CN102955941A - Identity information recording method and device - Google Patents
Identity information recording method and device Download PDFInfo
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- CN102955941A CN102955941A CN2011102551109A CN201110255110A CN102955941A CN 102955941 A CN102955941 A CN 102955941A CN 2011102551109 A CN2011102551109 A CN 2011102551109A CN 201110255110 A CN201110255110 A CN 201110255110A CN 102955941 A CN102955941 A CN 102955941A
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Abstract
The invention discloses an identity information recording method and an identity information recording device, and belongs to the field of image processing. The method comprises the following steps of: reading a scanned image of an identity card copy, and positioning a region in which identity card numbers are positioned; and determining information regions in the scanned image of the identity card copy according to the region in which the identity card numbers are positioned, and identifying the information regions to obtain identity information contained by the identity card copy. By using the identity information recording method, the influence of bottom lines on the identity card copy can be eliminated by fuzzy processing; and other identity information on the identity card copy is extracted according to the obtained positions of the identity card numbers, so that the identity information on the identity card copy can be read, and the identity card copy can be independently identified during batch processing of other tickets.
Description
Technical field
The present invention relates to the data manufacture field, particularly a kind of identity information input method and device.
Background technology
I.D. is the certificate that is applicable to identify personal identification.In the daily life, people are handling telecommunication service, use banking etc. all needs to provide I.D., and by telecommunication department, bank I.D. is duplicated with the electronic information of stylus point to the user, these electronic information comprise that I.D. shows address name, sex and the head image information etc. of printing.
Because the photocopying effect of Copy of ID Card is with copier and arrange directly related, the photocopying effect of Copy of ID Card often there are differences, particularly the shading on it on identity information to read impact very large, be difficult to guarantee that the Copy of ID Card of copier output all is fit to carry out the data typing, especially in telecommunications, banking, Copy of ID Card often mixes with a large amount of bill, and the type of I.D. is confirmed and all there is very large difficulty in typing.
So, need a kind of identity information input method, not only can read out the identity information on the Copy of ID Card, and in the batch processing of other documents, Copy of ID Card be carried out independent identification.
Summary of the invention
The invention provides a kind of identity information input method and device, eliminate shading to the impact of Copy of ID Card location by specific image blurring processing, position according to the ID (identity number) card No. that obtains, further extract other identity informations on the Copy of ID Card, Copy of ID Card is mixed also with other bill can be distinguished the identity information on it and typing exactly.
The invention discloses a kind of identity information input method, comprising:
The scan image of reading identity card copy, ID (identity number) card No. region, location;
According to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains identity information corresponding to Copy of ID Card.
Described method also comprises: the ID (identity number) card No. region is identified, and recognition result is verified.
During ID (identity number) card No. region, described location, image is carried out auto adapted filtering, the pixel region that obtains according to auto adapted filtering extracts, and obtains the baseline of ID (identity number) card No. region, and carries out slant correction according to baseline.
Described when image is carried out auto adapted filtering, the weights of filter window center are zero, and the weights of peripheral position are for just; According to the weights in the filter window each pixel in the scan image is weighted on average.
Described filter window is 4 * 4 windows, and the weights at center 2 * 2 are zero.
Described determine one's identity the card copy scan image in information area the time, according to the relative position relation of each information area in ID (identity number) card No. region and the scan image, determine the position of each information area in the scan image.
The invention also discloses a kind of identity information input device, comprising:
Locating module, the scan image of reading identity card copy, ID (identity number) card No. region, location;
Determination module, according to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains identity information corresponding to Copy of ID Card.
Described device also comprises: authentication module, and the ID (identity number) card No. region is identified, and recognition result is verified.
Described locating module carries out auto adapted filtering to image when ID (identity number) card No. region, location, the pixel region that obtains according to auto adapted filtering extracts, and obtains the baseline of ID (identity number) card No. region, and carries out slant correction according to baseline.
Described when image is carried out auto adapted filtering, the weights of filter window center are zero, and the weights of peripheral position are for just; According to the weights in the filter window each pixel in the scan image is weighted on average.
Described filter window is 4 * 4 windows, and the weights at center 2 * 2 are zero.
Described determine one's identity the card copy scan image in information area the time, according to the relative position relation of each information area in ID (identity number) card No. region and the scan image, determine the position of each information area in the scan image.
Identity information input method disclosed by the invention and device, eliminate shading to the impact of Copy of ID Card by Fuzzy Processing, position according to the ID (identity number) card No. that obtains, extract other identity informations on the Copy of ID Card, not only can read out the identity information on the Copy of ID Card, and in the batch processing of other documents, Copy of ID Card be carried out independent identification.
