CN102622573A - Method for decoding micro code array and method for encoding and decoding micro code array - Google Patents
Method for decoding micro code array and method for encoding and decoding micro code array Download PDFInfo
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Abstract
The invention provides a method for decoding a micro code array and a method for encoding and decoding the micro code array. The method for decoding the micro code array comprises the following steps of: scanning the micro code array to form an image; judging whether the image comprises a complete direction coordinate code; if the image comprises the complete direction coordinate code, determining coordinates of the image in the micro code array by decoding the direction coordinate code; if the image does not comprise the complete direction coordinate code, executing the following steps; dividing the image into a plurality of micro code point groups according to a header area of each micro code square block; combining the micro code point groups which belong to the same direction coordinate code in two adjacent columns according to the header area of each micro code square block to form the coordinate code before rearrangement; exchanging the positions of the micro code point groups in the coordinate code before rearrangement, which belong to different micro code square blocks, to form a rearranged coordinate code; and determining the coordinates of the image in the micro code array by decoding the rearranged coordinate code.
Description
The application is that the name of submitting on 04 21st, 2009 is called the dividing an application of Chinese invention patent application 200910135538.2 of " coding method, coding/decoding method and the Code And Decode method of small sign indicating number array ".
Technical field
The present invention relates to a kind of coding method, coding/decoding method and Code And Decode method, particularly a kind of coding method, coding/decoding method and Code And Decode method of small sign indicating number array.
Background technology
Please with reference to shown in Figure 1, it has shown a kind of existing hand-written information reading system, and this system comprises read-write media 91 and scanister 92.Be formed with small sign indicating number array on the said read-write media 91, this array comprises a plurality of sizes can be by the position code 911 of vision ignorance.
Please with reference to shown in Fig. 2 a and Fig. 2 b, each position code 911 comprises header district 9111 and data field 9112 usually, and wherein the allocation position of small code-point 9113 (microdot) is all inequality in the data field 9112 of each position code 911; And the allocation position of small code-point 9113 is all identical in the header district 9111 of each position code 911.Fig. 2 b representes the small code-point 9113 that the position code 911 shown in Fig. 2 a is comprised just have the position of small code-point 9113 to represent with digital bit " 1 " drafting with the scale-of-two bit; There is not the position of small code-point 9113 to represent and draw with digital bit " 0 ".
Said scanister 92 has image sensor 921, and this image sensor 921 is used to capture the image of said position code 911.By this; User's this scanister 92 capable of using is write on said read-write media 91; Processing unit is then with data field 9112 images of said image sensor 921 position code that captures 911 and database comparison, with position and the operating state of judging that said scanister 92 is present.Yet existing hand-written information reading system has following point at least: the bigger storage space of (1) needs is stored position codes 911 all in the small sign indicating number array and is carried out the image comparison for processing unit; (2) said image sensor 921 all must be able to capture at least one complete position code 911 image at any time and compares for image, so this image sensor 921 needs the sensing array (sensing array) of large-size.Yet these system requirements all can increase the system cost of hand-written information reading system.
In view of this; The present invention proposes a kind of Code And Decode method of small sign indicating number array; It utilizes reflection Gray code (reflected gray code) to carry out Code And Decode, the position uncertain (ambiguity) that is produced in the time of can reducing system requirements and reduction and eliminate decoding.
Summary of the invention
The present invention proposes a kind of Code And Decode method of small sign indicating number array; This method utilization reflection Gray code carries out the Code And Decode of small sign indicating number array; And will reflect the periphery that low bit in the Gray code is drawn on small sign indicating number square, the uncertainty that is produced when reducing decoding.
The present invention also proposes a kind of Code And Decode method of small sign indicating number array, and it utilizes the reflection Gray code to carry out the Code And Decode of small sign indicating number array, has better simply decoding program.
The present invention proposes a kind of coding method of small sign indicating number array; This method comprises: in the small sign indicating number a plurality of small sign indicating number data field that square comprised that array comprised; Coded system with the reflection Gray code is drawn on a plurality of small code-points in the said data field, wherein is used to represent to reflect the periphery that small code-point that Gray code hangs down bit is drawn on said data field.
The present invention also proposes a kind of coding/decoding method of small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Each small sign indicating number square comprises header district and data field; This data field utilizes the coded system of reflection Gray code to draw has a plurality of small code-points to form at least one direction coordinate sign indicating number, and said coding/decoding method comprises the following steps: to scan said small sign indicating number array to form an image; Judge whether this image comprises a complete direction coordinate sign indicating number; When said image comprises a complete direction coordinate sign indicating number, then according to should the decoding of complete direction coordinate sign indicating number deciding said image to be positioned at the coordinate of said small yard array; When said image does not comprise a complete direction coordinate sign indicating number, then carry out the following step: said image area is divided into a plurality of small code-point group according to the header district of each small sign indicating number square; According to the header district of each small sign indicating number square the small code-point group that belongs to equidirectional coordinate sign indicating number in two adjacent columns is formed the coordinate sign indicating number before the reorganization; With the small code-point group location swap that belongs to different small sign indicating number squares in the coordinate sign indicating number before this reorganization to form the coordinate sign indicating number after the reorganization; And decide said image to be arranged in the coordinate of said small sign indicating number array according to the coordinate sign indicating number after this reorganization decoding.
The present invention also proposes a kind of coding/decoding method of small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Each small sign indicating number square comprises header district and data field; This data field utilizes the coded system of reflection Gray code to draw has a plurality of small code-points to form at least one direction coordinate sign indicating number, and the small code-point that is used to represent to reflect the low bit of Gray code is drawn on the periphery of said direction coordinate sign indicating number, and said coding/decoding method comprises the following steps: to scan said small sign indicating number array to form an image; Judge whether this image comprises a complete direction coordinate sign indicating number; When said image comprises a complete direction coordinate sign indicating number, decide said image to be positioned at the coordinate of said small sign indicating number array according to this complete direction coordinate sign indicating number decoding; When said image does not comprise a complete direction coordinate sign indicating number, then carry out the following step: said image area is divided into a plurality of small code-point group according to the header district of each small sign indicating number square; And the coordinate that is arranged in said small sign indicating number array with the direction coordinate sign indicating number of the small sign indicating number square under the small code-point group that comprises the low bit of reflection Gray code as said image.
