CN102305589A - Method and system for laser ranging - Google Patents
Method and system for laser ranging Download PDFInfo
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- CN102305589A CN102305589A CN201110213551A CN201110213551A CN102305589A CN 102305589 A CN102305589 A CN 102305589A CN 201110213551 A CN201110213551 A CN 201110213551A CN 201110213551 A CN201110213551 A CN 201110213551A CN 102305589 A CN102305589 A CN 102305589A
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Abstract
The invention is suitable for the technical field of electronic measuring, and provides a method and a system of laser ranging and a television, wherein the method comprises the following steps: transmitting two parallel laser beams with known distances to a measured object, and collecting images of the measured object, wherein the images comprise two laser points formed on the measured object by the parallel laser beams; acquiring the map range of the two laser points on the images of the measured object, and calculating the actual range between the measured points according to the map range of the two laser points, the actual range of the two laser points and the measured points on the images of the acquired and tested object; and outputting and displaying the actual range between the measured points. According to the invention, the object is not required to be contact for users to measure, simultaneously the requirement for measuring personnel is not high, and the facts that the method and the system in the measuring process are convenient and simple, the working amount is reduced greatly, and the cost is lower are realized.
Description
Technical field
The invention belongs to electronic measuring technology field, relate in particular to a kind of method and system of laser ranging.
Background technology
In daily life; Contact type measurement object length to object adopts ruler usually; Tape measure; Milscales etc., these instruments all need just energy measurement of contact measurement object, and are very inconvenient to the object that is difficult to contact measurement; For example; For window, the position that roof etc. are difficult to contact just is difficult to measure, and the measurement data amount causes workload to be multiplied big the time.Non-cpntact measurement is a kind of emerging metering system; Has noncontact; Measurement range is wide; Measuring accuracy is high; Advantages such as the surveying work amount is little; Present adoptable non-contact measurement equipment mainly comprises: laser interferometer; Grating chi etc.; Though yet these instrument measuring accuracy are high, complex structure needs survey crew to have certain specialized technical knowledge to use; And the cost of equipment and measurement is all very high;, too expensive and not easy to operate concerning general family measures, if measuring, therefore existing family adopts contact type measurement; Then very inconvenient to the object that is difficult to contact measurement; Complicated operation, and the surveying work amount is big, adopts non-contact measurement that the too high and not easy-operating problem of cost is then arranged.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of laser ranging; Be intended to solve existing family and measure the employing contact type measurement being difficult to the object ten minutes inconvenience of contact measurement; Complicated operation; And the surveying work amount is big, adopts the then too high and not easy-operating problem of cost of non-contact measurement.
The embodiment of the invention is achieved in that a kind of method of laser ranging, and said method comprises the steps:
Emission two is restrainted the known collimated laser beam of distance to testee;
Gather the image of testee, said image comprises that collimated laser beam forms two laser spots on testee;
On the image of said measured object, obtain the map range of two laser spots, the measurement point according on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains calculates the actual range between said measurement point;
Output shows the actual range between said measurement point.
The embodiment of the invention also provides a kind of laser distance measuring system, and said system comprises:
Generating laser is used to launch the known collimated laser beam of two bundle distances to testee;
Camera is used to gather the image of testee, and said image comprises that the collimated laser beam of generating laser emission forms two laser spots on testee;
Televisor; Be used on the image of said measured object, obtaining the map range of two laser spots; According to the measurement point on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains; Calculate the actual range between said measurement point, and show the actual range between said measurement point.
In embodiments of the present invention; When needs are measured measured object; Then launch the known collimated laser beam of two bundle distances to testee; Gather the image of testee; On the image of above-mentioned measured object, obtain the map range of two laser spots; Map range according to above-mentioned two laser spots; Measurement point on the actual range of two laser spots and the measured object image that obtains; Calculate the actual range between above-mentioned measurement point; And output shows the actual range between above-mentioned measurement point; Making the user when measuring, needn't contact object measures; Also not high to the requirement of survey crew simultaneously, it is easy to operate to be implemented in measuring process; Simply; Reduce workload greatly; And cost is lower.
Description of drawings
Fig. 1 is the process flow diagram of realization of the method for the laser ranging that provides of the embodiment of the invention one;
Fig. 2 is the process flow diagram of realization of the method for the laser ranging that provides of the embodiment of the invention two;
Fig. 3 is the structural drawing of the laser distance measuring system that provides of the embodiment of the invention three.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
When the embodiment of the invention is measured measured object when needs; Then launch the known collimated laser beam of two bundle distances to testee; Gather the image of testee; On the image of above-mentioned measured object, obtain the map range of two laser spots; According to the measurement point on the actual range of the map range of above-mentioned two laser spots, two laser spots and the measured object image that obtains; Calculate the actual range between above-mentioned measurement point, and output shows the actual range between above-mentioned measurement point.