Description of drawings
Fig. 1 is identity information input method process flow diagram in the embodiment of the invention;
Fig. 2 is the filter window synoptic diagram of identity information input method in the embodiment of the invention;
Fig. 3 is the scan image of the Copy of ID Card of identity information input method in the embodiment of the invention;
Fig. 4 is the scan image of the filtered Copy of ID Card of identity information input method in the embodiment of the invention;
Fig. 5 is the bianry image corresponding to scan image of the filtered Copy of ID Card of identity information input method in the embodiment of the invention;
Fig. 6 is the synoptic diagram after in the embodiment of the invention connected domain among Fig. 5 being merged;
Fig. 7 is the synoptic diagram to carrying out behind Fig. 5 slant correction obtaining behind the connected domain analysis in the embodiment of the invention;
Fig. 8 carries out as a result figure after the binaryzation to the ID (identity number) card No. region in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
China second-generation identity card is the single page card-type credentials that has the multi-layered polyester Material cladding to form, and adopts the non-contact IC card fabrication techniques, possesses to look and reads and machine-readable two kinds of functions.Long 85.6 millimeters of certificate size design, wide 54 millimeters, thick 1.0 millimeters.The certificate front have issuing authority and valid period 2 registries, be printed on national emblem pattern, certificate title, enjoyable Great Wall pattern and colored shading; There are name, sex, nationality, date of birth, address, the place where someone is permanent residents, citizenship number and my 7 registries of photograph of this witness at the certificate back side, is printed on colored shading.
After China second-generation identity card was duplicated, colored shading was shown as the gray scale texture.The scan image of Copy of ID Card is often because the interference of gray scale texture reduces Word message discrimination when identifying greatly.
The embodiment of the invention provides a kind of identity information input method, as shown in Figure 1, may further comprise the steps:
Step 1: the scan image of reading identity card copy, ID (identity number) card No. region, location;
Behind the scan image of reading identity card copy, image is carried out auto adapted filtering, the image that obtains according to auto adapted filtering carries out binaryzation, pixel region in the image after the binaryzation is carried out pixel extraction behind the connected domain analysis, obtain the baseline of ID (identity number) card No. region, and carry out slant correction according to baseline.
When image was carried out auto adapted filtering, the weights of filter window center were zero, and the weights of peripheral position are weighted on average each pixel in the scan image according to the weights in the filter window for just.In the present embodiment, such as Fig. 2, shown in Figure 3, filter window is 4 * 4 windows, and the weights at center 2 * 2 are zero, and the weights of four corner points of window are 1, and the weights at frame place are 2.Adopt this filter window that the scan image of as shown in Figure 3 Copy of ID Card is carried out filtering, weights according to the filter window correspondence position are weighted on average by pixel scan image, the pixel value of pixel is the weighted mean value of the pixel value of the pixel value of pixel of original position and eight pixels of this pixel periphery after the filtering, obtains the scan image of filtered Copy of ID Card as shown in Figure 4.
When employing filter window as shown in Figure 2 carries out filtering, because the weights at filter window center are zero, then after the filtering in the scan image: the pixel value of the pixel corresponding with the filter window center after the filtering=(before the filtering with the pixel value of pixel corresponding to filter window center * 0+ filtering before with the pixel value * filtering of the neighboring pixel point of pixel corresponding to filter window center is front and the weights of the neighboring pixel point of the pixel that the filter window center is corresponding)/20;
In the scan image of Copy of ID Card, the background shading place is because thinner, and pixel value is changed greatly by the impact of filtering, has basically lost original information, and filtered background shading has become and relatively pressed close to background colour.On the contrary, because the stroke of the word segment in the scan image is thicker, the stroke center is subjected to the less that affects of filtering, is still keeping original information, thereby can easily word segment be distinguished from background shading in the binary conversion treatment of back.Like this, in the scan image of filtered Copy of ID Card, although Pixel Information corresponding to the edge of word segment also has been subject to the interference of filtering, pixel corresponding to the center of word segment reached the demand of location.
