Fingerprint entry prompting method and device
First Claim
1. A fingerprint entry prompting method, comprising:
- obtaining an ith entered fingerprint image, during a process of collecting and combining N fingerprint images entered in sequence to generate a fingerprint template of a user, wherein N≥
i≥
2, and N and i are integers;
obtaining an overlap region between the ith entered fingerprint image and a determined template image, wherein the determined template image is generated by combining i−
1 previously entered fingerprint images;
determining a relative direction from a second center to a first center, wherein the first center is a geometric center of the ith entered fingerprint image, and the second center is a geometric center of the overlap region in the ith entered fingerprint image;
presenting a prompting message when the overlap region satisfies a prompting condition, wherein the prompting message is configured to instruct the user to move a finger towards a specified direction and re-enter the ith fingerprint image, and wherein the prompting condition comprises that an area of the overlap region is outside of a specified area range,combining the ith entered fingerprint image and the i−
1 previously entered fingerprint images to generate a new determined template image, when the overlap region does not satisfy the prompting condition; and
wherein the relative direction is determined as the specified direction when the area of the overlap region is greater than a maximum value in the specified area range, and an opposite direction of the relative direction is determined as the specified direction when the area of the overlap region is smaller than a minimum value in the specified area range.
1 Assignment
0 Petitions
Accused Products
Abstract
A fingerprint entry prompting method, includes: obtaining an ith entered fingerprint image, during a process of collecting and combining N fingerprint images entered in sequence to generate a fingerprint template of a user, wherein N≥i≥2, and N and i are integers; obtaining an overlap region between the ith entered fingerprint image and a determined template image, wherein the determined template image is generated by combining i−1 previously entered fingerprint images; and presenting a prompting message when the overlap region satisfies a prompting condition, wherein the prompting message is configured to instruct the user to move a finger towards a specified direction and re-enter the ith fingerprint image.
12 Citations
11 Claims
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1. A fingerprint entry prompting method, comprising:
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obtaining an ith entered fingerprint image, during a process of collecting and combining N fingerprint images entered in sequence to generate a fingerprint template of a user, wherein N≥
i≥
2, and N and i are integers;obtaining an overlap region between the ith entered fingerprint image and a determined template image, wherein the determined template image is generated by combining i−
1 previously entered fingerprint images;determining a relative direction from a second center to a first center, wherein the first center is a geometric center of the ith entered fingerprint image, and the second center is a geometric center of the overlap region in the ith entered fingerprint image; presenting a prompting message when the overlap region satisfies a prompting condition, wherein the prompting message is configured to instruct the user to move a finger towards a specified direction and re-enter the ith fingerprint image, and wherein the prompting condition comprises that an area of the overlap region is outside of a specified area range, combining the ith entered fingerprint image and the i−
1 previously entered fingerprint images to generate a new determined template image, when the overlap region does not satisfy the prompting condition; andwherein the relative direction is determined as the specified direction when the area of the overlap region is greater than a maximum value in the specified area range, and an opposite direction of the relative direction is determined as the specified direction when the area of the overlap region is smaller than a minimum value in the specified area range. - View Dependent Claims (2, 3)
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4. A fingerprint entry prompting device, comprising:
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a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to; obtain an ith entered fingerprint image, during a process of collecting and combining N fingerprint images entered in sequence to generate a fingerprint template of a user, wherein N≥
i≥
2, and N and i are integers;obtain an overlap region between the ith entered fingerprint image and a determined template image, wherein the determined template image is generated by combining i−
1 previously entered fingerprint images;determine a relative direction from a second center to a first center, wherein the first center is a geometric center of the ith entered fingerprint image, and the second center is a geometric center of the overlap region in the ith entered fingerprint image; and present a prompting message when the overlap region satisfies a prompting condition, wherein the prompting message is configured to instruct the user to move a finger towards a specified direction and re-enter the ith fingerprint image, and wherein the prompting condition comprises that an area of the overlap region is outside a specified area range, wherein the relative direction is determined as the specified direction when the area of the overlap region is greater than a maximum value in the specified area range, and an opposite direction of the relative direction is determined as the specified direction when the area of the overlap region is smaller than a minimum value in the specified area range. - View Dependent Claims (5, 6, 7)
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8. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor in a device, cause the device to perform a fingerprint entry prompting method comprising:
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obtaining an ith entered fingerprint image, during a process of collecting and combining N fingerprint images entered in sequence to generate a fingerprint template of a user, wherein N≥
i≥
2, and N and i are integers;obtaining an overlap region between the ith entered fingerprint image and a determined template image, wherein the determined template image is generated by combining i−
1 previously entered fingerprint images;determining a relative direction from a second center to a first center, wherein the first center is a geometric center of the ith entered fingerprint image, and the second center is a geometric center of the overlap region in the ith entered fingerprint image; and presenting a prompting message when the overlap region satisfies a prompting condition, wherein the prompting message is configured to instruct the user to move a finger towards a specified direction and re-enter the ith fingerprint image, and wherein the prompting condition comprises that an area of the overlap region is outside a specified area range, wherein the relative direction is determined as the specified direction when the area of the overlap region is greater than a maximum value in the specified area range, and an opposite direction of the relative direction is determined as the specified direction when the area of the overlap region is smaller than a minimum value in the specified area range. - View Dependent Claims (9, 10, 11)
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Specification