CN104913797A - Pointer type instrument number reading and recognition method and system - Google Patents
Pointer type instrument number reading and recognition method and system Download PDFInfo
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- CN104913797A CN104913797A CN201510292646.6A CN201510292646A CN104913797A CN 104913797 A CN104913797 A CN 104913797A CN 201510292646 A CN201510292646 A CN 201510292646A CN 104913797 A CN104913797 A CN 104913797A
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Abstract
The invention discloses a pointer type instrument number reading and recognition method and a system. The pointer type instrument number reading and recognition method comprises steps of adjusting relative positions of an image collection recognition device and the instrument to be read, obtaining an accuracy current image of a dial plate area of the instrument to be read, and determining the dial plate area on the collected image without using the complicated image analysis technology like the contour tracing. The invention reduces the calculated amount, and improves the recognition efficiency. Furthermore, the invention performs recognition processing on the collected current image through the recognition module of the image collection recognition device without transmitting the collected image to the computer to process, eliminates the data transmission time and further improves the recognition efficiency.
Description
Technical field
The present invention relates to the Recognition of Reading field of instrument, particularly relate to a kind of Recognition of Reading method and system of pointer instrument.
Background technology
Pointer instrument is current topmost survey instrument, is widely used in commercial production and scientific experiment.At present, the reading of pointer instrument substantially still adopts artificial reading mode, which waste of manpower on the one hand, material resources, and uninteresting; On the other hand due to impact or the vision deviation of human factor, easily cause mistake or inevitable error, even cause irremediable loss.In recent years, propose some identify readings of pointer type meters automatically method based on artificial intelligence such as computer visions, but the method is generally the image by image capture device acquisition instrument, send the automatic identification equipments such as computing machine to, through Contour extraction, the complicated image analytical technologies such as Iamge Segmentation, obtain scale and pointer information respectively, the least square method of recycling quadratic fit, the complicated algorithms such as BP neural network realize the automatic interpretation of pointer instrument, the method not only relies on complicated image analysis technology, data store large, require high to hardware device, cost of idleness, and system complex, the transmission of image, receive, processing procedure is all consuming time longer, arithmetic speed is very slow, when ensureing higher accuracy of identification, recognition efficiency becomes main design bottleneck.
Summary of the invention
Based on this, the present invention solves the not high problem of existing Recognition of Reading technology recognition efficiency, proposes a kind of Recognition of Reading system and method for pointer instrument.
The Recognition of Reading system of pointer instrument comprises control device, locating device and an image acquisition recognition device, and image acquisition recognition device is arranged on the positioning device, and locating device is removable.
Control device, for receiving the meter type treating readout instrument of input, and determines the pickup area corresponding with meter type, and this pickup area is corresponding with treating the dial plate region of readout instrument.
Locating device, for according to pickup area adjustment image acquisition recognition device and the relative position treating readout instrument, makes pickup area corresponding with treating the dial plate of readout instrument.
Image acquisition recognition device comprises:
Acquisition module, for treating the present image of reading instrument dish according to pickup area collection;
Identification module, for treating the reading of readout instrument according to present image identification.
The invention allows for a kind of Recognition of Reading method of pointer instrument, comprise step:
Receive the meter type treating readout instrument of input, and determine the pickup area corresponding with meter type, this pickup area is corresponding with treating the dial plate region of readout instrument.
According to pickup area adjustment image acquisition recognition device and the relative position treating readout instrument, make pickup area corresponding with treating the dial plate of readout instrument.
The present image of reading instrument dish is treated according to pickup area collection.
The reading of readout instrument is treated according to present image identification.
The Recognition of Reading system and method for the pointer instrument that the present invention proposes, by receiving the meter type treating readout instrument of input, adjustment image acquisition recognition device and the relative position treating readout instrument, thus obtain the present image treating the dial plate region of readout instrument accurately, on the image gathered, dial plate region is determined without the need to complicated image analytical technologies such as Contour extraction, reduce calculated amount, improve recognition efficiency, and, identification module by image acquisition recognition device directly carries out identifying processing to the present image gathered, without the need to sending to computing machine to process the image of collection, eliminate the time of data transmission, further increase recognition efficiency.
