- Illumination Normalization. Encyclopedia of Biometrics 2009: 722
- Image Acquisition. Encyclopedia of Biometrics 2009: 722
- Image Capture. Encyclopedia of Biometrics 2009: 722
- Image Classification. Encyclopedia of Biometrics 2009: 722
- Image Enhancement. Encyclopedia of Biometrics 2009: 722
- Image Formation Process. Encyclopedia of Biometrics 2009: 725
- Image Morphology. Encyclopedia of Biometrics 2009: 725
- Image Pattern Classification. Encyclopedia of Biometrics 2009: 725
- Image Recognition. Encyclopedia of Biometrics 2009: 729
- Image Regeneration from Templates. Encyclopedia of Biometrics 2009: 729
- Image Resolution. Encyclopedia of Biometrics 2009: 729
- Image Segmentation. Encyclopedia of Biometrics 2009: 729-730
- Image Warping. Encyclopedia of Biometrics 2009: 730
- Imaging Spectroscopy. Encyclopedia of Biometrics 2009: 730
- Imaging Volume. Encyclopedia of Biometrics 2009: 730
- Implementation Under Test (IUT). Encyclopedia of Biometrics 2009: 730
- Imposter Distribution. Encyclopedia of Biometrics 2009: 730
- Impostor. Encyclopedia of Biometrics 2009: 730
- Impostor Match. Encyclopedia of Biometrics 2009: 730
- Imprecise Localization. Encyclopedia of Biometrics 2009: 731
- Independent Factor Analysis. Encyclopedia of Biometrics 2009: 741
- Indexing. Encyclopedia of Biometrics 2009: 741
- Individuality of Biometric Traits. Encyclopedia of Biometrics 2009: 741
- Individualization. Encyclopedia of Biometrics 2009: 751
- Influencing Factors. Encyclopedia of Biometrics 2009: 751
- Information Content of Iris Images. Encyclopedia of Biometrics 2009: 753
- Information Fusion. Encyclopedia of Biometrics 2009: 753
- Intelligent Agents. Encyclopedia of Biometrics 2009: 753
- Interaction. Encyclopedia of Biometrics 2009: 753-754
- Interactive Voice Response (IVR). Encyclopedia of Biometrics 2009: 754