CN102175228B - Distance measurement method based on mobile terminal - Google Patents
Distance measurement method based on mobile terminal Download PDFInfo
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- CN102175228B CN102175228B CN 201110029553 CN201110029553A CN102175228B CN 102175228 B CN102175228 B CN 102175228B CN 201110029553 CN201110029553 CN 201110029553 CN 201110029553 A CN201110029553 A CN 201110029553A CN 102175228 B CN102175228 B CN 102175228B
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Abstract
The invention discloses a distance measurement method based on a mobile terminal. The method comprises the following steps of: setting a reference object or a reference scale; locking a target to be measured by using a viewfinder of the mobile terminal, and determining a position of the target to be measured; after the mobile terminal is moved certain displacement under the condition of keeping a state and an elevation angle of the mobile terminal unchanged, re-determining the position of the target to be measured; and determining actual displacement of the target to be measured, and analyzing a distance of the target to be measured according to a similar right triangle formula. By the distance measurement method based on the mobile terminal, a distance between a mobile phone terminal and the target to be measured is measured through an existing camera function of the mobile terminal, so a customer does not need to add new equipment; and the method is simple and practical, and the cost is saved.
Description
Technical field
The present invention relates to a kind of distance-finding method, relate in particular to a kind of distance-finding method based on portable terminal.
Background technology
In the prior art, the stadimeter product comprises laser range finder, infrared range-measurement system and ultrasonic range finder, and the tester of these kinds is independently distance measuring equipment, is used in different measuring precision and measurement range respectively.
In common life, few people can hold distance measuring equipment, but the demand of range finding is but arranged sometimes.Such as, estimate visual and the distance of destination, the required time and the decision vehicles are arrived in decision, and present distance measuring equipment can not satisfy the portable demand of consumer.
Summary of the invention
In order to solve the deficiency that prior art exists, the object of the present invention is to provide a kind of distance-finding method based on portable terminal, the portable terminal that is equipped with camera-enabled is measured distance between portable terminal and the measured target under the prerequisite of not adding new equipment.
In order to accomplish above-mentioned purpose, the distance-finding method based on portable terminal of the present invention may further comprise the steps:
1) sets reference substance or with reference to scale;
The position of 2) locking measured target, and affirmation measured target;
3) reaffirm the position of measured target;
4) confirm the actual displacement of measured target, and parse the distance of measured target.
Wherein, setting reference substance in the said step 1) is the size scale as a reference that utilizes mobile terminal antenna.
Wherein, said step 2) be to utilize the existing view finder of camera lock onto target of portable terminal, and confirm the position of measured target in view finder.
Wherein, said step 3) is the attitude and the elevation angle that keeps portable terminal, and translation portable terminal one segment distance is confirmed the position of measured target in view finder again.
Wherein, said step 4) further may further comprise the steps:
A), obtain the actual moving displacement of portable terminal according to the displacement of measured target in view finder;
B) utilize actual moving displacement and the reference substance of portable terminal or, parse the distance between measured target and the portable terminal with reference to scale.
Wherein, said step b) is according to similar right-angle triangle formula, parses the distance between measured target and the portable terminal.
The present invention has tangible advantage and good effect, adopts the distance-finding method based on portable terminal of the present invention, and the portable terminal with camera function all can be realized distance measurement function, and is both simple and practical, and the client need not to increase new equipment, has practiced thrift hardware cost.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is according to the distance-finding method process flow diagram based on portable terminal of the present invention;
Fig. 2 is according to measured target of the present invention location synoptic diagram;
Fig. 3 is tested distance according to the present invention and measured target displacement relation synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Fig. 1 is according to the distance-finding method process flow diagram based on portable terminal of the present invention, below with reference to Fig. 1, the distance-finding method based on portable terminal of the present invention is described in detail as follows:
The view finder of camera that distance-finding method based on portable terminal of the present invention is based on portable terminal is realized.
