Dr. Nathan Hagen
Assistant Professor at Utsunomiya Univ
SPIE Involvement:
Scholarship Committee | Senior status | Conference Program Committee | Author | Instructor
Area of Expertise:
optical design , polarimetry , imaging spectrometry , computational sensing , aberration theory , infrared imaging
Publications (30)

SPIE Journal Paper | November 10, 2018
OE Vol. 57 Issue 11
KEYWORDS: Absorption, Turbulence, Gases, Cameras, Long wavelength infrared, Clouds, Optical imaging, Infrared radiation, Optical filters, Signal to noise ratio

PROCEEDINGS ARTICLE | September 18, 2018
Proc. SPIE. 10765, Infrared Remote Sensing and Instrumentation XXVI
KEYWORDS: Long wavelength infrared, Thermography, Infrared imaging, Visible radiation, Scattering, Cameras, Infrared radiation

Proc. SPIE. 10711, Biomedical Imaging and Sensing Conference
KEYWORDS: Glucose, Polarization, Scattering, Polarimetry, Photoelastic modulators

Proc. SPIE. 10403, Infrared Remote Sensing and Instrumentation XXV
KEYWORDS: Thermography, Infrared sensors, Infrared imaging, Remote sensing, Infrared radiation, Infrared technology

Proc. SPIE. 10407, Polarization Science and Remote Sensing VIII
KEYWORDS: Optical design, Statistical analysis, Polarization, Imaging systems, Polarimetry

SPIE Journal Paper | November 12, 2015
NPh Vol. 2 Issue 04
KEYWORDS: Tomography, Hemodynamics, Optical tomography, Monte Carlo methods, Tissues, 3D image processing, Hyperspectral imaging, Sensors, Absorption, Reconstruction algorithms

Showing 5 of 30 publications
Conference Committee Involvement (2)
Optical Technology and Measurement for Industrial Applications Conference
24 April 2019 | Yokohama, Japan
Optomechatronic Actuators and Manipulation IV
17 November 2008 | San Diego, California, United States
Course Instructor
SC1212: Quantitative Imaging with Uncooled Infrared Cameras
Within the infrared community, it is widely held that uncooled sensors are incapable of doing accurate quantitative work. This course aims to show that quantitative imaging is actually possible with uncooled systems by demonstrating the steps to achieve radiometric calibration in detail and establishing the limits of what can be achieved. Throughout the course, the emphasis is on material that is practical for camera users, rather than for detector designers. The course material provides a thorough introduction into microbolometer pixel design and clarifies the differences between uncooled infrared sensors and photon-integrating sensors. Many of the examples provided are drawn from outdoor measurements, and the course provides a discussion of how to model atmospheric effects on infrared sensing in order to make sense of the thermal infrared world. Examples of quantitative measurements are drawn from the author’s work in infrared gas imaging, atmospheric sensing, and imaging of thermal dynamics.
SC1220: Imaging Spectrometry
This course covers the design and analysis of imaging spectrometers, from instrumentation to evaluation and data exploitation. After surveying the fundamentals of spectral imaging, the course provides a detailed survey of various implementations of imaging spectrometers and the benefits of each approach, with special attention to snapshot systems. Noise-equivalent spectral radiance (NESR) and other evaluation metrics are introduced and explained, providing a quantitative means of comparing systems. Finally, the course will review commonly used methods for data exploitation, surveys common algorithms used with spectral imaging data, and discusses their relative strengths and weaknesses.
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