Introduction
This document provides simple guidelines to help set up and use facial authentication effectively and responsibly.What is Facial Authentication
Facial authentication, also known as facial verification, is a security measure that is used to confirm the identity of an individual. It involves comparing the facial features of an individual to a reference image, such as a passport or driver’s license photo. Facial authentication is commonly used in applications such as mobile phone unlocking, online banking, and secure access control systems. Facial authentication involves a one-to-one matching process with a smaller database of faces. However, it is affected by changes in appearance and aging, which can impact the accuracy of the technology. The accuracy of Facial authentication is affected by lighting, pose, and most importantly the quality of the reference image. A reference image is a person’s photo which is used to recognise the person.Facial Authentication Setup and Usage
In order to do successful Facial Authentication, there are two steps – Enrollment and Authentication. The enrollment process includes adding a person’s photo to Oloid Cloud Platform as a reference Image.Best Practices to be Followed
Below best practices should be followed to ensure an error-free enrollment and a smooth authentication experience thereafter.During Enrollment
- Face Positioning:
- Sit or stand upright facing the camera directly.
- Keep your head cantered and level, looking straight into the camera.
- Maintain a neutral facial expression with your eyes open and mouth closed.
- Ensure your entire face is visible, without tilting or turning your head.
- Lighting Conditions:
- Use soft, even lighting to minimize shadows on your face.
- Avoid harsh backlighting or bright light sources behind you.
- Prefer natural light or diffuse artificial light to illuminate your face uniformly.
- Ensure the lighting is sufficient so your facial features are clearly visible.
- Movement Requirements:
- Remain still and keep your face steady during the enrollment process.
- Do not move or look around during image capture to ensure clear data collection.
- Follow any prompts provided by the enrollment system for specific facial gestures, if applicable.
During Authentication
- Face Positioning:
- Position your face similarly to the enrollment process: cantered, facing directly into the camera.
- Keep your head steady and avoid tilting or turning.
- Ensure your entire face remains visible and unobstructed.
- Lighting Conditions:
- Maintain consistent lighting conditions similar to those during enrollment.
- Avoid sudden changes in lighting, such as moving to a different location or turning off lights.
- Ensure your face is well-lit and clearly visible.
- Movement Requirements:
- Keep your face still and avoid sudden movements.
- Follow any prompts to adjust your position or perform specific gestures (e.g., blinking, smiling), if required.
- Minimize talking or making facial expressions during the authentication process.
General Tips
- Remove accessories that may obscure your face, such as hats or sunglasses, unless required.
- Ensure the background is plain and uncluttered if possible.
- Follow any specific instructions provided by the facial recognition system to optimize accuracy.
Guidelines for Reference Image Quality
- The image should contain the full head and shoulders of the person.
- It should not be cropped to the face bounding box.
- Use an image of a face that occupies a large proportion of the image.
- Images with a face that occupies a larger portion of the image, are matched with greater accuracy.
- Use images that are bright and sharp.
- Use an image with a face that is within the recommended range of angles. The pitch should be less than 30 degrees face down and less than 45 degrees face up. The yaw should be less than 45 degrees in either direction. There is no restriction on the roll.
- Use an image of a face with both eyes open and visible.