The present invention also provides a kind of coding/decoding method of small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Draw according to the reflection Gray code this small sign indicating number data field that square comprised has a plurality of small code-points; And the small code-point that is used to represent to reflect the low bit of Gray code is drawn on the periphery of said data field, and said coding/decoding method comprises: scan said small sign indicating number array in the hope of an image, and pick out the small code-point group of the data field of each small sign indicating number square in this image; And utilize the affiliated small sign indicating number square of small code-point group that comprises the low bit of reflection Gray code to decode said image pairing coordinate in said small sign indicating number array.
The present invention also provides a kind of Code And Decode method of small sign indicating number array; This method comprises the following steps: in the small sign indicating number a plurality of small yard data field that square comprised that array comprised; Coded system with the reflection Gray code is drawn on a plurality of small code-points in the said data field, wherein is used to represent to reflect the periphery that small code-point that Gray code hangs down bit is drawn on said data field; Scan said small sign indicating number array in the hope of an image, and pick out the small code-point group of the data field of each small sign indicating number square in this image; And utilize the affiliated small sign indicating number square of small code-point group that comprises the low bit of reflection Gray code to decode said image pairing coordinate in said small sign indicating number array.
In the Code And Decode method of small sign indicating number array of the present invention, utilize the reflection specific change rule that Gray code had to carry out the Code And Decode of position code, therefore need not utilize all position codes on the memory means record read-write media; And be drawn on the periphery of data field through the low bit that will reflect Gray code, it is uncertain to use the position that is produced when reducing decoding; Can check simultaneously the uncertainty of position when eliminating decoding through the balance bit in header district.In addition, the present invention can further divide position scale according to the distance between the center of the small sign indicating number square under this image after the center of image that image sensor captures and the decoding, with the location resolution degree of the coding/decoding method that increases small sign indicating number array.
Description of drawings
Fig. 1 has shown the synoptic diagram of existing hand-written information reading system.
Fig. 2 a has shown the synoptic diagram of position code in the existing hand-written information reading system.
Fig. 2 b has shown another synoptic diagram of the position code of Fig. 2 a, and wherein small sign indicating number is represented with the scale-of-two bit.
Fig. 3 has shown the synoptic diagram of the method that forms one group of reflection Gray code.
Fig. 4 has shown that utilization reflection Gray code carries out the synoptic diagram of encoding in the data field in the embodiment of the invention.
Fig. 5 has shown the synoptic diagram of coding method of the small sign indicating number array of the embodiment of the invention.
Fig. 6 a has shown the synoptic diagram of the small code-point of part of four adjacent small sign indicating number squares of image sensor acquisition in the embodiment of the invention.
Fig. 6 b has shown the synoptic diagram of coding/decoding method of the small sign indicating number array of the embodiment of the invention.
Fig. 7 a has shown another synoptic diagram of the small code-point of part of four adjacent small sign indicating number squares of image sensor acquisition in the embodiment of the invention.
Fig. 7 b has shown another synoptic diagram of coding/decoding method of the small sign indicating number array of the embodiment of the invention.
Fig. 8 a has shown another synoptic diagram of the small code-point of part of two adjacent small sign indicating number squares of image sensor acquisition in the embodiment of the invention.
Fig. 8 b has shown another synoptic diagram of the small code-point of part of two adjacent small sign indicating number squares of image sensor acquisition in the embodiment of the invention.
Fig. 9 has shown the synoptic diagram of resolution of the coding/decoding method of the small sign indicating number array that is used to promote the embodiment of the invention.
Figure 10 has shown the process flow diagram of coding/decoding method of the small sign indicating number array of the embodiment of the invention.
Figure 11 a has shown the synoptic diagram of the hand-written information reading system of the embodiment of the invention.
Figure 11 b has shown the synoptic diagram of coding method of the small sign indicating number array of the another kind of embodiment of the present invention.
Figure 12 has shown the synoptic diagram of decoding according to the coding method of the small sign indicating number array of Figure 11 b.
Figure 13 has shown the process flow diagram of coding/decoding method of the small sign indicating number array of the another kind of embodiment of the present invention.
Figure 14 a～14c has shown the synoptic diagram of coding method of the small sign indicating number array of the another kind of embodiment of the present invention respectively.
The main element symbol description
10 small yards square 11 header districts
12 data fields, 13 small code-points
The small code-point of the small code-point 132 balance bits of 131 headers
20 scanister, 21 image sensors
3 read media
X coordinate sign indicating number
I, I ', I ", I " ' image I
1～I
3Image
C
1～C
3The small sign indicating number of picture centre P square center
G
0～G
15Reflection Gray code x
0～x
7Reflection Gray code bit
y
0～y
7The small code-point of reflection Gray code bit A～D group
The small code-point S of group of A '～D '
1～S
7Step
H, V cut-off rule 91 read-write media
911 position codes, 9111 header districts
9112 data fields, 9113 small code-points
92 scanister, 921 image sensors
Embodiment
For let above-mentioned and other purposes of the present invention, feature and advantage can be more obvious, hereinafter will cooperate appended diagram, elaborate as follows.In addition, need to prove that in explanation of the present invention, identical member is with identical symbolic representation.
