WO2017128767A1 - 指纹模板录入方法及装置 - Google Patents
指纹模板录入方法及装置 Download PDFInfo
- Publication number
- WO2017128767A1 WO2017128767A1 PCT/CN2016/101865 CN2016101865W WO2017128767A1 WO 2017128767 A1 WO2017128767 A1 WO 2017128767A1 CN 2016101865 W CN2016101865 W CN 2016101865W WO 2017128767 A1 WO2017128767 A1 WO 2017128767A1
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- WIPO (PCT)
- Prior art keywords
- fingerprint
- fingerprint template
- candidate
- template
- threshold
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/50—Maintenance of biometric data or enrolment thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1335—Combining adjacent partial images (e.g. slices) to create a composite input or reference pattern; Tracking a sweeping finger movement
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/60—Static or dynamic means for assisting the user to position a body part for biometric acquisition
- G06V40/67—Static or dynamic means for assisting the user to position a body part for biometric acquisition by interactive indications to the user
Definitions
- the embodiments of the present disclosure relate to the field of fingerprint recognition, and in particular, to a fingerprint template input method and apparatus.
- Fingerprint recognition technology has been widely used in mobile terminals such as smart phones and tablets.
- the fingerprint identification technology consists of two parts: the fingerprint template entry process and the fingerprint recognition process.
- the fingerprint template input process means that the fingerprint algorithm saves the fingerprint image synthetic fingerprint template entered into the fingerprint template database by the user. Due to multiple factors such as user operation habits and sensitivity of fingerprint recognition sensor, the fingerprint image entered by the user cannot fully reflect the fingerprint information of the user. In the related art, the user is required to repeatedly input a fixed number of fingerprint images, which will be repeated multiple times. The entered fingerprint images are spliced to form a fingerprint template. Since the fixed number entry method improves the quality of the fingerprint template by repeatedly recording the fingerprint image of the same area, the prescribed fixed entry count is much larger than the actually required number of entries.
- the method and device for inputting a fingerprint template are provided in the embodiment of the present disclosure.
- the embodiment of the present disclosure provides a method and a device for inputting a fingerprint template. The technical solution is as follows:
- a fingerprint template entry method comprising:
- the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold and the number of feature points in the candidate fingerprint template is greater than a second threshold, and the coverage area is coverage of the user fingerprint. area;
- the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint.
- the predetermined condition includes that a coverage area of the candidate fingerprint template is greater than a first threshold
- the method further includes:
- the first prompt information is displayed, where the first prompt information is used to prompt the user that the fingerprint is not covered by the candidate fingerprint template;
- the predetermined condition includes that the number of feature points in the candidate fingerprint template is greater than a second threshold
- the method further includes:
- the second prompt information is displayed, where the second prompt information is used to indicate that the number of feature points in the candidate fingerprint template is smaller than a third threshold, and the second threshold is greater than the second threshold.
- the second prompt information is displayed, including:
- the second prompt information is displayed.
- the method further includes:
- the third prompt information is displayed, and the third prompt information is used to prompt the user that the fingerprint is not covered by the candidate fingerprint template.
- the method further includes:
- the prompt information of the fingerprint template input failure is displayed.
- a fingerprint template entry device comprising:
- the fingerprint acquiring module is configured to acquire an ith fingerprint image collected by the fingerprint recognition sensor, where i is a positive integer;
- a template candidate module configured to obtain a candidate fingerprint template according to all the obtained i fingerprint images
- the template detection module is configured to detect whether the candidate fingerprint template satisfies a predetermined condition, where the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold and the number of feature points in the candidate fingerprint template is greater than the second threshold, and the coverage is The area is the coverage area of the user's fingerprint;
- the template entry module is configured to record the candidate fingerprint template as a fingerprint template of the user fingerprint when the candidate fingerprint template satisfies a predetermined condition.
- the predetermined condition includes that a coverage area of the candidate fingerprint template is greater than a first threshold
- the device also includes:
- the first display module is configured to display the first prompt information when the coverage area of the candidate fingerprint template is smaller than the first threshold, where the first prompt information is used to prompt the user that the fingerprint has not been selected by the candidate fingerprint The area covered by the board;
- the predetermined condition includes that the number of feature points in the candidate fingerprint template is greater than a second threshold
- the device also includes:
- the second display module is configured to display the second prompt information when the number of the feature points in the candidate fingerprint template is less than the second threshold, and the second prompt information is used to prompt the number of feature points in the candidate fingerprint template to be less than the third threshold Area, the second threshold is greater than the third threshold;
- the second display module includes:
- a first detecting submodule configured to detect whether the candidate fingerprint template completely covers the user fingerprint
- the first prompt sub-module is configured to display the second prompt information when the candidate fingerprint template completely covers the user fingerprint.
- the device further includes:
- the third display module is configured to display the third prompt information when the candidate fingerprint template has not completely covered the user fingerprint, and the third prompt information is used to prompt the user that the fingerprint is not covered by the candidate fingerprint template.
- the device further includes:
- the number detection module is configured to detect whether the number of times the fingerprint recognition sensor collects the fingerprint image reaches a predetermined number of times;
- the failure display module is configured to display the prompt information of the failure of the fingerprint template input when the number of times the fingerprint recognition sensor acquires the fingerprint image reaches a predetermined number of times.
- a fingerprint template entry device comprising:
- a memory configured to store processor executable instructions
- processor is configured to:
- the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold and the number of feature points in the candidate fingerprint template is greater than a second threshold, and the coverage area is coverage of the user fingerprint. area;
- the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint.
- i is a positive integer; obtaining a candidate fingerprint template according to all the obtained i-fingerprint images; detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition
- the candidate fingerprint template is entered as a fingerprint template of the user's fingerprint; the method for improving the quality of the fingerprint template by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods is solved, and the predetermined fixed entry count is much larger than the actual required number of entries.
- the problem is that when the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as the fingerprint template of the user fingerprint, which reduces the number of times the fingerprint image is entered, and improves the efficiency of fingerprint template input.
- FIG. 1 is a hardware structural diagram of a mobile terminal according to some exemplary embodiments
- FIG. 2 is a flowchart of a fingerprint template entry method according to an exemplary embodiment
- FIG. 3A is a flowchart of a fingerprint template entry method according to another exemplary embodiment
- FIG. 3B is a schematic diagram showing displaying first prompt information according to an exemplary embodiment
- FIG. 3C is a schematic diagram showing displaying second prompt information according to an exemplary embodiment
- FIG. 3D is a schematic diagram showing display entry failure information according to an exemplary embodiment
- FIG. 4A is a flowchart of a fingerprint template entry method according to another exemplary embodiment
- FIG. 4B is a schematic diagram showing displaying third prompt information according to an exemplary embodiment
- FIG. 5 is a block diagram of a fingerprint template entry device according to an exemplary embodiment
- FIG. 6 is a block diagram of a fingerprint template entry device according to another exemplary embodiment
- FIG. 7 is a block diagram of still another fingerprint template entry device according to an exemplary embodiment.
- FIG. 1 is a hardware structural diagram of a mobile terminal according to an exemplary embodiment.
- the mobile terminal may be a terminal such as a smart phone, a tablet, an e-book reader.
- the mobile terminal includes a processor 120, a memory 140 coupled to the processor 120, and a fingerprint recognition sensor 160. among them:
- Executable instructions of the processor 120 are stored in the memory 140.
- the memory 140 stores an instruction of a fingerprint algorithm.
- the fingerprint recognition sensor 160 is also referred to as a fingerprint recognition module.
- the fingerprint recognition sensor 160 is configured to Capture the fingerprint image of the user.
- the processor 120 obtains a fingerprint template of the user fingerprint according to the fingerprint algorithm stored by the memory 140 and the fingerprint image of the user collected by the fingerprint recognition sensor 160, and records the obtained fingerprint template into the fingerprint recognition sensor 160.
- the functions of screen unlocking and mobile payment of the mobile terminal are realized.
- FIG. 2 is a flowchart of a fingerprint template input method according to an exemplary embodiment. As shown in FIG. 2, the fingerprint template input method is applied to the mobile terminal shown in FIG. 1, and includes the following steps.
