D lenticular pictures can be enjoyed without any visual aids, and are viewable from within a comfortably large volume. Within this volume, the picture displays change of perspective according to the viewing angle and shows the object with the correct geometry. With proper design, the changes in perspective can be smooth and continuous. These characteristics create a compelling virtual reality illusion, like the effect of holograms. The tradeoff between the amount of displayed depth and the visual quality is established and discussed. The overall resolution of the picture determines this compromise. Basic mechanisms affecting the overall resolution are optical aberrations and print characteristics. For digital print, it is suggested that if lenticular sheets are adjusted to fit the printer characteristics, the overall resolution may be significantly improved. The unique optical properties of lenticules and lenticular sheets are crucial for the understanding of lenticular imaging, and, as such, they receive much attention in the book. The optical mechanism of a lenticular picture is explained using simplified, yet accurate models based on classical optical imaging theory. The more advanced subjects of optical resolution and distortions are treated numerically, using ray-tracing methods. The results of this study are presented here for the first time and are used to explain the visual features of lenticular pictures. They are also important for future research and development. Numerous other topics are essential for understanding and using lenticular imaging. These topics include calibration of lenticular sheets, content preparation for 3D pictures, and viewing space design. All these issues are treated and presented in detail, including many practical examples. Electronic display systems underwent rapid evolution in recent fifty years. From early bulky, monochrome, and distorted CRT displays, modern flat-panel displays feature vibrant color and perfect geometry. The resolution, contrast, and brightness reached the highest standards of market demands. Perhaps the last challenge remaining to be conquered by display engineers is the creation of a high-quality electronic 3D display that is viewable without any aids, like a lenticular picture. This challenge attracted much attention, but, despite vast efforts, it is still beyond reach. One of the most popular approaches to making an electronic 3D display is based on lenticular imaging. A separate chapter is devoted to the discussion of this technology. Although electronic and printed displays differ profoundly, the methodology of printed pictures can be used for the study and analysis of electronic lenticular displays, although with several modifications. The book outlines this application, to allow future study and development of such displays benefit from the research presented in this book.
The 3D Moiré Effect

The 3D Moiré Effect

Yitzhak Weissman

Pop3dart
2023
sidottu
The 3D moir effect creates an impressive 3D illusion that doesn't require any visual aids to observe. Although it has been known for a while, it has recently gained more attention due to advancements in printing technologies that allow for commercial and artistic exploration. Initially, it was used to produce images of floating planes. Gradually, it has been discovered that the surface can be sculpted into various forms, like a hemisphere, which has opened up new applications and increased interest in the effect. This book explains the theoretical foundations of the 3D moir effect and how to sculpt the display into different surface geometries. It provides numerical and analytical methods for the computation of the image-warping transformation involved in the sculpting process. The book is based on original and hitherto unpublished research. It explores two types of 3D moir assemblies: optical and parallax-barrier. The optical category offers superior imaging and visual qualities and involves optical micro-lens arrays like lenticular and fly-eye sheets. The parallax barrier assembly is made from purely mechanical components.Throughout the analysis, several new concepts are presented, which might require considerable effort from the reader to grasp. To make the process easier, the matter is unveiled gradually, step by step. Firstly, moir setups that exhibit floating planes are thoroughly analyzed. Then, the sculpting theory is introduced to generalize the floating planes scenario. To aid in comprehension, numerous figures and examples areutilized in the text to guide the reader.It's important to note that creating 3D moir pictures requires both theoretical knowledge and specific software and production processes, so readers looking to learn that skill may not find what they're looking for in this book. However, for those interested in exploring the topic on a theoretical level or writing software for 3D moir applications, this book is a valuable resource.The concluding chapters briefly discuss the relation of 3D moir setups with 3D lenticular and fly-eye pictures and the new concept of 3D moir optics.
The 3D Moiré Effect

The 3D Moiré Effect

Yitzhak Weissman

Pop3dart
2023
pokkari
The 3D moir effect creates an impressive 3D illusion that doesn't require any visual aids to observe. Although it has been known for a while, it has recently gained more attention due to advancements in printing technologies that allow for commercial and artistic exploration. Initially, it was used to produce images of floating planes. Gradually, it has been discovered that the surface can be sculpted into various forms, like a hemisphere, which has opened up new applications and increased interest in the effect. This book explains the theoretical foundations of the 3D moir effect and how to sculpt the display into different surface geometries. It provides numerical and analytical methods for the computation of the image-warping transformation involved in the sculpting process. The book is based on original and hitherto unpublished research. It explores two types of 3D moir assemblies: optical and parallax-barrier. The optical category offers superior imaging and visual qualities and involves optical micro-lens arrays like lenticular and fly-eye sheets. The parallax barrier assembly is made from purely mechanical components.Throughout the analysis, several new concepts are presented, which might require considerable effort from the reader to grasp. To make the process easier, the matter is unveiled gradually, step by step. Firstly, moir setups that exhibit floating planes are thoroughly analyzed. Then, the sculpting theory is introduced to generalize the floating planes scenario. To aid in comprehension, numerous figures and examples are utilized in the text to guide the reader.It's important to note that creating 3D moir pictures requires both theoretical knowledge and specific software and production processes, so readers looking to learn that skill may not find what they're looking for in this book. However, for those interested in exploring the topic on a theoretical level or writing software for 3D moir applications, this book is a valuable resource.The concluding chapters briefly discuss the relation of 3D moir setups with 3D lenticular and fly-eye pictures and the new concept of 3D moir optics.