CN109211116A - The optical calibrating and measurement method of flexibility test - Google Patents
The optical calibrating and measurement method of flexibility test Download PDFInfo
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- CN109211116A CN109211116A CN201710521607.8A CN201710521607A CN109211116A CN 109211116 A CN109211116 A CN 109211116A CN 201710521607 A CN201710521607 A CN 201710521607A CN 109211116 A CN109211116 A CN 109211116A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of optical calibrating and measurement method of flexibility test, comprising steps of S1, is arranged testboard in the top of leg measured zone one end, reflecting rate is arranged on testboard different from the zero line and at least two mark points of background area；S2, nobody when shoot to obtain test standard original image, testboard standard picture is obtained after carrying out distortion correction, testboard canonical algorithm figure is obtained after carrying out algorithm process, physical length corresponding to each pixel is obtained according to the ratio between the pixel distance and actual range between two mark points；S3, shooting obtains the real-time original image of testboard after starting, and testboard realtime graphic is obtained after distortion correction；S4 finds all hand profiles and marks the rectangle that can just be surrounded, and calculates rectangle and is located at the edge of finger tip and the pixel distance of zero line, obtains result data according to physical length corresponding to each pixel.Present invention reduces maintenance cost and there is good test experience.
Description
Technical field
A kind of tested the present invention relates to a kind of calibration of physique test and measurement method more particularly to flexibility calibration and
Measurement method.
Background technique
Currently, as socio-economic development, the people are right to the raising of health understanding and the variation of international situation, country
The enhancing of whole national physique has been lifted to strategic height.Under this overall background, there is an urgent need to nationwide physical condition into
More efficient, the accurate monitoring of row.
In " national physique measures standard manual and standard (adult part) " of General Administration of Sport's publication, push-up
It is put into one of the test item of national physique.
But current flexibility test, what is generallyd use is the mode of finger push measuring rod, to mechanical part according to
Rely larger, test experience is poor under unattended autonomous carry out test case and mechanical part is easier to damage, maintenance
Higher cost.
Therefore, in face of the raising of contemporary people's quality of life, more concern to physical examinations, it is above-mentioned refer to it is existing soft
Toughness test method does not have good test experience, and the maintenance cost tested still has to be reduced.
Summary of the invention
The main object of the present invention be in order to the existing test experience of the flexibility test for solving the prior art is poor and
The high technical problem of maintenance cost.
In order to solve the above technical problem, the present invention provides the optical calibrating and measurement method of a kind of test of flexibility, packets
Include step: step S1 marks leg measured zone in test zone, is arranged in the top of leg measured zone one end and corresponds to
In the testboard of hand stretching, extension test, zero line is arranged on the testboard according to the position of lower section leg measured zone, is surveyed
It is additionally provided at least two mark points in test stand, the reflecting rate of the zero line and mark point is different from background area；Step S2,
Before testing nobody when, by be located at test zone side video camera the testboard is shot, obtain test logo
Quasi- original image obtains testboard standard picture after carrying out distortion correction to the test standard original image, to the survey
Test stand standard picture carries out algorithm process, testboard canonical algorithm figure is obtained, according to two in testboard canonical algorithm figure
The ratio between pixel distance and actual range between a mark point obtains physical length corresponding to each pixel；Step
S3, after test starts, the video camera by being located at test zone side shoots the testboard for having tester's palm, obtains
The real-time original image of testboard obtains testboard realtime graphic after carrying out distortion correction to the real-time original image of the testboard；
Step S4, all hand profiles are found in the testboard realtime graphic and mark one can just surround all hands
The rectangle of profile, while the zero line is found out in the testboard realtime graphic, it calculates the rectangle and is located at hand profile
The pixel distance at the edge of finger tip and the zero line, actual (tube) length corresponding to each pixel according to obtained in step S2
Degree obtains the result data of flexibility test.
The optical calibrating and measurement method of the described flexibility test, wherein the leg measured zone be provided with to
Few label lines, for the reflecting rate of the label lines different from background area, step S2 passes through video camera to the leg later
Portion's measured zone is shot, and when finding that the label lines are blocked, then discriminating test starts, and executes step backward
S3。
The optical calibrating and measurement method of the flexibility test, wherein in step s3 and in step S4, camera shooting
Machine is continuously shot test zone with certain frame per second, and then obtains multiple modified rectangular edges edges and zero line
Pixel distance takes physical length corresponding to the maximum value in pixel distance, the final numerical value as flexibility test.