The characteristic and the formation method of 1 group of reflection Gray code at first, are described.Please with reference to shown in Figure 3, it has shown the formation method of 1 group of 4 bit reflection Gray code.The fundamental property of reflection Gray code comprises: (1) any two adjacent reflection Gray codes only have the difference of a bit, and just, the Hamming distance (hamming distance) between these two adjacent reflection Gray codes is 1; One of them is strange reflection Gray code for said two adjacent reflection Gray codes; And another one is an idol reflection Gray code; One of them strange reflection Gray code includes odd number numeral bit " 1 " (bit 1), and an idol reflection Gray code includes even number numeral bit " 1 "; When (2) value of an idol reflection Gray code being added 1 back and produces another strange reflection Gray code, as long as the least significant bit (LSB) unit (least significant bit) that changes in the said idol reflection Gray code can obtain said strange reflection Gray code; When (3) a strange value that reflects Gray code being added another idol reflection Gray code of 1 back generation, need only the adjacent bit in left side that changes the bit 1 of the rightmost side in the said strange reflection Gray code, can obtain said even reflection Gray code.To indicate the reflection reflectivity properties that Gray code had in order in Fig. 3, knowing, will to reflect Gray code with several horizontal straight lines and be divided into different set; Wherein, The horizontal straight line that Fig. 3 is used for dividing the reflection Gray code is a virtual catoptron for the symmetry reflection Gray code of both sides up and down for this horizontal straight line, and 1 (the most significant bit) of highest significant position unit that one of only can be therein between the reflection Gray code of two groups of mutual tool symmetry reflectivity properties produces the difference of bit 0 and bit 1.It is known that being defined as of above-mentioned virtual catoptron known reflection Gray code correlation technique person, so no longer give unnecessary details in detail in addition.In addition, those skilled in the art's identical mode capable of using forms the reflection Gray code of different bit numbers, for example one group of 8 bit reflection Gray code.
Please extremely shown in Figure 5 with reference to Fig. 4, it has shown small sign indicating number square 10 of an embodiment of the present invention and the synoptic diagram of small sign indicating number array M respectively.A plurality of small sign indicating number squares 10 are distributed on the read-write media 3 forming small sign indicating number array M (as shown in Figure 5), and each small sign indicating number square 10 is used for indicating the different coordinates of this small sign indicating number array M.This small sign indicating number square 10 comprises header district 11 and data field 12; The position that is indicated with digital bit " 1 " in wherein said header district 11 and the data field 12 can be drawn into the small code-point 13 of Any shape; For example rectangle code-point, circular code-point, triangle code-point, straight line code-point and cross code-point etc., but be not limited to this; And can give blank in the position that digital bit " 0 " is indicated; Yet said configuration mode also can use opposite mode to implement, and just, can give blank and can draw the small code-point 13 of Any shape with the position that digital bit " 0 " is indicated with the position that digital bit " 1 " is indicated.Except represent " 0 " or " 1 " of digital bit with whether existing of small code-point 13, can also utilize size, pattern or the left and right sides upper-lower position of small code-point 13 to represent " 0 " or " 1 " of digital bit.Just, all do not depart from the scope of the present invention as long as can pick out the drafting mode of at least two kinds of small code-points 13 of difference.
The small code-point 132 of balance bit that the header district 11 of each small sign indicating number square 10 comprises the small code-point 131 of the header with fixed pattern and is used to represent the parity value of different directions coordinate; Wherein the small code-point 132 of this balance bit is used to carry out coordinates correction; And according to various embodiment, the small code-point 132 of this balance bit can be implemented; All draw with the form of array the data field 12 of each small sign indicating number square 10 has small code-point inequality 13 configurations for identification.By this, can judge that each small sign indicating number square 10 is arranged in coordinate or the position of said small sign indicating number array M according to the drafting position and the situation of small code-point 13 in the said data field 12.In the present embodiment, said data field 12 comprises X coordinate sign indicating number
With Y coordinate sign indicating number
Wherein said X coordinate sign indicating number
The reflection Gray code x of one 8 bit of middle configuration
0～x
7, and x
0Represent this coordinate sign indicating number
Least significant bit (LSB) unit, and x
7Represent this coordinate sign indicating number
Highest significant position unit; Said Y coordinate sign indicating number
In also dispose the reflection Gray code y of one 8 bit
0～y
7, and y
0Represent this coordinate sign indicating number
Least significant bit (LSB) unit, and y
7Represent this coordinate sign indicating number
Highest significant position unit.In this embodiment, the digital bit " 1 " of reflection Gray code is drawn has small code-point 13, and the digital bit " 0 " of reflection Gray code is given blank.N coordinate of X change in coordinate axis direction among the said small sign indicating number array M of said X coordinate sign indicating number
expression; And m coordinate of Y change in coordinate axis direction among the said small sign indicating number array M of Y coordinate sign indicating number
expression, wherein the X change in coordinate axis direction is orthogonal to the Y change in coordinate axis direction.In other embodiments; Said X coordinate sign indicating number
and said Y coordinate sign indicating number
can become the reflection Gray code of other bit numbers, for example 16 bits, 32 bits etc. according to the size configure of said small sign indicating number array M.
Please refer again to shown in Figure 5ly, it has shown the synoptic diagram of the small sign indicating number square 10 formed small sign indicating number array M that utilize Fig. 4.To will be appreciated that among Fig. 5 the characteristic that shows small sign indicating number square 10 in order knowing, to have amplified the size of each small sign indicating number square 10 and the distance between the small sign indicating number square 10.When implementing, but the size of said small sign indicating number square 10 compact configuration and this small sign indicating number square 10 can form the negligible microsize of vision.In said small sign indicating number array M, the X coordinate sign indicating number in the said small sign indicating number square 10
Can be from left to right or from right to left (X-direction) dispose in regular turn; And Y coordinate sign indicating number
Can be from top to bottom or from bottom to up (Y direction) dispose in regular turn, wherein described herein disposes according to the G shown in Fig. 3 in regular turn
0, G
1, G
2Order be configured.For example among Fig. 5, the X coordinate sign indicating number of said small sign indicating number the 1st position, array M upper left side is configured to
(" 00000000 "); And Y coordinate sign indicating number is configured to
(" 00000000 "); Just; In this small sign indicating number array M; The setting coordinate of the small sign indicating number square 10 of the 1st position, upper left side is (0,0).In the configuration of X change in coordinate axis direction, with G
0Next Gray code G
1(please with reference to Fig. 3) is disposed at the right side of coordinate for the small sign indicating number square 10 of (0,0), so coordinate be that the X coordinate sign indicating number of the small yard square 10 of (1,0) is configured to
(" 00000001 "), and since this moment the Y change in coordinate axis direction the position do not change, so coordinate be that the Y coordinate sign indicating number of the small yard square 10 of (1,0) still does
(" 00000000 "); And dispose the X coordinate sign indicating number and the Y coordinate sign indicating number of small sign indicating number square 10 in regular turn one by one to the right side of Fig. 5 (X change in coordinate axis direction) with this.In the configuration of Y change in coordinate axis direction, with Gray code G
0Next Gray code G
1Be disposed at the downside of coordinate, so coordinate be that the Y coordinate sign indicating number of the small yard square 10 of (0,1) is configured to for the small sign indicating number square 10 of (0,0)
(" 00000001 "), and since this moment the X change in coordinate axis direction the position do not change, so coordinate be that the X coordinate sign indicating number of the small yard square 10 of (0,1) still does
(" 00000000 "); And dispose the Y coordinate sign indicating number and the X coordinate sign indicating number of small sign indicating number square 10 according to this in regular turn one by one to the downside (Y change in coordinate axis direction) of Fig. 5.By this, can form a planimetric coordinates space, and in this planimetric coordinates space each small sign indicating number square 10 all have alone coordinate (n, m).By this; When the capturing images unit that utilizes scanister 20 21 captures the complete image of each small sign indicating number square 10; Processing unit (not illustrating) then can judge that the said scanister 20 present images that capture are positioned at the coordinate (n of said small sign indicating number array M according to X coordinate sign indicating number
and Y coordinate sign indicating number
; M), judge the operating state of these scanister 20 and according to a plurality of consecutive images that said scanister 20 is captured.
