CN102637252B - Calling card positioning method and device - Google Patents
Calling card positioning method and device Download PDFInfo
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- CN102637252B CN102637252B CN201110035933.0A CN201110035933A CN102637252B CN 102637252 B CN102637252 B CN 102637252B CN 201110035933 A CN201110035933 A CN 201110035933A CN 102637252 B CN102637252 B CN 102637252B
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Abstract
The embodiment of the invention discloses a calling card positioning method and device, which relate to the technical field of image processing, and are used for improving the speed and flexibility of calling card positioning in the process of obtaining images of calling cards. The method comprises the following steps: detecting an angular point of a calling card to be identified; carrying out matching on the detected angular point and a preset angular point labeled on a display screen of an intelligent terminal; if the distance between the detected angular point and the corresponding preset angular point is less than a preset value, taking the detected angular point as the actual angular point of the calling card to be identified, thereby obtaining the position of the calling card to be identified. According to the embodiment of the invention, the speed and flexibility of calling card positioning in the process of obtaining images of calling cards can be improved.
Description
Technical field
The present invention relates to technical field of image processing, relate in particular to a kind of name sheet positioning method and device.
Background technology
Business card recognition is the main application of of OCR (Optical Character Recognition, optical character identification) technology.It is mainly by scanning or takes the business card picture that obtains and identify, and information on the business card that identification is obtained adds in address book, to be user-friendly to.
In order to ensure the accuracy of business card recognition, the business card image photographing should be as far as possible clear, and business card should be put in position.In prior art, in the time that business card is identified, be mainly to carry out positioning name by the four edges of dynamic detection business card, to judge whether current business card is applicable to taking and providing user pointing out accordingly.But in the time that business card is not the ratio of 16:9 of standard, during as square, in the time taking the first half of business card or the latter half, or while taking perpendicular version business card, intelligent terminal may can't detect the four edges of business card, and in prior art, the algorithm of positioning name four edges is more complicated.Therefore, this has just caused the speed of name sheet positioning method of the prior art lower.
Summary of the invention
The embodiment of the present invention provides a kind of name sheet positioning method and device, the speed while obtaining business card image to improve, business card being positioned and adaptability.
The embodiment of the present invention adopts following technical scheme:
A kind of name sheet positioning method, comprising:
Detect the angle point of business card to be identified;
The angle point detecting is mated with four preset angle points that mark on intelligent terminal display screen;
If described in distance between the angle point and its corresponding preset angle point that detect be less than setting value, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of business card to be identified.
A kind of business card locating device, comprising:
Detecting unit, for detection of the angle point of business card to be identified;
Display unit, for showing preset angle point;
Matching unit, for mating the angle point detecting with four preset angle points of the business card recognition camera site of described display unit demonstration;
Positioning unit, while being less than setting value for the distance between the described angle point detecting and its corresponding preset angle point, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of business card to be identified.
Name sheet positioning method and the device of the embodiment of the present invention, detect the angle point of business card to be identified, and the angle point detecting mated with four preset angle points of the photographing business card optimum position marking on intelligent terminal display screen.Therefore, at business card in larger or irregular situation, still can detect the angle point of business card, thereby positioning name, prompting user takes, and the angle point of locating business card to be identified complexity compared to the limit of location business card to be identified is lower, speed is faster, therefore,, compared to name sheet positioning method of the prior art, name sheet positioning method and the device of the embodiment of the present invention can improve the speed and the adaptability that while obtaining business card image, business card are positioned.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of the name sheet positioning method of the embodiment of the present invention one;
Fig. 2 a is the gray level image of business card to be identified in the embodiment of the present invention one; Fig. 2 b is the schematic diagram of preset angle point in the embodiment of the present invention one; Fig. 2 c is the schematic diagram of the pixel on the edge extracting in the embodiment of the present invention one;
Fig. 3 a determines the schematic diagram when process intersection point of angle point to be identified does not overlap in the embodiment of the present invention one; Fig. 3 b be in the embodiment of the present invention one determine angle point to be identified process intersection point overlap time schematic diagram;
Fig. 4 is the schematic diagram of intelligent terminal while utilizing the method for the embodiment of the present invention to take the business card of having good positioning;
Fig. 5 is the schematic diagram of the embodiment of the present invention two business card locating devices;
Fig. 6 is the schematic diagram of detecting unit in the embodiment of the present invention two business card locating devices.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The speed while obtaining business card image for improving, business card being positioned, in embodiments of the present invention, first detects the angle point of business card to be identified, and the angle point detecting is mated with the preset angle point of business card marking on intelligent terminal display screen.If described in distance between the angle point and its corresponding preset angle point that detect be less than setting value, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of business card to be identified.