The embodiment of the invention comprises a kind of method of laser ranging, and said method comprises the steps:
Emission two is restrainted the known collimated laser beam of distance to testee;
Gather the image of testee, said image comprises that collimated laser beam forms two laser spots on testee;
On the image of said measured object, obtain the map range of two laser spots, the measurement point according on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains calculates the actual range between said measurement point;
Output shows the actual range between said measurement point.
The embodiment of the invention also provides a kind of laser distance measuring system, and said system comprises:
Generating laser is used to launch the known collimated laser beam of two bundle distances to testee;
Camera is used to gather the image of testee, and said image comprises that the collimated laser beam of generating laser emission forms two laser spots on testee;
Televisor; Be used on the image of said measured object, obtaining the map range of two laser spots; According to the measurement point on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains; Calculate the actual range between said measurement point, and show the actual range between said measurement point.
Below in conjunction with specific embodiment realization of the present invention is described in detail:
Embodiment one
Application scenarios of the present invention can be in the family Measuring Object apart from the time; If being in, object to be measured relatively is difficult to the position measured; Then camera, generating laser and portable terminal or home terminal can be combined to measure; Televisor for example; To realize measuring the size of testee in the family, see the content of following examples for details:
Fig. 1 shows the process flow diagram of realization of the method for the laser ranging that the embodiment of the invention one provides, and details are as follows:
In step S101, emission two is restrainted the known collimated laser beam of distance to testee.
In step S102, gather the image of testee, above-mentioned image comprises that collimated laser beam forms two laser spots on testee.
Because laser has good direction consistance; For example; If two transmitters are at a distance of 5cm; Two laser spots distances according to body surface at grade are 5cm also so; Therefore launch the known collimated laser beam of two bundle distances to testee; Then gather on the image of testee and can comprise that also collimated laser beam forms two laser spots on testee, the distance between these two laser spots is identical with the distance between parallel beam.
The image that can on display device, show in embodiments of the present invention, the measured object of above-mentioned collection.
In step S103; On the image of above-mentioned measured object, obtain the map range of two laser spots; Measurement point according on the actual range of the map range of above-mentioned two laser spots, two laser spots and the measured object image that obtains calculates the actual range between above-mentioned measurement point.
In step S104, output shows the actual range between above-mentioned measurement point.
In embodiments of the present invention; When output shows the actual range between above-mentioned measurement point, can also be through the actual range between the above-mentioned measurement point of voice broadcast so that the user can't see show measure as a result the time; Still can hear the result of measurement, promote user's experience.
In embodiments of the present invention; When needs are measured measured object; Then launch the known collimated laser beam of two bundle distances to testee; Gather the image of testee; On the image of above-mentioned measured object, obtain the map range of two laser spots; Map range according to above-mentioned two laser spots; Measurement point on the actual range of two laser spots and the measured object image that obtains; Calculate the actual range between above-mentioned measurement point; And output shows the actual range between above-mentioned measurement point; Making the user when measuring, needn't contact object measures; Also not high to the requirement of survey crew simultaneously, it is easy to operate to be implemented in measuring process; Simply; Reduce workload greatly; And cost is handed over low.
Embodiment two
Fig. 2 shows the process flow diagram of realization of the method for the laser ranging that the embodiment of the invention two provides, and details are as follows:
In step S201, emission two is restrainted the known collimated laser beam of distance to testee.
In step S202, gather the image of testee, above-mentioned image comprises that collimated laser beam forms two laser spots on testee.
In step S203, show the image of the measured object of above-mentioned collection.
In step S204, on the image of above-mentioned measured object, obtain the map range of two laser spots, and the proportionate relationship of the actual range of the map range of definite above-mentioned two laser spots and two laser spots.
In inventive embodiments; The actual range of two laser spots is the distance between the parallel laser beam of emission; Proportionate relationship has been described the corresponding relation of actual range of map range and the measured object size at measured object image place; For ease can be with proportionate relationship with formulate; For example the map range of actual range/two laser spots of proportionate relationship=two laser spots also can be the actual range of/two laser spots of distance on the figure of proportionate relationship=two laser spots.
In step S205, obtain the measurement point on the measured object image.
In embodiments of the present invention, the step of obtaining the measurement point on the measured object image can be obtained the measurement point that the user selects on the measured object image; Perhaps the preset measurement point on the measured object image is obtained in identification automatically.
