CN113951874B - Scoliosis risk assessment system - Google Patents
Scoliosis risk assessment system Download PDFInfo
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- CN113951874B CN113951874B CN202111239013.0A CN202111239013A CN113951874B CN 113951874 B CN113951874 B CN 113951874B CN 202111239013 A CN202111239013 A CN 202111239013A CN 113951874 B CN113951874 B CN 113951874B
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- laser detector
- dimensional contour
- scoliosis
- contour line
- visual laser
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- 206010039722 scoliosis Diseases 0.000 title claims abstract description 41
- 238000012502 risk assessment Methods 0.000 title claims abstract description 13
- 230000000007 visual effect Effects 0.000 claims abstract description 28
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000011436 cob Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010058907 Spinal deformity Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1077—Measuring of profiles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1079—Measuring physical dimensions, e.g. size of the entire body or parts thereof using optical or photographic means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
A scoliosis risk assessment system relates to the technical field of computer vision, and solves the problems that in the detection process of the prior art, the measurement efficiency is low and accurate data cannot be obtained; the visual laser detector is arranged on the guide rail, the guide rail is arranged on the supporting structure, and the computer is connected with the visual laser detector and the controller; the controller controls the visual laser detector to do linear motion along the motion direction of the guide rail, the tested person bends forwards with the maximum amplitude to stand under the visual laser detector, and the visual laser detector acquires a three-dimensional contour line image of the backbone of the tested person and transmits the three-dimensional contour line image to the computer; calculating the rotation angle of the three-dimensional contour line relative to the horizontal plane to obtain a scoliosis risk value; according to the invention, a large number of human body contour lines are acquired in a short time for system analysis, so that errors existing in manual sampling data are effectively reduced; the risk assessment time is shortened.
Description
Technical Field
The invention relates to the technical field of computer vision, in particular to a scoliosis risk assessment system.
Background
Scoliosis is a three-dimensional spinal deformity suitable for adolescence involving the coronal, sagittal and horizontal planes, the pathogenesis of which is not yet defined. Scoliosis accounts for about 2% -3% of the population, and especially during the period of vigorous growth and development of 10-12 years old, scoliosis deformity develops faster, so that the labor capacity is reduced, and the social and psychological problems are caused.
At present, methods such as X-ray photography and a spine measuring ruler are commonly used in China for screening scoliosis, wherein the X-ray photography can clearly see the change of spine bone, and Cobb angle (Cobb angle is one of reference standards of severity of scoliosis) is accurately measured, but batch screening of large-scale crowds cannot be achieved.
The spine measuring ruler is the most simple and convenient spine lateral bending screening tool at present, the reading on the spine measuring ruler can intuitively display the lateral bending degree of a human body, a doctor only needs to carry the spine measuring ruler to school to carry out teenager lateral bending screening, but the technology also has a plurality of defects, firstly, subjective phenomena, uneven level and the like exist in manual screening, inaccurate results are caused, secondly, professional medical staff is required to personally operate, the labor cost is greatly increased, and according to the proportion of medical staff in the population of China, enough medical staff cannot be pumped out at present to carry out comprehensive screening work.
The problems seriously restrict the comprehensive development of scoliosis assessment work, and an automatic, harmless, rapid and accurate scoliosis examination instrument is urgently needed in the medical field.
Disclosure of Invention
The invention provides a scoliosis risk assessment system for solving the problems that the existing artificial operation technology is low in efficiency and accurate data cannot be obtained.
A scoliosis risk assessment system, which comprises a visual laser detector, a guide rail, a supporting structure, a controller and a computer;
the visual laser detector is arranged on the guide rail, the guide rail is arranged on the supporting structure, and the computer is connected with the visual laser detector and the controller;
the controller controls the visual laser detector to do linear motion along the motion direction of the guide rail, a tested person bends forward with the maximum amplitude to stand right below the visual laser detector, and the visual laser detector acquires a three-dimensional contour line image of the backbone of the tested person and transmits the three-dimensional contour line image to the computer;
the computer calculates the rotation angle of the three-dimensional contour line relative to the horizontal plane to obtain a scoliosis risk value; the specific process is as follows:
firstly, according to the symmetry and gradient change of the three-dimensional contour lines, each three-dimensional contour line is intercepted respectively, and effective contour lines positioned on two sides of a spine are obtained;
then, performing space straight line fitting on each effective contour line, and calculating an included angle between the fitted space straight line and the horizontal plane, wherein the included angle is the rotation angle of each three-dimensional contour line relative to the horizontal plane;
finally, calculating a scoliosis risk value by adopting the following method according to the obtained rotation angle;
wherein V is a scoliosis risk value, N is the number of three-dimensional contour lines, A i For the rotation angle calculated from the ith three-dimensional contour line, f (·) is a weight value of the rotation angle, p is a factor affecting the weight value, and k is the number of factors affecting the weight value.
