Digital optical measurement : techniques and applications / Pramod Rastogi.

Format:

Book

Author/Creator:

Rastogi, Pramod K., 1951- author.

Contributor:

Rastogi, Pramod K., 1951- editor.

Series:

Artech House applied photonics series Digital optical measurement

Language:

English

Subjects (All):

Optical measurements.

Image processing--Digital techniques.

Image processing.

Physical Description:

1 online resource (473 p.)

Edition:

1st ed.

Place of Publication:

Boston, [Massachusetts] ; London, [England] : Artech House, 2015.

Language Note:

English

Summary:

This new resource explains the principles and applications of today's digital optical measurement techniques. From start to finish, each chapter provides a concise introduction to the concepts and principles of digital optical metrology, followed by a detailed presentation of their applications.

Contents:

Digital Optical Measurement Techniques and Applications ; Contents; Foreword; Preface; Chapter 1 Digital Image Processing; 1.1 Introduction; 1.2 Fourier Optical Analysis; 1.2.1 Frequency Domain Transfer Response; 1.2.2 Desirable Features in a Camera Transfer Function; 1.2.3 Sampling and Image Reconstruction; 1.3 Digital Restoration Filters; 1.3.1 Generation of Deconvolution Kernels; 1.3.2 Useful Window Functions; 1.3.3 Restoration Using Fast Fourier Transforms; 1.4 Local Area Contrast Enhancement; 1.4.1 Local Area Contrast Enhancement Algorithms for Thermal Imagers

1.4.2 Local Area Contrast Enhancement Algorithms for Reflective Imagers1.5 Conclusions; References; Chapter 2 Interferometric Testing of Optical Surfaces; 2.1 Fundamentals of Interferometry; 2.1.1 Interference Made Possible by the Wave Nature of Light; 2.1.2 Types of Interferometers for Surface Measurement; 2.2 Commercial Interferometers; 2.2.1 Overview of Commercially Available Interferometers; 2.2.2 Additional Features and Accessories; 2.2.3 Radius of Curvature Measurement ; 2.3 Practical Issues for Measuring Flats and Spheres with Commercial Interferometers

2.3.1 Set Up Hardware and Alignment 2.3.2 Software Setting ; 2.3.3 Calibration; 2.3.4 Processing Data ; 2.3.5 Estimation of Measurement Uncertainties ; 2.4 Measurement of Aspherics; 2.4.1 Definition and Types of Aspherics; 2.4.2 Configurations for Null Testing Aspheric Surfaces; 2.5 Measurements of Aspherics Using Computer Generated Holograms ; 2.5.1 Principles Behind CGH Interferometry; 2.5.2 CGH Design; 2.5.3 CGH Fabrication; 2.5.4 Alignment of CGH Test; 2.5.6 Error Analysis ; References; Chapter 3 Phase-Shifting Interferometry ; 3.1 The Interferometer Equation; 3.2 Three-Frame Method

3.3 Four-Frame Method3.4 Least-Squares Algorithms; 3.5 Carré's Algorithm; 3.6 Hariharan's Method ; 3.7 Design of Phase-Stepping Algorithms; 3.8 Phase Stepping Techniques and Applications ; 3.8.1 Mechanical Stepping; 3.8.2 Grating Methods; 3.8.3 Methods Based on Pancharatnam's Phase; 3.8.4 Spatial Methods ; References; Chapter 4 Systematic Approach to Digital Holographic Imaging and Its Applicationsin Interferometry ; 4.1 Introduction; 4.2 Recording of a Digital Hologram ; 4.3 Numerical Reconstruction in Digital Holography; 4.3.1 Reconstruction Based on Convolution Approach

4.3.2 Reconstruction Based on Fresnel Approximation 4.3.3 Numerical Reconstruction with Adjustable Magnification; 4.4 Suppression of DC Term ; 4.5 Reduction of Spatial Frequency Content Falling on CCD ; 4.5.1 Reduction of the Object Angle on the CCD Array by the Use of aDivergent Lens ; 4.5.2 Reduction of the Object Angle on the CCD by the Use of an Aperture ; 4.6 Digital Holographic Interferometry; 4.6.1 Deformation Measurement; 4.6.2 Study of Refractive Index Distribution ; 4.6.3 Vibration Measurement ; 4.6.4 Object Contouring; 4.7 Conclusions; References

Chapter 5 Digital Speckle Pattern Interferometry

Notes:

Description based upon print version of record.

Includes bibliographical references at the end of each chapters and index.

Description based on print version record.

ISBN:

1-5231-1708-7

1-60807-807-8