UBIRIS.v1

UBIRIS.v1 database is composed of 1877 images collected from 241 persons during September, 2004 in two distinct sessions. Its most relevant characteristic is to incorporate images with several noise factors, simulating less constrained image acquisition environments. This enables the evaluation of the robustness of iris recognition methods. For the first image capture session, the enrollment one, we tried to minimize noise factors, specially those relative to reflections, luminosity and contrast, having installed image capture framework inside a dark room. In the second session we changed the capture place in order to introduce natural luminosity factor. This propitiates the appearance of heterogeneous images with respect to reflections, contrast, luminosity and focus problems. Images collected at this stage simulate the ones captured by a vision system without or with minimal active participation from the subjects, adding several noise problems. These images will be on the recognition stage compared to the ones collected during first session.

UBIRIS.v1数据库（UBIRIS.v1 database）由2004年9月采集自241名受试者的1877张图像组成，共分为两次独立的采集会话。该数据集最显著的特点是纳入了包含多种噪声因素的图像，以模拟约束度更低的图像采集环境，从而支持虹膜识别（iris recognition）方法的鲁棒性评估。首次图像采集会话为注册采集会话，本次采集过程中，为尽可能降低噪声影响——尤其是与反光、光照度和对比度相关的噪声——研究团队在暗室内搭建了图像采集装置。第二次采集会话变更了采集场地，引入自然光照条件，由此生成了存在反光、对比度失衡、光照异常以及对焦问题等各类异质图像。该阶段采集的图像模拟了受试者无主动配合或仅存在极低主动配合度的视觉系统采集场景，引入了多种噪声问题。在后续的识别阶段，这些第二阶段采集的图像将与首次会话采集的图像进行比对。

搜集汇总

背景与挑战

背景概述

UBIRIS.v1是一个虹膜图像数据集，包含1877张图像，采集自241人，分两个会话进行，旨在模拟真实环境中的噪声因素以评估虹膜识别方法的鲁棒性。第一会话在控制条件下采集图像以最小化噪声，而第二会话引入自然光照等噪声，模拟非受控采集场景，增强了数据集的实用性和挑战性。