Fingerprint recognition method and electronic device

1. A fingerprint recognition method, used for an electronic device having a fingerprint recognition sensor, the method comprising:

collecting, by the electronic device, a touch image in a fingerprint collection region of the fingerprint recognition sensor;

determining, by the electronic device, whether the touch image is consistent with a pre-stored fingerprint sample;

executing, by the electronic device, a first preset action corresponding to the pre-stored fingerprint sample when the touch image is consistent with the pre-stored fingerprint sample;

determining, by the electronic device, whether the touch image meets a preset condition when the touch image is inconsistent with the pre-stored fingerprint sample, the preset condition being that a coverage area of the touch image is greater than or equal to a first preset value and image quality of the touch image is greater than or equal to a second preset value, and the coverage area being an area covered by the touch image in the fingerprint collection region;

executing, by the electronic device, a second preset action when the touch image meets the preset condition, the second preset action being used to indicate that the touch image is inconsistent with the pre-stored fingerprint sample; and

executing, by the electronic device, no action when the touch image does not meet the preset condition.

2. The method of claim 1 , wherein before determining whether the touch image meets the preset condition, the method further comprises:

determining a target touch image set, the target touch image set comprising multiple pre-stored target touch images that are consistent with the pre-stored fingerprint sample;

determining coverage areas and image quality of all the target touch images in the target touch image set;

determining the first preset value according to the coverage areas of the target touch images in the target touch image set; and

determining the second preset value according to the image quality of all the target touch images in the target touch image set.

3. The method of claim 1 , wherein before determining whether the touch image is consistent with the pre-stored fingerprint sample, the method further comprises configuring a correspondence list, the correspondence list comprising one fingerprint sample, correspondences between different fingerprint samples and different first preset actions, and a correspondence between the fingerprint sample and the first preset action, or at least two fingerprint samples.

4. The method of claim 1 , wherein the first preset action is one or more of the following: unlocking, running an application program, paying, or dialing a phone number.

5. The method of claim 1 , wherein after executing the second preset action, the method further comprises locking the electronic device within a preset time when a quantity of times of continuously executing the second preset action is greater than or equal to a third preset value.

6. The method of claim 1 , wherein the second preset action is one or more of vibration or making an alert sound.

7. An electronic device, comprising:

a fingerprint recognition sensor having a fingerprint collection region;

a memory storing executable instructions; and

a processor coupled to the fingerprint recognition sensor and the memory and configured to:

collect a touch image in the fingerprint collection region of the fingerprint recognition sensor;

determine whether the touch image is consistent with a pre-stored fingerprint sample;

execute a first preset action corresponding to the pre-stored fingerprint sample when the touch image is consistent with the pre-stored fingerprint sample;

determine whether the touch image meets a preset condition when the touch image is inconsistent with the pre-stored fingerprint sample, the preset condition being that a coverage area of the touch image is greater than or equal to a first preset value and image quality of the touch image is greater than or equal to a second preset value, and the coverage area being an area covered by the touch image in the fingerprint collection region;

execute a second preset action when the touch image meets the preset condition, the second preset action being used to indicate that the touch image is inconsistent with the pre-stored fingerprint sample; and

execute no action when the touch image does not meet the preset condition.

8. The electronic device of claim 7 , wherein the processor is further configured to:

determine a target touch image set, the target touch image set comprising multiple pre-stored target touch images that are consistent with the pre-stored fingerprint sample;

determine coverage areas and image quality of all the target touch images in the target touch image set;

determine the first preset value according to the coverage areas of all the target touch images in the target touch image set; and

determine the second preset value according to the image quality of all the target touch images in the target touch image set.

9. The electronic device of claim 7 , wherein the processor is further configured to configure a correspondence list, the correspondence list comprising one fingerprint sample, correspondences between different fingerprint samples and different first preset actions, and a correspondence between the fingerprint sample and the first preset action, or at least two fingerprint samples.

10. The electronic device of claim 7 , wherein the first preset action is one or more of the following: unlocking, running an application program, paying, or dialing a phone number.

11. The electronic device of claim 7 , wherein the processor is further configured to lock the electronic device within a preset time when a quantity of times of continuously executing the second preset action is greater than or equal to a third preset value.

12. The electronic device of claim 7 , wherein the second preset action is one or more of vibration or making an alert sound.