- step 201 an ith fingerprint image acquired by the fingerprint recognition sensor is acquired, where i is a positive integer.
- a candidate fingerprint template is obtained according to all the i fingerprint images that have been acquired.
- step 203 it is detected whether the candidate fingerprint template satisfies a predetermined condition.
- the predetermined condition includes at least one of a coverage area of the candidate fingerprint template being greater than the first threshold and a number of feature points in the candidate fingerprint template being greater than a second threshold, the coverage area being a coverage area of the user fingerprint.
- step 204 if the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint.
- the fingerprint template input method obtains the ith fingerprint image collected by the fingerprint recognition sensor, i is a positive integer; and obtains the candidate fingerprint template according to all the obtained i fingerprint images. And detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint; and the fingerprint template is improved by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods The quality of the specified number of fixed entries is far greater than the number of times the number of entries is actually required; when the candidate fingerprint template meets the predetermined conditions, the candidate fingerprint template is entered as the fingerprint template of the user's fingerprint, reducing the number of times the fingerprint image is entered. , improved fingerprint template recording The effect of efficiency.
- FIG. 3A is a flowchart of a fingerprint template input method according to another exemplary embodiment. As shown in FIG. 3A, the fingerprint template input method is applied to the mobile terminal shown in FIG. 1 and includes the following steps.
- step 301 a fingerprint image acquired by the fingerprint recognition sensor is acquired.
- the fingerprint recognition sensor first collects the fingerprint image of the user, and the processor acquires the fingerprint image collected by the fingerprint recognition sensor.
- step 302 a candidate fingerprint template is obtained according to the fingerprint image that has been acquired.
- the processor obtains a candidate fingerprint template according to the acquired fingerprint image.
- the candidate fingerprint template includes at least one fingerprint image.
- the processor first acquires the fingerprint image collected by the fingerprint recognition sensor, the acquired fingerprint image is determined as a candidate fingerprint template; when the processor acquires the ith fingerprint image collected by the fingerprint recognition sensor, the processor All the obtained i fingerprint images are spliced, and the spliced fingerprint image is determined as a candidate fingerprint template.
- step 303 it is detected whether the coverage area of the candidate fingerprint template is greater than a first threshold.
- the coverage area of the candidate fingerprint template is the coverage area of the user's fingerprint. That is, the area in which the fingerprint in the candidate fingerprint template covers the fingerprint of the user is detected.
- the area of the fingerprint of the user is 6 square centimeters and the first threshold is 80% of the area of the fingerprint of the user, it is detected whether the area of the candidate fingerprint template covering the fingerprint of the user is greater than 4.8 square centimeters.
- step 304 if the coverage area of the candidate fingerprint template is less than the first threshold, the first prompt information is displayed.
- the first prompt information is used to prompt an area of the user's fingerprint that has not been covered by the candidate fingerprint template.
- the first prompt information is displayed in the mobile terminal, and the user is prompted with an area of the user fingerprint that has not been covered by the candidate fingerprint template, so that The user continues to collect the user fingerprint corresponding to the area that has not been covered by the candidate fingerprint template from the fingerprint sensor according to the first prompt information.
- the coverage area of the candidate fingerprint template is less than the first threshold.
- a fingerprint image 31 is displayed in the mobile terminal, and the darker area 32 is a fingerprint image in the candidate fingerprint template, and the color is lighter.
- the area 33 is an area that is not covered by the candidate fingerprint template; in order to prompt the user to continue to collect the user fingerprint of the area of the fingerprint sensor that has not been covered by the candidate fingerprint template.
- step 307 is performed.
- step 305 if the coverage area of the candidate fingerprint template is greater than the first threshold, it is detected whether the number of feature points in the candidate fingerprint template is greater than a second threshold.
- the number of feature points in the candidate fingerprint template is extracted by using a fingerprint algorithm stored in the memory.
- the feature point is a point extracted by the fingerprint algorithm according to the fingerprint feature in the candidate fingerprint template. It is detected whether the number of feature points in the candidate fingerprint template is greater than a second threshold.
- the second threshold is 60% of the number of feature points included in the user fingerprint, it is detected whether the number of feature points in the candidate fingerprint template is greater than 60.
- step 306 if the number of feature points in the candidate fingerprint template is less than the second threshold, the second prompt information is displayed.
- the second prompt information is used to indicate that the number of feature points in the candidate fingerprint template is smaller than a third threshold, wherein the second threshold is greater than the third threshold.
- the second prompt information is used to prompt the user that the number of feature points in the candidate fingerprint template is smaller than the third threshold, so that the user continues to collect the user corresponding to the area where the number of feature points is less than the third threshold according to the second prompt information. fingerprint. That is, the second prompt information is used to prompt an area of the candidate fingerprint template with a small number of feature points.
- the third threshold may be a smaller value.
- the coverage area of the candidate fingerprint template is less than the first threshold.
- a nine-square grid 34 is displayed in the mobile terminal, wherein the black area 35 is greater than the number of feature points in the candidate fingerprint template.
- the area of the third threshold is the area where the number of feature points in the candidate fingerprint template is smaller than the third threshold; in order to prompt the user to collect the fingerprint image of the white area 36 in the user fingerprint from the fingerprint recognition sensor according to the displayed prompt information.
- step 307 it is detected whether the number of times the fingerprint recognition sensor collects the fingerprint image reaches a predetermined number of times.
- the user After the user collects the fingerprint image of the user from the fingerprint recognition sensor multiple times according to the first prompt information or the second prompt information, it is detected whether the number of times the fingerprint recognition sensor collects the fingerprint image of the user reaches a predetermined number of times.
- the predetermined number of times refers to the maximum number of times the fingerprint recognition sensor collects the fingerprint image during the fingerprint template input process.
- the maximum number of fingerprint images captured by the fingerprint recognition sensor is 25 times during the fingerprint template input process
- the number of times the fingerprint recognition sensor collects the fingerprint image during the fingerprint template input process is detected between the fingerprint identification sensor and the fingerprint image. Whether it reached 25 times.
- step 308 if the number of times the fingerprint recognition sensor collects the fingerprint image reaches a predetermined number of times, the prompt information of the fingerprint template input failure is displayed.
- the prompt information of the fingerprint template input failure is displayed in the mobile terminal.
- the maximum number of fingerprint images collected by the fingerprint recognition sensor during the fingerprint template input process is 25 times.
- the fingerprint image entered by the user does not satisfy the coverage area of the candidate fingerprint template is greater than the first threshold and If the number of feature points in the candidate fingerprint template is greater than the second threshold, when the fingerprint recognition sensor collects the fingerprint image 25 times, the information of “this entry fails and ends the entry” is displayed in the mobile terminal, as shown in FIG. 3D. .
- step 301 is performed again to obtain the next fingerprint image collected by the fingerprint recognition sensor.
- step 309 if the number of feature points in the candidate fingerprint template is greater than the second threshold, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint.
- the candidate fingerprint template is determined as the fingerprint template of the user fingerprint, and the candidate fingerprint template is successfully Enter as a fingerprint template.
- the fingerprint template input method obtains the ith fingerprint image collected by the fingerprint recognition sensor, i is a positive integer; and obtains the candidate fingerprint template according to all the obtained i fingerprint images. And detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint; and the fingerprint template is improved by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods The quality of the specified number of fixed entries is far greater than the number of times the number of entries is actually required; when the candidate fingerprint template meets the predetermined conditions, the candidate fingerprint template is entered as the fingerprint template of the user's fingerprint, reducing the number of times the fingerprint image is entered. , improve the efficiency of fingerprint template entry efficiency.
- the first prompt information is displayed, and each time the coverage area of the fingerprint image is entered by feedback, a reasonable prompt is used to enter the fingerprint again.
- the location of the image is advantageous for the user to accurately enter the fingerprint information of the fingerprint image.
- the second prompt information is displayed, and each time the number of feature points of the fingerprint image is input, the reasonable prompt prompts the location of the fingerprint image again. Conducive to the user to accurately enter the fingerprint information of the fingerprint image.
