CN105468200A - Method and device for fingerprint touch control and fingerprint equipment - Google Patents

Method and device for fingerprint touch control and fingerprint equipment Download PDF

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Publication number
CN105468200A
CN105468200A CN201610005596.3A CN201610005596A CN105468200A CN 105468200 A CN105468200 A CN 105468200A CN 201610005596 A CN201610005596 A CN 201610005596A CN 105468200 A CN105468200 A CN 105468200A
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fingerprint image
end points
centre coordinate
horizontal
vertical
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CN105468200B (en
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周奇
郑腾交
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Yibin Bond China Smart Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Collating Specific Patterns (AREA)
  • Image Input (AREA)

Abstract

The invention belongs to the technical field of touch control and provides a method and device for fingerprint touch control and fingerprint equipment. The method includes the steps that a first fingerprint image and a second fingerprint image are acquired; the center coordinates of the first fingerprint image and the center coordinates of the second fingerprint image are calculated; corresponding touch control operation is executed according to the difference value between the center coordinates of the first fingerprint image and the center coordinates of the second fingerprint image. Only the center coordinates of the two acquired fingerprint images need to be calculated, the corresponding touch control operation is executed according to the difference value between the center coordinates of the two fingerprint images, the calculated quantity is only on the level N, the method is simple, consumed time is short, and the good operation real-time effect is achieved.

Description

A kind of method of fingerprint touch-control, device and fingerprint equipment
Technical field
The invention belongs to technical field of touch control, particularly relate to a kind of method of fingerprint touch-control, device and fingerprint equipment.
Background technology
Along with the development of fingerprint equipment, fingerprint equipment software engineering, the application of fingerprint equipment in routine work life is more and more extensive.
When finger manipulation fingerprint equipment, the display page on fingerprint equipment can carry out page turning according to the mobile size of finger and moving direction, the slide such as above to move, move down.
The method of existing fingerprint touch-control, first be recorded in the whole process of touch action, user's finger is from touching fingerprint equipment until N number of finger print information that when leaving fingerprint equipment after moving to certain Distance geometry direction, user points, gather the fingerprint feature point of each finger print information again, then the size and Orientation indicated according to the displacement of each fingerprint feature point of N is determined to carry out left page turning, right page turning to display page, the slide such as to move, move down on still carrying out.
Significantly, the method for existing fingerprint touch-control is the coupling of being carried out touch-control action by the unique point of the image that takes the fingerprint.If extract feature for the fingerprint image of a width N*N size, its calculated amount is all N usually 2level, matching primitives amount is N 2to N 4level (as information entropy, fusion feature etc.), calculation of complex, and calculated amount is large, cause length consuming time, slip low-response, live effect is poor.
Summary of the invention
Embodiments provide a kind of method of fingerprint touch-control, device and fingerprint equipment, be intended to the method solving the fingerprint touch-control that prior art provides, calculation of complex, and calculated amount is large, causes length consuming time, slip low-response, the problem of live effect difference.
On the one hand, a kind of method of fingerprint touch-control is provided, comprises:
Obtain the first fingerprint image and the second fingerprint image;
Calculate the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image;
Corresponding touch control operation is performed according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
Further, the described centre coordinate of calculating first fingerprint image and the centre coordinate of the second fingerprint image, comprising:
Obtain the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculate the centre coordinate of described first fingerprint image by described two horizontal end points and two vertical end points;
Obtain the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculate the centre coordinate of described second fingerprint image by described two horizontal end points and two vertical end points.
Further, the step of two vertical end points of described acquisition first fingerprint image two horizontal end points in the horizontal direction and vertical direction comprises:
First fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the first fingerprint image, the end points at the two ends of the horizontal projection curve of described first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of described first fingerprint image is described two vertical end points of the first fingerprint image;
Second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of described second fingerprint image is the described two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of described second fingerprint image is described two vertical end points of the second fingerprint image.
Further, described horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtain f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image;
Described vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image;
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents fingerprint image jth row, the gray-scale value of i row.
