Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Iris recognition"”.
-
Feature extraction using two dimensional (2D) legendre wavelet filter for partial iris recognition
An increasing need for biometrics recognition systems has grown substantially to address the issues of recognition and identification, especially in highly dense areas such as airports, train stations, and financial transactions. Evidence of these can be seen in some airports and also the …
-
Segmentation and Feature Extraction Methods for Ocular Modalities
… has gained higher demand based on their proven recognition rates and reliable texture patterns over time. Physical and psycho-physiological aspects of human eye reveal unique signatures from physical appearance and cognitive state. Physical aspects of human eye include unique texture pattern …
-
Ocular Biometrics: Human Recognition in Challenging Conditions
The iris is the most reliable human biometric known to date. The iris texture has been shown to be effectively unique under ideal imaging conditions. However, as imaging constraints are relaxed, the iris becomes increasingly difficult to image, dra- matically decreasing its usability as an accurate …
-
Performance analysis of iris based recognition system at the matching score level
Over the past three years, iris based personal identification has gained considerable attention both from research groups and government organizations. Public acceptance of this biometric grew substantially too. Modern cameras used for iris acquisition are less intrusive compared to earlier iris …
-
Investigation on advanced image search techniques
… image enhancement and segmentation methods for iris recognition. First, several new color descriptors have been developed for color image search. Specifically, a new oRGB-SIFT descriptor, which integrates the oRGB color space and the Scale-Invariant Feature Transform (SIFT), is proposed for …
-
Techniques for Ocular Biometric Recognition Under Non-ideal Conditions
… traction due to recent advances in automated iris recognition. However, a multitude of factors can negatively impact ocular recognition performance under unconstrained conditions (e.g., non-uniform illumination, occlusions, motion blur, image resolution, etc.). This dissertation develops …
-
Biometric Leakage from Generative Models and Adversarial Iris Swapping for Spoofing Eye-based Authentication
… data and explores digital spoofing attacks on iris-based authentication systems representative of AR/VR environments. We first explore how diffusion models trained on biometric data can memorize and leak iris images. Next, we evaluate the effectiveness of Cross-Attention GANs for iris-swapping …
-
Username and password verification through keystroke dynamics
… biometric systems such as fingerprint, face, and iris recognition are not readily deployable in remote authentication schemes. Keystroke dynamics provide the ability to combine the ease of use of username/password schemes with the increased trustworthiness associated with biometrics. Our research …
-
Analysis and synthesis of iris images
… body that help in personal identification, the iris is probably the most robust and accurate. Although numerous iris recognition algorithms have been proposed, the underlying processes that define the texture of irises have not been extensively studied. In this thesis, multiple pair-wise pixel …
-
Iris categorization using texton representation and symbolic features
… increasingly commonly used characteristic is the iris section of the eye, which is valued for its uniqueness among individuals and stability over time. One key concern with iris recognition systems is the time required to find a test sample's match in a database of subjects. This work considers …
-
An Investigation into the Performance of Ethnicity Verification Between Humans and Machine Learning Algorithms
… of ethnicity-specific information such as face recognition and iris recognition, and the availability of image datasets for more commonly available human populations, i.e. Caucasian, African-American, Asians, and South-Asian Indians. A gap has been identified for the development of a system …
-
An Investigation into the Performance of Ethnicity Verification Between Humans and Machine Learning Algorithms
… of ethnicity-specific information such as face recognition and iris recognition, and the availability of image datasets for more commonly available human populations, i.e. Caucasian, African-American, Asians, and South-Asian Indians. A gap has been identified for the development of a system …
-
A Hybrid Multibiometric System for Personal Identification Based on Face and Iris Traits. The Development of an automated computer system for the identification of humans by integrating facial and iris features using Localization, Feature Extraction, Handcrafted and Deep learning Techniques
… of both the face and the left and right irises, in a unified hybrid multimodal biometric identification system using different fusion approaches at the score and rank level. Firstly, the facial features are extracted using a novel multimodal local feature extraction approach, termed as …
-
A Hybrid Multibiometric System for Personal Identification Based on Face and Iris Traits. The Development of an automated computer system for the identification of humans by integrating facial and iris features using Localization, Feature Extraction, Handcrafted and Deep learning Techniques.
… of both the face and the left and right irises, in a unified hybrid multimodal biometric identification system using different fusion approaches at the score and rank level. Firstly, the facial features are extracted using a novel multimodal local feature extraction approach, termed as …
-
Identifikace osob pomocí obrazu duhovky
Cieľom tejto bakalárskej práce bolo vytvoriť systém pre identifikáciu osôb pomocou obrazu dúhovky. V práci sú popísané už existujúce metódy a postupy rozpoznávania osôb pomocou dúhovky. Mnou navrhnutá metóda využíva konvolučnú neurónovú sieť natrénovanú za účelom extrakcie príznakov. Tie následne …
-
Avances en el estudio, diseño y evaluación de sistemas interactivos multimodales en escenarios de seguridad biométrica
… una nueva modalidad, el reconocimiento de iris. En este estudio se profundiza en aspectos interactivos tales como la influencia de la falta de eficacia en la identificación o de los fallos en la captura de los rasgos biométricos sobre la percepción del sistema por parte del usuario. En este …