CN101751590B - Decoding method of point code pattern capable of providing information, and image processing device thereof - Google Patents
Decoding method of point code pattern capable of providing information, and image processing device thereof Download PDFInfo
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- CN101751590B CN101751590B CN 200810185723 CN200810185723A CN101751590B CN 101751590 B CN101751590 B CN 101751590B CN 200810185723 CN200810185723 CN 200810185723 CN 200810185723 A CN200810185723 A CN 200810185723A CN 101751590 B CN101751590 B CN 101751590B
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Abstract
The invention discloses a point code pattern capable of providing information, a decoding method thereof and an image processing device thereof, wherein the point code pattern capable of providing information can effectively increase the proportional value of an effective record and is distributed in a rhombus area. The point code pattern comprises a plurality of virtual lattice points and a plurality of information dots. The virtual lattice points are respectively positioned at a plurality of crossing points of a plurality of first virtual lines and a plurality of second virtual lines, and the first virtual lines are in parallel to the one of diagonal lines in the rhombus area. A plurality of information dots are respectively arranged in an area formed by the virtual lattice points and are used for representing a low displacement information code or a high displacement information code.
Description
Technical field
The present invention is about a kind of point code pattern, particularly about a kind of point code pattern of the areal distribution that assumes diamond in shape.
Background technology
Relevant for the prior art of point code pattern (Coding pattern) and point code group pattern, can be from Japanese patent of invention publication number JP 2007-11890, U.S. patent of invention publication number US2007/026547, TaiWan, China new patent application case number No. 094205159, the acquisition understandings such as U.S. patent of invention publication number US2003/011164, U.S. patent of invention publication number US2006/0007255.
Fig. 1 shows the example of known point code pattern and known point code group pattern.Institute's markedness (Mark) 10a of known point code pattern 10 adopts square arrangement, and simultaneously, all known point code patterns 10 are arranged together, also are the known point code group patterns 1 that is arranged in a square configuration.
Fig. 2 shows the example of known square arrangement point code pattern, in the known point code pattern 10 of Fig. 2,16 marks (it is denoted as "●") as the location, with 3 marks as direction (it is denoted as " ▲ "), (it is denoted as 13 marks as information
), therefore, effectively the ratio of mark is 40%, i.e. 13/ (16+3+13)=40%.
Fig. 3 shows another example of known square arrangement point code pattern, in the point code pattern of Fig. 3, and 7 marks (it is denoted as "●") as the location, (it is denoted as 9 marks as information
), therefore, effectively the ratio of mark is 56%, i.e. 9/ (7+9)=56%.
The present inventor is because the ratio value of known cloth effective mark that coding mode reaches of known point code pattern still has the necessity of lifting, thereby urgently think the point code pattern that invention improves a kind of areal distribution that assumes diamond in shape, can effectively promote the ratio value of effective mark.
Summary of the invention
The object of the present invention is to provide a kind of point code pattern, can effectively promote the ratio value of effective mark.
Another object of the present invention is to provide a kind of interpretation method for point code pattern, can decipher out the information code of each information point representative of the point code pattern of the areal distribution that assumes diamond in shape.
A further object of the present invention is to provide a kind of image processor of processing point code pattern, can process the point code pattern of the areal distribution that assumes diamond in shape, and the information code of each information point representative of output point code pattern.
For reaching purpose of the present invention, the invention provides a kind of method for reading data of point code pattern, comprise the following steps: to seek a plurality of anchor points from a point coding pattern; Define a diamond-shaped area according to those anchor points, wherein this diamond-shaped area comprises a plurality of information points at least; Define a plurality of virtual lattice points by this diamond-shaped area, wherein the position of those virtual lattice points is identical with the plotted point of a plurality of first dummy line and a plurality of the second dummy line, and wherein those first dummy line are parallel with two diagonal line of this diamond-shaped area respectively with those second dummy line; And according to the position of those virtual lattice points and those information points, define one of them of at least two values of those information point representatives, obtain by this represented information of this each point code pattern.
