CN101968903A - Valuable file identification method and system - Google Patents
Valuable file identification method and system Download PDFInfo
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- CN101968903A CN101968903A CN2010102952256A CN201010295225A CN101968903A CN 101968903 A CN101968903 A CN 101968903A CN 2010102952256 A CN2010102952256 A CN 2010102952256A CN 201010295225 A CN201010295225 A CN 201010295225A CN 101968903 A CN101968903 A CN 101968903A
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Abstract
The invention discloses a valuable file identification method and a valuable file identification system. The method comprises the following steps of: storing the acquired valuable file data into a toroidal enclosed storage area, and recording an initial address and an ending address of a storage space of each piece of valuable file data; and reading each piece of valuable file data from the toroidal enclosed storage area in a first-in first-out order according to the initial address and the ending address, and identifying the legality of each valuable file, wherein the ending address of the storage space of the ith piece of valuable file data is succeeded by the initial address of the storage space of the (i+1)th piece of valuable file data; and when the toroidal enclosed storage area is full, the subsequent data covers the data which is stored for the longest time in the toroidal enclosed storage area. The method can save storage resources and improve the utilization rate of the storage space.
Description
Technical field
The present invention relates to the recognition technology field of value document, relate in particular to a kind of valuable document recognition method and system that improves the storage space utilization factor.
Background technology
The circulation of value document such as banknote, securities in people's life is very big, and involvement aspect is very wide, and value document is carried out anti-counterfeit recognition, can prevent the circulation of fictitious bill, ensures people's property safety.
Existing value document recognition system is installed photoelectricity correlation sensor in the front-end and back-end of recognition device, as the trigger equipment of recognition system " startup " and " end " based on a trigger policy.Its workflow is as follows:
Step 1, after current value document entered transmitting device, transmitting device was sent to value document effective surveyed area of the photoelectricity correlation sensor of front end.The photoelectricity correlation sensor of front end is blocked by value document, sends the trigger pip of " value document arrival " to central controller; Central authorities' controller sends " startup " instruction start-up system, and notice front end counter adds one.
Step 2, harvester begin to gather the value document data, and the value document data in real time that collects is saved in the storer.Through behind the acquisition time T that presets, harvester stops to gather, and sends " collection end signal " to central controller.
Step 3, central controller notice recognition device is done identification to the value document data that collect and is handled.
Step 4, behind the end of identification, value document is transferred to effective surveyed area of the photoelectricity correlation sensor of rear end.The photoelectricity correlation sensor of rear end is blocked by value document, and to the signal of central controller transmission " value document leaves ", central controller notice rear end counter adds one.
Step 5, the count results of central controller coupling front end counter and rear end counter is if the count results unanimity represents that then current value document disposes, and enters the processing of next value document; Otherwise system reports an error, and quits work.
Said system adopts a plurality of storage unit in turn to deposit the value document data, the corresponding value document data of storage unit.The storage size of each storage unit is fixed, and is as the criterion enough to deposit any value document data.If the current value document data identification of storing of storage unit finishes, then empty storage space, wait for and deposit next value document data.
There is following shortcoming in above-mentioned value document recognition system: because the physical size of various value documents there are differences, cause the big or small inequality of various value document data.Yet the storage size of each storage unit of said system is fixed, when a shared space of value document data more after a little while, must cause the part storage space by vacant, cause the waste of storage resources, operating factor of memory space is low.
Summary of the invention
Technical matters to be solved by this invention is, a kind of valuable document recognition method and system are provided, can the conserve memory resource, improve operating factor of memory space.
For solving above technical matters, the embodiment of the invention provides a kind of recognition methods of value document, comprising:
According to the gradation of image value of sample area, judge whether value document enters sample area; If then gather the value document data;
The value document data storage that collects is arrived annular closed memory block, and the start address and the end address of writing down the storage space of every value document data; Wherein, i opens the end address of the storage space of value document data and continues mutually with the start address that (i+1) opens the storage space of value document data, after the closed memory block of described annular was filled with, data afterwards covered the longest data of resting period in the closed memory block of described annular; I is the natural number more than or equal to 1;
According to the start address and the end address of the storage space of every value document data, from the closed memory block of annular, read every value document data according to the order of first in first out, the legitimacy of every value document is discerned.