- the sequence of detecting whether the coverage area of the candidate fingerprint template is greater than the first threshold and detecting whether the number of feature points in the candidate fingerprint template is greater than the second threshold is not specific.
- the embodiment shown in FIG. 3A detects whether the coverage area of the candidate fingerprint template is greater than the first threshold, and whether the number of feature points in the candidate fingerprint template is detected again when the coverage area of the candidate fingerprint template is greater than the first threshold.
- An example is given by example greater than the second threshold value.
- the number of the feature points in the candidate fingerprint template is greater than the second threshold.
- the coverage area of the candidate fingerprint template is detected. Whether it is greater than the first threshold.
- only the coverage area of the candidate fingerprint template is greater than the first threshold and the number of feature points in the candidate fingerprint template is greater than the second threshold.
- the coverage area of the candidate fingerprint template is greater than the first threshold, and the number of feature points in the candidate fingerprint template is greater than the second threshold.
- One of the pre-conditions may be selected, that is, only one of them may be satisfied. After the condition, the candidate fingerprint template is entered as a fingerprint template of the user's fingerprint.
- a typical user fingerprint contains 100 finite feature points
- the user fingerprint area is 8 square centimeters
- the first threshold is 80% of the user's fingerprint area
- the second threshold is the user. 60% of the number of fingerprint feature points. If the user repeatedly inputs the same area to the fingerprint recognition sensor, and the number of valid feature points included in the area is only 30, and the area of the area is only 3 square centimeters, the coverage area of the candidate fingerprint template is always less than the first threshold. The number of feature points in the candidate fingerprint template is also always smaller than the second threshold. Only after the number of times the fingerprint recognition sensor collects the fingerprint image reaches a predetermined number of times, the fingerprint template input loss is displayed.
- the prompt information of the defeat another possible case, the user transforms the different regions to collect the fingerprint image to the fingerprint recognition sensor, so that the coverage area of the candidate fingerprint template is greater than the first threshold, but the quality of the fingerprint image collected by each fingerprint recognition sensor is too If the number of feature points in the candidate fingerprint template is less than the second threshold, the number of feature points in the candidate fingerprint template is less than the second threshold.
- the secondary fingerprint template enters a prompt message for failure.
- step of displaying the second prompt information in step 306 may be replaced by the following steps, as shown in FIG. 4A:
- Step 401 Detect whether the candidate fingerprint template completely covers the user fingerprint.
- the second threshold When the number of feature points in the candidate fingerprint template is less than the second threshold, it is continued to detect whether the candidate fingerprint template completely covers the user fingerprint.
- step 402 if the candidate fingerprint template completely covers the user fingerprint, the second prompt information is displayed.
- the second prompt information is used to indicate that the number of feature points in the candidate fingerprint template is smaller than a third threshold, wherein the second threshold is greater than the third threshold.
- the second prompt information is displayed in the mobile terminal, and the user is prompted to the area where the number of feature points in the candidate fingerprint template is less than the third threshold, so that the user according to the second
- the prompt information continues to collect the user fingerprint corresponding to the area where the number of feature points is less than the third threshold. That is, the second prompt information is used to prompt an area of the candidate fingerprint template with a small number of feature points.
- the third threshold may be a smaller value.
- step 403 if the candidate fingerprint template has not completely covered the user fingerprint, the third prompt information is displayed.
- the third prompt information is used to prompt an area of the user's fingerprint that has not been covered by the candidate fingerprint template.
- the third information is displayed.
- the third prompt information is displayed in the mobile terminal, and the user is prompted to the area of the user fingerprint that has not been covered by the candidate fingerprint template, so that the user continues to collect the fingerprint sensor according to the third prompt information.
- the candidate fingerprint template when the candidate fingerprint template has not completely covered the user fingerprint, only the area where the candidate fingerprint template covers the user fingerprint is displayed in the mobile terminal; the user continues to collect the fingerprint sensor from the displayed candidate fingerprint template. User fingerprint of the area covered by the fingerprint template.
- the fingerprint template input method obtains the ith fingerprint image collected by the fingerprint recognition sensor, i is a positive integer; and obtains the candidate fingerprint template according to all the obtained i fingerprint images. And detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint; and the fingerprint template is improved by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods The quality of the specified number of fixed entries is far greater than the number of times the number of entries is actually required; when the candidate fingerprint template meets the predetermined conditions, the candidate fingerprint template is entered as the fingerprint template of the user's fingerprint, reducing the number of times the fingerprint image is entered. , improve the efficiency of fingerprint template entry efficiency.
- the second prompt information or the third prompt information is displayed, and the feature points of the fingerprint image are input by feedback each time.
- the number or coverage area, reasonable prompts to enter the location of the fingerprint image again, is conducive to the user to accurately enter the fingerprint information of the fingerprint image.
- the manner of displaying the prompt information includes displaying in the form of text, displaying in the form of a picture, displaying in the form of a table, and speaking by voice.
- Form prompts or animations, etc. as long as the fingerprint image in the candidate fingerprint template, the area not covered by the candidate fingerprint template, and the candidate fingerprint model can be distinguished.
- the number of feature points in the board is smaller than the area of the third threshold.
- the manner in which the prompt information is displayed in this embodiment is not specifically limited.
- the embodiment of FIG. 3A and the embodiment of FIG. 4A are exemplified only in the form of a picture and a form of a nine-square grid.
- FIG. 5 is a block diagram of a fingerprint template input device according to an exemplary embodiment. As shown in FIG. 5, the fingerprint template input device is applied to the mobile terminal shown in FIG. 1.
- the fingerprint template input device includes but not Limited to:
- the fingerprint obtaining module 510 is configured to acquire an ith fingerprint image collected by the fingerprint recognition sensor, where i is a positive integer.
- the template candidate module 520 is configured to obtain a candidate fingerprint template according to all the i fingerprint images that have been acquired.
- the template detecting module 530 is configured to detect whether the candidate fingerprint template satisfies a predetermined condition, where the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold, and the number of feature points in the candidate fingerprint template is greater than the second threshold.
- the coverage area is the coverage area of the user's fingerprint.
- the template entry module 540 is configured to record the candidate fingerprint template as a fingerprint template of the user fingerprint when the candidate fingerprint template satisfies a predetermined condition.
- the fingerprint template input device acquires the ith fingerprint image collected by the fingerprint recognition sensor, i is a positive integer; and obtains the candidate fingerprint template according to all the obtained i fingerprint images. And detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint; and the fingerprint template is improved by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods The quality of the specified number of fixed entries is far greater than the number of times the number of entries is actually required; when the candidate fingerprint template meets the predetermined conditions, the candidate fingerprint template is entered as the fingerprint template of the user's fingerprint, reducing the number of times the fingerprint image is entered. , improved fingerprint template recording The effect of efficiency.
- FIG. 6 is a block diagram of a fingerprint template input device according to an exemplary embodiment. As shown in FIG. 6 , the fingerprint template input device is applied to the mobile terminal shown in FIG. 1 , and the fingerprint template input device includes but not Limited to:
- the fingerprint obtaining module 610 is configured to acquire an ith fingerprint image collected by the fingerprint recognition sensor, where i is a positive integer.
- the template candidate module 620 is configured to obtain a candidate fingerprint template according to all the i fingerprint images that have been acquired.
- the template detection module 630 is configured to detect whether the candidate fingerprint template satisfies a predetermined condition, where the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold, and the number of feature points in the candidate fingerprint template is greater than the second threshold.
- the coverage area is the coverage area of the user's fingerprint.
- the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold.
- the first display module 640 is configured to display the first prompt information when the coverage area of the candidate fingerprint template is smaller than the first threshold.
- the first prompt information is used to prompt the user that the fingerprint is not covered by the candidate fingerprint template.
- the predetermined condition includes that the number of feature points in the candidate fingerprint template is greater than a second threshold.