As seen from the above, according to the embodiment of the present invention, in larger or irregular situation, still can detect the angle point of business card at business card, thus positioning name, prompting user takes, and angle point complexity compared to the limit of location business card to be identified of locating business card to be identified is lower, speed is faster, therefore, compared to name sheet positioning method of the prior art, the name sheet positioning method of the embodiment of the present invention can improve the speed and the adaptability that while obtaining business card image, business card are positioned.
As shown in Figure 1, the name sheet positioning method of the embodiment of the present invention one comprises:
The angle of most of business card has certain feature, be 90 degree, and each angle has certain directivity.Therefore, this provides the foundation with regard to the angle point that detects business card to be identified for the embodiment of the present invention.
In this embodiment, this step comprises following process:
Step 111, utilize the camera of intelligent terminal to obtain the gray level image (as shown in Figure 2 a) of described business card to be identified, and on described gray level image, obtain respectively the rectangular area centered by four preset angle points of the photographing business card optimum position marking on intelligent terminal display screen.
Wherein, described photographing business card optimum position refers to can obtain good shooting effect time, business card should in position.Because business card is generally rectangle, so this optimum position can mark with four angle points, at this, described four angle points are called to preset angle point.
For example, in this embodiment, as shown in Figure 2 b, suppose that preset angle point is respectively p1, p2, p3, p4, it is respectively left upper apex, summit, lower-left, summit, upper right and summit, bottom right.Therefore, the direction of these four preset angle points can be described as respectively upper left, lower left, upper right and lower right.
In described gray level image, respectively with p1, p2, p3, centered by p4, determines corresponding rectangular area, wherein wide the and height of this rectangular area can arrange arbitrarily.For example, taking p1 point as example, the coordinate of supposing this point is (p1.x, p1.y), centered by this coordinate, in the coordinate system at this place, distinguish straight up and straight down in the horizontal direction translation len/2, in the vertical direction level left, level is distinguished translation len/2 to the right, therefore, the coordinate on four summits of this rectangular area is respectively (p1.x-len/2, p1.y+ len/2), (p1.x+len/2, p1.y+ len/2), (p1.x-len/2, p1.y-len/2), (p1.x+len/2, p1.y-len/2), wherein len represents the wide and high of rectangular area.For other preset angle point, the mode of determining rectangular area is identical with some p1's.And, suppose that in this embodiment the wide of each rectangular area is with high identical.Certainly, also can be different.
In following examples, be described as an example of a p1 example, the mode of operation of other preset angle points is identical.
And, can find out by the way, owing to being the angle point that the photographing business card optimum position that marks detects business card to be identified, therefore, can further improve recognition speed on intelligent terminal display screen.
Step 112, in described rectangular area, obtain the edge of described business card to be identified, and extract the pixel on described edge.
In rectangular area corresponding to a p1, utilize canny algorithm to extract the edge of business card to be identified in this rectangular area, and extract the pixel (as shown in Figure 2 c) on edge.At this, in an array buffer, record the coordinate of each pixel on this edge, and the half that is total number of pixel by the length of this array is designated as N.At this, suppose to have 50 of pixels, N=25.
Step 113, utilize described pixel to determine alternative angle point, and obtain the coincidence number of times of the alternative angle point that coincidence phenomenon occurs.
Concrete, in pixel from described edge, choose arbitrarily three pixels with pre-determined number, in three pixels at every turn choosing, for the line of the first pixel and the second pixel wherein, utilize the 3rd pixel to do vertical line to described line, if intersection point is positioned on the extended line of described line, using described intersection point as alternative angle point, and obtain coordinate and the direction of described alternative angle point.Wherein, described pre-determined number is N.
Taking N=25 as example, that is to say, in this embodiment, need to from 50 pixels, choose arbitrarily three pixels, then determine alternative angle point, and repeat this process 25 times.
As shown in Figure 3, suppose that three pixels choosing are for the first time respectively K, L, M, by every two somes line respectively.Using K as the first pixel, L is as the second pixel, and M is during as the 3rd pixel, from M point to a K and the line KL of some L do vertical line, as can be seen from Figure, intersection point B drops on the extended line of line KL.Therefore, can be using intersection point B as alternative angle point, and obtain coordinate and the direction of intersection point B.Wherein, the direction of described intersection point B refers to, in four right angles that formed by the extended line of vertical line MB and line KL, and the direction at the right angle relative with described line KL.In Fig. 2, can think that the direction at angle 1 is the direction of alternative angle point B, be approximately upper right, therefore, the preset angle point corresponding with intersection point B is p3.