The optical calibrating and measurement method of the flexibility test, wherein there are three above marks for setting on testboard
Remember point, the position in step S2 and S3 according to each mark point in original image carries out distortion correction to original image.
The optical calibrating and measurement method of the flexibility test, wherein the nearly corner location of testboard is respectively set
There is a mark point, hand standard picture area is marked in testboard standard picture according to the position of four mark points in step S2
Hand realtime graphic is found out in domain, the position in step S4 first in the testboard realtime graphic corresponding to testboard standard picture
Then all hand profiles are found in region in hand realtime graphic region.
The optical calibrating and measurement method of the described flexibility test, wherein in step S1 also on testboard setting with
The perpendicular graduation mark of palm extending direction is when test to facilitate tester directly to read test value.
The optical calibrating and measurement method of the flexibility test, wherein the algorithm process carried out in step s 2
Including gray scale, fuzzy and binaryzation.
The invention has the advantages that optical calibrating and measurement method that flexibility of the invention is tested pass through analysis
The relationship of the position of tester's palm and pixel distance and physical length in image in captured image, calculates flexible automatically
Property test needed for numerical value reduced without adding additional mechanical part without staff from other subtest when test
Maintenance cost and have good test experience.
Detailed description of the invention
Fig. 1 be the present invention test zone nobody when the schematic diagram that is shot；
Fig. 2 is the leg measured zone shot in the present invention and test standard original image；
Fig. 3 is that Fig. 2 carries out the leg measured zone obtained after distortion correction and testboard standard picture；
Fig. 4 is the schematic diagram in the hand standard picture region that the embodiment of the present invention is marked；
Fig. 5 is the schematic diagram that the present invention is shot in test zone someone test；
Fig. 6 is the schematic diagram for the rectangle that can surround all hand profiles that the present invention is marked.
Specific embodiment
The optical calibrating and measurement method of flexibility test of the invention are applied flexible to human body using optical mode
Property is tested.Principle and structure in order to further illustrate the present invention, now in conjunction with attached drawing to the preferred embodiment of the present invention into
Row is described in detail.
The optical calibrating and measurement method of flexibility test of the invention comprise the following steps that
Step S1: marking leg measured zone in test zone, and the top setting in leg measured zone one end corresponds to
The testboard of hand stretching, extension test, is arranged zero line on the testboard according to the position of lower section leg measured zone, tests
It is additionally provided at least two mark points on platform, the reflecting rate of the zero line and mark point is different from background area.
Shown in please referring to Fig.1 to Fig.3, in a specific embodiments of the present invention, test zone is a measurement pad 1.It is surveying
Leg measured zone 11 is marked on amount pad 1, leg measured zone 11 may be provided at least one label lines 111.Testboard 12
The top of 11 right end of leg measured zone is set, and the lower end of testboard 12 is connected to leg measurement by a support column 13 support
The right end edge in region 11, the zero line 121 being arranged on testboard 12 the right with leg measured zone 11 in the vertical direction
Along aligning, two mark points of setting are at least needed on testboard 12.The reflecting rate of mark point and label lines 111 is different from back
Scene area.Test value is directly read in order to facilitate tester, it can also be in setting on testboard 12 and palm extending direction when testing
Perpendicular graduation mark 127.
Step S2: before testing nobody when, by be located at test zone side video camera the testboard is clapped
It takes the photograph, obtains test standard original image, obtain test logo after carrying out distortion correction to the test standard original image
Quasi- image carries out algorithm process to the testboard standard picture, obtains testboard canonical algorithm figure, according to test standard
The ratio between the pixel distance and actual range between two mark points in algorithm figure obtains corresponding to each pixel
Physical length.
Please continue to refer to shown in Fig. 1 to Fig. 3, a upper side of measurement pad 1, the video camera 2 in Fig. 1 is arranged in video camera 2
It shoots obtained leg measured zone and test standard original image is as shown in Figure 2.Because position is arranged in video camera 2
Limitation, the test standard original image shot can not be the front view of upper surface, so need to carry out distortion correction,
To obtain leg measured zone and testboard standard picture as shown in Figure 3.It carries out that each mark point can be utilized when distortion correction
Position in test standard original image, but need that three or more mark points are arranged in testboard 12, specifically in this reality
Shi Zhong is respectively arranged with a mark point, respectively mark point 122, mark point 123, label in the nearly corner location of testboard 12
Point 124 and mark point 125.Such as testboard canonical algorithm figure is obtained after carrying out algorithm process to testboard standard picture
In, the pixel distance between mark point 122 and mark point 123 is W, and the actual range between mark point 122 and mark point 123
For L, then physical length PL=L/W corresponding to each pixel.Certainly, other in four mark points also may be selected herein
Meaning two carries out the operation to obtain physical length PL corresponding to each pixel.