Wherein, On the measured object image, select measurement point by the user; At this moment; The user can select measurement point through telepilot on the image of the measured object that shows; For example; When the interface of measured object figure appears in televisor; A tracking cross can appear simultaneously; Through telepilot up and down key move this cursor certain position to measured object; Press definite key, then can confirm starting point and the terminating point measured, and the measurement point that the user can also repeatedly select on the measured object image is measured; For example can select the measurement point on the Width to measure, select the measurement point on the length direction to measure then.Realize that the user can be according on images displayed, freely selecting measurement point to measure.
Wherein, Can discern the preset measurement point that obtains on the measured object image automatically; At this moment; Can preset measurement point; And can preset a plurality of points that need measurement; For example; It is object 2 maximum points of distance in the horizontal direction that preset measurement point can be set; Perhaps 2 maximum points of distance on the vertical direction; 2 maximum points of distance on other direction perhaps also can be set, certainly, might not measure the distance of the point-to-point transmission of ultimate range; Can also adopt other predetermined manner; Only provide some examples here, but not as limit, the user can select to set according to actual conditions; Not needing to realize the user manually just can show the actual range between preset the measurement; Especially for some article in irregular shape, can be easy to record its actual distance, in addition; Can also measure the distance between a plurality of measurements simultaneously, remove from repeatedly and having measured.
In step S206, calculate the map range between the said measurement point that obtains.
In step S207,, calculate the actual range between above-mentioned measurement point according to map range between the measurement point of aforementioned calculation and aforementioned proportion relation.
In embodiments of the present invention; Known the map range between measurement point; Then can be easy to obtain the actual range between measurement point under a proportional relationship; For ease; When the map range of actual range/two laser point of proportionate relationship=two laser point; Then calculated and multiply by corresponding proportionate relationship after the map range between measurement point and can obtain the actual range between measurement point; Otherwise; When on the figure of proportionate relationship=two laser point during, also can obtain the actual range between measurement point divided by corresponding proportionate relationship after having calculated the map range between measurement point apart from the actual range of/two laser point.
In step S208, output shows the actual range between above-mentioned measurement point.
In embodiments of the present invention; On the image of measured object, obtain the map range of two laser spots; And the proportionate relationship of the actual range of the map range of definite two laser spots and two laser spots; Obtain the measurement point on the measured object image; And can be according to map range between the measurement point that calculates and the proportionate relationship of confirming; Calculate the actual range between measurement point, simple and convenient.
Embodiment three
Fig. 3 shows the structural drawing of the laser distance measuring system that the embodiment of the invention three provides, and for the ease of explanation, only shows the part relevant with the embodiment of the invention.
In embodiments of the present invention, laser distance measuring system comprises camera 31, generating laser 32, televisor 33, wherein,
Generating laser 32 emissions two are restrainted the known collimated laser beam of distance to testee.
In embodiments of the present invention, can on a generating laser, be with two laser head emission collimated laser beams, also can be by two generating laser emission of lasering beam with a laser head.
The image that camera 31 is gathered testee, the image of collection comprise that the collimated laser beam of generating laser 32 emissions forms two laser spots on testee.
Further, televisor 33 specifically comprises:
Proportionate relationship confirms that unit 331 obtains the map range of two laser spots on the image of the measured object that said televisor 33 shows, and the proportionate relationship of the actual range of the map range of definite said two laser spots and two laser spots.
Measurement point acquiring unit 332 obtains the measurement point on the measured object image.
The map range that computing unit 333 calculates between the said measurement point that obtains, and, calculate the actual range between said measurement point according to map range between the measurement point of said calculating and said proportionate relationship.
Further, televisor 33 can also show the image of the measured object of collection, and said measurement point acquiring unit 332 also comprises:
First acquisition module 3321 obtains the measurement point that the user selects on the measured object image;
The said measurement point acquiring unit of configuration module 3323 configurations selects first acquisition module 3321 or second acquisition module 3322 to obtain the measurement point on the measured object.
Further, laser distance measuring system also comprises the actual range between the said measurement point of voice announcer 34 voice broadcasts.
Further, generating laser 32 and camera 31 and institute's televisor 33 wireless connections.
Further, said generating laser 32 is built in institute's televisor 33 with camera 31.
To sum up, the beneficial effect of the embodiment of the invention is:
1; When needs are measured measured object; Through launching the known collimated laser beam of two bundle distances to testee; Gather the image of testee; On the image of above-mentioned measured object, obtain the map range of two laser spots; Map range according to above-mentioned two laser spots; Measurement point on the actual range of two laser spots and the measured object image that obtains; Calculate the actual range between above-mentioned measurement point; And output shows the actual range between above-mentioned measurement point; Making the user when measuring, needn't contact object measures; Also not high to the requirement of survey crew simultaneously, it is easy to operate to be implemented in measuring process; Simply; Reduce workload greatly; And cost is lower.