Further, if the horizontal direction coordinate of two of the first fingerprint image horizontal end points is X min_1and X max_1, the vertical direction coordinate of two vertical end points of the first fingerprint image is Y min_1and Y max_1, by the centre coordinate (X of following formulae discovery first fingerprint image p1, Y p1):
X p1＝(X max_1+X min_1)/2；
Y p1＝(Y max_1+Y min_1)/2；
If two of the second fingerprint image horizontal end points are X min_nand X max_n, two vertical end points of the second fingerprint image are Y min_nand Y max_n, by the centre coordinate (X of following formulae discovery first fingerprint image pn, Y pn):
X pn＝(X max_n+X min_n)/2；
Y pn＝(Y max_n+Y min_n)/2。
Further, the difference between the centre coordinate of the described centre coordinate according to the first fingerprint image and the second fingerprint image performs corresponding touch control operation, comprising:
If (X pn-X p1) >X f, and | (Y pn-Y p1) | <Y s, then first direction page turn over operation is performed;
If (X pn-X p1) <-X f, and | (Y pn-Y p1) | <Y s, then second direction page turn over operation is performed;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, X fdefault page turning threshold value, Y slimit threshold value.
Further, while described acquisition first fingerprint image and the second fingerprint image, also comprise:
Obtain mistiming t when collection first fingerprint image and the second fingerprint image;
Difference between the centre coordinate of the described centre coordinate according to the first fingerprint image and the second fingerprint image performs corresponding touch control operation, also comprises:
According to (X pn-X p1) * M/m, (Y pn-Y p1) * N/n and described mistiming t performs corresponding slide;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, the resolution that the resolution that M*N is touch-screen, m*n are fingerprint images.
On the other hand, provide a kind of device of fingerprint touch-control, the device of described fingerprint touch-control comprises:
Fingerprint image acquisition module, for obtaining the first fingerprint image and the second fingerprint image;
Centre coordinate computing module, for the centre coordinate of the centre coordinate and the second fingerprint image that calculate the first fingerprint image;
Contact control module, for performing corresponding touch control operation according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
Further, described centre coordinate computing module comprises:
First centre coordinate computing unit, for obtaining the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described first fingerprint image by described two horizontal end points and numerical quantity end points;
Second centre coordinate computing unit, for obtaining the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described second fingerprint image by described two horizontal end points and two vertical end points.
Further, described first centre coordinate computing unit comprises:
First centre coordinate computation subunit, for the first fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the first fingerprint image, the end points at the two ends of the horizontal projection curve of described first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of described first fingerprint image is described two vertical end points of the first fingerprint image;
Described second centre coordinate computing unit comprises:
Second centre coordinate computation subunit, for the second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of described second fingerprint image is the described two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of described second fingerprint image is described two vertical end points of the second fingerprint image.
Further, described horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtain f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image;
Described vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image;
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents fingerprint image jth row, the gray-scale value of i row.
Further, if the horizontal direction coordinate of two of the first fingerprint image horizontal end points is X min_1and X max_1, the vertical direction coordinate of two vertical end points of the first fingerprint image is Y min_1and Y max_1, described first centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image p1, Y p1):
X p1＝(X max_1+X min_1)/2；
Y p1＝(Y max_1+Y min_1)/2；
If two of the second fingerprint image horizontal end points are X min_nand X max_n, two vertical end points of the second fingerprint image are Y min_nand Y max_n, described second centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image pn, Y pn):
X pn＝(X max_n+X min_n)/2；
Y pn＝(Y max_n+Y min_n)/2。
Further, described contact control module comprises:
First page turning control module, if for (X pn-X p1) >X f, and | (Y pn-Y p1) | <Y s, then first direction page turn over operation is performed;
Second page turning control module, if for (X pn-X p1) <-X f, and | (Y pn-Y p1) | <Y s, then second direction page turn over operation is performed;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, X fdefault page turning threshold value, Y slimit threshold value.
Further, described device also comprises:
Mistiming acquisition module, for obtaining mistiming t when collection first fingerprint image and the second fingerprint image;
Described contact control module, also comprises:
Slip control module, for basis (X pn-X p1) * M/m, (Y pn-Y p1) * N/n and described mistiming t performs corresponding slide;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, the resolution that the resolution that M*N is touch-screen, m*n are fingerprint images.