The small code-point 131 of header in the header district 11 of each small sign indicating number square 10 is drawn on this header district 11 identically; First last position of row that the small code-point 132 of said balance bit for example can be separated by whenever that first last position of row that row are drawn on said header district 11 is used to carry out the coordinates correction of X change in coordinate axis direction or the delegation of whenever being separated by is drawn on said header district 11 is used to carry out the coordinates correction of Y change in coordinate axis direction, and the small code-point 131 of wherein said header can have different patterns (pattern) with the small code-point 132 of said balance bit.For example among Fig. 5, X coordinate sign indicating number
is all drawn has the small code-point 132 of balance bit; And Y coordinate sign indicating number
is also drawn the small code-point 132 of balance bit is arranged.Yet the small code-point 132 of this balance bit also can utilize other modes to draw, and the diverse location up and down of 11 same positions, header district that for example can be drawn on each small sign indicating number square 10 is to represent the coordinate bit of both direction simultaneously.
Yet the most of image of said scanister 20 in the image that said small sign indicating number array M is captured not is the complete image of a small sign indicating number square 10.The present invention also can judge that the said scanister 20 present images that capture are positioned at the coordinate of said small sign indicating number array M according to the part image of each small sign indicating number square 10.
The then decoding process of explanation when the image sensor 21 of said scanister 20 captures the small code-point 13 of the part of a plurality of small yard squares 10 simultaneously.Please with reference to shown in Fig. 6 a, it has shown the image I that four adjacent small sign indicating number squares 10 and said image sensor 21 are captured, and comprises the small code-point 13 of part in each the small sign indicating number square 10 in 4 small sign indicating number squares 10 in this image I.Reflection Gray code according to shown in Figure 3 can know, the position coordinates of said small sign indicating number square 10 representatives be respectively
and
wherein in the header district 11 of each small sign indicating number square 10 all with the position at the small code-point of the rectangle 13 digital bits of expression " 1 " places; In the data field 12 then with digital bit " 1 " and " 0 " presentation code mode.It must be appreciated that vertical dotted line V that is illustrated among Fig. 6 a and horizontal dotted line H only are used for when explanation, dividing the zone that each small sign indicating number square 10 is comprised, said dotted line V, H can't be drawn on the said read-write media 3 when implementing.In addition, for simplicity of illustration, omitted the label of small sign indicating number square 10, header district 11 and data field 12 among Fig. 6 a.
In when decoding, at first processing unit (not illustrating) can be told the zones of different under each small code-point group according to the header district 11 of each small sign indicating number square 10.For example in Fig. 6 a, comprise four the small code-point A of group, B, C and D in the said image I, and the said small code-point A of group and B belongs to Y coordinate sign indicating number and said small code-point C of group and D belong to X coordinate sign indicating number.
Then please with reference to shown in Fig. 6 b, it has shown the synoptic diagram that processing unit is decoded according to the image I of Fig. 6 a.In X coordinate sign indicating number; With the said small code-point C of group and D location swap to form the X coordinate sign indicating number " 00000110 " after the reorganization; After the decoding identification; X coordinate sign indicating number after this reorganization is that
is in Y coordinate sign indicating number; With the said small code-point A of group and B location swap to form the Y coordinate sign indicating number " 00000111 " after the reorganization; After the decoding identification; Y coordinate sign indicating number after the said reorganization image I that the last then said scanister 20 of decidable is captured for
is arranged in the coordinate of small sign indicating number array M (4,5) at present.By this; In the encoding and decoding method of small sign indicating number array of the present invention; Because the reflection Gray code has certain Changing Pattern; Therefore need not utilize a large amount of position code information of memory means record, capturing images unit 21 image that captures that only need utilize algorithm to get final product identification scanister 20 is arranged in the corresponding coordinate of small sign indicating number array M.In addition, but the coding/decoding method of small sign indicating number array of the present invention also the incomplete a plurality of small sign indicating number squares 10 of the identification row-coordinate of going forward side by side judge.
In the explanation of Fig. 6 a and Fig. 6 b; / 4th small code-points 13 of each small sign indicating number square 10 of said capturing images unit 21 acquisitions are to decode; When this capturing images unit 21 captured the small code-point 13 of different numbers simultaneously in the data field 12 of the small sign indicating number of difference square 10, aforementioned manner also capable of using was decoded.Please with reference to shown in Fig. 7 a, its shown image I among Fig. 6 a towards the upper left side oblique move a small code-point 13 apart from the time situation, this moment, this image was with I ' sign.Likewise, according to the header district 11 of each small sign indicating number square 10, image I ' can be divided into equally four the small code-point A ' of group, B ', C ' and D '.This small code-point A ' of group has 9 small code-points 13, and it comprises the small code-point A of group of X coordinate
X' and the small code-point A of group of Y coordinate
Y'; The small code-point B ' of group has 3 small code-points 13, and it comprises the small code-point B of group of X coordinate
X' and the small code-point B of group of Y coordinate
Y'; The small code-point C ' of group has 3 small code-points 13, and it is Y coordinate sign indicating number; The small code-point D ' of group has 1 small code-point 13, and it belongs to Y coordinate sign indicating number.