2, on the image of measured object, obtain the map range of two laser spots; And the proportionate relationship of the actual range of the map range of definite two laser spots and two laser spots; Obtain the measurement point on the measured object image; And can be according to map range between the measurement point that calculates and the proportionate relationship of confirming; Calculate the actual range between measurement point, simple and convenient.
It should be noted that among the said system embodiment that each included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize function corresponding; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition; One of ordinary skill in the art will appreciate that all or part of step that realizes in above-mentioned each embodiment method is to instruct relevant hardware to accomplish through program; Corresponding program can be stored in the computer read/write memory medium; Described storage medium is like ROM/RAM, disk or CD etc.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a laser ranging is characterized in that, said method comprises the steps:
Emission two is restrainted the known collimated laser beam of distance to testee;
Gather the image of testee, said image comprises two laser spots that collimated laser beam forms on testee;
On the image of said measured object, obtain the map range of two laser spots, the measurement point according on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains calculates the actual range between said measurement point;
Output shows the actual range between said measurement point.
2. the method for claim 1; It is characterized in that; The said map range of on the image of said measured object, obtaining two laser spots; According to the measurement point on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains, the step of calculating the actual range between said measurement point is specially:
On the image of said measured object, obtain the map range of two laser spots, and the proportionate relationship of the actual range of the map range of definite said two laser spots and two laser spots;
Obtain the measurement point on the measured object image;
Calculate the map range between the said measurement point that obtains;
According to map range between the measurement point of said calculating and said proportionate relationship, calculate the actual range between said measurement point.
3. method as claimed in claim 2 is characterized in that, after the step of the image of said collection testee, said method also comprises the steps:
The image that shows the measured object of said collection;
The said step of obtaining the measurement point on the measured object image is specially:
Obtain the measurement point that the user selects on the measured object image; Perhaps
Automatically the preset measurement point on the measured object image is obtained in identification.
4. the method for claim 1 is characterized in that, said method also comprises the steps:
Actual range between the said measurement point of voice broadcast.
5. a laser distance measuring system is characterized in that, said system comprises:
Generating laser is used to launch the known collimated laser beam of two bundle distances to testee;
Camera is used to gather the image of testee, and said image comprises that the collimated laser beam of generating laser emission forms two laser spots on testee;
Televisor; Be used on the image of said measured object, obtaining the map range of two laser spots; According to the measurement point on the actual range of the map range of said two laser spots, two laser spots and the measured object image that obtains; Calculate the actual range between said measurement point, and show the actual range between said measurement point.
6. system as claimed in claim 5 is characterized in that, said televisor also comprises:
Proportionate relationship is confirmed the unit, is used on the image of the measured object of said demonstration, obtaining the map range of two laser spots, and confirms the proportionate relationship of actual range of map range and two laser spots of said two laser spots;
The measurement point acquiring unit is used to obtain the measurement point on the measured object image;
Computing unit is used to calculate the map range between the said measurement point that obtains, and according to map range between the measurement point of said calculating and said proportionate relationship, calculates the actual range between said measurement point.
7. system as claimed in claim 6 is characterized in that, said televisor also is used to show the image of the measured object of said collection;
Said measurement point acquiring unit also comprises:
First acquisition module is used to obtain the measurement point that the user selects on the measured object image;
Second acquisition module is used for identification automatically and obtains the preset measurement point on the measured object image; And
Configuration module is used to dispose said measurement point acquiring unit and selects first acquisition module or second acquisition module to obtain the measurement point on the measured object.
8. system as claimed in claim 5 is characterized in that, said system also comprises:
Voice announcer is used for the actual range between the said measurement point of voice broadcast.
9. system as claimed in claim 5 is characterized in that, said generating laser and camera and institute's televisor wireless connections.