A closed memory cycle of the closed memory block of described annular goes up maximum storage m and opens the value document data, and m is the natural number greater than 1;
It is t that i opens the moment that the value document data storage finishes
i, the moment that (i+m-1) value document data storage finishes is t
I+m-1When being opened initial that the legitimacy of value document discerns, i is engraved in t
iTo t
I+m-1Between, and i opened the time overhead T that value document is discerned
iSatisfy: T
i≤ (t
I+m-1-t
i).
Correspondingly, the embodiment of the invention also provides a kind of value document recognition system, comprising:
Monitoring modular is used for the gradation of image value according to sample area, judges whether value document enters sample area;
Acquisition module is used for gathering the value document data after described monitoring modular judges that value document enters sample area;
Memory module, the value document data storage that is used for described acquisition module is collected is to annular closed memory block, and the start address and the end address of writing down the storage space of every value document data; Wherein, i opens the end address of the storage space of value document data and continues mutually with the start address that (i+1) opens the storage space of value document data, after the closed memory block of described annular was filled with, data afterwards covered the longest data of resting period in the closed memory block of described annular; I is the natural number more than or equal to 1;
Identification module is used for start address and end address according to the storage space of every value document data, reads every value document data according to the order of first in first out from the closed memory block of annular, and the legitimacy of every value document is discerned.
Valuable document recognition method that the embodiment of the invention provides and system, the value document data in turn are stored in annular closed memory block, and the storage space of adjacent two value document data joins, and avoids storage space by vacant, save storage resources, improved operating factor of memory space.And the storage space of annular closed memory block is recycled ground and repeatedly uses, and for data storage provides enough spaces, can realize continuous acquisition, the storage of many value documents.In addition, the embodiment of the invention is also come the arrival of active monitoring value document according to the gradation of image value of sample area, avoided the false triggering of recognition system, improves the reliability of recognition system.
Description of drawings
Fig. 1 is the schematic flow sheet of first embodiment of valuable document recognition method provided by the invention;
Fig. 2 is the schematic flow sheet of second embodiment of valuable document recognition method provided by the invention;
Fig. 3 is the synoptic diagram of an embodiment of the annular closed memory block that provides of the embodiment of the invention;
Fig. 4 is the state data memory figure of annular closed memory block shown in Figure 3;
Fig. 5 is the structural representation of an embodiment of value document recognition system provided by the invention;
Fig. 6 is the structural representation of an embodiment of monitoring modular provided by the invention;
Fig. 7 is the structural representation of an embodiment of recognition unit provided by 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 is obtained under the creative work prerequisite.
Referring to Fig. 1, be the schematic flow sheet of first embodiment of valuable document recognition method provided by the invention.
The valuable document recognition method of first embodiment may further comprise the steps:
S101 according to the gradation of image value of sample area, judges whether value document enters sample area; If then gather the value document data;
S102 arrives annular closed memory block with the value document data storage that collects, and the start address and the end address of writing down the storage space of every value document data;
Wherein, i opens the end address of the storage space of value document data and continues mutually with the start address that (i+1) opens the storage space of value document data, after the closed memory block of described annular was filled with, data afterwards covered the longest data of resting period in the closed memory block of described annular; I is the natural number more than or equal to 1;
S103 according to the start address and the end address of the storage space of every value document data, reads every value document data according to the order of first in first out from the closed memory block of annular, the legitimacy of every value document is discerned.
The valuable document recognition method that present embodiment provides adopts annular closed storage policy to store the value document data, can the conserve memory resource, improve operating factor of memory space, and can also realize continuous acquisition, the storage of many value documents.
Below in conjunction with Fig. 2～Fig. 4, the flow process of valuable document recognition method provided by the invention is described in detail.
Referring to Fig. 2, be the schematic flow sheet of second embodiment of valuable document recognition method provided by the invention.The valuable document recognition method of second embodiment specifically may further comprise the steps:
S201, system start-up;
Value document input note distribution module starts note distribution.Transport module is sent to value document the sample area of acquisition module from the note distribution module.
