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Biometric Enrolment Manual
descriptionOverview descriptionFacial image capture descriptionFingerprints Capture descriptionIris Capture
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Iris Capture

The iris is a coloured and most visible part of human eye which surrounds the pupil. The iris controls the amount of light that enters into the eye. It is the ring-shaped region of the eye, bounded by the pupil and sclera on either side. 

The iris has a distinct structure that forms a pattern which can be photographed. The patterns form randomly and are highly complex. The salient features of iris recognition and pattern matching are as follows:

Iris Capturing Device

Iris Capturing Device is a biometric device.  Double Iris Capturing Device can capture both the eyes at a time. Based on make and model, these devices can be hand-held or tripod-held.

Steps to Capture Image of Iris

To capture iris biometric using Iris Capturing Device perform the following steps:

  1. Checking the existence of Enrollee’s eyes: If capturing the iris image is not possible due to non-existence of one or both the eyes or bandage across one or both the eyes/any other deformity or disease, the same has to be recorded in the Enrolment Client application software.
  2. Checking the Enrollee’s position: Request the Enrollee to sit in a fixed position. The posture should be like taking a portrait photograph.
  3. Aiming the Iris Capturing Device: Aim the Iris Capturing Device towards the eye of the Enrollee. The device should be held steady. In case, if the device is required to be held by the resident, the Enrolment Operator may help the Enrollee to hold the device steady.
  4. Checking the light in the room: The iris capture process is sensitive to lighting condition present in the room. Make sure that no direct or artificial light directly reflects off theEnrollee’s eyes. Light source used for facial image capture should be switched off during the iris capture.
  5. Checking the image quality: After capturing the iris image, the Enrolment Client application software is able to measure the iris image quality. An initial image quality assessment would be done to provide feedback to the Operator during the capture process. The device alerts the Operator if the captured iris image is of poor quality. If the captured iris image is of poor quality then try again to capture a good quality image.