Fingerprint inputting method and related device

1. A fingerprint inputting method for an electronic device, comprising:

displaying a setting interface of fingerprint input on a display screen, wherein the setting interface of fingerprint input comprises a button of adding fingerprint function;

in response to detecting an instruction on the fingerprint adding function button, obtaining at least one screen image by the under-screen fingerprint module while a user finger is not pressing a fingerprint identification region, wherein fingerprint identification region comprises a predetermined region;

displaying a guiding interface of fingerprint input on the display screen and obtaining a plurality of fingerprint images while the user finger is pressing the fingerprint identification region by the under-screen fingerprint module; and

generating a fingerprint model according to the at least one screen image and the plurality of fingerprint images;

wherein the at least one screen image comprises only one screen image and the generating the fingerprint model according to the at least one screen image and the plurality of fingerprint images comprises:

determining a reference image for filtering out a non-fingerprint information of the predetermined region and the non-fingerprint information comprises at least one of a dirty stain and a foreign object;

obtaining a reference fingerprint image by filtering out a noise factor from each of the plurality of fingerprint images according to the reference image; and

generating the fingerprint model according to a fingerprint model algorithm and a plurality of the reference fingerprint images.

2. The method of claim 1 , wherein the generating the fingerprint model according to the fingerprint model algorithm and the plurality of the reference fingerprint images comprises:

obtaining a minutiae information from the plurality of reference fingerprint images;

obtaining standard minutiae data by processing the minutiae information by an algorithm of obtaining minutiae; and

generating the fingerprint model according to the standard minutiae data.

3. The method of claim 1 , wherein the generating the fingerprint model according to the fingerprint model algorithm and the plurality of the reference fingerprint images comprises:

dividing the plurality of reference fingerprint images into a plurality of image sets, each image set comprising a reference fingerprint image or at least two reference fingerprint images, wherein a similarity between the at least wo reference fingerprint images is greater than a first predetermined threshold, and a similarity between two reference fingerprint images in two image sets is smaller than a second predetermined threshold;

deleting at least one duplicated image from the plurality of image sets, each of the plurality of image sets only having one reference fingerprint image;

obtaining minutiae information from the reference fingerprint image retained in each of the plurality of image sets;

generating standard minutiae data according to the minutiae information corresponding to the plurality of image sets; and

generating the fingerprint model according to the standard minutiae data.

4. The method of claim 1 , wherein the obtaining the reference fingerprint image by filtering out the noise factor from each of the plurality of fingerprint images according to the reference image comprises:

performing an image characteristic comparison between the reference image and each of the fingerprint images, and determining a noise image characteristic and a background image characteristic; and

obtaining the reference fingerprint image by updating each of the fingerprint images according to the noise image characteristic and the background image characteristic.

5. The method of claim 4 , wherein the obtaining the plurality of fingerprint images while the user finger is pressing the fingerprint identification region by the under-screen fingerprint module comprises:

sequentially displaying, in the guiding interface of fingerprint input, a plurality of gesture guiding information in a predetermined guiding information set; and

during a process of displaying each of the gesture guiding information, obtaining at least one fingerprint image while the user finger is pressing the fingerprint identification region by the under-screen fingerprint module.

6. The method of claim 5 , wherein the guiding information set comprises predetermined posture informing information for informing a user to press the fingerprint identification region by different finger postures.

7. The method of claim 6 , further comprising:

determining a position of the noise factor according to the screen image and outputting a message of informing the user to clean the display screen; and

informing the user to input the fingerprint after confirming that there is no noise factor by repeatedly obtaining the screen image.