- the second display module 660 is configured to display the second prompt information when the number of feature points in the candidate fingerprint template is less than the second threshold, and the second prompt information is used to prompt the number of feature points in the candidate fingerprint template to be smaller than the third The area of the threshold, the second threshold being greater than the third threshold.
- the second display module 660 can include the following submodules:
- the first detecting sub-module 661 is configured to detect whether the candidate fingerprint template completely covers the user fingerprint
- the first prompt sub-module 662 is configured to: when the candidate fingerprint template completely covers the user fingerprint, The second prompt information is displayed.
- the third display module 670 is configured to display the third prompt information when the candidate fingerprint template has not completely covered the user fingerprint, and the third prompt information is used to prompt the user that the fingerprint is not covered by the candidate fingerprint template.
- the number detection module 690 is configured to detect whether the number of times the fingerprint recognition sensor collects the fingerprint image reaches a predetermined number of times;
- the failure display module 691 is configured to display the prompt information of the failure of the current fingerprint template entry when the number of times the fingerprint recognition sensor acquires the fingerprint image reaches a predetermined number of times.
- the template entry module 692 is configured to record the candidate fingerprint template as a fingerprint template of the user fingerprint when the candidate fingerprint template satisfies a predetermined condition.
- the fingerprint template input device acquires the ith fingerprint image collected by the fingerprint recognition sensor, i is a positive integer; and obtains the candidate fingerprint template according to all the obtained i fingerprint images. And detecting whether the candidate fingerprint template satisfies a predetermined condition; if the candidate fingerprint template satisfies a predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint; and the fingerprint template is improved by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods The quality of the specified number of fixed entries is far greater than the number of times the number of entries is actually required; when the candidate fingerprint template meets the predetermined conditions, the candidate fingerprint template is entered as the fingerprint template of the user's fingerprint, reducing the number of times the fingerprint image is entered. , improve the efficiency of fingerprint template entry efficiency.
- the first prompt information is displayed, and the coverage area of the fingerprint image is entered every time by feedback, and the location of the fingerprint image is re-entered, thereby facilitating accurate user input. Fingerprint information of the fingerprint image.
- the second is displayed.
- the prompt information by feedback each time the number of feature points of the fingerprint image is entered, and the reasonable prompt to enter the area of the fingerprint image again, is beneficial to the user to accurately enter the fingerprint information of the fingerprint image.
- An exemplary embodiment of the present disclosure provides a fingerprint template input device, which can implement a fingerprint template input method provided by an embodiment of the present disclosure, where the fingerprint template input device includes: a processor, and a memory configured to store processor executable instructions;
- processor is configured to:
- the predetermined condition includes that the coverage area of the candidate fingerprint template is greater than the first threshold and the number of feature points in the candidate fingerprint template is greater than a second threshold, and the coverage area is coverage of the user fingerprint. area;
- the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as a fingerprint template of the user fingerprint.
- FIG. 7 is a block diagram of still another fingerprint template entry device according to an exemplary embodiment.
- device 700 can be a mobile phone, a computer, a digital broadcast terminal, an information transceiving device, a gaming console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
- apparatus 700 can include one or more of the following components: processing component 702, memory 704, power component 706, multimedia component 708, audio component 710, input/output (I/O) interface 712, sensor component 714, and Communication component 716.
- Processing component 702 typically controls the overall operation of device 700, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
- Processing component 702 can include one or more processors 718 to execute instructions to perform all or part of the steps of the methods described above.
- processing component 702 can include one or more modules to facilitate processing component 702 and others The interaction between components.
- processing component 702 can include a multimedia module to facilitate interaction between multimedia component 708 and processing component 702.
- Memory 704 is configured to store various types of data to support operation at device 700. Examples of such data include instructions for any application or method operating on device 700, contact data, phone book data, information, pictures, video, and the like. Memory 704 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
- SRAM static random access memory
- EEPROM electrically erasable programmable read only memory
- EPROM erasable Programmable read only memory
- PROM programmable read only memory
- ROM read only memory
- magnetic memory flash memory
- flash memory magnetic or optical disk.
- Power component 706 provides power to various components of device 700.
- Power component 706 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for device 700.
- the multimedia component 708 includes a screen between the device 700 and the user that provides an output interface.
- the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user.
- the touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation.
- the multimedia component 708 includes a front camera and/or a rear camera. When the device 700 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
- the audio component 710 is configured to output and/or input an audio signal.
- audio component 710 includes a microphone (MIC) that is configured to receive an external audio signal when device 700 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. Received audio The signals may be further stored in memory 704 or transmitted via communication component 716.
- the audio component 710 also includes a speaker configured to output an audio signal.
- the I/O interface 712 provides an interface between the processing component 702 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.
- Sensor assembly 714 includes one or more sensors configured to provide a status assessment of various aspects of device 700.
- sensor component 714 can detect an open/closed state of device 700, relative positioning of components, such as a display and a keypad of device 700, and sensor component 714 can also detect a change in position of device 700 or a component of device 700, user The presence or absence of contact with device 700, device 700 orientation or acceleration/deceleration and temperature variation of device 700.
- Sensor assembly 714 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
- Sensor component 714 can also include a light sensor, such as a CMOS or CCD image sensor, configured for use in imaging applications.
- the sensor component 714 can also include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
- Communication component 716 is configured to facilitate wired or wireless communication between device 700 and other devices.
- the device 700 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
- communication component 716 receives broadcast signals or broadcast associated information from an external broadcast management system via a broadcast channel.
- communication component 716 also includes a near field communication (NFC) module to facilitate short range communication.
- NFC near field communication
- the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
- RFID radio frequency identification
- IrDA infrared data association
- UWB ultra-wideband
- Bluetooth Bluetooth
- apparatus 700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Gate array (FPGA), controller, microcontroller, micro Implemented by a processor or other electronic component, configured to perform the fingerprint template entry method described above.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGA field programmable Gate array
- controller microcontroller, micro Implemented by a processor or other electronic component, configured to perform the fingerprint template entry method described above.
- non-transitory computer readable storage medium comprising instructions, such as a memory 704 comprising instructions executable by processor 718 of apparatus 700 to perform the fingerprint template entry method described above.
- the non-transitory computer readable storage medium may be a ROM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, or the like.
- the i-th fingerprint image acquired by the fingerprint recognition sensor is obtained, i is a positive integer; the candidate fingerprint template is obtained according to all the obtained i-fingerprint images; and whether the candidate fingerprint template meets the predetermined condition is detected; If the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as the fingerprint template of the user fingerprint; and the method for improving the quality of the fingerprint template by repeatedly recording the fingerprint image of the same area due to the fixed number of entry methods is solved, resulting in a large number of fixed fixed entry times.
- the problem of the number of times of input required when the candidate fingerprint template satisfies the predetermined condition, the candidate fingerprint template is entered as the fingerprint template of the user fingerprint, which reduces the number of times the fingerprint image is entered, and improves the efficiency of fingerprint template entry.