Again on the one hand, provide a kind of fingerprint equipment, described fingerprint equipment comprises the device of fingerprint touch-control as above.
In the embodiment of the present invention, after getting the first fingerprint image and the second fingerprint image, calculate the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image, perform corresponding touch control operation according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.Whole process only needs the centre coordinate calculating the two width fingerprint images collected, and touch control operation that the page that fingerprint equipment shows is carried out is determined according to the difference between the centre coordinate of two width fingerprint images, its calculated amount is N level only, and method is simple, consuming time few, operation live effect is good.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the method for the fingerprint touch-control that the embodiment of the present invention one provides;
Fig. 2 is in the method for the fingerprint touch-control that the embodiment of the present invention one provides, the first fingerprint image collected and the schematic diagram of the second fingerprint image;
Fig. 3 is in the method for the fingerprint touch-control that the embodiment of the present invention one provides, and the first fingerprint image carries out the schematic diagram of the drop shadow curve that horizontal projection and vertical projection obtain;
Fig. 4 is the structured flowchart of the device of the fingerprint touch-control that the embodiment of the present invention two provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In embodiments of the present invention, obtain the first fingerprint image and the second fingerprint image, described first fingerprint image is the first width fingerprint image detecting that finger collects when there is touch action on fingerprint equipment, described second fingerprint image be detect finger unclamp or motionless time the fingerprint image that collects; Calculate the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image; Corresponding touch control operation is performed according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
Below in conjunction with specific embodiment, realization of the present invention is described in detail:
Embodiment one
Fig. 1 shows the realization flow of the method for the fingerprint touch-control that the embodiment of the present invention one provides, and details are as follows:
In step S101, obtain the first fingerprint image and the second fingerprint image.
In embodiments of the present invention, fingerprint recognition chip is built-in with in the device of fingerprint touch-control, when there is touch action to finger on fingerprint equipment in fingerprint recognition chip detection, fingerprint image can be gathered, the frequency gathered is determined by the sweep frequency of equipment, first fingerprint image and the second fingerprint image can be the adjacent images collected for twice, also can be the image selected by certain demand, such as, every two adjacent odd-times from first time scan the image obtained and are the first fingerprint image and the second fingerprint image etc., concrete difference as required can adopt different rules.
Can record the first fingerprint image is P 1, the second fingerprint image is P n.Left and right two width image in Fig. 2 is the first fingerprint image P collected respectively 1with the second fingerprint image P n.
Wherein, the resolution of the fingerprint image that fingerprint recognition chip collects is m*n, and the resolution of the touch-screen of fingerprint equipment is M*N, if the fingerprint image lower left corner is initial point.
In step s 102, the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image is calculated.
In embodiments of the present invention, after the device of fingerprint touch-control collects the first fingerprint image and the second fingerprint image, real-time analysis can be carried out to described first fingerprint image and described second fingerprint image, obtain the centre coordinate of the first fingerprint image and the second fingerprint image.
Concrete, the centre coordinate (X of the first fingerprint image can be obtained by following steps p1, Y p1) and the centre coordinate (X of the second fingerprint image pn, Y pn):
Step 1, obtain the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and the centre coordinate of described first fingerprint image is calculated by described two horizontal end points and two vertical end points, wherein two horizontal end points refer to fingerprint image two points that coordinate figure is minimum and maximum in the X-axis direction, and two vertical end points refer to fingerprint image two points that coordinate figure is minimum and maximum in the Y-axis direction.
Concrete, first fingerprint image is carried out horizontal projection and vertical projection, obtain the first fingerprint image horizontal projection curve and vertical projection curve, wherein, the end points at the two ends of the horizontal projection curve of the first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of the first fingerprint image is two vertical end points of the first fingerprint image.
Wherein, horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtain f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image, wherein refer to direction descending on Y-axis coordinate from top to bottom.
Concrete formula: f ( x i ) = &Sigma; j = 1 n f ( x i , y j ) .
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents the jth row of fingerprint image, the gray-scale value of i row.