Accompanying drawing explanation
Fig. 1 is the structural drawing of an embodiment of the Recognition of Reading system of middle finger pin type instrument of the present invention;
Fig. 2 is the structural drawing of recognition unit in another embodiment of the Recognition of Reading system of middle finger pin type instrument of the present invention;
Fig. 3 is the structural drawing of reading cell in another embodiment of the Recognition of Reading system of middle finger pin type instrument of the present invention;
Fig. 4 is the structural drawing of analytic unit in another embodiment of the Recognition of Reading system of middle finger pin type instrument of the present invention;
Fig. 5 is the process flow diagram of an embodiment of the Recognition of Reading method of middle finger pin type instrument of the present invention;
Fig. 6 is the process flow diagram of identification step in another embodiment of the Recognition of Reading method of middle finger pin type instrument of the present invention;
Fig. 7 is the process flow diagram of identification step in another embodiment of the Recognition of Reading method of middle finger pin type instrument of the present invention;
Fig. 8 is the process flow diagram of analytical procedure in another embodiment of the Recognition of Reading method of middle finger pin type instrument of the present invention.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, show one embodiment of the present invention, the Recognition of Reading system of pointer instrument, comprise control device 1100, locating device 1200 and image acquisition recognition device 1300, image acquisition recognition device 1300 is arranged on locating device 1200, and locating device 1200 is removable.
Control device 1100, for receiving the meter type treating readout instrument of input, and determines the pickup area corresponding with meter type, and this pickup area is corresponding with treating the dial plate region of readout instrument.
Locating device 1200, for according to pickup area adjustment image acquisition recognition device 1300 and the relative position treating readout instrument, makes pickup area corresponding with treating the dial plate of readout instrument.
Image acquisition recognition device 1300 comprises:
Acquisition module 1310, for treating the present image of reading instrument dish according to pickup area collection;
Identification module 1320, for treating the reading of readout instrument according to present image identification.
In a particular embodiment, control device 1100 can be a host computer, as the telepilot etc. of personal computer, band operation interface, one is stored about treating the database of the meter type of readout instrument in this host computer, as 20 groups using model the data as 20 of index value kinds of pointer instruments such as voltage, electric current, these data comprise its model, size, dial plate region, range, scale division value etc.When staff needs to carry out Recognition of Reading to any one in the pointer instrument of this 20 type, by the meter type treating readout instrument that the operation interface input of this host computer is known, this control device 1100 is according to the meter type of input, inquiry stores the database about several meter type that continues, and obtains each data about the type instrument.Accordingly, determine the pickup area corresponding with this meter type, make this pickup area corresponding with the dial plate region of instrument.Preferably, when not storing the data until reading meter type in control device 1100, also by the operation interface of control device 1100, add the every terms of information mated with the type pointer instrument, enrich augmentation data storehouse content, be convenient to identify the reading of the type pointer instrument from now on.
Locating device 1200 can be three axle electricity driving displacement platforms, it is by wired or wireless mode, as Ethernet, communicate to connect with control device 1100, under the instruction of the pickup area determined at control device 1100, image acquisition recognition device 1300 is driven to move to the side relative with treating the dial plate of readout instrument, guarantee that image acquisition recognition device 1300 is fixed with the relative position of instrument to be detected, the pickup area making image acquisition recognition device is corresponding with the dial plate treating readout instrument, to gather the required present image treating readout instrument.
Image acquisition recognition device 1300 treats the present image of reading instrument dish according to pickup area collection, and treats the reading of readout instrument according to this current image recognition.
The Recognition of Reading system 1000 of the pointer instrument that the present invention proposes, the meter type treating readout instrument of input is received by control device 1100, adjustment image acquisition recognition device 1300 and the relative position treating readout instrument, thus obtain the present image treating the dial plate region of readout instrument accurately, on the image gathered, dial plate region is determined without the need to complicated image analytical technologies such as Contour extraction, reduce calculated amount, improve recognition efficiency, and, identification module by image acquisition recognition device carries out identifying processing to the present image gathered, without the need to sending to computing machine to process the image of collection, eliminate the time of data transmission, further increase recognition efficiency.