Please with reference to shown in Fig. 7 b, it has shown the synoptic diagram of processing unit according to image I among Fig. 7 a ' decode.In X coordinate sign indicating number; At first can know that according to the header district 11 of said small sign indicating number square 10 the said small code-point C ' of group and D ' belong to first row of X coordinate sign indicating number, so the arrangement mode of the said small code-point A ' of group, B ', C ' and D ' is reassembled as after identification shown in figure below of Fig. 7 b.Then, according to aforementioned manner, in X coordinate sign indicating number, with said small code-point D ' of group and B
X' position and said small code-point C ' of group and A
X' location swap to form the X coordinate sign indicating number " 00000010 " after the reorganization, after the identification of decoding, the X coordinate sign indicating number after this reorganization does
In Y coordinate sign indicating number, with the small code-point B of group
Y' position and the small code-point A of group
Y' location swap to form the Y coordinate sign indicating number " 00000111 " after the reorganization, after the identification of decoding, the Y coordinate sign indicating number after this reorganization does
The coordinate of the small sign indicating number array M of last then image I that decidable scanister 20 captured ' be arranged at present is (3,5).In addition, when the small code-point of different 4 of image sensor 21 acquisition group, aforesaid way all capable of using is decoded.
In another kind of embodiment, said image sensor 21 possibly only capture two neighbouring small sign indicating number squares 10, and can directly directly judge coordinate according to X coordinate sign indicating number and Y coordinate sign indicating number this moment.For example shown in Fig. 8 a; It has shown the image I of image sensor 21 acquisitions " synoptic diagram; wherein this image I " comprises the small code-point A of group " and the small code-point C of group ", and " comprise the small code-point A of group of X coordinate according to the small code-point A of group of header district 11 decidables of each small sign indicating number square 10
X" with the small code-point A of group of Y coordinate
Y".The small code-point C of group of header district 11 decidables according to each small sign indicating number square 10 " first row that should belong to X coordinate sign indicating number, so image I " comprise complete X coordinate sign indicating number, it is by the small code-point C of group " and A
X" form.By this, the X coordinate sign indicating number of can recombinating out is " 00000010 ", and after the decoding identification, this X coordinate sign indicating number does
In like manner, because image I " comprises complete Y coordinate sign indicating number, the just small code-point A of group
Y", the Y coordinate sign indicating number of can directly recombinating out is " 00000111 ", and after the decoding identification, this Y coordinate sign indicating number does
In another kind of embodiment, said image sensor 21 possibly only capture two small sign indicating number squares 10 that the left and right sides is adjacent.At this moment, also can solve the XY coordinate with similar method.
In another kind of embodiment, please with reference to shown in Fig. 8 b, it has shown the image I that said image sensor 21 is captured " ' synoptic diagram, wherein image I " ' comprise the small code-point A of group " ' with the small code-point C of group " '.At this moment; Because image I " ' comprise complete X coordinate sign indicating number; the just small code-point A of group " '; And complete Y coordinate sign indicating number; Just small code group group C " ', can judge directly that therefore X coordinate sign indicating number is for
Y coordinate sign indicating number is
In addition; In order to increase the degree of accuracy of location determination; In the Code And Decode method of small sign indicating number array of the present invention, can be according to further three scales of division between the adjacent small sign indicating number coordinates of two in small sign indicating number array M of the distance between the coordinate of small sign indicating number array M under the center of image I and this image I.The mode of definition is please with reference to shown in Figure 9, and it has shown the synoptic diagram when image sensor 21 acquisition diverse location sign indicating numbers 13 images.For the purpose of simplifying the description, only describe, and the dividing mode of Y direction is same as directions X with directions X here.Among Fig. 9, false coordinate is that small sign indicating number square 10 centers of (3,5) are P (3,5); Coordinate is that small sign indicating number square 10 centers of (4,5) are P (4,5).When image sensor 21 acquisition image I
1The time, the X coordinate sign indicating number after aforementioned manner obtains recombinating is " 00000010 ", so this image I
1Coordinate be judged as (3,5); This moment is according to image I
1Center C
1Can determine a coordinate scale with the distance of a P (3,5).When image sensor 21 acquisition image I
2The time, the X coordinate sign indicating number after aforementioned manner obtains recombinating is " 00000110 ", so image I
2Coordinate be judged as (4,5); This moment is according to image I
2Center C
2Can determine another coordinate scale with the distance of a P (4,5).When image sensor 21 acquisition image I
3The time, the X coordinate sign indicating number after aforementioned manner obtains recombinating is " 00000110 ", so image I
3Coordinate be judged as (4,5); This moment is according to image I
3Center C
3Can determine a coordinate scale again with the distance of a P (4,5).By this, the degree of accuracy of location determination in the time of can increasing decoding.
Please with reference to shown in Figure 10, it has shown the process flow diagram of coding/decoding method of the small sign indicating number array of the embodiment of the invention, and it comprises the following steps: to scan small sign indicating number array to form an image (step S1); Judge whether this image comprises a complete direction coordinate sign indicating number (step S2); If decide said image to be positioned at the coordinate (step S3) of said small sign indicating number array according to this direction coordinate sign indicating number decoding; If not, the header district according to each small sign indicating number square is divided into a plurality of small code-point groups (step S4) with said image area; Header district according to each small sign indicating number square utilizes the preceding coordinate sign indicating number (step S5) of small code-point group's formation reorganization that belongs to equidirectional coordinate sign indicating number in two adjacent columns; With the small code-point group location swap that belongs to different small sign indicating number squares in the coordinate sign indicating number before this reorganization to form the coordinate sign indicating number (step S6) after the reorganization; And decide said image to be arranged in the coordinate (step S7) of said small sign indicating number array according to the decoding of the coordinate sign indicating number after this reorganization, wherein also comprise the following steps: among this step S7 to come a plurality of coordinate scales of division between two adjacent small sign indicating number squares with the distance between the coordinate under this image according to the center of said image.