For reaching a further object of the present invention, the invention provides a kind of image processor of processing point code pattern, this image processor comprises: a first device is used for optically read this point code pattern, and is used for digital signal corresponding to this point code pattern after optically read converting to; One second device is connected in this first device, and is for carrying out the following step according to this digital signal: at a plurality of marks of this point code pattern, seeks a plurality of anchor points; Define a diamond-shaped area according to those anchor points, wherein this diamond-shaped area comprises a plurality of information points at least; Define a plurality of virtual lattice points by this diamond-shaped area, wherein the position of those virtual lattice points is identical with the plotted point of a plurality of first dummy line and a plurality of the second dummy line, and wherein those first dummy line are parallel with two diagonal line of this diamond-shaped area respectively with those second dummy line; And according to the position of those virtual lattice points and those information points, define one of them of at least two values of those information point representatives, obtain by this respectively represented information of this point code pattern.
For more further understanding and understanding being arranged to structure of the present invention, feature and use effect thereof, hereby lift better possible embodiments and cooperate graphic being described in detail as follows:
Description of drawings
Fig. 1 shows the example of known point code pattern and known point code group pattern.
Fig. 2 shows the example of known square arrangement point code pattern.
Fig. 3 shows another example of known square arrangement point code pattern.
Fig. 4 A shows that the present invention can provide the cloth code figure of the point code pattern of information.
Fig. 4 B shows that the present invention can provide the variation cloth code figure of the point code pattern of information.
Fig. 5 shows that the present invention can provide the concrete example of the point code pattern of information.
Fig. 6 shows the schematic diagram of point code group pattern of the present invention.
Fig. 7 shows that the present invention can provide the concrete example of the point code group pattern of information.
Fig. 8 shows the example of the seal row quality of point code group pattern of the present invention.
Fig. 9 shows the example of print position of the information point of point code pattern of the present invention.
Figure 10 A～10D shows the coding example of the low displacement information point of point code pattern of the present invention.
Figure 11 A～11D shows the coding example of the high displacement information point of point code pattern of the present invention.
Figure 12 A～12H shows another coding example of the low displacement information point of point code pattern of the present invention.
Figure 13 A～13H shows another coding example of the high displacement information point of point code pattern of the present invention.
Figure 14 A～14D shows again another coding example of the low displacement information point of point code pattern of the present invention.
Figure 15 A～15D shows again another coding example of the high displacement information point of point code pattern of the present invention.
Figure 16 A shows that the present invention can provide the perpendicular array of the point code group pattern of information to change cloth code figure.
Figure 16 B shows the concrete example of Figure 16 A.
Figure 17 A shows that the present invention can provide another perpendicular array of the point code group pattern of information to change cloth code figure.
Figure 17 B shows the concrete example of Figure 17 A.
Figure 18 shows that the present invention is used for the process flow diagram of the interpretation method of point code pattern.
Figure 19 shows that the present invention processes the configuration diagram of the image processor of point code pattern.
The primary clustering symbol description
1 known point code group pattern
10 known point code patterns
The 10a mark
2 point code group patterns
20,21,22,23 point code patterns
The 20a information point
2 ' point code group pattern
20 ', 21 ', 22 ', 23 ' point code pattern
3 image processors
31 first devices
33 second devices
4,5 diamond-shaped areas
41 first dotted lines
43 second dotted lines
6 Xie Code methods
61,63,65 steps
Embodiment
See also Fig. 4 A to Figure 17 B.Point code pattern 20 of the present invention is to have a plurality of marks (Marks) 20a, and the arrangement of those marks 20a is to be arranged in the diamond-shaped area 4.In diamond-shaped area 4, a plurality of virtual lattice point n (Nominal position), n=0,1,2 ..., 11, be that the position is at a plurality of plotted points of a plurality of first dotted lines (Broken line) 41 with a plurality of the second dotted lines 43.In point code pattern 20, a plurality of first dotted lines (Broken line) 41 may be realized as the wherein diagonal line that is parallel to diamond-shaped area 4, and a plurality of second dotted lines (Broken line) 43 may be realized as another diagonal line that is parallel to diamond-shaped area 4.Those first dotted lines 41 and those second dotted lines 43 are cut into a plurality of virtual grids with the interior zone of diamond-shaped area 4.
In Fig. 5, in diamond-shaped area 4, the present invention selects to be arranged on those marks 20a of two adjacent edges of the first half of point code pattern 20, the setting mark that is used as locating (it is denoted as "●"); Simultaneously, one of them mark 20a of point code pattern 20 of the present invention selects to be positioned on the virtual lattice point of one of them, is used as the direction mark (it is denoted as " ▲ ") for direction; Other mark 20a then is used as the information point that information is provided, and (it is denoted as
).For the purpose of the property, in Fig. 4 A to Figure 17 A, the reference numerals that occurs is to represent that information point (Information dot) is in the position of point code pattern 20 for convenience of description.Mark 20a adopt respectively with "●", " ▲ ",
Only be in order to disclose the upper comprehensible purpose of explanation etc. difform sign, on the practice, those marks 20a as positioning function, direction function and informational function can adopt identical shaped sign respectively.