S202 gathers the present image of sample area, monitors value document in real time and whether enters sample area;
The arrival that the embodiment of the invention is come the active monitoring value document according to the gradation of image value of sample area, concrete treatment scheme is as follows:
Gather the present image of sample area, the gray-scale value of present image and the gray-scale value of uncalibrated image are compared, obtain both similarities; If similarity is less than or equal to the first threshold that presets, judge that then value document does not enter sample area; If similarity more than or equal to second threshold value that presets, judges that then value document enters sample area; Otherwise, judge that image acquisition device breaks down.Wherein, described uncalibrated image is the image of described sample area under no foreign object blocks, and described second threshold value is greater than described first threshold.
During concrete enforcement, one " demarcating the zone " can be set in the adjacent position of " sample area ".When gathering the image of " sample area ", the image of " demarcating the zone " will be collected simultaneously.The gradation of image value G that " demarcates the zone "
sBe fixed value, identical or close with gradation of image value under " sample area " no foreign object blocks.Being provided with value document, to be sent to " sample area " required time from the note distribution module be T
o, the gradation of image value of " sample area " that collects at moment t is G
t, the first threshold that presets is H
0, second threshold value that presets is H
1, " demarcating the zone " and the gradation of image value calculation of similarity degree formula of " sample area " are: || G
S-G
t||
P
As t＜T
oThe time, value document does not enter " sample area ", and " the demarcating the zone " and the gradation of image value similarity of " sample area " that are collected meet the following conditions:
|| G
S-G
t||
P≤ H
0, wherein, 0≤H
0≤ 0.1 (1)
As t 〉=T
oThe time, value document enters " sample area ", and the view data of being somebody's turn to do " sample area " changes, and " the demarcating the zone " and the gradation of image value similarity of " sample area " that are collected meet the following conditions:
|| G
S-G
t||
P〉=H
1, wherein, 0.1＜H
1≤ 0.5 (2)
According to the gradation of image value of " sample area " judge method that whether value document arrive as shown in the formula:
When the gradation of image value similarity of " demarcating the zone " and " sample area " satisfied formula (1), formula (3) was output as 1, and the expression value document does not enter sample area, and image acquisition device is in normal operating conditions;
When the gradation of image value similarity of " demarcating the zone " and " sample area " satisfied formula (2), formula (3) was output as 0, and the expression value document enters sample area;
Otherwise formula (3) is output as-1, and the presentation video collector breaks down.
The value document recognition system of prior art is based on passive some trigger policy, by means of the having of correlation sensor, do not have the collection, identification and the end operation that block triggering system, false triggering takes place easily, system's error rate height.And the embodiment of the invention is according to the arrival of the gradation of image value active monitoring value document of sample area, makes recognition system break away from dependence to trigger device, avoided the false triggering of recognition system, improved the reliability of recognition system; But also reduce system hardware number of devices, the risk that the reduction system breaks down.In addition, the embodiment of the invention is also according to the working condition of the gradation of image value diagnostic image acquisition device of sample area, and makes timely feedback, reduced the risk that causes because of device fault, further improved the reliability of system.
S203, value document enters sample area, gathers the data of described value document, will collect the value document data storage to annular closed memory block;
The embodiment of the invention adopts annular closed memory management policy storage and management value document data.The value document data are in turn deposited in the closed memory block of annular, and i opens the end address of the storage space of value document data, and the start address of opening the storage space of value document data with (i+1) continues mutually; After the closed memory block of described annular was filled with data, data afterwards covered the longest data of resting period in the closed memory block of described annular.
During concrete enforcement, the closed memory block of annular can be made of N storage unit, the memory space address of adjacent two storage unit continues mutually, promptly the start address of the end address of k storage unit and (k+1) individual storage unit joins, the start address of the end address of N storage unit and the 1st storage unit joins, thereby constitutes a closed memory block of annular.Wherein, N is the natural number greater than 1; K is the natural number more than or equal to 1, and k is less than N.At least 1 value document data can be deposited in the closed memory block of this annular.Be that example describes the closed memory block of annular only below with six storage unit.