10. system as claimed in claim 5 is characterized in that, said generating laser and camera are built in institute's televisor.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018748A (en) * | 2012-12-04 | 2013-04-03 | 常州市微朗电子科技有限公司 | Laser range finder |
| CN103576724A (en) * | 2012-08-08 | 2014-02-12 | 联想(北京)有限公司 | Image acquirer, electronic device and light adjusting method |
| CN105465546A (en) * | 2015-12-30 | 2016-04-06 | 北京隆科兴非开挖工程股份有限公司 | Dimension measurement mechanism for flaws in pipelines and wheel type pipeline detection robot |
| CN106546216A (en) * | 2016-11-01 | 2017-03-29 | 广州视源电子科技股份有限公司 | Distance measurement method, device, camera and mobile terminal |
| CN106705875A (en) * | 2015-11-18 | 2017-05-24 | 中国石油天然气股份有限公司 | Tunnel crack measurement method and device |
| CN106908802A (en) * | 2017-03-07 | 2017-06-30 | 长安大学 | A kind of laser beam space positioner and method based on image procossing |
| CN107063174A (en) * | 2017-05-05 | 2017-08-18 | 杭州欧镭激光技术有限公司 | A kind of laser measuring device for measuring and its application process |
| CN107218891A (en) * | 2017-07-10 | 2017-09-29 | 北京星闪世图科技有限公司 | A kind of dimension measurement method, apparatus and system |
| CN107928675A (en) * | 2017-11-22 | 2018-04-20 | 王华锋 | A kind of trunk measuring method being combined based on deep learning and red dot laser |
| CN109269421A (en) * | 2018-09-14 | 2019-01-25 | 李刚 | Omnipotent shooting measuring scale |
| CN109443325A (en) * | 2018-09-25 | 2019-03-08 | 上海市保安服务总公司 | Utilize the space positioning system of floor-mounted camera |
| CN109655837A (en) * | 2017-10-10 | 2019-04-19 | 大族激光科技产业集团股份有限公司 | A kind of laser distance measurement method and laser range finder |
| CN110608679A (en) * | 2019-09-16 | 2019-12-24 | 深圳市艾伯数字有限公司 | Non-contact length measuring device and method |
| CN111325793A (en) * | 2020-02-18 | 2020-06-23 | 江苏科技大学 | System and method for dynamically calibrating pixel size based on light spot in image measurement |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576724A (en) * | 2012-08-08 | 2014-02-12 | 联想(北京)有限公司 | Image acquirer, electronic device and light adjusting method |
| CN103576724B (en) * | 2012-08-08 | 2016-08-10 | 联想(北京)有限公司 | A kind of image acquisition device, electronic equipment and light control method |
| CN103018748A (en) * | 2012-12-04 | 2013-04-03 | 常州市微朗电子科技有限公司 | Laser range finder |
| CN106705875A (en) * | 2015-11-18 | 2017-05-24 | 中国石油天然气股份有限公司 | Tunnel crack measurement method and device |
| CN105465546A (en) * | 2015-12-30 | 2016-04-06 | 北京隆科兴非开挖工程股份有限公司 | Dimension measurement mechanism for flaws in pipelines and wheel type pipeline detection robot |
| CN106546216A (en) * | 2016-11-01 | 2017-03-29 | 广州视源电子科技股份有限公司 | Distance measurement method, device, camera and mobile terminal |
| CN106908802A (en) * | 2017-03-07 | 2017-06-30 | 长安大学 | A kind of laser beam space positioner and method based on image procossing |
| CN106908802B (en) * | 2017-03-07 | 2023-09-05 | 长安大学 | Laser beam space positioning device and method based on image processing |
| WO2018201566A1 (en) * | 2017-05-05 | 2018-11-08 | 杭州欧镭激光技术有限公司 | Laser detection device, and application method thereof |
| CN107063174A (en) * | 2017-05-05 | 2017-08-18 | 杭州欧镭激光技术有限公司 | A kind of laser measuring device for measuring and its application process |
| CN107218891A (en) * | 2017-07-10 | 2017-09-29 | 北京星闪世图科技有限公司 | A kind of dimension measurement method, apparatus and system |
| CN109655837A (en) * | 2017-10-10 | 2019-04-19 | 大族激光科技产业集团股份有限公司 | A kind of laser distance measurement method and laser range finder |
| CN109655837B (en) * | 2017-10-10 | 2020-10-30 | 大族激光科技产业集团股份有限公司 | Laser ranging method and laser range finder |
| CN107928675A (en) * | 2017-11-22 | 2018-04-20 | 王华锋 | A kind of trunk measuring method being combined based on deep learning and red dot laser |
| CN109269421A (en) * | 2018-09-14 | 2019-01-25 | 李刚 | Omnipotent shooting measuring scale |
| CN109443325A (en) * | 2018-09-25 | 2019-03-08 | 上海市保安服务总公司 | Utilize the space positioning system of floor-mounted camera |
| CN110608679A (en) * | 2019-09-16 | 2019-12-24 | 深圳市艾伯数字有限公司 | Non-contact length measuring device and method |
| CN111325793A (en) * | 2020-02-18 | 2020-06-23 | 江苏科技大学 | System and method for dynamically calibrating pixel size based on light spot in image measurement |
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Application publication date: 20120104 |