Face Recognition (KOI v1.9.5)
Face Recognition is the technology of recognizing individuals from an image. This function can be realized on KOI.
Load KOI Extension: https://github.com/KittenBot/pxt-koi
Blocks for Face Recognition:
Wifi connection is required for Face Recognition. Face Recognition is a free feature, therefore you must choose a unique name for your class. For example, common names like testing, test1, class01 are already made by others. A maximum of 20 images can be stored in each class.
1: Download the program to Micro:bit.
2: Press A to store a face to the class.
3: After a shortwhile, KOI will display the gender and the age of the face detected.
You can change the name and reupload the program to store another face.
6: Press B to recognize a face
7: KOI will display the name of this face and its confidence. If a new face is detected, KOI will display “stranger”.
Confidence level can range from 0 to 100.
Face Recognition Demo Video
Extension Version and Updates
There may be updates to extensions periodically, please refer to the following link to update/downgrade your extension.
2: Does KOI work with 3V input?
· A: No, KOI only works with 5V.
3: KOI shows “Pic not has face” after taking a picture.
· A: This is normal because the focus may be off, try taking the picture again.
3: KOI shows “Get timeout” after taking a picture.
· A: This is because network conditions may not be good enough, or sometimes the server may be too busy.