Using M as the first pixel, L is as the second pixel, and K is during as the 3rd pixel, for the line of ML, from K point to a M and the line ML of some L do vertical line, as can be seen from Figure, intersection point A drops on the extended line of line ML.Therefore, can be using intersection point A as alternative angle point, and obtain coordinate and the direction of intersection point A.The mode of as described above, the direction that can determine intersection point A is lower right, the preset angle point corresponding with this alternative angle point is p4.
And using M as the first pixel, K is as the second pixel, L during as the 3rd pixel, for the line of MK, does vertical line from L point to line MK, and as can be seen from Figure, intersection point C drops on the line of line MC, thereby intersection point C not can be used as alternative angle point.
Repeat above-mentioned to a K, L, the operation that M carries out 25 times, the principle of each operation is identical, just the pixel of each operation may be different.After 25 operations, can determine multiple alternative angle points, and in these multiple alternative angle points, may there is the alternative angle point of multiple coincidences, that is to say that the alternative angle point of determining in each operation may be identical, as shown in Figure 3 b, at this, such alternative angle point is called to the alternative angle point that coincidence phenomenon occurs, meanwhile, obtains such alternative angle point the number of times overlapping occurs.
If it is consistent with the direction of the preset angle point in described rectangular area that the coincidence number of times of the alternative angle point of the described generation coincidence of step 114 phenomenon is greater than the direction of predetermined threshold value and described alternative angle point, using the alternative angle point of described generation coincidence phenomenon as angle point.
Wherein, described predetermined threshold value can arrange arbitrarily, for example, be set to N/3, and N is the i.e. half of total number of the pixel on the edge of business card to be identified in this rectangular area of length of array buffer.For example, the alternative angle point of supposing the generation coincidence phenomenon obtaining by step 112 is n1, coordinate <10,23>, coincidence number of times is 15, and its direction is upper left, and the coincidence number of times of therefore putting n1 is greater than N/3 8, and consistent with the direction of a p1, described can be using n1 as angle point.
Equally, in rectangular area for other preset angle points, can determine that in the manner described above angle point is respectively n2, n3, n4, coordinate is respectively n2<221,28>, n3<11,157>, n4<218,150>.
In this embodiment, be by a n1, n2, n3 and n4 respectively with a p1, p2, p3, p4 mates.
If the distance between the angle point detecting described in step 13 and its corresponding preset angle point is less than setting value, the actual angle point using the described angle point detecting as described business card to be identified.
Wherein, described setting value can be set to len/2, and wherein len is the wide or high of rectangular area that each preset angle point is corresponding, and in this embodiment, this setting value is 16.
For example, the coordinate of each preset angle point can be:
P1<8,20>, p2<217,22>, p3<8,154>, p4<217,154>, according to 2 range formulas, calculate respectively Dis (p1, n1)=3.6, Dis (p2, n2)=7.8, Dis (p3, n3)=4.2, Dis (p4, n4)=4.1.
This shows, above-mentioned distance is less than respectively setting value 16, therefore, some n1, n2, n3 and n4 can be used as the actual angle point of described business card to be identified.
For a n1, n2, n3 and n4, a prompting point p1 respectively, p2, p3, p4, for example, put p1 on the screen of intelligent terminal, p2, p3, position corresponding to p4 be with light tone stroboscopic, the suitable camera site of business card to be identified described in prompting user, as shown in Figure 4.
In this embodiment, be identify business card to be identified whole 4 actual angle points just by the position that on the screen of intelligent terminal, preset angle point is corresponding with light tone stroboscopic, but in actual applications, also can identify after any one actual angle point, just preset angle point corresponding to this actual angle point of light tone stroboscopic on the screen of intelligent terminal.
As seen from the above, according to the embodiment of the present invention, in larger or irregular situation, still can detect the angle point of business card at business card, thus positioning name, prompting user takes, and angle point complexity compared to the limit of location business card to be identified of locating business card to be identified is lower, speed is faster, therefore, compared to name sheet positioning method of the prior art, the name sheet positioning method of the embodiment of the present invention can improve the speed and the adaptability that while obtaining business card image, business card are positioned.
In addition, utilize the method for the embodiment of the present invention, in larger or irregular situation, still can detect the angle point of business card at business card, thus positioning name, prompting user takes, and therefore, the method applicability of the embodiment of the present invention is stronger.
As shown in Figure 5, the embodiment of the present invention two provides a kind of positioning and recognizing device, comprising:
Detecting unit 41, for detection of the angle point of business card to be identified; Display unit 42, for showing preset angle point; Matching unit 43, for mating the angle point detecting with the preset angle point of the photographing business card optimum position of described display unit demonstration; Positioning unit 44, while being less than setting value for the distance between the described angle point detecting and its corresponding preset angle point, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of business card to be identified.