Further, it can also be marked in testboard standard picture according to the position of four mark points 122 in step s 2
Hand standard picture region, it is as shown in Figure 4 that opponent's ministerial standard image-region carries out the figure obtained after algorithm process.
The algorithm process carried out in step s 2 may include gray scale, fuzzy and binaryzation.
Upon step s 2, it can also continue to shoot leg measured zone 11 by video camera 2, when discovery mark line
Discriminating test starts when item 111 is blocked, and can execute subsequent step S3 backward.
Step S3: after test starts, by being located at the video camera of test zone side to the testboard for having tester's palm
It is shot, obtains the real-time original image of testboard, surveyed after carrying out distortion correction to the real-time original image of the testboard
Test stand realtime graphic；
Step S4: finding all hand profiles in the testboard realtime graphic and mark one can just surround it is all
The rectangle of hand profile, while the zero line is found out in the testboard realtime graphic, it calculates the rectangle and is located at hand
The pixel distance at the edge of profile finger tip and the zero line, reality corresponding to each pixel according to obtained in step S2
Length obtains the result data of flexibility test.
Palm extends to highest distance position and needs certain process when due to flexibility test, in order to enable video camera can and
When capture palm and extend to the image of highest distance position at that moment, in step s3, it is preferred that video camera 2 is with certain frame per second
Test zone is continuously shot, in step s3 and in step S4, video camera 2 with certain frame per second to test zone into
Row is continuously shot, and then obtains multiple modified rectangular edges along the pixel distance with zero line.
It please refers to shown in Fig. 5, tester 3 carries out push-up test on measurement pad 1 at this time, and tester 3 is sitting in leg
Portion's measured zone 11 and sole are supported on support column 13, and the palm of tester 3 is attached on the upper surface of testboard 2 and along upper
It stretches forward on surface.Certain in a flash, shot by video camera 2, the real-time original image of testboard can be obtained at this time.
In conjunction with as shown in fig.6, also with position of each mark point in test standard original image to described
The real-time original image of testboard obtains testboard realtime graphic after carrying out distortion correction, then in the testboard realtime graphic
Hand realtime graphic region is found out corresponding to the position of testboard standard picture, is then sought in hand realtime graphic region
All hand profiles are looked for, the rectangle that can just surround all hand profiles marked is the white dashed line frame in Fig. 6
126.If the pixel distance at edge 1261 and the zero line 121 that white dashed line frame 126 is located at hand profile finger tip is S,
Then physical length D=PL*S of current tester's palm stretching, extension.When pixel distance S at this time is the maximum value in each pixel distance
When, corresponding physical length D is exactly the final numerical value of this flexibility test at this time.
The optical calibrating and measurement method of flexibility test of the invention are by analyzing tester's palm in captured image
Position and pixel distance and physical length in image relationship, the automatic result value for calculating flexibility test, test
Shi Wuxu adds additional mechanical part without staff from other subtest, reduces maintenance cost and has good
Test experience.
However, not limited the scope of the invention the foregoing is merely preferable possible embodiments of the invention, therefore it is all
Change with equivalent structure made by description of the invention and accompanying drawing content, is included within the scope of protection of the present invention.
Claims (7)
1. a kind of optical calibrating and measurement method of flexibility test, which is characterized in that comprising steps of
Step S1: marking leg measured zone in test zone, and the top setting in leg measured zone one end corresponds to
The testboard of hand stretching, extension test, is arranged zero line on the testboard according to the position of lower section leg measured zone, tests
It is additionally provided at least two mark points on platform, the reflecting rate of the zero line and mark point is different from background area；
Step S2: before testing nobody when, by be located at test zone side video camera the testboard is shot, obtain
To test standard original image, testboard standard drawing is obtained after carrying out distortion correction to the test standard original image
Picture carries out algorithm process to the testboard standard picture, testboard canonical algorithm figure is obtained, according to testboard canonical algorithm
The ratio between the pixel distance and actual range between two mark points in figure obtains reality corresponding to each pixel
Border length；
Step S3: after test starts, the video camera by being located at test zone side carries out the testboard for having tester's palm
Shooting, obtains the real-time original image of testboard, obtains testboard after carrying out distortion correction to the real-time original image of the testboard
Realtime graphic；
Step S4: finding all hand profiles in the testboard realtime graphic and mark one can just surround it is all
The rectangle of hand profile, while the zero line is found out in the testboard realtime graphic, it calculates the rectangle and is located at hand
The pixel distance at the edge of profile finger tip and the zero line, reality corresponding to each pixel according to obtained in step S2
Length obtains the result data of flexibility test.
