Share

Fourier Multispectral Imaging

2017 Fourier transform spectroscopy
Download Fourier Multispectral Imaging PDF Online Free

Author :
Release : 2017
Genre : Fourier transform spectroscopy
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Fourier Multispectral Imaging by : Jie Jia

Download or read book Fourier Multispectral Imaging written by Jie Jia. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: There are many limitations to existing multispectral imaging modalities, such as speed, cost, range, spatial resolution, and application-specific system designs that lade generality. In this dissertation thesis, we propose a novel general-purpose multispectral imaging (MSI) modality. Central to this MSI design is a new type of spectral filters based not on the notion of narrowband filters, but instead using Fourier transform spectroscopy. Firstly, we verified the performance of our MSI system by simulation. Then, two initial prototypes based on this new idea are built and tested with real data capture. The results show that spectral features such as transmission and absorption peaks are preserved with this technique, proving that it is a more versatile technique compared to the narrowband filters for a wide range of multispectral imaging applications. We demonstrated single-shot multispectral imaging capability with a spectral filter array (SFA) pattern prototype designed to minimize the risk of spatial aliasing.

Fourier Multispectral Imaging in the Shortwave Infrared

2017 Infrared spectroscopy
Download Fourier Multispectral Imaging in the Shortwave Infrared PDF Online Free

Author :
Release : 2017
Genre : Infrared spectroscopy
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Fourier Multispectral Imaging in the Shortwave Infrared by : Matthew David Howard

Download or read book Fourier Multispectral Imaging in the Shortwave Infrared written by Matthew David Howard. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: Most multispectral systems try to measure incoming spectra with narrow-band filters at specific central wavelengths which are chosen based upon the application. A shortwave infrared (SWIR) multispectral system using concepts from Fourier multispectral imaging was designed with approximately sinusoidal spectral transmission filters. The filters were implemented as single cavity thin film resonators of varying thicknesses. The prototype system was evaluated using narrow-band spectra with single peaks, narrow-band spectra with multiple peaks, and broadband spectra with atmospheric absorption characteristics. The results show that this technique preserves spectral peaks and absorption bands even though the filters are not perfectly sinusoidal. Additionally, preliminary detection results were evaluated using a synthetic scene.

Fourier Analysis and Imaging

2012-12-06 Technology & Engineering
Download Fourier Analysis and Imaging PDF Online Free

Author :
Release : 2012-12-06
Genre : Technology & Engineering
Kind : eBook
Book Rating : 633/5 ( reviews)

GET EBOOK


Book Synopsis Fourier Analysis and Imaging by : Ronald Bracewell

Download or read book Fourier Analysis and Imaging written by Ronald Bracewell. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: As Lord Kelvin said, "Fourier's theorem is not only one of the most beautiful results of modern analysis, but it may be said to furnish an indispensable instrument in the treatment of nearly every recondite question in modern physics." This has remained durable knowledge for a century, and has extended its applicability to topics as diverse as medical imaging (CT scanning), the presentation of images on screens and their digital transmission, remote sensing, geophysical exploration, and many branches of engineering. Fourier Analysis and Imaging is based on years of teaching a course on the Fourier Transform at the senior or early graduate level, as well as on Prof. Bracewell's 1995 text Two-Dimensional Imaging. It is an excellent textbook and will also be a welcome addition to the reference library of those many professionals whose daily activities involve Fourier analysis in its many guises.

Multispectral and Hyperspectral Image Acquisition and Processing

2001 Computers
Download Multispectral and Hyperspectral Image Acquisition and Processing PDF Online Free

Author :
Release : 2001
Genre : Computers
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Multispectral and Hyperspectral Image Acquisition and Processing by : Qingxi Tong

Download or read book Multispectral and Hyperspectral Image Acquisition and Processing written by Qingxi Tong. This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt:

Fourier Methods in Imaging

2010-11-18 Technology & Engineering
Download Fourier Methods in Imaging PDF Online Free

Author :
Release : 2010-11-18
Genre : Technology & Engineering
Kind : eBook
Book Rating : 862/5 ( reviews)

GET EBOOK


Book Synopsis Fourier Methods in Imaging by : Roger L. Easton Jr.

Download or read book Fourier Methods in Imaging written by Roger L. Easton Jr.. This book was released on 2010-11-18. Available in PDF, EPUB and Kindle. Book excerpt: Fourier Methods in Imaging introduces the mathematical tools for modeling linear imaging systems to predict the action of the system or for solving for the input. The chapters are grouped into five sections, the first introduces the imaging “tasks” (direct, inverse, and system analysis), the basic concepts of linear algebra for vectors and functions, including complex-valued vectors, and inner products of vectors and functions. The second section defines "special" functions, mathematical operations, and transformations that are useful for describing imaging systems. Among these are the Fourier transforms of 1-D and 2-D function, and the Hankel and Radon transforms. This section also considers approximations of the Fourier transform. The third and fourth sections examine the discrete Fourier transform and the description of imaging systems as linear "filters", including the inverse, matched, Wiener and Wiener-Helstrom filters. The final section examines applications of linear system models to optical imaging systems, including holography. Provides a unified mathematical description of imaging systems. Develops a consistent mathematical formalism for characterizing imaging systems. Helps the reader develop an intuitive grasp of the most common mathematical methods, useful for describing the action of general linear systems on signals of one or more spatial dimensions. Offers parallel descriptions of continuous and discrete cases. Includes many graphical and pictorial examples to illustrate the concepts. This book helps students develop an understanding of mathematical tools for describing general one- and two-dimensional linear imaging systems, and will also serve as a reference for engineers and scientists

You may also like...