The actual arrangement position of each information point 20a can with corresponding virtual lattice point n across a displacement with direction and distance.
In Fig. 5,5 setting marks of 20 need of point code pattern of the present invention and 1 direction mark, can hold 12 information points, effectively the ratio of mark is 72%, i.e. 12/ (5+1+12)=72%, compared to the ratio value of effective mark of Fig. 2,3 known point code patterns, still required anchor point is not minimum for point code pattern of the present invention, and effectively the ratio value of mark also is the highest.
What Fig. 4 A was shown is point code group pattern 2 examples of the present invention, and what Fig. 4 B was shown is another example of point code group pattern 2 of the present invention.In diamond-shaped area 4, the reference numerals that occurs be represent virtual lattice point n (n=0,1,2 ..., 11), each information point 20a is positioned at corresponding virtual lattice point n on the position of a displacement with direction and distance.
Fig. 6 shows the schematic diagram of point code group pattern of the present invention.Individual other point code pattern 20 is placed on other diamond-shaped area 4.Each diamond-shaped area 4 is adjacent one another are.Fig. 7 shows that the present invention can provide the concrete example figure of the point code group pattern of information, four point code pattern 20-23 are arranged in the point code group pattern 2 of diamond-shaped area together, and adjacent two point code patterns 20,21, point code pattern 20,22, point code pattern 22,23, point code pattern 21,23 etc. all on tilted direction (tilted direction of the tilted direction of upper right-lower-left or upper left-bottom right) adjacent one another are.
Fig. 8 shows the example of the seal row quality of point code group pattern of the present invention.The printing example of hereby lifting with 1200DPI illustrates, the diameter of each carbon point of 1200DPI laser printer is about 21um, the present invention is printed each mark 20a employing of point code pattern by 9 carbon points, be 3*3 carbon dot matrix and form a mark 20a, therefore the diameter of mark 20a is 3 carbon points, that is 63um.The spacing distance of virtual lattice point n can adopt at a distance of being 0.3mm.
Fig. 9 shows the example of print position of the information point of point code pattern of the present invention.The spacing distance of adjacent two virtual lattice point n adopts at a distance of illustrating for the example of 0.3mm, therefore, with a virtual lattice point n, a 0.3mm*0.3mm square region centered by virtual lattice point n, can distinguish again 25 63um*63um square region.In an embodiment of the present invention, the position 13 of 63um*63um square region only is the reference as virtual lattice point n, and not as the print position of information point 20a.Position 1-12,14-25 distinguish the position around virtual lattice point n, and position centered by virtual lattice point n (position 13), position 1-12,14-25 can be used as the print position of information point 20a.
In like manner, be not used as other virtual lattice point that information point 20a arranges foundation, these formed zones of virtual lattice point also can be used as the print position of direction mark 20a.
Figure 10 A～10D shows the coding example of the low displacement information point of point code pattern of the present invention, and Figure 11 A～11D shows the coding example of the high displacement information point of point code pattern of the present invention.According to the displacement between information point 20a and the virtual lattice point n apart from length, information point 20a can divide into low displacement information point and high displacement information point again.For example the shift length of the information point of Figure 10 A～10D is shorter, then is low displacement information point 20a; The shift length of the information point of Figure 11 A～11D is longer, then is high displacement information point 20a.In Figure 10 A～10D, information point 20a is chosen position 14,8,12,18 respectively, be used as the seal column position of low displacement information point, those low displacement information point 20a represent respectively low displacement information code 00, low displacement information code 01, low displacement information code 10, low displacement information code 11.In Figure 11 A～11D, information point 20a is chosen position 14,8,12,18 respectively, be used as the seal column position of high displacement information point, those high displacement information point 20a represent respectively high displacement information code 00, high displacement information code 01, high displacement information code 10, high displacement information code 11.