Such as, the resolution of fingerprint image is 10*10, if f (1,1)=10, f (1,2)=10, f (1,3)=10, f (Isosorbide-5-Nitrae)=10, f (1,5)=10, f (1,6)=10, f (1,7)=10, f (1,8)=10, f (1,9)=10, f (1,10)=10, f (2,1)=15, f (2,2)=15, f (2,3)=15, f (2,4)=15, f (2,5)=50, f (2,6)=15, f (2,7)=15, f (2,8)=15, f (2,9)=15, f (2,10)=15, f (3,1)=30, f (3,2)=30, f (3,3)=30, f (3,4)=30, f (3,5)=30, f (3,6)=30, f (3,7)=30, f (3,8)=30, f (3,9)=30, f (3,10)=40, f (4,1)=40, f (4,2)=30, f (4,3)=30, f (4,4)=30, f (4,5)=50, f (4,6)=60, f (4,7)=70, f (4,8)=80, f (4,9)=60, f (4,10)=70, f (5,1)=35, f (5,2)=30, f (5,3)=40, f (5,4)=70, f (5,5)=60, f (5,6)=50, f (5,7)=80, f (5,8)=110, f (5,9)=50, f (5,10)=60, f (6,1)=50, f (6,2)=30, f (6,3)=70, f (6,4)=90, f (6,5)=80, f (6,6)=40, f (6,7)=60, f (6,8)=90, f (6,9)=90, f (6,10)=50, f (7,1)=40, f (7,2)=20, f (7,3)=80, f (7,4)=70, f (7,5)=90, f (7,6)=50, f (7,7)=40, f (7,8)=50, f (7,9)=60, f (7,10)=80, f (8,1)=10, f (8,2)=10, f (8,3)=5, f (8,4)=10, f (8,5)=20, f (8,6)=10, f (8,7)=20, f (8,8)=20, f (8,9)=20, f (8,10)=10, f (9,1)=20, f (9,2)=20, f (9,3)=20, f (9,4)=10, f (9,5)=10, f (9,6)=10, f (9,7)=10, f (9,8)=10, f (9,9)=10, f (9,10)=15, f (10, 1)=5, f (10, 2)=20, f (10, 3)=10, f (10, 4)=10, f (10, 5)=10, f (10, 6)=10, f (10, 7)=10, f (10, 8)=10, f (10, 9)=10, f (10, 10)=8, if predetermined first threshold is 300, then f (x=1) the i.e. gray-scale value sum of the 1st row is less than 300, in addition, 2nd row, 8th row, 9th row, the gray-scale value sum of the 10th row is also less than 300, can think that the 1st arranges, 2nd row, 8th row, 9th row, 10th row are not the row at fingerprint image place, and f (2, 5) near=50 this point, the gray scale of other point is all very low, visible f (2, 5)=50 is obvious noises, by the mode f (2 of this projection superposition, 5)=50 these noises are excluded, the gray-scale value sum of these row is not shown at corresponding horizontal direction coordinate, and the gray-scale value sum that f (x=3) to f (x=7) arranges all is greater than 300, so the relevant position of coordinate x=3 to x=7 shows the gray-scale value sum of each row in the horizontal direction, obtain the horizontal projection curve of fingerprint image, wherein, horizontal direction coordinate x=3 and x=7 is the horizontal direction coordinate at horizontal projection curve two ends.
Wherein, can as shown in Fig. 3 left side according to the horizontal projection curve that f (xi) draws, the horizontal projection curve according to such as Fig. 3 left side can get the horizontal direction coordinate X at the horizontal projection curve two ends of the first fingerprint image min_1and X max_1.
Vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image, wherein refer to direction from small to large on X-axis coordinate from left to right.
Concrete formula: f ( y j ) = &Sigma; i = 1 m f ( x i , y j ) .
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents the jth row of fingerprint image, the gray-scale value of i row.
Generate the method for vertical projection curve, substantially identical with the method generating horizontal projection curve, no longer illustrate at this and repeat.
The vertical projection curve drawn according to f (yj) can as shown in Fig. 3 right side, and the vertical projection curve according to such as Fig. 3 right side can the vertical direction coordinate Y at vertical projection curve two ends of the first fingerprint image min_1and Y max_1.