Preferably, wherein in an embodiment, pickup area comprises scale mark pickup area and pointer pickup area, and the present image that acquisition module 1310 gathers comprises the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area.
As shown in Figure 2, in this embodiment, identification module 1320 comprises scale mark recognition unit 1321, pointer recognition unit 1322 and reading cell 1323.
Scale mark recognition unit 1321, for identifying all line segments in scale mark region, this all line segment is the scale mark treating readout instrument.
Pointer recognition unit 1322, for identifying the unique line segment in pointer area, this unique line segment treats the pointer of readout instrument.
Reading cell 1323, for treating the reading of readout instrument according to scale mark and pointer identification.
In a particular embodiment, image acquisition recognition device 1300 is preferably any images of taking such as smart camera, video camera, scanner, and has the equipment of programmable logic device (PLD), and itself has image collecting function.The identification module 1320 of pointer instrument is burned onto in this equipment.
Present embodiment is for U.S.'s Cognex (COGNEX) IS7402 smart camera.The multifindline () function with straight-line detection function carried in this camera can many line segments in surveyed area, have the findline () function of straight-line detection function, can unique line segment in surveyed area.
Because the present image gathered comprises the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area, and scale mark region comprises many line segments, and pointer pickup area only comprises a line segment.Utilize this feature, by calling the multifindline () function that this camera carries, identifying all line segments in scale mark region, namely obtaining all scale marks treating readout instrument.By calling the findline () function that this camera carries, identifying the unique line segment in pointer area, namely obtaining the pointer treating readout instrument.
By determining pointer and scale mark, the scale value of the scale mark of the image recognition technology identification pointer left and right sides can be adopted, thus identify the pin-point reading treating readout instrument.
In this embodiment, by pickup area being divided into scale mark pickup area and pointer pickup area in advance, the present image obtained is made to be divided into the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area, utilize feature identification scale mark and the pointer of scale mark region and pointer area self, without the need to adopting the complex technologys such as Iamge Segmentation, simplify the computation process of Recognition of Reading, further increase the efficiency of Recognition of Reading.
Preferably, in another embodiment, scale recognition unit 1321, also for the scale mark of identification being sorted successively according to present image and numbering the scale numbering obtaining every root scale mark, according to treating that the meter type of readout instrument obtains scale value corresponding to each scale numbering and treats the scale division value of readout instrument.
In this embodiment, as shown in Figure 3, reading cell 1323, comprising:
First computation subunit A1, for the distance on the summit to every root scale mark that calculate pointer.
First judgment sub-unit A2, judges to obtain the two piece scale marks nearest with the summit of pointer according to result of calculation, obtains the scale value of these two scale marks corresponding;
To the Distance geometry correspondence of nearest two scale marks, second computation subunit A3, treats that the scale division value of readout instrument calculates the reading treating readout instrument according to the scale value of these two scale marks, the summit of pointer.
In a particular embodiment, the scale mark of identification sorts by scale recognition unit 1321 from left to right successively, and is numbered 1-N, and wherein numbering 1 represents 0 scale mark ... numbering N represents full scale scale mark.Now, the meter type treating readout instrument receiving input according to control device 1100 can obtain its range, is set to W.Then known, the scale value that X root scale mark is corresponding is:
And according to the database stored in control device 1200, obtain the scale division value treating readout instrument, this scale division value is designated as Z.
First computation subunit A1, adopt point to the distance computing formula of line segment, this distance results, to the distance of every root scale mark, is set to L by the summit calculating pointer
1, L
2l
n.
