FACE RECOGNITION TECHNOLOGY

           FACE RECOGNITION TECHNOLOGY                   

Face id is a revolution in mobile technology it change the way how we unlock our phone .

four method to unlock phone

1: password

2: pattern

3:face id

4:fingerprint scanner

But today we will talk about face unlock:

It scans for various facial features like distance between eyes,colour of retina,size if iris ,face contour ,facial hair density ,etc. all these are converted into a bitmap specification . This algorithm uses the saved bitmap specification with the one generated at runtime(i.e when you try to unlock a locked phone with your face) . 

THE TWO MAJOR FACE Recognition method

        

                              

                            SAMSUNG (IRIS SCANNING)

How does Samsung iris scanner work

   Samsung’s iris scanning technology works by identifying the patterns in your irises. Just like fingerprints, these are unique to each person, making them very difficult to replicate. To do this, Samsung’s latest flagships are equipped with an infrared diode that illuminates your eyes regardless of the surrounding lighting conditions. This light wavelength can’t be detected by a regular front facing cameras, so a special infrared narrow focus camera then captures the detailed iris information. This image is then stored and processed locally on device, nothing is send via the internet.

                                 iPHONE

How does iPhon Face ID work?

Apple's Face ID works in much the same way as fingerprint recognition: it compares two facial images and deducts how similar they are.

The technology behind uses a combo of light projectors and sensors to take pictures of your face — more specifically, facial features. To enable Face ID, Apple uses its TrueDepth camera system: the two technologies work together to create a detailed map of the user's face.

 

Here's what happens during facial recognition on iPhone X:

● The infrared images are transferred from the phone's camera to iPhone X's Neural Engine where a 3D map of the face is created.

● The created 3D map then goes through the processor's algorithms and is compared to the template that was stored in the phone's memory earlier.

● The computer then deducts whether the two images match (the deduction is based on the comparison score described above).

 

How accurate is facial recognition?

The accuracy of facial recognition depends on three main factors: lighting, pose and facial expression. If all of these conditions are favorable: good illumination, neutral expression, frontal pose — the accuracy of facial recognition can reach up to 99.9%.

-BY VIVEK