8. An electronic device comprising:

a display screen, configured to display a setting interface of fingerprint input comprising a button of adding fingerprint function and to display a guiding interface of fingerprint input;

an under-screen fingerprint module corresponding to a predetermined region of the display screen, configured to obtain at least one screen image while a user finger is not pressing a fingerprint identification region in response to detecting an instruction on the fingerprint adding function, and configured to obtain a plurality of fingerprint images while the user finger is pressing the fingerprint identification region, wherein the fingerprint identification region comprises the predetermined region;

a processor;

a memory, storing one or more programs executable by the processor to perform at least one operation comprising:

generating a fingerprint model according to the at least one screen image and the plurality of fingerprint images;

wherein the at least one screen image comprises only one screen image and the generating the fingerprint model comprises:

determining a reference image for filtering out a non-fingerprint information of the predetermined region and the non-fingerprint information comprises at least one of a dirty stain and a foreign object;

obtaining a reference fingerprint image by filtering out a noise factor from each of the plurality of fingerprint images according to the reference image; and

generating the fingerprint model according to a fingerprint model algorithm and a plurality of the reference fingerprint images.

9. The fingerprint inputting device of claim 8 , wherein the generating the fingerprint model according to the fingerprint model algorithm and the plurality of the reference fingerprint images comprises:

obtaining a minutiae information from the plurality of reference fingerprint images;

obtaining standard minutiae data by processing the minutiae information by an algorithm of obtaining minutiae; and

generating the fingerprint model according to the standard minutiae data.

10. The fingerprint inputting device of claim 8 , wherein the generating the fingerprint model according to the fingerprint model algorithm and the plurality of the reference fingerprint images comprises:

dividing the plurality of reference fingerprint images into a plurality of image sets, each image set comprising a reference fingerprint image or at least two reference fingerprint images, a similarity between the at least two reference fingerprint images is greater than a first predetermined threshold, a similarity between two reference fingerprint images in two image sets is smaller than a second predetermined threshold;

deleting at least one duplicated image from the plurality of image sets, each of the plurality of image sets only having one reference fingerprint image;

obtaining minutiae information from the reference fingerprint mage retained in each of the plurality of image sets;

generating standard minutiae data according to the minutiae information corresponding to the plurality of image sets; and

generating the fingerprint model according to the standard minutiae data.

11. The fingerprint inputting device of claim 8 , wherein the obtaining the reference fingerprint image by filtering out the noise factor from each of the plurality of fingerprint images according to the reference image comprises:

performing an image characteristic comparison between the reference image and each of the fingerprint images to determine a noise image characteristic and a background image characteristic; and

obtaining the reference fingerprint image by updating each of the fingerprint images according to the noise image characteristic and the background image characteristic.

12. The fingerprint inputting device of claim 11 , wherein the display screen is configured to sequentially display, in the guiding interface of fingerprint input, a plurality of gesture guiding information in a predetermined guiding information set; and

the under-screen fingerprint module is further configured to obtain the plurality of fingerprint images while the user finger is pressing the fingerprint identification region in response to each of the gesture guiding information.

13. The fingerprint inputting device of claim 12 , wherein the guiding information set comprises predetermined posture informing information for informing a user to press the fingerprint identification region by different finger postures.

14. The fingerprint inputting device of claim 13 , wherein the display screen is configured to display a message of informing the user to clean the display screen in response to determining a position of the noise factor according to the screen image, and is configured to inform the user to input the fingerprint after confirming that there is no noise factor by repeatedly obtaining the screen image.

15. A non-transitory computer-readable storage medium storing computer procedures for electronic data interchange, wherein the computer procedures are executable by a computer to perform at least one operation comprising:

generating a fingerprint model according to at least one screen image and a plurality of fingerprint images;

wherein the at least one screen image is obtained by an under-screen fingerprint module while a user finger is not pressing a fingerprint identification region in response to detecting an instruction on a button of adding fingerprint function that is displayed on a display screen of the computer;

wherein a plurality of fingerprint images are obtained by the under-screen fingerprint module while the user finger is pressing a fingerprint identification region of the display screen;

wherein the fingerprint identification region corresponds to the under-screen fingerprint module; and

wherein the computer procedures are executable by the computer to perform:

generating a reference image for filtering out a noise factor according to the at least one screen image, wherein the noise factor comprises a non-fingerprint information of the predetermined region and the non-fingerprint information comprises at least one of a dirty stain and a foreign object;

obtaining a reference fingerprint image by filtering out a noise factor from each of the plurality of fingerprint images according to the reference image; and

generating the fingerprint model according to a fingerprint model algorithm and a plurality of the reference fingerprint images.