The present invention also proposes a kind of Code And Decode method of small sign indicating number array.Please with reference to shown in Figure 11 a and Figure 11 b, the small sign indicating number array M ' of the another kind of embodiment of the present invention comprises a plurality of small sign indicating number squares 10 equally, and these a plurality of small sign indicating number squares 10 are arranged in the form of array and read media 3.Each small sign indicating number square 10 comprises header district 11 and data field 12 equally.This data field 12 comprise equally X coordinate sign indicating number
and Y coordinate sign indicating number
the present invention with before the difference of a kind of embodiment be; In the present embodiment, the small code-point 13 that is used for representing reflecting the low bit of Gray code in the X coordinate sign indicating number
is drawn on the outermost of X change in coordinate axis direction in this X coordinate sign indicating number
(among the figure a left side or the rightmost side); And the small code-point 13 that is used for representing reflecting the low bit of Gray code in this Y coordinate sign indicating number
is drawn on the outermost (going up most among the figure or the lower side) of Y change in coordinate axis direction in this Y coordinate sign indicating number
, shown in Figure 11 b.The reason of so drawing is; In the reflection Gray code; The digital bit change frequency (promptly by " 0 " change " 1 " or " 1 " change " 0 ") of low bit is far above the digital bit change frequency of higher bit; Position uncertain (ambiguity) during therefore for the reduction decoding; Present embodiment will change the outermost that low faster bit is drawn on X coordinate sign indicating number or Y coordinate sign indicating number, therefore when image sensor 21 captures the part image of small sign indicating number square 10, can capture the low bit part of coordinate sign indicating number X or Y.In when decoding, then with the position coordinates decision of image X coordinate sign indicating number or Y coordinate sign indicating number for the small sign indicating number square 10 under the small code-point group that comprises the low bit of reflection Gray agate.
For example among Figure 12, the image I that image sensor 21 is captured ' the comprise small code-point A ' of group, B ', C ' and D '; Wherein at X coordinate sign indicating number x
0～x
7In, because the small code-point B ' of group comprises the minimum bit x of reflection Gray agate
0～x
2, so image I ' the X coordinate will be belonged to the small sign indicating number square 10 of right side one row by judgement; At Y coordinate sign indicating number y
0～y
7In, because the small code-point A ' of group comprises the minimum bit y of Y coordinate sign indicating number
0～y
3, so image I ' the Y coordinate will be belonged to the small sign indicating number square 10 of upside delegation by judgement.In this embodiment, last image I ' coordinate will be identified as and belong to top-right small sign indicating number square 10.In addition; In the coding/decoding method of the small sign indicating number array of present embodiment; Also can come between two adjacent small sign indicating number squares, to divide a plurality of coordinate scales like said center and the distance between the coordinate under this image according to image of Fig. 9, its dividing mode as previously mentioned, so repeat no more in this.
Therefore, the coding/decoding method of the small sign indicating number array of another kind of embodiment is of Figure 13 according to the present invention, and this method comprises the following steps: to scan small sign indicating number array to form an image (step S1); Judge whether this image comprises a complete direction coordinate sign indicating number (step S2); If decide said image to be arranged in the coordinate (step S3) of said small sign indicating number array according to this direction coordinate sign indicating number decoding; If not, the header district according to each small sign indicating number square is divided into a plurality of small code-point groups (step S4) with said image area; And be arranged in the pairing coordinate of small code-point array (step S8) as said image with the direction coordinate sign indicating number of the small sign indicating number square under the small code-point group that comprises the low bit of reflection Gray code, wherein also comprise the following steps: among the step S8 to come a plurality of coordinate scales of division between two adjacent small sign indicating number squares with the distance between the coordinate under this image according to the center of said image.In another kind of embodiment, in order to proofread and correct to the decoding coordinate, the coding/decoding method of small sign indicating number array of the present invention also comprises the following steps: the correction with the small code-point travel direction of balance bit coordinate sign indicating number.
In addition; Though in the previous embodiment; The direction of the two-dimensional coordinate axle of image I that image sensor 21 captured and I ' and the two-dimensional coordinate between centers of small sign indicating number array M and M ' is for consistent, when said image I and I ' and said small yard array M and both two-dimensional coordinate between centers of M ' have greater than 0 spend and less than 180 spend angle the time, the coding/decoding method of aforementioned small yard array of the present invention also capable of using is decoded; And decoding process as previously mentioned, repeats no more in this.
In addition, in the present embodiment, the drafting mode of the small code-point 13 of said data field 12 is not limited to the disclosed content of Figure 11 b.In X coordinate sign indicating number, the small code-point 13 that is used for representing reflecting the low bit of Gray code is disposed at the periphery of directions X, and the small code-point 13 of higher bit can arbitrarily be disposed in the X coordinate sign indicating number; In Y coordinate sign indicating number, the small code-point 13 that is used for representing reflecting the low bit of Gray code is disposed at the periphery of Y direction, and the small code-point 13 of higher bit can arbitrarily be disposed in the Y coordinate sign indicating number.For example shown in Figure 14 a～14c, the X change in coordinate axis direction is defined as the left and right directions among the figure, and the Y change in coordinate axis direction is defined as the above-below direction among the figure, and can define coordinate axis according to different embodiment when implementing.Said small code-point 13 is drawn on X coordinate sign indicating number zone and Y coordinate sign indicating number zone with the form of array.
As previously mentioned, the image that the image sensor of existing hand-written information reading system captured must comprise complete position code and need the sensing array of large-size, and this system must use memory storage to write down all position codes; Therefore existing hand-written information reading system needs the higher system cost.The present invention utilizes the reflection Gray code to carry out the Code And Decode of small sign indicating number array, only need utilize the fixedly Changing Pattern of reflection Gray code can carry out the decoding of small sign indicating number array, has lower system cost.In addition, the distance between the coordinate of the Code And Decode method of the small sign indicating number array of the present invention center that can further utilize the image that is captured and this image is divided more meticulous coordinate scale, the degree of accuracy of position when decoding to promote.