At first, in step 101, set reference substance or with reference to scale.Among the present invention, can use the stationary installation of portable terminal,, let antenna get into the view finder visual field such as antenna thing as a reference.Because this device size confirms, the displacement in view finder can simply convert (view finder of camera scaling) become actual displacement; Can also preset some displacement width scale as a reference, such as being 5 pixels apart from object in the displacement of view finder through surveying 1000 meters, the object of 2000 meters distances is 9 pixels, and 3000 meters is 12 pixels or the like.On view finder, show the horizontal line of 5/9/12 pixel, represent 1000/2000/3000 meter distance respectively, displacement that obtains when the user is used and preset displacement width compare, and extrapolate actual displacement;
In step 102, the user selects measured target, through the view finder of camera of portable terminal, and the locking measured target, and confirm the position of measured target in view finder;
In step 103, guaranteeing under the constant prerequisite in the mobile phone attitude and the elevation angle translation portable terminal.The position of blocked before measured target in view finder changes, the reposition that the user can utilize manually or mode is confirmed measured target again in view finder automatically;
In step 104, the user confirms the displacement of measured target in view finder according to measured target new position in view finder;
Fig. 2 is that as shown in Figure 2, the user confirms the position of measured target 201 in portable terminal view finder 202 according to measured target of the present invention location synoptic diagram; The translation portable terminal, measured target 201 produces reposition in portable terminal view finder 202, and L is the displacement of measured target 201 at portable terminal view finder 202.
In step 105,, extrapolate the translational displacement of portable terminal, and, calculate the actual range of measured target to portable terminal with the object of reference of setting or with reference to the scale actual displacement according to the measured target displacement of latched position in view finder successively.
Fig. 3 is tested distance according to the present invention and measured target displacement relation synoptic diagram; As shown in Figure 3, AC is the actual range of measured target to portable terminal, and EC is the translation distance of portable terminal; DB is the actual displacement of preset object of reference; D ' B ' is the actual displacement with reference to scale, and BC is the actual range of object of reference to portable terminal, and B ' C is the reference scale of the different distance of setting.According to as above method of operation in operation, on view finder of camera, confirmed displacement, displacement and a series of is compared definite with reference to scale D ' B ', select immediate scale to introduce right angle similar triangles formula and calculate, obtain target range.Utilize the right angle similar triangles to have rule to know,
AB/DB=AC/EC or AB '/DB '=AC/EC
The actual range that can derive measured target to portable terminal is:
AC=EC*BC/ (EC-DB) or AC=EC*B ' C/ (EC-D ' B ').
Among the present invention, do not change the portable terminal attitude and the elevation angle when the translation, can correct the position with gravity sensor or gyro sensor prompting user in order to guarantee the user.
Distance-finding method based on portable terminal of the present invention; Can come to accomplish very easily the function of range finding through the daily portable portable terminal that has camera function, existing practicality also has recreational, can satisfy the demand of user's (perhaps software) for nearer relatively precision ranging data; Simultaneously can also be auxiliary mutually with GIS; Through with the distance of some obvious landmarks, confirm self-position, in particular cases even can replace GPS.
One of ordinary skill in the art will appreciate that: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme of being put down in writing among aforementioned each embodiment, perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. distance-finding method based on portable terminal, this method may further comprise the steps:
1) sets reference substance or with reference to scale;
The position of 2) locking measured target, and affirmation measured target;
3) reaffirm the position of measured target;
4), obtain the actual moving displacement of portable terminal according to the displacement of measured target in view finder; Utilize actual moving displacement and the reference substance of portable terminal or,, parse the distance between measured target and the portable terminal according to similar right-angle triangle formula with reference to scale.
2. the distance-finding method based on portable terminal according to claim 1 is characterized in that, sets reference substance in the said step 1) and be the size scale as a reference that utilizes mobile terminal antenna.
3. the distance-finding method based on portable terminal according to claim 1 is characterized in that, said step 2) be to utilize the existing view finder of camera lock onto target of portable terminal, and confirm the position of measured target in view finder.