Figure 12 A～12H shows another coding example of the low displacement information point of point code pattern of the present invention, and Figure 13 A～13H shows another coding example of the high displacement information point of point code pattern of the present invention.According to the displacement between information point 20a and the virtual lattice point n apart from length, information point 20a is divided into low displacement information point and high displacement information point again.For example the shift length of the information point 20a of Figure 12 A～12H is shorter, then is low displacement information point; The shift length of the information point 20a of Figure 13 A～13H is longer, then is high displacement information point.In Figure 12 A～12H, information point 20a is chosen position 9,14,19,18,17,12,7,8 respectively, be used as the seal column position of low displacement information point, those low displacement information point 20a represent respectively low displacement information code 000, low displacement information code 001, low displacement information code 010, low displacement information code 011, low displacement information code 100, low displacement information code 101, low displacement information code 110, low displacement information code 111.In Figure 13 A～13H, information point 20a is chosen position 5,15,25,23,21,11,1,3 respectively, be used as the seal column position of high displacement information point, those high displacement information point 20a represent respectively high displacement information code 000, high displacement information code 001, high displacement information code 010, high displacement information code 011, high displacement information code 100, high displacement information code 101, high displacement information code 110, high displacement information code 111.
Figure 14 A～14D shows again another coding example of the low displacement information point of point code pattern of the present invention, and Figure 15 A～15D shows again another coding example of the high displacement information point of point code pattern of the present invention.According to the displacement between information point 20a and the virtual lattice point n apart from length, information point 20a is divided into low displacement information point and high displacement information point again.For example the shift length of the information point 20a of Figure 14 A～14D is shorter, then is low displacement information point; The shift length of the information point 20a of Figure 15 A～15D is longer, then is high displacement information point.In Figure 14 A～14D and Figure 15 A～15D, the shift length amount changes 3/2nds of 63um into by original 63um, namely changes 42um into, so mark can be arranged as more evenly, and visual impact is less.The low displacement information point 20a of Figure 14 A～14D represents respectively low displacement information code 00, low displacement information code 01, low displacement information code 10, low displacement information code 11.The high displacement information point 20a of Figure 15 A～15D represents respectively high displacement information code 00, high displacement information code 01, high displacement information code 10, high displacement information code 11.
Further specify again the variation example of the set-up mode of information point 20a, information point 20a is practicable be arranged at virtual lattice point n around, in this value of information point 20a representative that changes example with relevant with respect to the direction of virtual lattice point n, change in the example value of the information point 20a representative of variation example and direction and the distance dependent with respect to virtual lattice point n at another.
Further specify another variation example of the set-up mode of information point 20a, the practicable wherein place that is arranged at position 1～25 of information point 20a depends in this value that changes the information point 20a representative of example information point 20a drops on which position of position 1～25 again.
Further specify again again another variation example of the set-up mode of information point 20a, information point 20a is practicable to be arranged at the wherein place in zone of the position 1～25 of virtual lattice point n, the value of information point 20a representative is with relevant with respect to the direction of position 13, or with direction and distance dependent with respect to position 13.
Figure 16 A shows that the present invention can provide the perpendicular array of the point code group pattern of information to change cloth code figure, and Figure 16 B shows the concrete example of Figure 16 A.Please be simultaneously with reference to Fig. 4 A, suppose four point code patterns of Fig. 4 A and all be to represent same information at four point code patterns of Figure 16 A, for example represent alphabetical information " A ".Four point code patterns of Fig. 4 A are to adopt the means that repeat point code pattern, see also Fig. 7 again, and four point code pattern 20-23 represent same information, and adopt the layout example that repeats point code pattern.The present invention proposes the point code pattern arrangement of perpendicular array mode, can be used to reduce visual impact.In Figure 16 A, (tilted direction of the tilted direction of upper right-lower-left and upper left-bottom right) adjacent point code pattern 20 ', 21 ' on tilted direction, point code pattern 20 ', 22 ', point code pattern 22 ', 23 ', point code pattern 21 ', 23 ', be respectively orthogonal arrangement, and four point code pattern 20 '～23 ' that Figure 16 B shows all are to represent same information, and adopt the layout example of perpendicular array.