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
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- Image Analysis (AREA)
Abstract
一种指纹模板录入方法及装置,属于指纹识别领域。所述指纹模板录入方法包括:获取指纹识别传感器采集到的第i张指纹图像,i为正整数(201);根据已经获取到的全部i张指纹图像得到候选指纹模板(202);检测候选指纹模板是否满足预定条件(203);若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板(204)。通过该指纹模板录入方法,不仅降低了录入指纹图像的次数,而且还提高了指纹模板的录入效率。
Description
相关申请的交叉引用
本申请基于申请号为201610065364.7、申请日为2015年1月29日的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
本公开实施例涉及指纹识别领域,特别涉及一种指纹模板录入方法及装置。
指纹识别技术已经在诸如智能手机、平板电脑之类的移动终端上得到广泛应用。指纹识别技术包括两个部分:指纹模板录入过程和指纹识别过程。
指纹模板录入过程是指指纹算法通过把用户多次录入的指纹图像合成指纹模板保存至指纹模板数据库中。由于用户操作习惯和指纹识别传感器灵敏度等多重因素的影响,用户单次录入的指纹图像并不能完整的反映用户的指纹信息,相关技术中,要求用户重复录入固定次数的指纹图像,通过将多次录入的指纹图像进行拼接形成指纹模板。由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数。
发明内容
为了解决由于固定次数录入方法通过重复录用同一区域的指纹图像来
提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题,本公开实施例提供一种指纹模板录入方法及装置。所述技术方案如下:
根据本公开实施例的第一方面,提供一种指纹模板录入方法,该方法包括:
获取指纹识别传感器采集到的第i张指纹图像,i为正整数;
根据已经获取到的全部i张指纹图像得到候选指纹模板;
检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积;
若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板。
可选的,预定条件包括候选指纹模板的覆盖面积大于第一阈值;
该方法,还包括:
若候选指纹模板的覆盖面积小于第一阈值,则显示第一提示信息,第一提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域;
令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
可选的,预定条件包括候选指纹模板中的特征点个数大于第二阈值;
该方法,还包括:
若候选指纹模板中的特征点个数小于第二阈值,则显示第二提示信息,第二提示信息用于提示候选指纹模板中的特征点个数小于第三阈值的区域,第二阈值大于第三阈值;
令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
可选的,显示第二提示信息,包括:
检测候选指纹模板是否完全覆盖用户指纹;
若候选指纹模板完全覆盖用户指纹,则显示第二提示信息。
可选的,该方法,还包括:
若候选指纹模板尚未完全覆盖用户指纹,则显示第三提示信息,第三提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
可选的,该方法还包括:
检测指纹识别传感器采集指纹图像的次数是否达到预定次数;
若指纹识别传感器采集指纹图像的次数达到预定次数,则显示本次指纹模板录入失败的提示信息。
根据本公开实施例的第二方面,提供一种指纹模板录入装置,该装置包括:
指纹获取模块,被配置为获取指纹识别传感器采集到的第i张指纹图像,i为正整数;
模板候选模块,被配置为根据已经获取到的全部i张指纹图像得到候选指纹模板;
模板检测模块,被配置为检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积;
模板录入模块,被配置为在候选指纹模板满足预定条件时,将候选指纹模板录入为用户指纹的指纹模板。
可选的,预定条件包括候选指纹模板的覆盖面积大于第一阈值;
该装置,还包括:
第一显示模块,被配置为在候选指纹模板的覆盖面积小于第一阈值时,显示第一提示信息,第一提示信息用于提示用户指纹中尚未被候选指纹模
板覆盖的区域;
指纹采集模块,被配置为令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
可选的,预定条件包括候选指纹模板中的特征点个数大于第二阈值;
该装置,还包括:
第二显示模块,被配置为在候选指纹模板中的特征点个数小于第二阈值时,显示第二提示信息,第二提示信息用于提示候选指纹模板中的特征点个数小于第三阈值的区域,第二阈值大于第三阈值;
第二执行模块,被配置为令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
可选的,第二显示模块,包括:
第一检测子模块,被配置为检测候选指纹模板是否完全覆盖用户指纹;
第一提示子模块,被配置为在候选指纹模板完全覆盖用户指纹时,显示第二提示信息。
可选的,该装置,还包括:
第三显示模块,被配置为在候选指纹模板尚未完全覆盖用户指纹时,显示第三提示信息,第三提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
可选的,该装置还包括:
次数检测模块,被配置为检测指纹识别传感器采集指纹图像的次数是否达到预定次数;
失败显示模块,被配置为在指纹识别传感器采集指纹图像的次数达到预定次数时,显示本次指纹模板录入失败的提示信息。
根据本公开实施例的第三方面,提供一种指纹模板录入装置,该装置包括:
处理器;
配置为存储处理器可执行指令的存储器;
其中,处理器被配置为:
获取指纹识别传感器采集到的第i张指纹图像,i为正整数;
根据已经获取到的全部i张指纹图像得到候选指纹模板;
检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积;
若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板。
本公开的实施例提供的技术方案可以包括以下有益效果:
通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录入效率的效果。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本公开。
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本公开的实施例,并于说明书一起用于解释本公开实施例的原理。
图1是根据部分示例性实施例示出的一种移动终端的硬件结构图;
图2是根据一示例性实施例示出的一种指纹模板录入方法的流程图;
图3A是根据另一示例性实施例示出的一种指纹模板录入方法的流程图;
图3B是根据一示例性实施例示出的一种显示第一提示信息的示意图;
图3C是根据一示例性实施例示出的一种显示第二提示信息的示意图;
图3D是根据一示例性实施例示出的一种显示录入失败信息的示意图;
图4A是根据另一示例性实施例示出的一种指纹模板录入方法的流程图;
图4B是根据一示例性实施例示出的一种显示第三提示信息的示意图;
图5是根据一示例性实施例示出的一种指纹模板录入装置的框图;
图6是根据另一示例性实施例示出的一种指纹模板录入装置的框图;
图7是根据一示例性实施例示出的又一种指纹模板录入装置的框图。
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
图1是根据一示例性实施例示出的移动终端的硬件结构图。如图1所示,该移动终端可以是诸如智能手机、平板电脑、电子书阅读器之类的终端。该移动终端包括处理器120、分别与处理器120相连的存储器140和指纹识别传感器160。其中:
存储器140中存储有处理器120的可执行指令。
可选的,存储器140中存储有指纹算法的指令。
指纹识别传感器160又称指纹识别模组。指纹识别传感器160配置为
采集用户的指纹图像。处理器120根据存储器140存储的指纹算法和指纹识别传感器160采集到的用户的指纹图像得到用户指纹的指纹模板,并将得到的指纹模板录入到指纹识别传感器160中。以便在指纹识别过程中利用指纹模板对用户的指纹进行识别,从而实现移动终端的屏幕解锁、移动支付等功能。
图2是根据一示例性实施例示出的一种指纹模板录入方法的流程图,如图2所示,该指纹模板录入方法应用于图1所示的移动终端中,包括以下步骤。
在步骤201中,获取指纹识别传感器采集到的第i张指纹图像,i为正整数。
在步骤202中,根据已经获取到的全部i张指纹图像得到候选指纹模板。