Wherein, as shown in Figure 6, described detecting unit 41 can comprise: region acquisition module 411, for obtaining the gray level image of described business card to be identified, and on described gray level image, obtains respectively the rectangular area centered by described four preset angle points; Extraction module 412, in described rectangular area, obtains the edge of described business card to be identified, and extracts the pixel on described edge; Processing module 413, for utilizing the pixel on described edge to determine alternative angle point, and obtain the coincidence number of times that the alternative angle point of coincidence phenomenon occurs in described alternative angle point, and it is consistent to be greater than the direction of alternative angle point and the direction of preset angle point corresponding in described rectangular area of predetermined threshold value and described generation coincidence phenomenon at the coincidence number of times of the alternative angle point of described generation coincidence phenomenon, the angle point using the alternative angle point of described generation coincidence phenomenon as business card to be identified.
In concrete application, described processing module can comprise:
First processes submodule, choose arbitrarily three pixels for the pixel from described edge with pre-determined number, in three pixels at every turn choosing, for the line of the first pixel and the second pixel wherein, utilize the 3rd pixel to do vertical line to described line, if intersection point is positioned on the extended line of described line, using described intersection point as alternative angle point, and obtain coordinate and the direction of described alternative angle point; Wherein, described pre-determined number is the half of the total number of pixel on described edge;
Second processes submodule, when at every turn using described intersection point as alternative angle point, determines the alternative angle point that coincidence phenomenon occurs, and obtains the coincidence number of times of the alternative angle point of described generation coincidence phenomenon;
The 3rd processes submodule, consistent for be greater than the direction of alternative angle point and the direction of preset angle point corresponding in described rectangular area of predetermined threshold value and described generation coincidence phenomenon at the coincidence number of times of the alternative angle point of described generation coincidence phenomenon, the angle point using the alternative angle point of described generation coincidence phenomenon as business card to be identified.
The principle of work of described detecting unit 41 can be with reference to the description of preceding method embodiment.
In order to facilitate user to take business card to be identified, described display unit 42 also points out user to take for the mode that shows described preset angle point on the display screen of described intelligent terminal to flash.
As seen from the above, according to the embodiment of the present invention, in larger or irregular situation, still can detect the angle point of business card at business card, thus positioning name, prompting user takes, and angle point complexity compared to the limit of location business card to be identified of locating business card to be identified is lower, speed is faster, therefore, compared to name sheet positioning method of the prior art, the business card locating device of the embodiment of the present invention can improve the speed and the adaptability that while obtaining business card image, business card are positioned.
Wherein, the device shown in Fig. 5 or Fig. 6 can be arranged in intelligent terminal, such as mobile phone etc.
Certainly, the method and apparatus of the embodiment of the present invention can not only be confined to the application of positioning name, also can be applicable to any other to having in the location technology of object of the shape similar to business card, for example books.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (6)
1. a name sheet positioning method, is characterized in that, comprising:
Detect the angle point of business card to be identified;
The angle point detecting is mated with the preset angle point marking on intelligent terminal display screen;
If described in distance between the angle point and its corresponding preset angle point that detect be less than setting value, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of described business card to be identified;
Wherein, the angle point of described detection business card to be identified comprises:
Obtain the gray level image of described business card to be identified, and on described gray level image, obtain respectively the rectangular area centered by described preset angle point;
In described rectangular area, obtain the edge of described business card to be identified, and extract the pixel on described edge;
Utilize the pixel on described edge to determine alternative angle point, and obtain the coincidence number of times that the alternative angle point of coincidence phenomenon occurs in described alternative angle point;
If it is consistent that the coincidence number of times of the alternative angle point of described generation coincidence phenomenon is greater than the direction of alternative angle point and the direction of preset angle point corresponding in described rectangular area of predetermined threshold value and described generation coincidence phenomenon, the angle point using the alternative angle point of described generation coincidence phenomenon as business card to be identified;
Further, describedly utilize the pixel on described edge to determine alternative angle point, and obtain the coincidence number of times that the alternative angle point of coincidence phenomenon occurs in described alternative angle point and comprise:
In pixel from described edge, choose arbitrarily three pixels with pre-determined number, in three pixels at every turn choosing, for the line of the first pixel and the second pixel wherein, utilize the 3rd pixel to do vertical line to described line, if intersection point is positioned on the extended line of described line, using described intersection point as alternative angle point, and obtain coordinate and the direction of described alternative angle point; Wherein, described pre-determined number is the half of the total number of pixel on described edge;
During at every turn using described intersection point as alternative angle point, determine the alternative angle point that coincidence phenomenon occurs, and obtain the coincidence number of times of the alternative angle point of described generation coincidence phenomenon.