Figure 17 A shows that the present invention can provide another perpendicular array of the point code group pattern of information to change cloth code figure, and Figure 17 B shows the concrete example of Figure 17 A.Similarly, in Figure 17 A, (tilted direction of the tilted direction of upper right-lower-left and upper left-bottom right) adjacent point code pattern 20 ', 21 ' on tilted direction, point code pattern 20 ', 22 ', point code pattern 22 ', 23 ', point code pattern 21 ', 23 ' is respectively orthogonal arrangement, and four point code pattern 20 '～23 ' that Figure 17 B shows all are to represent same information, and adopt the layout example of perpendicular array.
Figure 18 shows that the present invention is used for the process flow diagram of the interpretation method of point code pattern.It is each mark 20a that explain point code pattern 20 that Ben Faming separates Code method 6, and interpretation method 6 comprises step 61～65, hereby is respectively described below.
Figure 19 shows that the present invention processes the configuration diagram of the image processor of point code pattern.Image processor 3 is to process point code pattern of the present invention and point code group pattern, and output is corresponding to the output signal of the information of point code group pattern.Image processor 3 comprises: first device 31 and the second device 33 are respectively described below interior literary composition.First device 3 is optically read point code group patterns, for example reads the point code pattern 20 and point code group pattern 2 of Fig. 7 and Figure 17, and is for digital signal corresponding to the point code pattern 20 after optically read converting to point code group pattern 2.It is for the treatment of this digital signal that the second device 33 is connected in first device 31, the second devices 33, and the signal of each information point 20a representative information code of output point code pattern 20 and point code group pattern 2.The concrete assembly of first device 31 can adopt and comprise at least CCD photographic image assembly, and the concrete assembly of the second device 33 can adopt the assembly that comprises at least digital processing unit (DSP).In the second device 33, this digital processing unit can be used for carrying out the firmware according to 6 specific implementations of above-mentioned interpretation method.
The assume diamond in shape point code pattern of areal distribution of the present invention can effectively promote the ratio value of effective mark, can also reduce the impact for vision, is to be progress of the present invention place.
But the above only is preferred embodiment of the present invention, when can not be in order to limiting the enforceable scope of the present invention, allly is familiar with obviously can doing to change and modifying in this skill personage, all should be considered as not departing from flesh and blood of the present invention.
Claims (6)
1. the method for reading data of a point code pattern comprises the following steps:
Seek a plurality of anchor points from a point coding pattern;
Define a diamond-shaped area according to those anchor points, wherein this diamond-shaped area comprises a plurality of information points at least;
Define a plurality of virtual lattice points by this diamond-shaped area, wherein the position of those virtual lattice points is identical with the plotted point of a plurality of first dummy line and a plurality of the second dummy line, and wherein those first dummy line are parallel with two diagonal line of this diamond-shaped area respectively with those second dummy line; And
According to the position of those virtual lattice points and those information points, define one of them of at least two values of those information point representatives, obtain by this represented information of this each point code pattern.
2. the method for reading data of point code pattern as claimed in claim 1 is characterized in that: wherein be the value of judging this information point representative according to this information point to the direction of this virtual lattice point respectively.
3. the method for reading data of point code pattern as claimed in claim 1 is characterized in that: wherein be to be positioned at the value that those virtual lattice points form this information point representative of position judgment in zone according to this information point.
4. the method for reading data of point code pattern as claimed in claim 1 is characterized in that: wherein be the value that determines this information point representative according to the direction between this information point and those the virtual lattice points and distance.
5. the method for reading data of point code pattern as claimed in claim 1 is characterized in that: wherein be the value that determines this information point according to the direction that this information point forms the center in zone with respect to those virtual lattice points.
6. image processor of processing point code pattern, this image processor comprises:
One first device is used for optically read this point code pattern, and is used for digital signal corresponding to this point code pattern after optically read converting to;
One second device is connected in this first device, and is for carrying out the following step according to this digital signal:
In a plurality of marks of this point code pattern, seek a plurality of anchor points;
Define a diamond-shaped area according to those anchor points, wherein this diamond-shaped area comprises a plurality of information points at least;
Define a plurality of virtual lattice points by this diamond-shaped area, wherein the position of those virtual lattice points is identical with the plotted point of a plurality of first dummy line and a plurality of the second dummy line, and wherein those first dummy line are parallel with two diagonal line of this diamond-shaped area respectively with those second dummy line; And
According to the position of those virtual lattice points and those information points, define one of them of at least two values of those information point representatives, obtain by this respectively represented information of this point code pattern.
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| JP2007012016A (en) * | 2005-11-18 | 2007-01-18 | Kenji Yoshida | Dot pattern |
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