The invention has the beneficial effects that: according to the invention, an automatic three-dimensional laser scanning system is adopted to replace the existing manual operation, so that a large number of human body contour lines can be acquired in a short time for system analysis, and errors existing in manual sampling data are effectively reduced; the system can automatically complete all data acquisition and analysis works within a few seconds, so that the risk assessment time is greatly shortened; the invention adopts automatic equipment, can be used by people with medical knowledge or not, and can also be used under the condition that medical staff lacks, thereby obviously reducing the use requirement and difficulty.
Drawings
FIG. 1 is a schematic diagram of a scoliosis risk assessment system according to the present invention;
fig. 2 is a schematic view of a three-dimensional contour of the spine, a line generated by spatial line fitting, and a horizontal plane.
In the figure: 1. the device comprises a tested person 2, a vision laser detector 3, a guide rail 4, a supporting structure 5, a controller 6, a computer 7, a three-dimensional contour line 8, a straight line formed by space straight line fitting, and a horizontal plane 9.
Detailed Description
The present embodiment is described with reference to fig. 1 and fig. 2, and the scoliosis risk assessment system includes a visual laser detector 2, a guide rail 3, a support structure 4, a controller 5 and a computer 6, where the visual laser detector 2 is composed of a camera and a laser capable of emitting a linear laser line, the visual laser detector is installed on the guide rail 3, the guide rail 3 can make the visual laser detector 2 move along a straight line, the guide rail 3 is installed on the support structure 4, the controller 5 is used for controlling operations such as starting, stopping and resetting of the guide rail 3, and the computer 6 is connected with the controller 5 and the visual laser detector 2 and is used for controlling the visual laser detector 2 and the controller 5, and processing feedback data of the visual laser detector 2 and the controller 5 to obtain a three-dimensional contour line of a back of a human body.
The vision laser detector 2, the guide rail 3 and the supporting structure 4 all have a mechanical adjustment function, so that the guide rail 3 can enable the vision laser detector 2 to do linear motion in a horizontal plane, the vision laser detector 2 projects a linear laser line from top to bottom, the plane of the linear laser line is perpendicular to the horizontal plane 9, and the motion direction of the vision laser detector 2 is perpendicular to the plane of the linear laser line.
Before the system is started, the tested person 1 stands under the vision laser detector 2 in a forward bending mode with the maximum amplitude (the angle range is 85-105 degrees), the spine direction of the tested person 1 is kept parallel to the movement direction of the vision laser detector 2 as much as possible, the vision laser detector 2 and the guide rail 3 are synchronously started, the vision laser detector 2 moves, and in the movement process, the vision laser detector 2 continuously acquires the three-dimensional contour line of the back of a human body at fixed distance intervals according to the triangulation principle.
In this embodiment, since the linear laser line is projected onto the back of the tested person 1 from top to bottom in the direction perpendicular to the horizontal plane, and the movement direction of the vision laser detector 2 is perpendicular to the plane of the linear laser line, the spine direction of the tested person 1 is parallel to the movement direction of the vision laser detector 2, and thus each spine three-dimensional contour line is a cross-sectional contour line of the back of the tested person 1 perpendicular to the spine direction.
The computer 6 calculates the rotation angle of each human back three-dimensional contour line relative to the horizontal plane;
firstly, according to the symmetry and gradient change trend of three-dimensional contour lines of the back of a human body, each three-dimensional contour line is intercepted to obtain effective contour lines positioned on two sides of a spine, then, each effective contour line is subjected to space straight line fitting, and an included angle between the fitted space straight line and a horizontal plane is calculated, wherein the included angle is the rotation angle of each three-dimensional contour line relative to the horizontal plane.
In fig. 2, the three-dimensional contour line 7 of the spine is fitted with a spatial straight line to generate a straight line 8, and the included angle between the straight line and the horizontal plane 9 is the rotation angle of the three-dimensional contour line. The calculation formula of the scoliosis risk value is as follows:
wherein V is a scoliosis risk value, N is the number of three-dimensional contour lines of the back of the human body, A i The rotation angle f (·) is a weight value of the rotation angle, the weight value is affected by a plurality of factors such as an acquisition part, p is a factor affecting the weight value, and k is the number of factors affecting the weight value.