As shown in Figure 3, the closed memory block of this annular is made of six storage unit, the storage size of each storage unit is fixed, and the beginning and end address of adjacent two storage unit joins, be that the end address tear (1) of storage unit 1 and the start address front (2) of storage unit 2 join, the end address tear (2) of storage unit 2 and the start address front (3) of storage unit 3 join, the end address tear (3) of storage unit 3 and the start address front (4) of storage unit 4 join, the end address tear (4) of storage unit 4 and the start address front (5) of storage unit 5 join, the end address tear (5) of storage unit 5 and the start address front (6) of storage unit 6 join, the end address tear (6) of storage unit 6 and the start address front (1) of storage unit 1 join, thereby constitute a closed memory block of annular.The storage size of six storage unit can be configured to equal, and is perhaps unequal.
On a closed memory cycle of the closed memory block of annular, six storage unit are in turn stored data.As shown in Figure 4, annular closed memory block comprises following three kinds of situations to the store status of data:
The first, one value document data all drops in the same storage unit.For example, shown in Fig. 4 (a), the 1st value document data all leave in the storage unit 1.
The second, one value document data crossed over different storage unit.For example, shown in Fig. 4 (b), the part of the 2nd value document data leaves in the storage unit 1, and another part leaves in the storage unit 2.
The 3rd, six storage unit of annular closed memory block are in turn stored data, and after six storage unit were filled with, data afterwards covered the longest data of resting period in the annular closed memory block.For example, shown in Fig. 4 (c), after six storage unit were filled with data, data afterwards covered the longest data of resting period in the storage unit 1.
More specifically, step S203 is as follows to collection, the Stored Procedure of value document data:
When formula (3) when being output as 0, represent that i opens value document and enters sample area, begin to gather the data that i opens value document, in real time with the deposit data that collects in the closed memory block of annular, and write down the start address Current_front (i) that i opens the value document data space.
The data of opening value document as i are finished by collection, and after leaving sample area, the output of formula (3) becomes 1, writes down the end address Current_tear (i) that i opens the value document data space.
When the output of formula (3) became 0 once more, expression (i+1) was opened value document and is entered sample area, repeats above-mentioned treatment scheme collection, stores the value document data.Wherein, (i+1) opens the start address Current_front (i+1) of value document data space, and the end address Current_tear (i) that opens the value document data space with i continues mutually.Promptly open the start address of the end address Current_tear (i) of value document data space as (i+1) value document data space with i.
After (i+1) value document data acquisition, storage finish, monitor and wait for that (i+2) opens the arrival of value document.
The embodiment of the invention adopts annular closed memory management policy storage and management value document data, and the storage space of adjacent two value document data joins, and has avoided storage space by vacant, has saved storage resources, has improved operating factor of memory space.And, the storage space of the closed memory block of annular is recycled ground and repeatedly uses, and has not only further improved operating factor of memory space, also provides enough spaces for data storage, can realize continuous acquisition, the storage of many value documents, and allow value document and arrive at any time.
S204 carries out multistage parallel identification to value document and handles;
In embodiments of the present invention, when the value document deposit data after the annular closed memory block, from the closed memory block of annular, read every value document data according to the order of first in first out, the legitimacy of every value document is discerned.
Storage m opens the value document data if a closed memory cycle of annular closed memory block goes up at most, and m is the natural number greater than 1; It is t that i opens the moment that the value document data storage finishes
i, the moment that (i+m-1) value document data storage finishes is t
I+m-1, be engraved in t when then i being opened initial that the legitimacy of value document discerns
iTo t
I+m-1Between, and i opened the time overhead T that value document is discerned
iMeet the following conditions:
T
i≤ (t
I+m-1-t
i), wherein, i=1,2,3,4... (4)
Because after annular closed memory block had been deposited m and opened the value document data, data afterwards can cover the longest data storage time.Therefore, the embodiment of the invention makes the available recognition time expense of value document satisfy formula (4), can guarantee that the value document data in the annular closed memory block are finished identification before being capped, and improves the reliability of recognition system.
Preferably, the embodiment of the invention has disposed a plurality of recognition units, is used for the recognition sequence according to value document, to the identification that walks abreast of the legitimacy of different value documents, to improve every available effective recognition time of value document.Below only with dispose 6 storage unit, 5 recognition units are example, and the startup order of recognition unit and parallel recognition methods are described in detail, and are as follows:
Suppose 6 value document data of upward maximum storages of a closed memory cycle of annular closed memory block.