4. the distance-finding method based on portable terminal according to claim 1 is characterized in that, said step 3) is the attitude and the elevation angle that keeps portable terminal, and translation portable terminal one segment distance is confirmed the position of measured target in view finder again.
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| CN 201110029553 CN102175228B (en) | 2011-01-27 | 2011-01-27 | Distance measurement method based on mobile terminal |
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| CN 201110029553 CN102175228B (en) | 2011-01-27 | 2011-01-27 | Distance measurement method based on mobile terminal |
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| CN102175228A CN102175228A (en) | 2011-09-07 |
| CN102175228B true CN102175228B (en) | 2012-09-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017730B (en) * | 2012-11-30 | 2015-04-01 | 中兴通讯股份有限公司 | Single-camera ranging method and single-camera ranging system |
| CN103063138B (en) * | 2013-01-24 | 2016-08-10 | 惠州Tcl移动通信有限公司 | The method of mobile terminal camera Measuring Object size and mobile terminal |
| CN104864854B (en) * | 2015-06-01 | 2017-09-22 | 中国科学院光电技术研究所 | Monocular vision pose measurement method based on weighting constraints of side length, internal angle and shape factor of triangle |
| CN105783731A (en) * | 2016-03-08 | 2016-07-20 | 上海易景信息科技有限公司 | Method for measuring length of measured object by means of double cameras |
| TW201804131A (en) * | 2016-07-20 | 2018-02-01 | 陳進益 | Portable distance measuring device with integrated dual lens and curved optical disc capable of increasing angle resolution by the cooperation of an angle reading module of the curved optical disc and the image-based distance measurement of the dual lenses |
| CN106338248B (en) * | 2016-09-30 | 2019-01-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method and device of the detecting distance based on terminal |
| CN109990675B (en) * | 2019-04-18 | 2021-06-29 | 内蒙古工业大学 | Ancient building measuring scale |
| CN111288967B (en) * | 2020-01-19 | 2020-10-27 | 广州翰南工程技术有限公司 | Remote high-precision displacement detection method based on machine vision |
| CN111473766A (en) * | 2020-04-01 | 2020-07-31 | 长沙艾珀科技有限公司 | Intelligent photographing distance measuring method |
| CN112229381A (en) * | 2020-09-23 | 2021-01-15 | 南京航空航天大学 | Smart phone ranging method using arm length and camera |
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| CN101881613A (en) * | 2010-06-21 | 2010-11-10 | 邓丹 | Method for measuring distance between two points |
| CN101943580A (en) * | 2009-07-07 | 2011-01-12 | 宏达国际电子股份有限公司 | Method and device for detecting distance from target and computer program product thereof |
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| US8000721B2 (en) * | 2008-02-29 | 2011-08-16 | Sony Ericsson Mobile Communications Ab | Wireless communication terminals and methods that display relative direction and distance therebetween responsive to acceleration data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101943580A (en) * | 2009-07-07 | 2011-01-12 | 宏达国际电子股份有限公司 | Method and device for detecting distance from target and computer program product thereof |
| CN101881613A (en) * | 2010-06-21 | 2010-11-10 | 邓丹 | Method for measuring distance between two points |
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Owner name: BEIJING BORQS SOFTWARE TECHNOLOGY CO., LTD. Effective date: 20121130 Owner name: BORQS COMMUNICATION TECHNOLOGY (BEIJING) CO., LTD. Free format text: FORMER OWNER: BEIJING BORQS SOFTWARE TECHNOLOGY CO., LTD. Effective date: 20121130 |
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Effective date of registration: 20121130 Address after: 100015, B23 building, A, Hengtong business garden, No. 10 Jiuxianqiao Road, Beijing, Chaoyang District Patentee after: Borqs Beijing Ltd. Patentee after: Beijing Borqs Software Technology Co., Ltd. Address before: 100102 D building, building 9, South Central Road, Chaoyang District, Wangjing, Beijing, Wangjing Patentee before: Beijing Borqs Software Technology Co., Ltd. |