Above-mentioned horizontal projection and vertical projection obtain the method at fingerprint image edge, after same a line or all gray-scale value of same row are added, that a line or that row that exceed predetermined threshold can leave subpoint on ordinate or horizontal ordinate, general noise spot, because the row at noise spot place or row only have oneself pixel, so the gray scale of full line or permutation and can be very low, lower than predetermined threshold, then subpoint can not be left on ordinate or horizontal ordinate.Compare the method obtaining fingerprint image edge according to the bianry image of fingerprint image, because bianry image only has 0 and 1 two value; direct value can equal minimum and maximum two of X-coordinate in the point of 1 when getting edge; the non-fingerprint image part adding noise can be identified as 1, thus to be mistakenly identified as be fingerprint image.So the method being asked for fingerprint image edge by horizontal projection and vertical projection of the embodiment of the present invention, does not need the step arranging denoising point effectively can remove noise, and the edge coordinate obtained is more accurate.
In other embodiments, the mode obtaining two vertical end points of the first fingerprint image two horizontal end points in the horizontal direction and vertical direction can change as required, such as do not ask for horizontal projection curve and vertical projection curve directly adopts way mentioned above to find end points, or directly adopt 2 value images, from 2 value images, directly read end points etc.
Step 2, obtain the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and the centre coordinate of described second fingerprint image is calculated by described two horizontal end points and two vertical end points, wherein two horizontal end points refer to fingerprint image two points that coordinate figure is minimum and maximum in the X-axis direction, and two vertical end points refer to fingerprint image two points that coordinate figure is minimum and maximum in the Y-axis direction.
Concrete, second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of the second fingerprint image is two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of the second fingerprint image is two vertical end points of the second fingerprint image.
This step is identical with the method for the two vertical end points calculating the first fingerprint image two horizontal end points in the horizontal direction and vertical direction in step 1, does not repeat them here.
Step 3, by two horizontal end points of the first fingerprint image and two vertical end points, calculate the centre coordinate (X of the first fingerprint image p1, Y p1).
If the horizontal direction coordinate being obtained two horizontal end points of the first fingerprint image by the method described in step 1 is X min_1and X max_1, the vertical direction coordinate of two vertical end points is Y max_1and Y min_1, then centre coordinate (the X of the first fingerprint image can be obtained by following formulae discovery p1, Y p1):
X p1＝(X max_1+X min_1)/2,Y p1＝(Y max_1+Y min_1)/2。
Step 4, by two horizontal end points of the second fingerprint image and two vertical end points, calculate the centre coordinate (X of the second fingerprint image pn, Y pn).
If the two horizontal end points being obtained the second fingerprint image by the method described in step 2 are X min_nand X max_n, two vertical end points of the second fingerprint image are Y max_nand Y min_n, then centre coordinate (the X of the first fingerprint image can be obtained by following formulae discovery pn, Y pn):
X pn＝(X max_n+X min_n)/2,Y pn＝(Y max_n+Y min_n)/2。
In step s 103, corresponding touch control operation is performed according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
In embodiments of the present invention, the centre coordinate calculating the first fingerprint image by step S102 is (X p1, Y p1), the centre coordinate of the second fingerprint image is (X pn, Y pn).
When difference between the centre coordinate and the centre coordinate of the second fingerprint image of the first fingerprint image meets following formula, first direction page turn over operation can be performed:
(X pn-X p1)>X f,|(Y pn-Y p1)|<Y s。
When difference between the centre coordinate and the centre coordinate of the second fingerprint image of the first fingerprint image meets following formula, second direction page turn over operation can be performed:
(X pn-X p1)<-X f,|(Y pn-Y p1)|<Y s。
Wherein, first direction is left direction, when left direction refers to that fingerprint equipment is held in user front, and the direction of user left-hand side; Second direction is right direction, when right direction refers to that fingerprint equipment is held in user front, and the dexter direction of user.