(storage finishes and constantly is t when the 1st value document data acquisition and storage finish
1) after, start first recognition unit.First recognition unit reads the 1st value document data according to the start address Current_tear (1) and the end address Current_tear (1) of the 1st value document data space from the closed memory block of annular, the 1st value document discerned;
(storage finishes and constantly is t when the 2nd value document data acquisition and storage finish
2) after, start second recognition unit.Second recognition unit reads the 2nd value document data according to the start address Current_tear (2) and the end address Current_tear (2) of the 2nd value document data space from the closed memory block of annular, the 2nd value document discerned.
In like manner, starting the 3rd recognition unit, the 4th recognition unit, the 5th recognition unit successively discerns the 3rd, 4,5 value document number respectively.
(storage finishes and constantly is t when the 6th value document data acquisition and storage finish
6) after, first recognition unit is also finished the identification to the 1st value document, starts first recognition unit the 6th value document discerned.Can cover the 1st value document owing to be about to the 7th value document data of storage, therefore, the identification zero-time of the 1st value document is controlled at t
1To t
6Between, and at t
6Finish the identification of the 1st value document before arriving, can guarantee the reliability of value document identification.The 1st value document discerned available time overhead T
1Satisfy: T
1≤ (t
6-t
1).
In like manner, (storage finishes and constantly is t when the 7th value document data acquisition and storage finish
7) after, second recognition unit is also finished the identification to the 2nd value document, starts second recognition unit the 7th value document discerned.The 2nd value document discerned available time overhead T
2Satisfy: T
2≤ (t
7-t
2).
The rest may be inferred, and the value document data in the closed memory block of annular all identification finish.
The embodiment of the invention adopts annular closed memory management policy to store the value document data, and adopt multistage parallel identification to handle framework value document is discerned, can realize continuous acquisition, many value document data of storage, and improve every available effective recognition time of value document, allow recognition system that value document is done more complicated, careful, deep analyzing and processing, as: image recovery, figure image intensifying etc. can obtain value document is described more accurately.
More specifically, the method that step S204 discerns the legitimacy of value document is as follows:
H
MaxBe the height threshold that presets, the maximum height of a value document image of expression; H
iThe picture altitude that the i of the current identification of expression recognition unit opens value document;
I is opened the picture altitude H of value document
iWith the height threshold H that presets
MaxCompare, if H
i＜H
Max, judge that then it is individual value document that i opens value document; If H
i〉=H
Max, judge that then i opens value document for connecting paper money (" connecting paper money " is meant many value documents that are sticked together), returns processing;
Judging that i opens value document for after individual value document, i is being opened the legitimacy (for example the true and false, denomination, new and old etc.) of value document and differentiate,, then receiving i and open value document if legal; Otherwise, return processing.
Optionally, can also dispose counter during the invention process, the value document that connects paper money, legal value document or the quantity of illegal value document are counted.
The embodiment of the invention utilizes the image information inspection of value document to connect the paper money situation, when find connecting paper money, can be in time to system feedback, thus reduce the reject rate of system.
S205, system finishing work;
Note distribution finishes, handle last value document after, system finishing work empties annular closed memory block.
The valuable document recognition method that the embodiment of the invention provides, the value document data in turn are stored in annular closed memory block, and the storage space of adjacent two value document data joins, and avoids storage space by vacant, save storage resources, improved operating factor of memory space.And the storage space of annular closed memory block is recycled ground and repeatedly uses, and for data storage provides enough spaces, can realize continuous acquisition, the storage of many value documents.In addition, the false triggering of recognition system has also been avoided in the arrival that the embodiment of the invention is come the active monitoring value document according to the gradation of image value of sample area, improves the reliability of recognition system.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Correspondingly, the present invention also provides a kind of value document recognition system, can realize in the foregoing description valuable document recognition method the institute in steps.
Referring to Fig. 5, be the structural representation of an embodiment of value document recognition system provided by the invention.