First judgment sub-unit A2, according to result of calculation L
1, L
2l
nsize, judge to obtain nearest two scale marks in distance summit, be designated as a scale mark and a+1 scale mark, its distance is designated as L
a, L
a+1, obtain and to the scale value of two scale marks that should be nearest be:
Second computation subunit A3, treats the scale division value Z of readout instrument, calculates and treat that the reading of readout instrument is to the Distance geometry correspondence of nearest two scale marks according to the scale value of these two nearest scale marks, pointer summit:
As shown in Figure 4, in another embodiment, identification module 1320 also comprises analytic unit 1324, and this analytic unit 1324 comprises:
3rd computation subunit B1: for calculating the difference of the reading of the double identification treating readout instrument;
Second judgment sub-unit B2: for judging whether this difference is greater than threshold value;
Reading cell 1323, also for when the result of determination of the second judgment sub-unit B2 is no, the mean value getting the reading of twice identification is the reading treating readout instrument;
Acquisition module 1310, also for when the result of determination of the second judgment sub-unit B2 is for being, treats the present image of readout instrument again according to pickup area collection.
In this embodiment, identification module 1320 comprises analytic unit 1324 further, analyzes the difference of the reading of double identification, avoids the error situation that appearance twice difference is larger, further increases accuracy and the precision of Recognition of Reading.
Preferably, the Recognition of Reading system of pointer instrument also can comprise output module, be connected with identification module 1320, receive it to export, and this output is transferred to host computer Displaying Meter reading by wired or wireless mode or directly on image acquisition recognition device, the display device Displaying Meter readings such as LED, LCD is installed.
Preferably, the conditional parameter of environment residing for the instrument that control device 1100 also can receive input, or by the automatic sense environmental conditions of sensor pick-up unit, to adjust the parameter such as exposure intensity, time of image collecting device, improve the quality of the current reading image of instrument gathered, and then improve the precision of meter reading identification.
As shown in Figure 5, show the Recognition of Reading method of a kind of pointer instrument of the present invention, comprise step:
S110: the meter type treating readout instrument receiving input, and determine the pickup area corresponding with meter type, this pickup area is corresponding with treating the dial plate region of readout instrument.
S120: according to pickup area adjustment image acquisition recognition device and the relative position treating readout instrument, make pickup area corresponding with treating the dial plate of readout instrument.
S130: the present image treating reading instrument dish according to pickup area collection.
S140: the reading treating readout instrument according to present image identification.
In a particular embodiment, step S110 specifically by host computer, as the telepilot etc. of personal computer, band operation interface, can receive the meter type treating readout instrument of input.This host computer, according to the meter type of input, is inquired about the relevant database treating reading meter type stored in it, is obtained each data about the type instrument, comprise its model, size, dial plate region, range, scale division value etc.Accordingly, determine the pickup area corresponding with this meter type, make this pickup area corresponding with the dial plate region of instrument.Preferably, when not storing the data until reading meter type in database, also by the operation interface of host computer, add the every terms of information mated with the type pointer instrument, enrich augmentation data storehouse content, be convenient to identify the reading of the type pointer instrument from now on.
Step S120 can be employing three axle electricity driving displacement platform according to the pickup area determined, image acquisition recognition device 1300 is driven to move to the side relative with treating the dial plate of readout instrument, guarantee that image acquisition recognition device 1300 is fixed with the relative position of instrument 1400 to be detected, the pickup area making image acquisition recognition device is corresponding with the dial plate treating readout instrument, to gather the required present image treating readout instrument.
Image acquisition recognition device 1300 treats the present image of readout instrument 1400 dial plate according to pickup area collection, and treats the reading of readout instrument according to this current image recognition.
The Recognition of Reading method of the pointer instrument that the present invention proposes, by receiving the meter type treating readout instrument of input, adjustment image acquisition recognition device and the relative position treating readout instrument, thus obtain the present image treating the dial plate region of readout instrument accurately, on the image gathered, dial plate region is determined without the need to complicated image analytical technologies such as Contour extraction, reduce calculated amount, improve the efficiency of meter reading identification.
Wherein in an embodiment, step S110, S120 are consistent with embodiment 1.Difference is, pickup area comprises scale mark pickup area and pointer pickup area, and the present image of collection comprises the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area.
