Holoscopy [electronic resource] /
Hillmann, Dierck.author.
Holoscopy is a new tomographic imaging modality that combines techniques of digital holography with Fourier-domain optical coherence tomography (FD-OCT). Dierck Hillmann gives a theoretical introduction to the mathematics and physics of holoscopy and develops an efficient numerical reconstruction procedure. Compared to FD-OCT, holoscopy provides unique advantages by enabling tomographic imaging without a limited depth of focus, but results in an increased numerical cost for reconstruction. In further chapters, the author introduces techniques for FD-OCT that are relevant to holoscopy as well. He demonstrates and compares numerical reconstruction methods for FD-OCT and shows how motion and dispersion artifacts in FD-OCT can be numerically compensated. Contents Theoretical Introduction to Optical Coherence Tomography and Digital Holography FD-OCT Signal Processing Using the Non-Equispaced Fast Fourier Transform Motion and Dispersion Correction in FD-OCT Holoscopy Target Groups Academics and practitioners in the fields of computer science, optical coherence tomography, digital holography, and medical imaging. The Author Dierck Hillmann received his doctoral degree in the group of Gereon Hüttmann at the Institute of Biomedical Optics in Lübeck and is currently working for a leading company in the fields of science and photonics. The Editor The series Aktuelle Forschung Medizintechnik is edited by Thorsten M. Buzug.
""Preface by the series editor""; ""Foreword""; ""Contents""; ""List of figures""; ""List of tables""; ""Summary""; ""Zusammenfassung""; ""Symbols and notation""; ""Remarks on notation used throughout this thesis""; ""Symbols""; ""Abbreviations""; ""1 Introduction""; ""1.1 Optical imaging""; ""1.2 Optical coherence tomography""; ""1.2.1 Techniques""; ""1.2.2 Applications""; ""1.3 Advantages and limitations of optical coherence tomography""; ""1.4 New approaches""; ""1.5 Holoscopy""; ""1.6 Structure of the thesis""; ""2 Theory""; ""2.1 The Fourier transform""
""2.1.1 The Hilbert transform and analytic signals""""2.1.2 The discrete Fourier transform (DFT)""; ""2.1.3 Fourier transforms on non-equispaced nodes""; ""2.2 Sampling""; ""2.2.1 Discretized signals""; ""2.2.2 The sampling theorem""; ""2.3 Scalar waves""; ""2.3.1 Monochromatic waves""; ""2.3.2 Diffraction and propagation""; ""2.3.3 Broadband light""; ""2.3.4 Coherence""; ""2.4 Coherent imaging""; ""2.4.1 Image formation""; ""2.4.2 Quadratic phase factors""; ""2.4.3 Thin lenses""; ""2.4.4 The Fresnel approximation""; ""2.4.5 Lateral resolution""; ""2.5 Optical scattering theory""
""2.5.1 The Greenâ€?s function""""2.5.2 Born series""; ""2.5.3 The Ewaldâ€?s sphere""; ""2.6 Holography""; ""2.6.1 Classical holography""; ""2.6.2 Digital holography""; ""2.7 Optical coherence tomography (OCT)""; ""2.7.1 Time-domain optical coherence tomography (TD-OCT)""; ""2.7.2 Fourier-domain optical coherence tomography (FD-OCT)""; ""2.7.3 Direct and heterodyne detection""; ""2.7.4 Scanning OCT""; ""2.7.5 Full-field OCT""; ""3 FD-OCT signal processing using the non-equispaced fast Fourier transform""; ""3.1 The chirped FD-OCT signal""; ""3.2 Calibration""
""3.2.1 Calibration in presence of GVD mismatch""""3.3 Materials and methods""; ""3.3.1 The algorithms""; ""3.3.2 Simulation""; ""3.3.3 Measured data""; ""3.3.4 Signal processing""; ""3.4 Results and discussion""; ""3.4.1 Processing speed""; ""3.4.2 Image quality with simulated data""; ""3.4.3 Image quality with measured data""; ""4 Motion and dispersion correction in FD-OCT""; ""4.1 Introduction""; ""4.1.1 Doppler effect on axial motion in swept-source OCT""; ""4.1.2 Dispersion in FD-OCT""; ""4.2 Effect and correction of sample motion and GVD mismatch on the OCT signal""
""4.3 Determination of the correcting phase function""""4.3.1 Cross-correlation of sub-bandwidth reconstructions""; ""4.4 Materials and methods""; ""4.4.1 Implementation""; ""4.4.2 Full-field FD-OCT setup for axial motion experiments""; ""4.4.3 FD-OCT setup for GVD mismatch experiments""; ""4.5 Results and discussion""; ""4.5.1 Axial motion in full-field SS-OCT""; ""4.5.2 GVD mismatch in FD-OCT""; ""5 Holoscopy""; ""5.1 Sensitivity improvement of holoscopy""; ""5.2 Basic setup""; ""5.3 Theory of holoscopy""; ""5.3.1 The intensity distribution on the camera""
""5.3.2 The phase-corrected propagator, object and reference field""
"Research"--Cover.
Includes bibliographical references.
Holoscopy is a new tomographic imaging modality that combines techniques of digital holography with Fourier-domain optical coherence tomography (FD-OCT). Dierck Hillmann gives a theoretical introduction to the mathematics and physics of holoscopy and develops an efficient numerical reconstruction procedure. Compared to FD-OCT, holoscopy provides unique advantages by enabling tomographic imaging without a limited depth of focus, but results in an increased numerical cost for reconstruction. In further chapters, the author introduces techniques for FD-OCT that are relevant to holoscopy as well. He demonstrates and compares numerical reconstruction methods for FD-OCT and shows how motion and dispersion artifacts in FD-OCT can be numerically compensated. Contents Theoretical Introduction to Optical Coherence Tomography and Digital Holography FD-OCT Signal Processing Using the Non-Equispaced Fast Fourier Transform Motion and Dispersion Correction in FD-OCT Holoscopy Target Groups Academics and practitioners in the fields of computer science, optical coherence tomography, digital holography, and medical imaging. The Author Dierck Hillmann received his doctoral degree in the group of Gereon Hüttmann at the Institute of Biomedical Optics in Lübeck and is currently working for a leading company in the fields of science and photonics. The Editor The series Aktuelle Forschung Medizintechnik is edited by Thorsten M. Buzug.
Optical data processing.
Biomedical engineering.
Computer science.
Computer Imaging, Vision, Pattern Recognition and Graphics.
Biomedical Engineering and Bioengineering.
Computer Science, general.