2. the optical calibrating and measurement method of flexibility test according to claim 1, which is characterized in that in the leg
Measured zone is provided at least one label lines, and for the reflecting rate of the label lines different from background area, step S2 is logical later
It crosses video camera to shoot the leg measured zone, when finding that the label lines are blocked, then discriminating test is opened
Begin, executes step S3 backward.
3. the optical calibrating and measurement method of flexibility test according to claim 1, which is characterized in that in step s3
And in step S4, video camera is continuously shot test zone with certain frame per second, and then obtains multiple modified
Rectangular edges take physical length corresponding to the maximum value in pixel distance along the pixel distance with zero line, survey as flexibility
The final numerical value of examination.
4. the optical calibrating and measurement method of flexibility test according to claim 1, which is characterized in that set on testboard
Set there are three above mark point, the position in step S2 and S3 according to each mark point in original image to original image into
Line distortion correction.
5. the optical calibrating and measurement method of flexibility test according to claim 1 or 4, which is characterized in that testboard
Nearly corner location be respectively arranged with a mark point, in step S2 according to the position of four mark points in testboard standard picture
Hand standard picture region is marked, first corresponds to the position of testboard standard picture in step S4 in the testboard realtime graphic
It sets and finds out hand realtime graphic region, all hand profiles are then found in hand realtime graphic region.
6. the optical calibrating and measurement method of flexibility test according to claim 1, which is characterized in that in step S1 also
When setting on testboard is with test, the perpendicular graduation mark of palm extending direction is to facilitate tester directly to read test value.
7. the optical calibrating and measurement method of flexibility test according to claim 1, which is characterized in that in step s 2
The algorithm process carried out includes gray scale, fuzzy and binaryzation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710521607.8A CN109211116A (en) | 2017-06-30 | 2017-06-30 | The optical calibrating and measurement method of flexibility test |
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| CN201710521607.8A CN109211116A (en) | 2017-06-30 | 2017-06-30 | The optical calibrating and measurement method of flexibility test |
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| CN2693176Y (en) * | 2004-04-16 | 2005-04-20 | 梁海春 | Tester of body procurvation in sitting posture |
| US8216160B2 (en) * | 2006-07-04 | 2012-07-10 | Alan Wayne Strang | Flexibility assessment apparatus |
| CN104537670A (en) * | 2014-12-31 | 2015-04-22 | 深圳泰山在线科技有限公司 | Flexibility testing method and system |
| CN205514616U (en) * | 2016-02-29 | 2016-08-31 | 周鑫宇 | Domestic seat body anteflexion caliber |
| CN205626890U (en) * | 2016-05-23 | 2016-10-12 | 徐钰博 | Device is tempered to anteversion on seat pliability |
| CN106454039A (en) * | 2016-10-20 | 2017-02-22 | 广东技术师范学院 | A sit-and-reach detector based on an internet of things and machine vision |
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2017
- 2017-06-30 CN CN201710521607.8A patent/CN109211116A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2693176Y (en) * | 2004-04-16 | 2005-04-20 | 梁海春 | Tester of body procurvation in sitting posture |
| US8216160B2 (en) * | 2006-07-04 | 2012-07-10 | Alan Wayne Strang | Flexibility assessment apparatus |
| CN104537670A (en) * | 2014-12-31 | 2015-04-22 | 深圳泰山在线科技有限公司 | Flexibility testing method and system |
| CN205514616U (en) * | 2016-02-29 | 2016-08-31 | 周鑫宇 | Domestic seat body anteflexion caliber |
| CN205626890U (en) * | 2016-05-23 | 2016-10-12 | 徐钰博 | Device is tempered to anteversion on seat pliability |
| CN106454039A (en) * | 2016-10-20 | 2017-02-22 | 广东技术师范学院 | A sit-and-reach detector based on an internet of things and machine vision |
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Application publication date: 20190115 |