In addition, after calculating the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image, (X can also be calculated pn-X p1) * M/m, (Y pn-Y p1) * N/n and sliding time difference t perform corresponding slide.Concrete, the software interface of response of above-mentioned three value transmit can being slided to system, similar to touch-screen TP slide effect to realize.
Wherein, the effect of M, N is amplified on touch-screen by the part of finger touch in proportion, and sliding time difference t is used for controlling the speed of sliding speed.
Wherein, while acquisition first fingerprint image and the second fingerprint image, mistiming t when collection first fingerprint image and the second fingerprint image can be obtained.Concrete, the time t2 when time t1 and the second fingerprint image that collect the first fingerprint image can be recorded, mistiming t=t2-t1.
The present embodiment, after getting the first fingerprint image and the second fingerprint image, calculate the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image, perform corresponding touch control operation according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.Whole process only needs the centre coordinate calculating the two width fingerprint images collected, and performs corresponding touch control operation according to the difference between the centre coordinate of two width fingerprint images, and its calculated amount is N level only, and method is simple, consuming time few, and operation live effect is good.
Should be understood that in embodiments of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.
One of ordinary skill in the art will appreciate that all or part of step realized in the various embodiments described above method is that the hardware that can carry out instruction relevant by program has come, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
Embodiment two
Fig. 4 shows the concrete structure block diagram of the device of the fingerprint touch-control that the embodiment of the present invention two provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.The device 4 of this fingerprint touch-control can be the unit of the software unit be built in fingerprint equipment, hardware cell or software and hardware combining.The device 4 of this fingerprint touch-control comprises: fingerprint image acquisition module 41, centre coordinate computing module 42 and contact control module 43.
Wherein, fingerprint image acquisition module 41, for obtaining the first fingerprint image and the second fingerprint image;
Centre coordinate computing module 42, for the centre coordinate of the centre coordinate and the second fingerprint image that calculate the first fingerprint image;
Contact control module 43, for performing corresponding touch control operation according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
Concrete, described centre coordinate computing module 42 comprises:
First centre coordinate computing unit, for obtaining the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described first fingerprint image by described two horizontal end points and two vertical end points;
Second centre coordinate computing unit, for obtaining the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described second fingerprint image by described two horizontal end points and two vertical end points.
Concrete, described first centre coordinate computing unit comprises:
First centre coordinate computation subunit, for the first fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the first fingerprint image, the end points at the two ends of the horizontal projection curve of described first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of described first fingerprint image is described two vertical end points of the first fingerprint image;
Described second centre coordinate computing unit comprises:
Second centre coordinate computation subunit, for the second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of described second fingerprint image is the described two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of described second fingerprint image is described two vertical end points of the second fingerprint image.
Concrete, described horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtain f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image;
Described vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image;
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents fingerprint image jth row, the gray-scale value of i row.
Concrete, if the horizontal direction coordinate of two of the first fingerprint image horizontal end points is X min_1and X max_1, the vertical direction coordinate of two vertical end points of the first fingerprint image is Y min_1and Y max_1, described first centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image p1, Y p1):
X p1＝(X max_1+X min_1)/2；
Y p1＝(Y max_1+Y min_1)/2；
If the horizontal direction coordinate of two of the second fingerprint image horizontal end points is X min_nand X max_n, the vertical direction coordinate of two vertical end points of the second fingerprint image is Y min_nand Y max_n, described second centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image pn, Y pn):
X pn＝(X max_n+X min_n)/2；
Y pn＝(Y max_n+Y min_n)/2。
Concrete, described contact control module 43 comprises:
First page turning control module, if for (X pn-X p1) >X f, and | (Y pn-Y p1) | <Y s, then first direction page turn over operation is performed;
Second page turning control module, if for (X pn-X p1) <-X f, and | (Y pn-Y p1) | <Y s, then second direction page turn over operation is performed;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, X fdefault page turning threshold value, Y slimit threshold value.
Further, described device 4 also comprises:
Mistiming acquisition module, for obtaining mistiming t when collection first fingerprint image and the second fingerprint image;
Described contact control module 43, also comprises:
Slip control module, for basis (X pn-X p1) * M/m, (Y pn-Y p1) * N/n and described mistiming t performs corresponding slide;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, the resolution that the resolution that M*N is touch-screen, m*n are fingerprint images.Wherein, the effect of M, N is amplified on touch-screen by the part of finger touch in proportion, and sliding time difference t is used for controlling the speed of sliding speed.