Though the present invention is disclosed through the foregoing description, right the foregoing description is not to be used to limit the present invention, and technician in the technical field is not breaking away from the spirit and scope of the present invention under any the present invention, should do various variations and modification.Therefore protection scope of the present invention should with appending claims the scope that defined be as the criterion.
Claims (12)
1. the coding/decoding method of a small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Each small sign indicating number square comprises header district and data field; This data field utilizes the coded system of reflection Gray code to draw has a plurality of small code-points to form at least one direction coordinate sign indicating number, and said coding/decoding method comprises the following steps:
Scan said small sign indicating number array to form an image;
Judge whether this image comprises a complete direction coordinate sign indicating number;
When said image comprises a complete direction coordinate sign indicating number, then decide said image to be positioned at the coordinate of said small sign indicating number array according to this direction coordinate sign indicating number decoding;
When said image does not comprise a complete direction coordinate sign indicating number, then carry out the following step:
According to the header district of each small sign indicating number square said image area is divided into a plurality of small code-point group;
According to the header district of each small sign indicating number square the small code-point group that belongs to equidirectional coordinate sign indicating number in two adjacent columns is formed the coordinate sign indicating number before the reorganization;
With the small code-point group location swap that belongs to different small sign indicating number squares in the coordinate sign indicating number before this reorganization to form the coordinate sign indicating number after the reorganization; And
Decoding decides said image to be arranged in the coordinate of said small sign indicating number array according to the coordinate sign indicating number after this reorganization.
2. coding/decoding method according to claim 1, this method also comprise the following steps: to come between two adjacent small sign indicating number squares, to divide a plurality of coordinate scales according to the distance between the center of said image and the said coordinate.
3. coding/decoding method according to claim 1, wherein said direction coordinate sign indicating number comprises the first coordinate sign indicating number and the second coordinate sign indicating number, and when said image did not comprise a complete direction coordinate sign indicating number, said coding/decoding method also comprised the following steps:
According to the header district of each small sign indicating number square the small code-point group that belongs to the said first coordinate sign indicating number in two adjacent columns is formed the first coordinate sign indicating number before the reorganization;
With the small code-point group location swap that belongs to different small sign indicating number squares in the first coordinate sign indicating number before this reorganization to form the first coordinate sign indicating number after the reorganization;
According to the header district of each small sign indicating number square the small code-point group that belongs to the said second coordinate sign indicating number in two adjacent columns is formed the second coordinate sign indicating number before the reorganization;
With the small code-point group location swap that belongs to different small sign indicating number squares in the second coordinate sign indicating number before this reorganization to form the second coordinate sign indicating number after the reorganization;
Decide said image to be arranged in said small sign indicating number pairing first coordinate of array and one second coordinate according to first coordinate sign indicating number after the said reorganization and the decoding of the second coordinate sign indicating number after the said reorganization; And
Define first coordinate axis of said small sign indicating number array and second coordinate axis of this first coordinate axis of quadrature, wherein said first coordinate corresponding to said first coordinate axis and said second coordinate corresponding to said second coordinate axis.
4. the coding/decoding method of a small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Each small sign indicating number square comprises header district and data field; This data field utilizes the coded system of reflection Gray code to draw has a plurality of small code-points to form at least one direction coordinate sign indicating number, and the small code-point that is used to represent to reflect the low bit of Gray code is drawn on the periphery of said direction coordinate sign indicating number, and said coding/decoding method comprises the following steps:
Scan said small sign indicating number array to form an image;
Judge whether this image comprises a complete direction coordinate sign indicating number;
When said image comprises a complete direction coordinate sign indicating number, decide said image to be positioned at the coordinate of said small sign indicating number array according to this direction coordinate sign indicating number decoding;
When said image does not comprise a complete direction coordinate sign indicating number, then carry out the following step:
According to the header district of each small sign indicating number square said image area is divided into a plurality of small code-point group; And
Be arranged in the coordinate of said small sign indicating number array as said image with the direction coordinate sign indicating number of the small sign indicating number square under the small code-point group that comprises the low bit of reflection Gray code.
5. coding/decoding method according to claim 4, wherein said direction coordinate sign indicating number comprises the first coordinate sign indicating number and the second coordinate sign indicating number, and when said image does not comprise a complete small sign indicating number square, said coding/decoding method also comprises the following steps:
Be positioned at first coordinate of said small sign indicating number array as said image with the first coordinate sign indicating number of the small sign indicating number square under the small code-point group that comprises the low bit of reflection Gray code;
Be positioned at second coordinate of said small sign indicating number array as said image with the second coordinate sign indicating number of the small sign indicating number square under the small code-point group that comprises the low bit of reflection Gray code; And
Define first coordinate axis of said small sign indicating number array and second coordinate axis of this first coordinate axis of quadrature, wherein said first coordinate is corresponding to said first coordinate axis, and said second coordinate is corresponding to said second coordinate axis;
The small code-point that is used to represent to reflect the low bit of Gray code in the wherein said first coordinate sign indicating number is drawn on the periphery of said first change in coordinate axis direction; The small code-point that is used to represent to reflect the low bit of Gray code in the said second coordinate sign indicating number is drawn on the periphery of said second change in coordinate axis direction.
6. coding/decoding method according to claim 4; The small code-point of balance bit that expression different directions coordinate figure is arranged is drawn in wherein said header district, and said coding/decoding method also comprises the following steps: to carry out the correction of said direction coordinate sign indicating number with the small code-point of said balance bit.
7. the coding/decoding method of a small sign indicating number array; Said small sign indicating number array comprises a plurality of small sign indicating number squares; Draw according to the reflection Gray code this small sign indicating number data field that square comprised has a plurality of small code-points; And the small code-point that is used to represent to reflect the low bit of Gray code is drawn on the periphery of said data field, and said coding/decoding method comprises the following steps:
Scan said small sign indicating number array in the hope of an image, and pick out the small code-point group of the data field of each small sign indicating number square in this image; And
The affiliated small sign indicating number square of small code-point group that utilization comprises the low bit of reflection Gray code decodes said image pairing coordinate in said small sign indicating number array.