As shown in Figure 6, above-mentionedly treat that according to present image identification the step S140 of the reading of readout instrument comprises:
S141: identify all line segments in scale mark region, all line segments of gained are the scale mark treating readout instrument.
S142: identify the unique line segment in pointer area, unique line segment of gained is the pointer treating readout instrument.
S143: the reading treating readout instrument according to this scale mark and this pointer identification.
In a particular embodiment, image acquisition recognition device is chosen as any images of taking such as smart camera, video camera, scanner, and has the equipment of programmable logic device (PLD).
Present embodiment is for U.S.'s Cognex (COGNEX) IS7402 smart camera.The multifindline () function of the straight-line detection function carried in this camera can many line segments in surveyed area, have the findline () function of straight-line detection function in it, can unique line segment in surveyed area.
Because the present image gathered comprises the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area, and scale mark region comprises many line segments, and pointer pickup area only comprises one directly.Utilize this feature, by calling the multifindline () function that this camera carries, identifying all line segments in scale mark region, namely obtaining all scale marks treating readout instrument.By calling the findline () function that this camera carries, identifying the unique line segment in pointer area, namely obtaining the pointer treating readout instrument.
By determining pointer and scale mark, the scale value of the scale mark of the image recognition technology identification pointer left and right sides can be adopted, thus identify the pin-point reading treating readout instrument.
In this embodiment, by pickup area being divided into scale mark pickup area and pointer pickup area in advance, the present image obtained is made to be divided into the scale mark region corresponding with scale mark pickup area and the pointer area corresponding with pointer pickup area, utilize feature identification scale mark and the pointer of scale mark region and pointer area self, without the need to adopting the complex technologys such as Iamge Segmentation, simplify the computation process of Recognition of Reading, further increase the efficiency of Recognition of Reading.
As shown in Figure 7, in another embodiment, step S140 also comprises:
S1411: the scale mark of identification is sorted successively according to present image and numbers the scale numbering obtaining every root scale mark, and obtain scale value corresponding to each scale numbering according to meter type and treat the scale division value of readout instrument.
Above-mentionedly treat that the reading S143 of readout instrument specifically comprises step according to this scale mark and this pointer identification:
S1431: the distance of summit to every root scale mark calculating pointer.
S1432: judge to obtain the two piece scale marks nearest with the summit of pointer according to result of calculation, obtain the scale value to two scale marks that should be nearest;
S1433: treat that the scale division value of readout instrument calculates the reading treating readout instrument to the Distance geometry correspondence of these two nearest scale marks according to this nearest scale value of two scale marks, the summit of pointer.
In a particular embodiment, the scale mark of identification sorts by step S1411 from left to right successively, and is numbered 1-N, and wherein numbering 1 represents 0 scale mark ... numbering N represents full scale scale mark.Now, the meter type treating readout instrument according to receiving input in step S110 can obtain its range, is set to W.Then known, the scale value that X root scale mark is corresponding is:
And according to receiving the meter type treating readout instrument of input in step S110, the database that inquiry stores, obtaining the scale division value treating readout instrument, this scale division value is designated as Z.
Step S1431, adopt point to the distance computing formula of line segment, this distance results, to the distance of every root scale mark, is set to L by the summit calculating pointer
1, L
2l
n.
Step S1432: according to result of calculation L
1, L
2l
nsize, judge to obtain nearest two scale marks in distance summit, be designated as a scale mark and a+1 scale mark, its distance is designated as L
a, L
a+1, the scale value obtaining these two scale marks corresponding is:
Step S1433, treats the scale division value Z of readout instrument, calculates and treat that the reading of readout instrument is to the Distance geometry correspondence of nearest two scale marks according to the scale value of these two scale marks, pointer summit:
In this embodiment, the Recognition of Reading method of this pointer instrument specify that how to calculate according to scale mark and pointer the reading treating readout instrument, provide one Recognition of Reading system simply and easily further.
