Method and apparatus for fingerprint identification and terminal device
Embodiments of the present application provide a method for fingerprint identification, which could reduce power consumption generated in the process of fingerprint identification. The method includes: capturing an optical signal, where the optical signal includes an optical signal, in an illumination region of a display screen, illuminating on a finger and reflected by the finger, the illuminating region is determined according to a pressing region within a fingerprint capturing region in which the finger performs a fingerprint pressing operation, and an area of the illuminating region is smaller than an area of the fingerprint capturing region; and performing fingerprint identification according to the optical signal.
1. A method for fingerprint identification, wherein the method comprises:
acquiring a fingerprint processing region, wherein the fingerprint processing region is determined according to a pressing region within a fingerprint capturing region in which a finger performs a fingerprint pressing operation, and an area of the fingerprint processing region is smaller than an area of the fingerprint capturing region;
selecting fingerprint data in the fingerprint processing region from fingerprint data carried by an optical signal captured in the fingerprint capturing region; and
performing fingerprint identification according to the fingerprint data in the fingerprint processing region.
2. The method according to claim 1 , wherein the fingerprint processing region is the pressing region.
3. The method according to claim 1 , wherein the fingerprint processing region is an elliptical region obtained by performing graphic fitting based on a center point of the pressing region, a long axis of the pressing region and a short axis of the pressing region.
4. The method according to claim 1 , wherein the fingerprint processing region is a circular region obtained by performing graphic fitting based on a center point of the pressing region and a long axis of the pressing region.
5. The method according to claim 1 , wherein the fingerprint capturing region comprises sensing regions of at least two fingerprint sensor chips.
6. An apparatus for fingerprint identification, comprising:
circuitry configured to acquire a fingerprint processing region, wherein the fingerprint processing region is determined according to a pressing region within a fingerprint capturing region in which a finger performs a fingerprint pressing operation, and an area of the fingerprint processing region is smaller than an area of the fingerprint capturing region;
a data processing circuitry configured to select fingerprint data in the fingerprint processing region from fingerprint data carried by an optical signal captured in the fingerprint capturing region; and
a fingerprint identification circuitry configured to perform fingerprint identification according to the fingerprint data in the fingerprint processing region.
7. The apparatus according to claim 6 , wherein the fingerprint processing region is the pressing region.
8. The apparatus according to claim 6 , wherein the fingerprint processing region is an elliptical region obtained by performing graphic fitting based on a center point of the pressing region, a long axis of the pressing region and a short axis of the pressing region.
9. The apparatus according to claim 6 , wherein the fingerprint processing region is a circular region obtained by performing graphic fitting based on a center point of the pressing region and a long axis of the pressing region.
10. The apparatus according to claim 6 , wherein the fingerprint capturing region comprises sensing regions of at least two fingerprint sensor chips.
11. A terminal device, comprising an apparatus for fingerprint identification, wherein the apparatus comprises:
circuitry configured to acquire a fingerprint processing region, wherein the fingerprint processing region is determined according to a pressing region within a fingerprint capturing region in which a finger performs a fingerprint pressing operation, and an area of the fingerprint processing region is smaller than an area of the fingerprint capturing region;
a data processing circuitry configured to select fingerprint data in the fingerprint processing region from fingerprint data carried by an optical signal captured in the fingerprint capturing region; and
a fingerprint identification circuitry configured to perform fingerprint identification according to the fingerprint data in the fingerprint processing region.
12. The terminal device according to claim 11 , wherein the fingerprint processing region is the pressing region.
13. The terminal device according to claim 11 , wherein the fingerprint processing region is an elliptical region obtained by performing graphic fitting based on a center point of the pressing region, a long axis of the pressing region and a short axis of the pressing region.
14. The terminal device according to claim 11 , wherein the fingerprint processing region is a circular region obtained by performing graphic fitting based on a center point of the pressing region and a long axis of the pressing region.
15. The terminal device according to claim 11 , wherein the terminal device further comprises an organic light-emitting diode (OLED) display screen, and a light-emitting layer of the display screen comprises a plurality of organic light-emitting diode light sources, wherein the terminal device employs an organic light-emitting diode light source located in an illuminating region as a light source for fingerprint identification.