Page 10 - Introduction to Information Optics

Contents IX

7.2.2. Nonzero-order Joint-Transform Detection 368
7.2.3. Position-Encoding Joint-Transform Detection 370
7.2.4. Phase-Representation Joint-Transform Detection 371
7.2.5. Iterative Joint-Transform Detection 372
7.3. Polychromatic Pattern Recognition 375
7.3.1. Detection with Temporal Fourier-Domain Filters 376
7.3.2. Detection with Spatial-Domain Filters 377
7.4. Target Tracking 380
7.4.1. Autonomous Tracking 380
7.4.2. Data Association Tracking 382
7.5. Pattern Recognition Using Composite Filtering 387
7.5.1. Performance Capacity 388
7.5.2. Quantization Performance 390
7.6. Pattern Classification 394
7.6.1. Nearest Neighbor Classifiers 395
7.6.2. Optical Implementation 398
7.7. Pattern Recognition with Photorefractive Optics 401
7.7.1. Detection by Phase Conjugation 401
7.7.2. Wavelength-Multiplexed Matched Filtering 404
7.7.3. Wavelet Matched Filtering 407
7.8. Neural Pattern Recognition 411
7.8.1. Recognition by Supervised Learning 412
7.8.2. Recognition by Unsupervised Learning 414
7.8.3. Polychromatic Neural Networks 418
References 422
Exercises 423

Chapter 8 Information Storage with Optics 435
8.1. Digital Information Storage 435
8.2. Upper Limit of Optical Storage Density 436
8.3 Optical Storage Media 438
8.3.J. Photographic Film 438
8.3.2. Dichromated Gelatin 439
8.3.3. Photopolymers 439
8.3.4. Photoresists 440
8.3.5. Thermoplastic Film 440
8.3.6. Photorefractive Materials 441
8.3.7. Photochromic Materials 442
8.3.8. Electron-Trapping Materials 442
8.3.9. Two Photon-Absorption Materials 443
8.3.10. Bacteriorhodospin 444
8.3.11. Photochemical Hole Burning 444
8.3.12. Magneto-optic Materials 445
8.3.13. Phase-Change Materials 446
8.4. Bit-Pattern Optical Storage 446
8.4.1. Optical Tape 447
8.4.2. Optical Disk 447
8.4.3. Multilayer Optical Disk 448
8.4.4. Photon-Gating 3-D Optical Storage 449