Electronic device unlocked and controlled by gesture recognition
There is provided an electronic device capable of improving the difficulty of breaking a digital electronic lock and the accuracy of gesture control. The electronic device is unlocked according to gestures of a single hand or two hands, an operation hand, a gesture position, a staying time of gesture and a gesture variation of a user. The electronic device further improves the accuracy of gesture control in conjunction with an accessory pattern, temperature sensing and space information of a wearable device. The present disclosure further provides an electronic device that identifies legitimacy of moving the electronic device according to a variation sequence of 3-axis accelerations of an accelerometer.
1 . An electronic device, comprising:
an image sensor, configured to output an image frame for detecting a human face image;
a gesture sensor, configured to generate a gesture detection signal; and
a processor, configured to
recognize whether any facial feature of a human face is covered by an object or not according to the human face image,
recognize a gesture combination according to the gesture detection signal after no facial feature of the human face is recognized being covered, and
unlock a digital electronic lock of the electronic device when the gesture combination is recognized matching a predetermined condition to replace unlocking the digital electronic lock by physiological characteristics,
wherein the gesture combination comprises a static two-hand gesture staying for a predetermined seconds to unlock the digital electronic lock.
2 . The electronic device as claimed in claim 1 , further comprising a thermal sensor configured to output a thermal image, wherein the processor is further configured to identify whether a temperature of the human face and a hand temperature match a predetermined temperature according to the thermal image.
3 . The electronic device as claimed in claim 1 , wherein the gesture sensor is the image sensor, a millimeter wave radar or a time-of-flight sensor.
4 . The electronic device as claimed in claim 1 , wherein the processor is further configured not to recognize the gesture combination when the facial feature of the human face is recognized being covered by the object.
5 . The electronic device as claimed in claim 1 , wherein the processor is further configured to send the human face image to a portable device for being confirmed by a user when the gesture combination is recognized not matching the predetermined condition.
6 . The electronic device as claimed in claim 1 , wherein
the gesture combination further comprises a combination of a static single hand gesture, an operation hand of the static single hand gesture, a gesture position of the static single hand gesture and a staying time of the static single hand gesture, and
the electronic device further comprises a display or is wirelessly coupled to a display, and the display is configured to show the gesture position and the staying time of gesture.
7 . The electronic device as claimed in claim 1 , wherein
the gesture combination further comprises a combination of a static single hand gesture, an operation hand of the static single hand gesture, operation hands of the static two-hand gesture, a gesture position of the static single hand gesture, and a staying time of the static single hand gesture, and
the electronic device further comprises a display or is wirelessly coupled to a display, and the display is configured to show the gesture position, the gesture positions, the staying times and the staying time of gesture.
8 . The electronic device as claimed in claim 1 , wherein the gesture combination further comprises a combination of a dynamic gesture variation, a position variation, a moving direction and a moving speed of a single hand.
9 . The electronic device as claimed in claim 1 , wherein
the gesture combination further comprises a predetermined pixel region of the image frame in which the static two-hand gesture staying for the predetermined seconds, and
the digital electronic lock is unlocked when the static two-hand gesture stays in the predetermined pixel region for the predetermined seconds.