在步骤203中,检测候选指纹模板是否满足预定条件。
预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积。
在步骤204中,若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板。
综上所述,本公开实施例中提供的指纹模板录入方法,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录
入效率的效果。
图3A是根据另一示例性实施例示出的一种指纹模板录入方法的流程图,如图3A所示,该指纹模板录入方法应用于图1所示的移动终端中,包括以下步骤。
在步骤301中,获取指纹识别传感器采集到的指纹图像。
在指纹模板录入过程中,指纹识别传感器首先采集用户的指纹图像,处理器获取指纹识别传感器采集到的指纹图像。
在步骤302中,根据已经获取到的指纹图像得到候选指纹模板。
处理器根据获取到的指纹图像得到候选指纹模板。
可选的,候选指纹模板包括至少一张指纹图像。当处理器第一次获取指纹识别传感器采集到的指纹图像时,将获取到的指纹图像确定为候选指纹模板;当处理器获取到指纹识别传感器采集到的第i张指纹图像时,处理器将获取到的全部i张指纹图像进行拼接,将拼接后的指纹图像确定为候选指纹模板。
在步骤303中,检测候选指纹模板的覆盖面积是否大于第一阈值。
候选指纹模板的覆盖面积是对用户指纹的覆盖面积。也即检测候选指纹模板中的指纹覆盖用户指纹的面积。
比如:假定用户指纹的面积是6平方厘米,第一阈值为用户指纹的面积的80%,则检测候选指纹模板覆盖用户指纹的面积是否大于4.8平方厘米。
在步骤304中,若候选指纹模板的覆盖面积小于第一阈值,则显示第一提示信息。
第一提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
当候选指纹模板的覆盖面积小于第一阈值时,在移动终端中显示第一提示信息,向用户提示用户指纹中尚未被候选指纹模板覆盖的区域,以便
用户根据第一提示信息继续向指纹传感器中采集尚未被候选指纹模板覆盖的区域对应的用户指纹。
比如:假定用户指纹的面积是6平方厘米,第一阈值为用户指纹的面积的80%,候选指纹模板覆盖用户指纹的面积为4平方厘米,则候选指纹模板的覆盖面积小于第一阈值。
比如:如图3B所示,当候选指纹模板的覆盖面积小于第一阈值时,在移动终端中显示一张指纹图像31,颜色较深的区域32为候选指纹模板中的指纹图像,颜色较浅的区域33为未被候选指纹模板覆盖的区域;以便提示用户继续向指纹传感器中采集尚未被候选指纹模板覆盖的区域的用户指纹。
当候选指纹模板的覆盖面积小于第一阈值时,显示第一提示信息后,执行步骤307。
在步骤305中,若候选指纹模板的覆盖面积大于第一阈值,则检测候选指纹模板中的特征点个数是否大于第二阈值。
当候选指纹模板的覆盖面积大于第一阈值时,利用存储器中存储的指纹算法提取候选指纹模板中的特征点个数。其中,特征点是指纹算法根据候选指纹模板中的指纹特征提取的点。检测候选指纹模板中的特征点个数是否大于第二阈值。
比如:假定用户指纹包含有100个特征点,第二阈值为用户指纹包含的特征点个数的60%,则检测候选指纹模板中的特征点个数是否大于60个。
在步骤306中,若候选指纹模板中的特征点个数小于第二阈值,则显示第二提示信息。
第二提示信息用于提示候选指纹模板中的特征点个数小于第三阈值的区域,其中,第二阈值大于第三阈值。
当候选指纹模板中的特征点个数小于第二阈值时,在移动终端中显示
第二提示信息,向用户提示候选指纹模板中的特征点个数小于第三阈值的区域,以便用户根据第二提示信息继续向指纹传感器中采集特征点个数小于第三阈值的区域对应的用户指纹。也即,第二提示信息用于提示候选指纹模板中特征点个数较少的区域。
可选的,第三阈值可以是一个较小的数值。
比如:假定用户指纹的面积是6平方厘米,第一阈值为用户指纹的面积的80%,候选指纹模板覆盖用户指纹的面积为4平方厘米,则候选指纹模板的覆盖面积小于第一阈值。
比如:如图3C所示,当候选指纹模板中的特征点个数小于第二阈值时,在移动终端中显示一张九宫格34,其中,黑色区域35为候选指纹模板中的特征点个数大于第三阈值的区域,白色区域36为候选指纹模板中的特征点个数小于第三阈值的区域;以便提示用户根据显示的提示信息,向指纹识别传感器采集用户指纹中白色区域36的指纹图像。
在步骤307中,检测指纹识别传感器采集指纹图像的次数是否达到预定次数。
当用户根据第一提示信息或第二提示信息多次向指纹识别传感器采集用户的指纹图像后,检测指纹识别传感器采集用户的指纹图像的次数是否达到预定次数。
其中,预定次数是指指纹模板录入过程中指纹识别传感器采集指纹图像的最大次数。
比如:假定指纹模板录入过程中指纹识别传感器采集指纹图像的最大次数为25次,则在指纹识别传感器每次采集指纹图像之间先检测本次指纹模板录入过程中指纹识别传感器采集指纹图像的次数是否达到25次。
在步骤308中,若指纹识别传感器采集指纹图像的次数达到预定次数,则显示本次指纹模板录入失败的提示信息。
当在本次指纹模板录入过程中,指纹识别传感器采集指纹图像的次数达到了预定次数,则在移动终端中显示本次指纹模板录入失败的提示信息。
比如:假定指纹模板录入过程中指纹识别传感器采集指纹图像的最大次数为25次,当在本次指纹模板录入过程中,用户录入的指纹图像一直不满足候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值的条件,则当指纹识别传感器采集指纹图像25次后,在移动终端中显示“本次录入失败,结束录入”的信息,如图3D所示。
可选的,若指纹识别传感器采集指纹图像的次数未达到预定次数,则再次执行步骤301,获取指纹识别传感器采集到的下一张指纹图像。
在步骤309中,若候选指纹模板中的特征点个数大于第二阈值,则将候选指纹模板录入为用户指纹的指纹模板。
当指纹算法根据候选指纹模板中的指纹特征提取到的特征点个数大于预先设定的第二阈值时,则将该候选指纹模板确定为该用户指纹的指纹模板,并将该候选指纹模板成功录入为指纹模板。
综上所述,本公开实施例中提供的指纹模板录入方法,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录入效率的效果。
另外,当候选指纹模板的覆盖面积小于第一阈值时,会显示第一提示信息,通过反馈每次录入指纹图像的覆盖面积,合理的提示再次录入指纹
图像的区域位置,有利于用户准确的录入指纹图像的指纹信息。
同时,当候选指纹模板中的特征点个数小于第二阈值时,会显示第二提示信息,通过反馈每次录入指纹图像的特征点个数,合理的提示再次录入指纹图像的区域位置,有利于用户准确的录入指纹图像的指纹信息。
需要说明的一点是,在图3A所示的实施例中,对检测候选指纹模板的覆盖面积是否大于第一阈值和检测候选指纹模板中的特征点个数是否大于第二阈值的先后顺序不作具体限定,图3A所示的实施例仅以先检测候选指纹模板的覆盖面积是否大于第一阈值,在候选指纹模板的覆盖面积大于第一阈值时,再检测候选指纹模板中的特征点个数是否大于第二阈值为例进行举例说明。作为一种可能的实现方式,可以先检测候选指纹模板中的特征点个数是否大于第二阈值,在候选指纹模板中的特征点个数大于第二阈值时,再检测候选指纹模板的覆盖面积是否大于第一阈值。
需要说明的另一点时,图3A所示的实施例中,仅以候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值同时为预先条件进行举例说明。作为一种可能的实现方式,候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中可以选择其一作为预先条件,也即,可以只满足其中的一个条件后即将候选指纹模板录入为用户指纹的指纹模板。
在一个具体的例子中,假定一个典型的用户指纹包含的有限特征点个数为100个,用户指纹的面积是8平方厘米,第一阈值为用户指纹的面积的80%,第二阈值为用户指纹特征点个数的60%。如果用户向指纹识别传感器反复录入同一区域,而这个区域中包含的有效特征点个数只有30个,且这个区域的面积仅为3平方厘米,则候选指纹模板的覆盖面积总小于第一阈值,候选指纹模板中的特征点个数也总小于第二阈值,只能在指纹识别传感器采集指纹图像的次数达到预定次数后,显示本次指纹模板录入失
败的提示信息;另一种可能的情况,用户变换不同区域向指纹识别传感器采集指纹图像,使得候选指纹模板的覆盖面积大于第一阈值,但是由于每次指纹识别传感器采集到的指纹图像质量太差,导致候选指纹模板中的特征点个数小于第二阈值,若当指纹识别传感器采集指纹图像的次数达到预定次数时,候选指纹模板中的特征点个数仍小于第二阈值,则显示本次指纹模板录入失败的提示信息。
基于图3A所示的指纹模板录入方法,作为一种可能的实现方式,在步骤306中显示第二提示信息的步骤可以替换为如下步骤,如图4A所示:
步骤401,检测候选指纹模板是否完全覆盖用户指纹。
在候选指纹模板中的特征点个数小于第二阈值时,继续检测候选指纹模板是否完全覆盖用户指纹。
在步骤402中,若候选指纹模板完全覆盖用户指纹,则显示第二提示信息。
第二提示信息用于提示候选指纹模板中的特征点个数小于第三阈值的区域,其中,第二阈值大于第三阈值。