The image that obtains according to auto adapted filtering carries out binaryzation, after the image that adopts Binarization methods that auto adapted filtering is obtained carries out binary conversion treatment, the bianry image as shown in Figure 5 that obtains is carried out connected domain analysis.As shown in Figure 6, the connected domain that obtains is merged, obtain baseline corresponding to each connected domain in the bianry image, in the present embodiment, it is 5 degree that bianry image merges the angle that the corresponding baseline of connected domain of the width maximum obtain tilts, and to according to baseline bianry image shown in Figure 55 degree that turn clockwise being carried out slant correction.The bianry image that obtains behind the slant correction is carried out connected domain analysis, the connected domain that obtains is merged, each connected domain as shown in Figure 7, from Fig. 7, search the connected domain with set length breadth ratio, in the present embodiment, shown in the dotted line frame among Fig. 7, set length breadth ratio is 13:1, the zone that this connected domain is corresponding is carried out binaryzation as the ID (identity number) card No. region to the ID (identity number) card No. region.
Step 1-2: the ID (identity number) card No. region is identified, and recognition result is verified;
As shown in Figure 8, adopt the OCR engine to identify the binary image of corresponding region, if recognition result corresponding to ID (identity number) card No. region that obtains passes through after weighted check, then this recognition result is ID (identity number) card No., and this zone is the ID (identity number) card No. region.In the present embodiment, OCR engine recognition result is: 412823197404101733, after weighted check, pass through, then this recognition result is ID (identity number) card No., and this zone is the ID (identity number) card No. region, and the coordinate of this zone correspondence is ((245,354), (611,394)), (245,354) are this regional upper left corner coordinate, and (611,394) are this regional lower right corner coordinate.
Step 2: according to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains identity information corresponding to Copy of ID Card.
Because the position of each information area of I.D. is relatively fixing, then the position according to the ID (identity number) card No. region positions each information area in the scan image of Copy of ID Card.
In the present embodiment, after the connected domain of ID (identity number) card No. correspondence position merged, scan image to Copy of ID Card carries out slant correction, and in artificial mode manual markings is carried out in the position of each information area of I.D., perhaps utilize edge extracting method that each information area on the scan image is detected, obtain the relativity shift of ID (identity number) card No. region and other information areas, thereby determine the position of each information area in the scan image.
In the present embodiment, the scan image of Copy of ID Card is 300DPI, and take the upper left corner of scan image as true origin, level is to the right the positive dirction of horizontal ordinate, is the positive dirction of ordinate straight down;
The name zone of detecting gained with respect to the upper left corner in identification card number zone respectively side-play amount be: left-110, on-310, right+30, lower-262; Then the upper left corner level in identification card number zone being offset horizontal ordinate corresponding to 110 places left is the left margin in name zone, being offset straight up ordinate corresponding to 310 places is the coboundary in name zone, and it is the right margin in name zone that level is offset horizontal ordinate corresponding to 30 places to the right; Being offset straight up ordinate corresponding to 262 places is the lower boundary in name zone, and namely coordinate corresponding to name zone is ((135,44), (275,92)).
The sex zone of detecting gained with respect to the upper left corner in identification card number zone respectively side-play amount be: left-110, on-270, right-60, lower-225; Then the upper left corner level in identification card number zone being offset horizontal ordinate corresponding to 110 places left is the left margin in sex zone, being offset straight up ordinate corresponding to 270 places is the coboundary in sex zone, and it is the right margin in sex zone that level is offset horizontal ordinate corresponding to 60 places left; Being offset straight up ordinate corresponding to 225 places is the lower boundary in sex zone, and namely coordinate corresponding to sex zone is ((135,84), (185,129)).
The national zone of detecting gained with respect to the upper left corner in identification card number zone respectively side-play amount be: left+20, on-270, right+65, lower-225; Then the upper left corner level with the identification card number zone is offset the left margin that horizontal ordinate corresponding to 20 places is national zone to the right, be offset straight up ordinate corresponding to 270 places and be the coboundary in national zone, level is offset horizontal ordinate corresponding to 65 places to the right and is the right margin in national zone; Be offset straight up ordinate corresponding to 225 places and be the lower boundary in national zone, namely coordinate corresponding to national zone is ((265,84), (310,129)).
The birth zone of detecting gained with respect to the upper left corner in identification card number zone respectively side-play amount be: left-110, on-230, right+140, lower-185; Then the upper left corner level with the identification card number zone is offset the left margin that horizontal ordinate corresponding to 110 places is the birth zone left, ordinate corresponding to straight up skew-230 places is the regional coboundary of birth, and level is offset horizontal ordinate corresponding to 140 places to the right and is the right margin in birth zone; Be offset straight up ordinate corresponding to 185 places and be the lower boundary in birth zone, namely coordinate corresponding to birth zone is ((135,124), (385,169)).