As shown in Figure 8, in another embodiment, the Recognition of Reading method of pointer instrument also comprises analytical procedure, and this analytical procedure comprises:
S151: calculate the difference treating the reading of the double identification of readout instrument;
S152:: judge whether this difference is greater than threshold value;
S153: when result of determination is no, the mean value getting the reading of twice identification is the reading treating readout instrument;
S154: when result of determination is for being, treats the present image of readout instrument again according to pickup area collection.
In this embodiment, the Recognition of Reading method of pointer instrument also comprises analytical procedure, analyzes the difference of the reading of double identification, avoids the error situation that appearance twice difference is larger, further increases accuracy and the precision of Recognition of Reading.
Preferably, the Recognition of Reading system of pointer instrument also can comprise output step, by wired or wireless mode, the reading of identification is transferred to host computer and shows or directly on image acquisition recognition device, install the display device displays such as LED, LCD.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
Above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make multiple distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a Recognition of Reading system for pointer instrument, is characterized in that, comprises control device, locating device and image acquisition recognition device; Described image acquisition recognition device is arranged on described locating device, and described locating device is removable;
Described control device, for receiving the meter type treating readout instrument of input, and determines the pickup area corresponding with described meter type, with described, described pickup area treats that the dial plate region of readout instrument is corresponding;
Described locating device, for adjusting described image acquisition recognition device and the described relative position treating readout instrument according to described pickup area, makes described pickup area treat that the dial plate of readout instrument is corresponding with described;
Described image acquisition recognition device comprises:
Acquisition module, for treating the present image of reading instrument dish according to described pickup area collection;
Identification module, for treating the reading of readout instrument according to described present image identification.
2. the Recognition of Reading system of pointer instrument according to claim 1, it is characterized in that, described pickup area comprises scale mark pickup area and pointer pickup area, and the present image of described acquisition module collection comprises the scale mark region corresponding with described scale mark pickup area and the pointer area corresponding with described pointer pickup area;
Described identification module comprises scale mark recognition unit, pointer recognition unit and reading cell;
Described scale mark recognition unit, for identifying all line segments in described scale mark region, described all line segments for described in treat the scale mark of readout instrument;
Described pointer recognition unit, for identifying the unique line segment in described pointer area, described unique line segment for described in treat the pointer of readout instrument;
Described reading cell, for treating the reading of readout instrument according to described scale mark and described pointer identification.
3. the Recognition of Reading system of pointer instrument according to claim 2, it is characterized in that, described scale mark recognition unit, also for the described scale mark identified being sorted successively according to present image and numbering the scale numbering obtaining every root scale mark, obtain scale value corresponding to each scale numbering according to described meter type and treat the scale division value of readout instrument;
Described reading cell, comprising:
First computation subunit, for the distance on the summit to described every root scale mark that calculate described pointer;
First judgment sub-unit, judges to obtain the two piece scale marks nearest with the summit of described pointer according to result of calculation, obtains the scale value of corresponding described two scale marks recently;
Second computation subunit, according to the described scale value of two scale marks recently, the summit of described pointer to described two scale marks recently Distance geometry correspondence described in treat that the scale division value of readout instrument treats the reading of readout instrument described in calculating.
4. the Recognition of Reading system of the pointer instrument according to claim 1-3 any one, it is characterized in that, described identification module also comprises analytic unit, described analytic unit comprises:
3rd computation subunit, for treating the difference of the reading of the double identification of readout instrument described in calculating;
Second judgment sub-unit, for judging whether described difference is greater than threshold value;
Described reading cell, also for when the result of determination of described second judgment sub-unit is no, the mean value getting the reading of twice identification for described in treat the reading of readout instrument;
Described acquisition module, also for when the result of determination of described second judgment sub-unit is for being, treats the present image of readout instrument again according to described pickup area collection.
5. the Recognition of Reading system of the pointer instrument according to claim 1-3 any one, is characterized in that, described image acquisition recognition device is any one in camera, video camera, scanner.