The weight value f (·) is a function of an influencing factor, the influencing factor includes a rotation angle acquisition part, an overall change trend and the like, and a related technician can construct different weight value functions according to actual situations, if any special factor is not considered, the weight values of all rotation angles are equal, and the scoliosis risk value is an average value of all rotation angles according to the formula.
In this embodiment, the method further includes defining a scoliosis risk area, and performing risk assessment on scoliosis.
Setting a plurality of scoliosis risk thresholds as boundaries of a scoliosis risk area, namely: setting upTwo threshold values T 1 And T 2 Wherein T is 1 <T 2 When the scoliosis risk value of the tested person is smaller than the threshold value T 1 Then in the low risk area;
when the scoliosis risk value is at T 1 And T 2 When the position is in the risk area;
when the scoliosis risk value is greater than the threshold value T 2 And is in a high risk area.
When the scoliosis risk value of the tested person is in a low risk area, early warning is not needed; when the scoliosis risk value of the tested person is in the medium risk zone, the tested person 1 needs to be tracked and monitored; when the scoliosis risk value of the tested person is in a high risk area, the scoliosis of the tested person is serious.
Claims (2)
1. A scoliosis risk assessment system, characterized by: the system comprises a vision laser detector (2), a guide rail (3), a supporting structure (4), a controller (5) and a computer (6);
the visual laser detector (2) is arranged on the guide rail (3), the guide rail (3) is arranged on the supporting structure (4), and the computer (6) is connected with the visual laser detector (2) and the controller (5);
the controller (5) controls the visual laser detector (2) to do linear motion along the motion direction of the guide rail (3), a tested person bends forward with the maximum amplitude to stand right below the visual laser detector (2), and the visual laser detector (2) acquires a three-dimensional contour line image of the backbone of the tested person and transmits the three-dimensional contour line image to the computer (6);
the computer (6) calculates the rotation angle of the three-dimensional contour line relative to the horizontal plane to obtain a scoliosis risk value; the specific process is as follows:
firstly, according to the symmetry and gradient change of the three-dimensional contour lines, each three-dimensional contour line is intercepted respectively, and effective contour lines positioned on two sides of a spine are obtained;
then, performing space straight line fitting on each effective contour line, and calculating an included angle between the fitted space straight line and the horizontal plane, wherein the included angle is the rotation angle of each three-dimensional contour line relative to the horizontal plane;
finally, calculating a scoliosis risk value by adopting the following method according to the obtained rotation angle;
wherein V is a scoliosis risk value, N is the number of three-dimensional contour lines, A i For the rotation angle calculated by the ith three-dimensional contour line, f (·) is the weight value of the rotation angle, p is the factor influencing the weight value, and k is the number of factors influencing the weight value;
in the process of acquiring the three-dimensional contour line, the visual laser detector (2) is required to keep parallel to the moving direction of the visual laser detector, and the visual laser detector (2) continuously acquires the three-dimensional contour line of the spine at fixed distance intervals;
the visual laser detector (2) emits a linear laser line from top to bottom, the plane of the laser line is perpendicular to the horizontal plane, and the moving direction of the visual laser detector (2) is perpendicular to the plane of the linear laser line.
2. A scoliosis risk assessment system according to claim 1, characterized in that: the method further comprises the steps of dividing the obtained risk values and determining a low risk area, a medium risk area and a high risk area;
setting two threshold values T 1 And T 2 Wherein T is 1 <T 2 When the scoliosis risk value of the tested person is smaller than the threshold value T 1 Then in the low risk area;
when the scoliosis risk value is at T 1 And T 2 When the position is in the risk area;
when the scoliosis risk value is greater than the threshold value T 2 And is in a high risk area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111239013.0A CN113951874B (en) | 2021-10-25 | 2021-10-25 | Scoliosis risk assessment system |
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| CN202111239013.0A CN113951874B (en) | 2021-10-25 | 2021-10-25 | Scoliosis risk assessment system |
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| CN113951874A CN113951874A (en) | 2022-01-21 |
| CN113951874B true CN113951874B (en) | 2023-12-26 |
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| CN114557681B (en) * | 2022-04-27 | 2023-01-10 | 深圳市中医院 | Device and method for detecting scoliosis |
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