The zone, address of detecting gained with respect to the upper left corner in identification card number zone respectively side-play amount be: left-110, on-200, right+180, lower-60; Then the upper left corner level in identification card number zone being offset horizontal ordinate corresponding to 110 places left is the left margin in zone, address, being offset straight up ordinate corresponding to 200 places is the coboundary in zone, address, and it is the right margin in zone, address that level is offset horizontal ordinate corresponding to 180 places to the right; Being offset straight up ordinate corresponding to 60 places is the lower boundary in zone, address, and namely coordinate corresponding to zone, address is ((135,154), (425,294)).
Each information area that obtains is carried out OCR identification, obtain identity information corresponding to Copy of ID Card.
A kind of identity information input device comprises:
Locating module, the scan image of reading identity card copy, ID (identity number) card No. region, location;
Determination module, according to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains identity information corresponding to Copy of ID Card.
Described device also comprises: authentication module, and the ID (identity number) card No. region is identified, and recognition result is verified.
Described locating module carries out auto adapted filtering to image when ID (identity number) card No. region, location, the pixel region that obtains according to auto adapted filtering extracts, and obtains the baseline of ID (identity number) card No. region, and carries out slant correction according to baseline.
Described when image is carried out auto adapted filtering, the weights of filter window center are zero, and the weights of peripheral position are for just; According to the weights in the filter window each pixel in the scan image is weighted on average.
Described filter window is 4 * 4 windows, and the weights at center 2 * 2 are zero.
Described determine one's identity the card copy scan image in information area the time, according to the relative position relation of each information area in ID (identity number) card No. region and the scan image, determine the position of each information area in the scan image.
Identity information input method disclosed by the invention and device, eliminate shading to the impact of Copy of ID Card by Fuzzy Processing, position according to the ID (identity number) card No. that obtains, extract other identity informations on the Copy of ID Card, not only can read out the identity information on the Copy of ID Card, and in the batch processing of other documents, Copy of ID Card be carried out independent identification.
Although it will be understood by those skilled in the art that in the above-mentioned explanation, for ease of understanding, the step of method has been adopted the succession description, should be pointed out that for the order of above-mentioned steps and do not do strict restriction.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, this program can be stored in the computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
Will also be appreciated that the apparatus structure shown in accompanying drawing or the embodiment only is schematically, the presentation logic structure.The module that wherein shows as separating component may or may not be physically to separate, and the parts that show as module may be or may not be physical modules.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. an identity information input method is characterized in that, comprises the steps:
The scan image of reading identity card copy, ID (identity number) card No. region, location;
According to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains the identity information that Copy of ID Card comprises.
2. method according to claim 1, it is characterized in that: described method also comprises: the ID (identity number) card No. region is identified, and recognition result is verified.
3. method according to claim 1, it is characterized in that: during ID (identity number) card No. region, described location, image is carried out auto adapted filtering, the pixel region that obtains according to auto adapted filtering extracts, obtain the baseline of ID (identity number) card No. region, and carry out slant correction according to baseline.
4. method according to claim 3 is characterized in that: described when image is carried out auto adapted filtering, the weights of filter window center are zero, and the weights of peripheral position are for just; According to the weights in the filter window each pixel in the scan image is weighted on average.
5. method according to claim 4, it is characterized in that: described filter window is 4 * 4 windows, the weights at center 2 * 2 are zero.
6. method according to claim 1, it is characterized in that: described determine one's identity the card copy scan image in each information area the time, according to the relative position relation of each information area in ID (identity number) card No. region and the scan image, determine the position of each information area in the scan image.
7. an identity information input device is characterized in that, comprises such as lower module:
Locating module, the scan image of reading identity card copy, ID (identity number) card No. region, location;
Determination module, according to the position of ID (identity number) card No. region, each information area in the scan image of the card copy that determines one's identity is identified each information area, obtains the identity information that Copy of ID Card comprises.
8. device according to claim 7, it is characterized in that: described device also comprises: authentication module, the ID (identity number) card No. region is identified, and recognition result is verified.
9. device according to claim 7, it is characterized in that: described locating module is when ID (identity number) card No. region, location, image is carried out auto adapted filtering, the pixel region that obtains according to auto adapted filtering extracts, obtain the baseline of ID (identity number) card No. region, and carry out slant correction according to baseline.
10. device according to claim 9 is characterized in that: described when image is carried out auto adapted filtering, the weights of filter window center are zero, and the weights of peripheral position are for just; According to the weights in the filter window each pixel in the scan image is weighted on average; Described filter window is 4 * 4 windows, and the weights at center 2 * 2 are zero.
11. device according to claim 7, it is characterized in that: described determine one's identity the card copy scan image in each information area the time, according to the relative position relation of each information area in ID (identity number) card No. region and the scan image, determine the position of each information area in the scan image.
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