6. a Recognition of Reading method for pointer instrument, is characterized in that, comprise step:
Receive the meter type treating readout instrument of input, and determine the pickup area corresponding with described meter type, with described, described pickup area treats that the dial plate region of readout instrument is corresponding;
According to described pickup area adjustment image acquisition recognition device and the described relative position treating readout instrument, described pickup area is made to treat that the dial plate of readout instrument is corresponding with described;
The present image of reading instrument dish is treated according to described pickup area collection;
The reading of readout instrument is treated according to described present image identification.
7. the Recognition of Reading method of pointer instrument according to claim 6, it is characterized in that, described pickup area comprises scale mark pickup area and pointer pickup area, and the present image of collection comprises the scale mark region corresponding with described scale mark pickup area and the pointer area corresponding with described pointer pickup area;
Describedly according to described present image identification, treat that the step of the reading of readout instrument comprises:
Identify all line segments in described scale mark region, described all line segments for described in treat the scale mark of readout instrument;
Identify the unique line segment in described pointer area, described unique line segment for described in treat the pointer of readout instrument;
The reading of readout instrument is treated according to described scale mark and described pointer identification.
8. the Recognition of Reading method of pointer instrument according to claim 7, is characterized in that, describedly according to described present image identification, treats that the step of the reading of readout instrument also comprises:
The described scale mark identified sorted successively according to present image and numbers the scale numbering obtaining every root scale mark, obtain scale value corresponding to each scale numbering according to described meter type and treat the scale division value of readout instrument;
Calculate the distance of summit to described every root scale mark of described pointer;
Judge to obtain the two piece scale marks nearest with the summit of described pointer according to result of calculation, obtain the scale value of corresponding described two scale marks recently;
According to the described scale value of two scale marks recently, the summit of described pointer to described two scale marks recently Distance geometry correspondence described in treat that the scale division value of readout instrument treats the reading of readout instrument described in calculating.
9. the Recognition of Reading method of the pointer instrument according to claim 6-8 any one, is characterized in that, the Recognition of Reading method of described pointer instrument also comprises analytical procedure, and described analytical procedure comprises:
The difference of the reading of the double identification of readout instrument is treated described in calculating;
Judge whether described difference is greater than threshold value;
When result of determination is no, the mean value getting the reading of twice identification for described in treat the reading of readout instrument;
When result of determination is for being, according to described pickup area collection, again treat the present image of readout instrument.
10. the Recognition of Reading method of the pointer instrument according to claim 6-8 any one, is characterized in that, described image acquisition recognition device is any one in camera, video camera, scanner.
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| CN110110733A (en) * | 2019-05-15 | 2019-08-09 | 深圳供电局有限公司 | Readings of pointer type meters method, apparatus, computer equipment and storage medium |
| CN113312941A (en) * | 2020-02-26 | 2021-08-27 | 北京同邦卓益科技有限公司 | Method and device for monitoring instrument panel |
| CN114202910A (en) * | 2020-08-28 | 2022-03-18 | 京东方科技集团股份有限公司 | Instrument recognition device, instrument monitoring system and monitoring method thereof |
| CN111928884A (en) * | 2020-09-10 | 2020-11-13 | 昆明德孚科技开发有限公司 | Surface-mounted electronic reading device |
| CN113029220A (en) * | 2021-01-28 | 2021-06-25 | 开放智能机器（上海）有限公司 | State recognition system and method for industrial instrument panel |
| CN112989963A (en) * | 2021-02-24 | 2021-06-18 | 唐山不锈钢有限责任公司 | Rockwell hardness test process supervision and judgment method based on graph recognition |
| CN112989963B (en) * | 2021-02-24 | 2022-10-18 | 唐山不锈钢有限责任公司 | Rockwell hardness test process supervision and judgment method based on pattern recognition |
| CN113076941A (en) * | 2021-04-20 | 2021-07-06 | 上海阿莱夫信息技术有限公司 | Single pointer dial reading identification method based on video frame fusion |
| CN114323106A (en) * | 2021-12-24 | 2022-04-12 | 航天科技控股集团股份有限公司 | Automatic automobile instrument pointer vision calibration system capable of sliding left and right |
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