The device of the fingerprint touch-control that the embodiment of the present invention provides can be applied in the embodiment of the method one of aforementioned correspondence, and details, see the description of above-described embodiment one, do not repeat them here.
It should be noted that in said apparatus embodiment, included unit is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (15)

1. a method for fingerprint touch-control, is characterized in that, described method comprises:
Obtain the first fingerprint image and the second fingerprint image;
Calculate the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image;
Corresponding touch control operation is performed according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
2. the method for claim 1, is characterized in that, the described centre coordinate of calculating first fingerprint image and the centre coordinate of the second fingerprint image, comprising:
Obtain the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculate the centre coordinate of described first fingerprint image by described two horizontal end points and two vertical end points;
Obtain the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculate the centre coordinate of described second fingerprint image by described two horizontal end points and two vertical end points.
3. method as claimed in claim 2, is characterized in that, the step of two vertical end points of described acquisition first fingerprint image two horizontal end points in the horizontal direction and vertical direction comprises:
First fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the first fingerprint image, the end points at the two ends of the horizontal projection curve of described first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of described first fingerprint image is described two vertical end points of the first fingerprint image;
Second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of described second fingerprint image is the described two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of described second fingerprint image is described two vertical end points of the second fingerprint image.
4. method as claimed in claim 3, it is characterized in that, described horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtains f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image;
Described vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image;
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents fingerprint image jth row, the gray-scale value of i row.
5. method as claimed in claim 4, is characterized in that, if the horizontal direction coordinate of two of the first fingerprint image horizontal end points is X min_1and X max_1, the vertical direction coordinate of two vertical end points of the first fingerprint image is Y min_1and Y max_1, by the centre coordinate (X of following formulae discovery first fingerprint image p1, Y p1):
X p1＝(X max_1+X min_1)/2；
Y p1＝(Y max_1+Y min_1)/2；
If the horizontal direction coordinate of two of the second fingerprint image horizontal end points is X min_nand X max_n, the vertical direction coordinate of two vertical end points of the second fingerprint image is Y min_nand Y max_n, by the centre coordinate (X of following formulae discovery first fingerprint image pn, Y pn):
X pn＝(X max_n+X min_n)/2；
Y pn＝(Y max_n+Y min_n)/2。
6. the method as described in any one of claim 1-5, is characterized in that, the difference between the centre coordinate of the described centre coordinate according to the first fingerprint image and the second fingerprint image performs corresponding touch control operation, comprising:
If (X pn-X p1) >X f, and | (Y pn-Y p1) | <Y s, then first direction page turn over operation is performed;
If (X pn-X p1) <-X f, and | (Y pn-Y p1) | <Y s, then second direction page turn over operation is performed;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, X fdefault page turning threshold value, Y slimit threshold value.
7. the method as described in any one of claim 1-5, is characterized in that, while described acquisition first fingerprint image and the second fingerprint image, also comprises:
Obtain mistiming t when collection first fingerprint image and the second fingerprint image;
Difference between the centre coordinate of the described centre coordinate according to the first fingerprint image and the second fingerprint image performs corresponding touch control operation, also comprises:
According to (X pn-X p1) * M/m, (Y pn-Y p1) * N/n and described mistiming t performs corresponding slide;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, the resolution that the resolution that M*N is touch-screen, m*n are fingerprint images.
8. a device for fingerprint touch-control, is characterized in that, the device of described fingerprint touch-control comprises:
Fingerprint image acquisition module, for obtaining the first fingerprint image and the second fingerprint image;
Centre coordinate computing module, for the centre coordinate of the centre coordinate and the second fingerprint image that calculate the first fingerprint image;
Contact control module, for performing corresponding touch control operation according to the difference between the centre coordinate of the first fingerprint image and the centre coordinate of the second fingerprint image.