The value document recognition system of present embodiment comprises:
Central authorities' controller 20, the operation, the treatment scheme that are used for whole recognition system are controlled;
Note distribution module 21 is used to import value document, starts note distribution;
Monitoring modular 23 is used for the gradation of image value according to sample area, judges whether value document enters sample area;
During concrete enforcement, a closed memory cycle of the closed memory block of this annular goes up maximum storage m and opens the value document data, and m is the natural number greater than 1;
It is t that 25 couples of i of memory module open the moment that the value document data storage finishes
i, the moment that (i+m-1) value document data storage is finished is t
I+m-1
The legitimacy that 26 couples of i of identification module open value document is discerned is engraved in t when initial
iTo t
I+m-1Between, and i opened the time overhead T that value document is discerned
iSatisfy: T
i≤ (t
I+m-1-t
i).
As shown in Figure 6, monitoring modular 23 specifically comprises image acquisition device 231 and verification unit 232, and is as follows:
Further, identification module 26 comprises at least one recognition unit, and as shown in Figure 7, this recognition unit specifically comprises even paper money discriminating unit 261 and legitimacy discriminating unit 262, and is as follows:
Connect paper money discriminating unit 261, be used for the picture altitude of value document is compared with the height threshold that presets, if the picture altitude of described value document judges then that less than described height threshold described value document is individual value document; Otherwise, judge that described value document is to connect paper money, returns processing;
Preferably, identification module 26 comprises a plurality of recognition units; A plurality of recognition units are according to the recognition sequence of value document, to the identification that walks abreast of the legitimacy of different value documents.
As shown in Figure 5, optionally, the value document recognition system of present embodiment also comprises counter 27, paper money storage box 28 and money back module 29.Wherein, counter 27 is used for the value document that connects paper money, legal value document or the quantity of illegal value document are counted; Paper money storage box 28 is used to receive legal value document; Money back module 29 is used to return illegal value document.
Need to prove, the value document recognition system that the embodiment of the invention provides, it is to the identification process of value document, and is identical with the flow process of valuable document recognition method in the foregoing description, does not repeat them here.
The value document recognition system that the embodiment of the invention provides, the value document data in turn are stored in annular closed memory block, and the storage space of adjacent two value document data joins, and avoids storage space by vacant, save storage resources, improved operating factor of memory space.And the storage space of annular closed memory block is recycled ground and repeatedly uses, and for data storage provides enough spaces, can realize continuous acquisition, the storage of many value documents.In addition, the false triggering of recognition system has also been avoided in the arrival that the embodiment of the invention is come the active monitoring value document according to the gradation of image value of sample area, improves the reliability of recognition system.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (10)
1. a valuable document recognition method is characterized in that, comprising:
According to the gradation of image value of sample area, judge whether value document enters sample area; If then gather the value document data;
The value document data storage that collects is arrived annular closed memory block, and the start address and the end address of writing down the storage space of every value document data; Wherein, i opens the end address of the storage space of value document data and continues mutually with the start address that (i+1) opens the storage space of value document data, after the closed memory block of described annular was filled with, data afterwards covered the longest data of resting period in the closed memory block of described annular; I is the natural number more than or equal to 1;
According to the start address and the end address of the storage space of every value document data, from the closed memory block of annular, read every value document data according to the order of first in first out, the legitimacy of every value document is discerned.
2. valuable document recognition method as claimed in claim 1 is characterized in that, a closed memory cycle of the closed memory block of described annular goes up maximum storage m and opens the value document data, and m is the natural number greater than 1;
It is t that i opens the moment that the value document data storage finishes
i, the moment that (i+m-1) value document data storage finishes is t
I+m-1
When being opened initial that the legitimacy of value document discerns, i is engraved in t
iTo t
I+m-1Between, and i opened the time overhead T that value document is discerned
iSatisfy: T
i≤ (t
I+m-1-t
i).
3. valuable document recognition method as claimed in claim 1 or 2 is characterized in that, described gradation of image value according to sample area judges that whether value document enters the method for sample area, specifically comprises:
Gather the present image of sample area, the gray-scale value of present image and the gray-scale value of uncalibrated image are compared, obtain both similarities; If similarity is less than or equal to the first threshold that presets, judge that then value document does not enter sample area; If similarity more than or equal to second threshold value that presets, judges that then value document enters sample area; Otherwise, judge that image acquisition device breaks down;
Wherein, described uncalibrated image is the image of described sample area under no foreign object blocks, and described second threshold value is greater than described first threshold.