当候选指纹模板中的特征点个数小于第二阈值时,在移动终端中显示第二提示信息,向用户提示候选指纹模板中的特征点个数小于第三阈值的区域,以便用户根据第二提示信息继续向指纹传感器中采集特征点个数小于第三阈值的区域对应的用户指纹。也即,第二提示信息用于提示候选指纹模板中特征点个数较少的区域。
可选的,第三阈值可以是一个较小的数值。
在步骤403中,若候选指纹模板尚未完全覆盖用户指纹,则显示第三提示信息。
第三提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
若候选指纹模板尚未完全覆盖用户指纹,则显示第三信息。
当候选指纹模板尚未完全覆盖用户指纹时,在移动终端中显示第三提示信息,向用户提示用户指纹中尚未被候选指纹模板覆盖的区域,以便用户根据第三提示信息继续向指纹传感器中采集尚未被候选指纹模板覆盖的区域对应的用户指纹。
比如:如图4B所示,当候选指纹模板尚未完全覆盖用户指纹时,在移动终端中仅显示候选指纹模板覆盖用户指纹的区域;用户根据显示的候选指纹模板继续向指纹传感器中采集尚未被候选指纹模板覆盖的区域的用户指纹。
综上所述,本公开实施例中提供的指纹模板录入方法,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录入效率的效果。
同时,当候选指纹模板中的特征点个数小于第二阈值时,检测候选指纹模板是否完全覆盖用户指纹,会显示第二提示信息或第三提示信息,通过反馈每次录入指纹图像的特征点个数或覆盖面积,合理的提示再次录入指纹图像的区域位置,有利于用户准确的录入指纹图像的指纹信息。
需要说明的一点是,图3A所示的实施例和图4A所示的实施例中,显示提示信息的方式包括以文字的形式显示、以图片的形式显示、以表格的形式显示、以语音的形式提示或者以动画的形式显示等等,只要能够区分候选指纹模板中的指纹图像、未被候选指纹模板覆盖的区域和候选指纹模
板中的特征点个数小于第三阈值的区域即可。本实施例中对显示提示信息的方式不作具体限定,图3A实施例和图4A实施例中仅以图片的形式和九宫格的形式进行举例说明。
下述为本公开装置实施例,可以配置为执行本公开方法实施例。对于本公开装置实施例中未披露的细节,请参照本公开方法实施例。
图5是根据一示例性实施例示出的一种指纹模板录入装置的框图,如图5所示,该指纹模板录入装置应用于图1所示的移动终端中,该指纹模板录入装置包括但不限于:
指纹获取模块510,被配置为获取指纹识别传感器采集到的第i张指纹图像,i为正整数。
模板候选模块520,被配置为根据已经获取到的全部i张指纹图像得到候选指纹模板。
模板检测模块530,被配置为检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积。
模板录入模块540,被配置为在候选指纹模板满足预定条件时,将候选指纹模板录入为用户指纹的指纹模板。
综上所述,本公开实施例中提供的指纹模板录入装置,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录
入效率的效果。
图6是根据一示例性实施例示出的一种指纹模板录入装置的框图,如图6所示,该指纹模板录入装置应用于图1所示的移动终端中,该指纹模板录入装置包括但不限于:
指纹获取模块610,被配置为获取指纹识别传感器采集到的第i张指纹图像,i为正整数。
模板候选模块620,被配置为根据已经获取到的全部i张指纹图像得到候选指纹模板。
模板检测模块630,被配置为检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积。
预定条件包括候选指纹模板的覆盖面积大于第一阈值。
第一显示模块640,被配置为在候选指纹模板的覆盖面积小于第一阈值时,显示第一提示信息,第一提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
第一执行模块650,被配置为令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
预定条件包括候选指纹模板中的特征点个数大于第二阈值。
第二显示模块660,被配置为在候选指纹模板中的特征点个数小于第二阈值时,显示第二提示信息,第二提示信息用于提示候选指纹模板中的特征点个数小于第三阈值的区域,第二阈值大于第三阈值。
可选的,本实施例中,第二显示模块660可以包括如下子模块:
第一检测子模块661,被配置为检测候选指纹模板是否完全覆盖用户指纹;
第一提示子模块662,被配置为在候选指纹模板完全覆盖用户指纹时,
显示第二提示信息。
第三显示模块670,被配置为在候选指纹模板尚未完全覆盖用户指纹时,显示第三提示信息,第三提示信息用于提示用户指纹中尚未被候选指纹模板覆盖的区域。
第二执行模块680,被配置为令i=i+1,再次执行获取指纹识别传感器采集到的第i张指纹图像的步骤。
次数检测模块690,被配置为检测指纹识别传感器采集指纹图像的次数是否达到预定次数;
失败显示模块691,被配置为在指纹识别传感器采集指纹图像的次数达到预定次数时,显示本次指纹模板录入失败的提示信息。
模板录入模块692,被配置为在候选指纹模板满足预定条件时,将候选指纹模板录入为用户指纹的指纹模板。
综上所述,本公开实施例中提供的指纹模板录入装置,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录入效率的效果。
另外,当候选指纹模板的覆盖面积小于第一阈值时,会显示第一提示信息,通过反馈每次录入指纹图像的覆盖面积,合理的提示再次录入指纹图像的区域位置,有利于用户准确的录入指纹图像的指纹信息。
同时,当候选指纹模板中的特征点个数小于第二阈值时,会显示第二
提示信息,通过反馈每次录入指纹图像的特征点个数,合理的提示再次录入指纹图像的区域位置,有利于用户准确的录入指纹图像的指纹信息。
关于上述实施例中的装置,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。
本公开一示例性实施例提供了一种指纹模板录入装置,能够实现本公开实施例提供的指纹模板录入方法,该指纹模板录入装置包括:处理器、配置为存储处理器可执行指令的存储器;
其中,处理器被配置为:
获取指纹识别传感器采集到的第i张指纹图像,i为正整数;
根据已经获取到的全部i张指纹图像得到候选指纹模板;
检测候选指纹模板是否满足预定条件,预定条件包括候选指纹模板的覆盖面积大于第一阈值和候选指纹模板中的特征点个数大于第二阈值中的至少一种,覆盖面积是对用户指纹的覆盖面积;
若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板。
图7是根据一示例性实施例示出的又一种指纹模板录入装置的框图。例如,装置700可以是移动电话、计算机、数字广播终端、信息收发设备、游戏控制台、平板设备、医疗设备、健身设备、个人数字助理等。
参照图7,装置700可以包括以下一个或多个组件:处理组件702,存储器704,电源组件706,多媒体组件708,音频组件710,输入/输出(I/O)接口712,传感器组件714,以及通信组件716。
处理组件702通常控制装置700的整体操作,诸如与显示、电话呼叫、数据通信、相机操作和记录操作相关联的操作。处理组件702可以包括一个或多个处理器718来执行指令,以完成上述的方法的全部或部分步骤。此外,处理组件702可以包括一个或多个模块,便于处理组件702和其他
组件之间的交互。例如,处理组件702可以包括多媒体模块,以方便多媒体组件708和处理组件702之间的交互。
存储器704被配置为存储各种类型的数据以支持在装置700的操作。这些数据的示例包括用于在装置700上操作的任何应用程序或方法的指令、联系人数据、电话簿数据、信息、图片、视频等。存储器704可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(SRAM)、电可擦除可编程只读存储器(EEPROM)、可擦除可编程只读存储器(EPROM)、可编程只读存储器(PROM)、只读存储器(ROM)、磁存储器、快闪存储器、磁盘或光盘。
电源组件706为装置700的各种组件提供电力。电源组件706可以包括电源管理系统、一个或多个电源、及其他与为装置700生成、管理和分配电力相关联的组件。
多媒体组件708包括在装置700和用户之间的提供一个输出接口的屏幕。在一些实施例中,屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板,屏幕可以被实现为触摸屏,以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界,而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中,多媒体组件708包括一个前置摄像头和/或后置摄像头。当装置700处于操作模式,如拍摄模式或视频模式时,前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件710被配置为输出和/或输入音频信号。例如,音频组件710包括一个麦克风(MIC),当装置700处于操作模式,如呼叫模式、记录模式和语音识别模式时,麦克风被配置为接收外部音频信号。所接收的音频