9. device as claimed in claim 8, it is characterized in that, described centre coordinate computing module comprises:
First centre coordinate computing unit, for obtaining the first fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described first fingerprint image by described two horizontal end points and two vertical end points;
Second centre coordinate computing unit, for obtaining the second fingerprint image two horizontal end points in the horizontal direction and two vertical end points of vertical direction, and calculates the centre coordinate of described second fingerprint image by described two horizontal end points and two vertical end points.
10. device as claimed in claim 9, it is characterized in that, described first centre coordinate computing unit comprises:
First centre coordinate computation subunit, for the first fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the first fingerprint image, the end points at the two ends of the horizontal projection curve of described first fingerprint image is the described two horizontal end points of the first fingerprint image, and the end points at the two ends of the vertical projection curve of described first fingerprint image is described two vertical end points of the first fingerprint image;
Described second centre coordinate computing unit comprises:
Second centre coordinate computation subunit, for the second fingerprint image is carried out horizontal projection and vertical projection, obtain horizontal projection curve and the vertical projection curve of the second fingerprint image, the end points at the two ends of the horizontal projection curve of described second fingerprint image is the described two horizontal end points of the second fingerprint image, and the end points at the two ends of the vertical projection curve of described second fingerprint image is described two vertical end points of the second fingerprint image.
11. devices as claimed in claim 10, it is characterized in that, described horizontal projection is from top to bottom to fingerprint image f (xi, yj) scan by column, each value arranged is added, obtains f (xi), if f (xi) is greater than predetermined first threshold, then on corresponding horizontal direction coordinate, show f (xi), generate the horizontal projection curve of fingerprint image;
Described vertical projection is from left to right to fingerprint image f (xi, yj) line by line scan, the value of every a line is added, obtain f (yj), if f (yj) is greater than predetermined Second Threshold, then on corresponding vertical direction coordinate, show f (yj), generate the vertical projection curve of fingerprint image;
Wherein, x is the horizontal ordinate of fingerprint image, and i represents the i-th row, and y represents the ordinate of fingerprint image, and j represents jth row, and f (xi, yj) represents fingerprint image jth row, the gray-scale value of i row.
12. devices as claimed in claim 11, is characterized in that, if the horizontal direction coordinate of two of the first fingerprint image horizontal end points is X min_1and X max_1, the vertical direction coordinate of two vertical end points of the first fingerprint image is Y min_1and Y max_1, described first centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image p1, Y p1):
X p1＝(X max_1+X min_1)/2；
Y p1＝(Y max_1+Y min_1)/2；
If the horizontal direction coordinate of two of the second fingerprint image horizontal end points is X min_nand X max_n, the vertical direction coordinate of two vertical end points of the second fingerprint image is Y min_nand Y max_n, described second centre coordinate acquiring unit is by the centre coordinate (X of following formulae discovery first fingerprint image pn, Y pn):
X pn＝(X max_n+X min_n)/2；
Y pn＝(Y max_n+Y min_n)/2。
13. devices as described in any one of claim 8-12, it is characterized in that, described contact control module comprises:
First page turning control module, if for (X pn-X p1) >X f, and | (Y pn-Y p1) | <Y s, then first direction page turn over operation is performed;
Second page turning control module, if for (X pn-X p1) <-X f, and | (Y pn-Y p1) | <Y s, then second direction page turn over operation is performed;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, X fdefault page turning threshold value, Y slimit threshold value.
14. devices as described in any one of claim 8-12, it is characterized in that, described device also comprises:
Mistiming acquisition module, for obtaining mistiming t when collection first fingerprint image and the second fingerprint image;
Described contact control module, also comprises:
Slip control module, for basis (X pn-X p1) * M/m, (Y pn-Y p1) * N/n and described mistiming t performs corresponding slide;
Wherein, (X p1, Y p1) be the centre coordinate of the first fingerprint image, (X pn, Y pn) be the centre coordinate of the second fingerprint image, the resolution that the resolution that M*N is touch-screen, m*n are fingerprint images.
15. 1 kinds of fingerprint equipments, is characterized in that, described fingerprint equipment comprises the device of the fingerprint touch-control as described in any one of claim 8 to 14.
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