2. method according to claim 1, is characterized in that, described in obtain described alternative angle point direction be specially:
In four right angles that described vertical line and described extended line are formed, the direction at the right angle relative with described line is as the direction of described alternative angle point.
3. method according to claim 1 and 2, is characterized in that, described method also comprises:
The mode that shows described preset angle point to flash on the display screen of described intelligent terminal points out user to take.
4. a business card locating device, is characterized in that, comprising:
Detecting unit, for detection of the angle point of business card to be identified;
Display unit, for showing preset angle point;
Matching unit, for mating the angle point detecting with four preset angle points of the expression photographing business card optimum position of described display unit demonstration;
Positioning unit, while being less than setting value for the distance between the described angle point detecting and its corresponding preset angle point, the actual angle point using the described angle point detecting as described business card to be identified, thus obtain the position of business card to be identified;
Wherein, described detecting unit comprises:
Region acquisition module, for obtaining the gray level image of described business card to be identified, and on described gray level image, obtains respectively the rectangular area centered by described four preset angle points;
Extraction module, in described rectangular area, obtains the edge of described business card to be identified, and extracts the pixel on described edge;
Processing module, for utilizing the pixel on described edge to determine alternative angle point, and obtain the coincidence number of times that the alternative angle point of coincidence phenomenon occurs in described alternative angle point, and it is consistent to be greater than the direction of alternative angle point and the direction of preset angle point corresponding in described rectangular area of predetermined threshold value and described generation coincidence phenomenon at the coincidence number of times of the alternative angle point of described generation coincidence phenomenon, the angle point using the alternative angle point of described generation coincidence phenomenon as business card to be identified; Further, described processing module comprises:
First processes submodule, choose arbitrarily three pixels for the pixel from described edge with pre-determined number, in three pixels at every turn choosing, for the line of the first pixel and the second pixel wherein, utilize the 3rd pixel to do vertical line to described line, if intersection point is positioned on the extended line of described line, using described intersection point as alternative angle point, and obtain coordinate and the direction of described alternative angle point; Wherein, described pre-determined number is the half of the total number of pixel on described edge;
Second processes submodule, when at every turn using described intersection point as alternative angle point, determines the alternative angle point that coincidence phenomenon occurs, and obtains the coincidence number of times of the alternative angle point of described generation coincidence phenomenon;
The 3rd processes submodule, for being greater than the direction of alternative angle point of predetermined threshold value and described generation coincidence phenomenon and the direction of preset angle point corresponding in described rectangular area at the coincidence number of times of the alternative angle point of described generation coincidence phenomenon when consistent, the angle point using the alternative angle point of described generation coincidence phenomenon as business card to be identified.
5. device according to claim 4, it is characterized in that, described first processes submodule in the time obtaining the direction of described angle point to be identified, in four right angles that described vertical line and described extended line are formed, the direction at the right angle relative with described line is as the direction of described alternative angle point.
6. according to the device described in claim 4 or 5, it is characterized in that, described display unit also points out user to take for the mode that shows described preset angle point on the display screen of intelligent terminal to flash.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1967565A (en) * | 2006-11-22 | 2007-05-23 | 上海合合信息科技发展有限公司 | Method to realize business card scan by mobile phone with digital camera |
| CN101008985A (en) * | 2007-01-18 | 2007-08-01 | 章毅 | Seal identification system and controlling method thereof |
| CN101155238A (en) * | 2006-09-27 | 2008-04-02 | 富士通株式会社 | Image region detection method, recording medium, and device therefor |
| CN101248454A (en) * | 2005-08-25 | 2008-08-20 | 株式会社理光 | Image processing method and image processor, digital camera equipment, and recording medium with image processing program stored thereon |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248454A (en) * | 2005-08-25 | 2008-08-20 | 株式会社理光 | Image processing method and image processor, digital camera equipment, and recording medium with image processing program stored thereon |
| CN101155238A (en) * | 2006-09-27 | 2008-04-02 | 富士通株式会社 | Image region detection method, recording medium, and device therefor |
| CN1967565A (en) * | 2006-11-22 | 2007-05-23 | 上海合合信息科技发展有限公司 | Method to realize business card scan by mobile phone with digital camera |
| CN101008985A (en) * | 2007-01-18 | 2007-08-01 | 章毅 | Seal identification system and controlling method thereof |
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