信号可以被进一步存储在存储器704或经由通信组件716发送。在一些实施例中,音频组件710还包括一个扬声器,配置为输出音频信号。
I/O接口712为处理组件702和外围接口模块之间提供接口,上述外围接口模块可以是键盘、点击轮、按钮等。这些按钮可包括但不限于:主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件714包括一个或多个传感器,配置为为装置700提供各个方面的状态评估。例如,传感器组件714可以检测到装置700的打开/关闭状态,组件的相对定位,例如组件为装置700的显示器和小键盘,传感器组件714还可以检测装置700或装置700一个组件的位置改变,用户与装置700接触的存在或不存在,装置700方位或加速/减速和装置700的温度变化。传感器组件714可以包括接近传感器,被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件714还可以包括光传感器,如CMOS或CCD图像传感器,配置为在成像应用中使用。在一些实施例中,该传感器组件714还可以包括加速度传感器、陀螺仪传感器、磁传感器、压力传感器或温度传感器。
通信组件716被配置为便于装置700和其他设备之间有线或无线方式的通信。装置700可以接入基于通信标准的无线网络,如Wi-Fi、2G或3G、或它们的组合。在一个示例性实施例中,通信组件716经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中,通信组件716还包括近场通信(NFC)模块,以促进短程通信。例如,NFC模块可基于射频识别(RFID)技术、红外数据协会(IrDA)技术、超宽带(UWB)技术、蓝牙(BT)技术和其他技术来实现。
在示例性实施例中,装置700可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处
理器或其他电子元件实现,配置为执行上述指纹模板录入方法。
在示例性实施例中,还提供了一种包括指令的非临时性计算机可读存储介质,例如包括指令的存储器704,上述指令可由装置700的处理器718执行以完成上述指纹模板录入方法。例如,非临时性计算机可读存储介质可以是ROM、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本公开实施例的其它实施方案。本申请旨在涵盖本公开实施例的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开实施例的真正范围和精神由下面的权利要求指出。
应当理解的是,本公开实施例并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开实施例的范围仅由所附的权利要求来限制。
在本公开实施例中,通过获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张指纹图像得到候选指纹模板;检测候选指纹模板是否满足预定条件;若候选指纹模板满足预定条件,则将候选指纹模板录入为用户指纹的指纹模板;解决了由于固定次数录入方法通过重复录用同一区域的指纹图像来提高指纹模板的质量,导致规定的固定录入次数远大于实际需要的录入次数的问题;达到了当候选指纹模板满足预定条件时,则将候选指纹模板录入为用户指纹的指纹模板,降低了录入指纹图像的次数,提高了指纹模板录入效率的效果。
Claims (13)
- 一种指纹模板录入方法,包括:获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张所述指纹图像得到候选指纹模板;检测所述候选指纹模板是否满足预定条件,所述预定条件包括所述候选指纹模板的覆盖面积大于第一阈值和所述候选指纹模板中的特征点个数大于第二阈值中的至少一种,所述覆盖面积是对用户指纹的覆盖面积;若所述候选指纹模板满足所述预定条件,则将所述候选指纹模板录入为所述用户指纹的指纹模板。
- 根据权利要求1所述的方法,其中,所述预定条件包括所述候选指纹模板的覆盖面积大于所述第一阈值;所述方法,还包括:若所述候选指纹模板的覆盖面积小于所述第一阈值,则显示第一提示信息,所述第一提示信息用于提示所述用户指纹中尚未被所述候选指纹模板覆盖的区域;令i=i+1,再次执行所述获取指纹识别传感器采集到的第i张指纹图像的步骤。
- 根据权利要求1所述的方法,其中,所述预定条件包括所述候选指纹模板中的特征点个数大于所述第二阈值;所述方法,还包括:若所述候选指纹模板中的特征点个数小于所述第二阈值,则显示第二提示信息,所述第二提示信息用于提示所述候选指纹模板中的特征点个数小于第三阈值的区域,所述第二阈值大于所述第三阈值;令i=i+1,再次执行所述获取指纹识别传感器采集到的第i张指纹图 像的步骤。
- 根据权利要求3所述的方法,其中,所述显示第二提示信息,包括:检测所述候选指纹模板是否完全覆盖所述用户指纹;若所述候选指纹模板完全覆盖所述用户指纹,则显示所述第二提示信息。
- 根据权利要求4所述的方法,其中,所述方法,还包括:若所述候选指纹模板尚未完全覆盖所述用户指纹,则显示第三提示信息,所述第三提示信息用于提示所述用户指纹中尚未被所述候选指纹模板覆盖的区域。
- 根据权利要求2至5任一所述的方法,其中,所述方法还包括:检测所述指纹识别传感器采集所述指纹图像的次数是否达到预定次数;若所述指纹识别传感器采集所述指纹图像的次数达到所述预定次数,则显示本次指纹模板录入失败的提示信息。
- 一种指纹模板录入装置,包括:指纹获取模块,被配置为获取指纹识别传感器采集到的第i张指纹图像,i为正整数;模板候选模块,被配置为根据已经获取到的全部i张所述指纹图像得到候选指纹模板;模板检测模块,被配置为检测所述候选指纹模板是否满足预定条件,所述预定条件包括所述候选指纹模板的覆盖面积大于第一阈值和所述候选指纹模板中的特征点个数大于第二阈值中的至少一种,所述覆盖面积是对用户指纹的覆盖面积;模板录入模块,被配置为在所述候选指纹模板满足所述预定条件时, 将所述候选指纹模板录入为所述用户指纹的指纹模板。
- 根据权利要求7所述的装置,其中,所述预定条件包括所述候选指纹模板的覆盖面积大于所述第一阈值;所述装置,还包括:第一显示模块,被配置为在所述候选指纹模板的覆盖面积小于所述第一阈值时,显示第一提示信息,所述第一提示信息用于提示所述用户指纹中尚未被所述候选指纹模板覆盖的区域;第一执行模块,被配置为令i=i+1,再次执行所述获取指纹识别传感器采集到的第i张指纹图像的步骤。
- 根据权利要求7所述的装置,其中,所述预定条件包括所述候选指纹模板中的特征点个数大于所述第二阈值;所述装置,还包括:第二显示模块,被配置为在所述候选指纹模板中的特征点个数小于所述第二阈值时,显示第二提示信息,所述第二提示信息用于提示所述候选指纹模板中的特征点个数小于第三阈值的区域,所述第二阈值大于所述第三阈值;第二执行模块,被配置为令i=i+1,再次执行所述获取指纹识别传感器采集到的第i张指纹图像的步骤。
- 根据权利要求9所述的装置,其中,所述第二显示模块,包括:第一检测子模块,被配置为检测所述候选指纹模板是否完全覆盖所述用户指纹;第一提示子模块,被配置为在所述候选指纹模板完全覆盖所述用户指纹时,显示所述第二提示信息。
- 根据权利要求9所述的装置,其中,所述装置,还包括:第三显示模块,被配置为在所述候选指纹模板尚未完全覆盖所述用 户指纹时,显示第三提示信息,所述第三提示信息用于提示所述用户指纹中尚未被所述候选指纹模板覆盖的区域。
- 根据权利要求8至11任一所述的装置,其中,所述装置还包括:次数检测模块,被配置为检测所述指纹识别传感器采集所述指纹图像的次数是否达到预定次数;失败显示模块,被配置为在所述指纹识别传感器采集所述指纹图像的次数达到所述预定次数时,显示本次指纹模板录入失败的提示信息。
- 一种指纹模板录入装置,包括:处理器;配置为存储所述处理器可执行指令的存储器;其中,所述处理器被配置为:获取指纹识别传感器采集到的第i张指纹图像,i为正整数;根据已经获取到的全部i张所述指纹图像得到候选指纹模板;检测所述候选指纹模板是否满足预定条件,所述预定条件包括所述候选指纹模板的覆盖面积大于第一阈值和所述候选指纹模板中的特征点个数大于第二阈值中的至少一种,所述覆盖面积是对用户指纹的覆盖面积;若所述候选指纹模板满足所述预定条件,则将所述候选指纹模板录入为所述用户指纹的指纹模板。
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US20170220846A1 (en) | 2017-08-03 |
CN107025419B (zh) | 2020-11-10 |
US10452890B2 (en) | 2019-10-22 |
EP3200125A1 (en) | 2017-08-02 |
CN107025419A (zh) | 2017-08-08 |
EP3200125B1 (en) | 2021-02-24 |
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