4. valuable document recognition method as claimed in claim 3 is characterized in that, the described method that the legitimacy of every value document is discerned specifically comprises:
The picture altitude of value document is compared with the height threshold that presets, if the picture altitude of described value document judges then that less than described height threshold described value document is individual value document; Otherwise, judge that described value document is to connect paper money, returns processing;
After judging that described value document is individual value document, the legitimacy of described value document is differentiated, if legal, then receive described value document; Otherwise, return processing.
5. valuable document recognition method as claimed in claim 4 is characterized in that described method has disposed a plurality of recognition units, is used for the recognition sequence according to value document, to the identification that walks abreast of the legitimacy of different value documents.
6. a value document recognition system is characterized in that, comprising:
Monitoring modular is used for the gradation of image value according to sample area, judges whether value document enters sample area;
Acquisition module is used for gathering the value document data after described monitoring modular judges that value document enters sample area;
Memory module, the value document data storage that is used for described acquisition module is collected is to annular closed memory block, and the start address and the end address of writing down the storage space of every value document data; Wherein, i opens the end address of the storage space of value document data and continues mutually with the start address that (i+1) opens the storage space of value document data, after the closed memory block of described annular was filled with, data afterwards covered the longest data of resting period in the closed memory block of described annular; I is the natural number more than or equal to 1;
Identification module is used for start address and end address according to the storage space of every value document data, reads every value document data according to the order of first in first out from the closed memory block of annular, and the legitimacy of every value document is discerned.
7. value document recognition system as claimed in claim 6 is characterized in that, a closed memory cycle of the closed memory block of described annular goes up maximum storage m and opens the value document data, and m is the natural number greater than 1;
It is t that described memory module is opened the moment that the value document data storage finishes to i
i, the moment that (i+m-1) value document data storage is finished is t
I+m-1
Described identification module is engraved in t when i is opened initial that the legitimacy of value document discerns
iTo t
I+m-1Between, and i opened the time overhead T that value document is discerned
iSatisfy: T
i≤ (t
I+m-1-t
i).
8. as claim 6 or 7 described value document recognition systems, it is characterized in that described monitoring modular specifically comprises:
Image acquisition device is used to gather the present image of sample area;
Verification unit is used for the gray-scale value of the present image of sample area and the gray-scale value of uncalibrated image are compared, and obtains both similarities; If similarity is less than or equal to the first threshold that presets, judge that then value document does not enter sample area; If similarity more than or equal to second threshold value that presets, judges that then value document enters sample area; Otherwise, judge that image acquisition device breaks down;
Wherein, described uncalibrated image is the image of described sample area under no foreign object blocks; Described second threshold value is greater than described first threshold.
9. value document recognition system as claimed in claim 8 is characterized in that described identification module comprises at least one recognition unit, and described recognition unit specifically comprises:
Connect the paper money discriminating unit, be used for the picture altitude of value document is compared with the height threshold that presets, if the picture altitude of described value document judges then that less than described height threshold described value document is individual value document; Otherwise, judge that described value document is to connect paper money, returns processing;
The legitimacy discriminating unit is used for after described even paper money discriminating unit judges that value document is individual value document the legitimacy of described value document being differentiated, if legal, then receives described value document; Otherwise, return processing.
10. value document recognition system as claimed in claim 9 is characterized in that described identification module comprises a plurality of recognition units;
A plurality of recognition units are according to the recognition sequence of value document, to the identification that walks abreast of the legitimacy of different value documents.
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| CN2010102952256A CN101968903B (en) | 2010-09-21 | 2010-09-21 | Valuable file identification method and system |
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| CN2010102952256A CN101968903B (en) | 2010-09-21 | 2010-09-21 | Valuable file identification method and system |
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| CN101968903B CN101968903B (en) | 2012-08-29 |
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| CN103456075A (en) * | 2013-09-06 | 2013-12-18 | 广州广电运通金融电子股份有限公司 | Paper money processing method and device |
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