8. coding/decoding method according to claim 7; Wherein the data field of each small sign indicating number square comprises the first coordinate sign indicating number and the second coordinate sign indicating number, and the step of utilizing the affiliated small sign indicating number square of small code-point group that comprises the low bit of reflection Gray code to decode said image pairing coordinate in said small sign indicating number array also comprises the following steps:
The first coordinate sign indicating number that utilization comprises the small sign indicating number square under the small code-point group of the low bit of reflection Gray code decodes said image pairing first coordinate in said small sign indicating number array;
Utilization comprises that the second coordinate sign indicating number of small sign indicating number square decodes said image pairing second coordinate in said small sign indicating number array under the small code-point group of the low bit of reflection Gray code; And
Define first coordinate axis of said small sign indicating number array and second coordinate axis of this first coordinate axis of quadrature, wherein said first coordinate is corresponding to said first coordinate axis, and said second coordinate is corresponding to said second coordinate axis.
9. coding/decoding method according to claim 7, wherein said small sign indicating number square also comprises the header district, and the small code-point of balance bit that expression different directions coordinate figure is arranged is drawn in this header district, and said coding/decoding method also comprises the following steps:
Utilize the small code-point of said balance bit to carry out the correction of said direction coordinate sign indicating number; And
Center and the distance between the said coordinate according to said image come between two adjacent small sign indicating number squares, to divide a plurality of coordinate scales.
10. the Code And Decode method of a small sign indicating number array, this method comprises the following steps:
In the small sign indicating number a plurality of small sign indicating number data field that square comprised that array comprised; Coded system with the reflection Gray code is drawn on a plurality of small code-points in the said data field, wherein is used to represent to reflect the periphery that small code-point that Gray code hangs down bit is drawn on said data field;
Scan said small sign indicating number array in the hope of an image, and pick out the small code-point group of the data field of each small sign indicating number square in this image; And
The affiliated small sign indicating number square of small code-point group that utilization comprises the low bit of reflection Gray code decodes said image pairing coordinate in said small sign indicating number array.
11. Code And Decode method according to claim 10, this method also comprises the following steps:
Center and the distance between the said coordinate according to said image come between two adjacent small sign indicating number squares, to divide a plurality of coordinate scales;
In the small sign indicating number a plurality of small sign indicating number header district that square comprised that array comprised, draw the small code-point of balance bit of the parity value of expression different directions coordinate; And
Utilize the small code-point of said balance bit to carry out coordinates correction;
Said small code-point in the wherein said data field is drawn in the said data field with the form of array.
12. Code And Decode method according to claim 10, wherein the coded system with the reflection Gray code also comprises the following steps: the step that a plurality of small sign indicating numbers are drawn on said data field in the small sign indicating number a plurality of small sign indicating number data field that square comprised that array comprised
Define first coordinate axis and one second coordinate axis of said small sign indicating number array;
First coordinate sign indicating number zone and second coordinate sign indicating number zone are divided in the data field of said small sign indicating number square; And
Come respectively said first coordinate sign indicating number and the said second coordinate sign indicating number to be encoded with the coded system of reflection Gray code in position according to each small sign indicating number square is positioned at said small sign indicating number array, and a plurality of small sign indicating numbers are drawn on the periphery in said first coordinate sign indicating number zone and said second coordinate sign indicating number zone in regular turn;
Wherein, the step of utilizing the affiliated small sign indicating number square of small code-point group that comprises the low bit of reflection Gray code to decode said image pairing coordinate in said small sign indicating number array also comprises the following steps:
The first coordinate sign indicating number that utilization comprises the small sign indicating number square under the small code-point group of the low bit of reflection Gray code decodes the coordinate of said image pairing first coordinate axis in said small sign indicating number array; And
The second coordinate sign indicating number that utilization comprises the small sign indicating number square under the small code-point group of the low bit of reflection Gray code decodes the coordinate of said image pairing second coordinate axis in said small sign indicating number array.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002044997A1 (en) * | 2000-11-28 | 2002-06-06 | Tani Electronics Corporation | Data encoding device and data decoding device |
| CN1434957A (en) * | 2000-05-09 | 2003-08-06 | 卡勒兹普麦迪亚公司 | Machine readable code and method and device of encoding and decoding same |
| US20040035935A1 (en) * | 2002-05-30 | 2004-02-26 | Sadao Takahashi | 2-Dimensional code pattern, 2-dimensional code pattern supporting medium, 2-dimensional code pattern generating method, and 2-dimensional code reading apparatus and method |
| CN1750448A (en) * | 2004-09-13 | 2006-03-22 | 三星电子株式会社 | Differential space-time block coding apparatus and method thereof with high transmission rate |
| US20060220984A1 (en) * | 2005-03-30 | 2006-10-05 | Nec Corporation | Image processing, compressing, decompressing, transmitting, sending and receiving devices and methods, programs thereof and displaying device |
-
2009
- 2009-04-21 CN CN201210073369.6A patent/CN102622573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1434957A (en) * | 2000-05-09 | 2003-08-06 | 卡勒兹普麦迪亚公司 | Machine readable code and method and device of encoding and decoding same |
| WO2002044997A1 (en) * | 2000-11-28 | 2002-06-06 | Tani Electronics Corporation | Data encoding device and data decoding device |
| US20040035935A1 (en) * | 2002-05-30 | 2004-02-26 | Sadao Takahashi | 2-Dimensional code pattern, 2-dimensional code pattern supporting medium, 2-dimensional code pattern generating method, and 2-dimensional code reading apparatus and method |
| CN1750448A (en) * | 2004-09-13 | 2006-03-22 | 三星电子株式会社 | Differential space-time block coding apparatus and method thereof with high transmission rate |
| US20060220984A1 (en) * | 2005-03-30 | 2006-10-05 | Nec Corporation | Image processing, compressing, decompressing, transmitting, sending and receiving devices and methods, programs thereof and displaying device |
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