1. EE3190 Optical Sensing and Imaging, Fall 2004 © Timothy J. Schulz EE3190 Optical Sensing and Imaging Introduction

2. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Introduction ``The study of imaging now embraces many major areas of modern technology, especially the several disciplines within electrical engineering, and will be both the stimulus for, and recipient of, new advances in information science, computer science, environmental science, device and materials science, and just plain high-speed computing. It can be confidently recommended as a fertile subject area for students entering upon a career in engineering.” - Ronald Bracewell

3. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Sensing and Imaging sens·ing –vt 1.To become aware of through the senses: PERCEIVE. 2.To grasp: comprehend. 3.To detect automatically im·ag·ing –vt 1.To make a likeness of. 2.To reflect. 3.To symbolize or typify. 4.To picture mentally: IMAGINE. 5.To describe, esp. to describe so vividly as to call up a mental picture of.

4. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 A Simple Model x y x0x0 y0y0 Consider an object that is placed somewhere in a two-dimensional rectangular region as shown above, with position described by ( x 0,y 0 ).

5. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 A Simple Model x y x0x0 y0y0 Suppose the position of the object is sensed with two sensors...

6. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 A Simple Model x y x0x0 y0y0 r1r1 r2r2 by measuring the distance from each sensor to the object.

7. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 The Forward Problem x y x0x0 y0y0 r1r1 r2r2 h

8. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 The Inverse Problem x y x0x0 y0y0 r1r1 r2r2 h

9. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Course Outline Fields The Propagation of Fields Lens-based Sensing and Imaging Lensless Sensing and Imaging Applications

10. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Fields longitude latitude Temperature, degrees Celsius

11. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Fields t s(t)s(t) 12 3 6 9 s(t)s(t) 12 o’clock 3 o’clock 6 o’clock 9 o’clock Monochromatic (sinusoidal) fields Spherical, parabolic, and planar fields

12. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Propagation of Fields

13. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Lens-based Sensing and Imaging

14. EE3190 Optical Sensing and Imaging© Timothy J. Schulz Electrical and Computer Engineering Fall 2004 Lensless Sensing and Imaging CAT MRIPETSAR