CN110349154A - A kind of pressure sore wound measurement methods and device based on machine vision - Google Patents
A kind of pressure sore wound measurement methods and device based on machine vision Download PDFInfo
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- CN110349154A CN110349154A CN201910681876.XA CN201910681876A CN110349154A CN 110349154 A CN110349154 A CN 110349154A CN 201910681876 A CN201910681876 A CN 201910681876A CN 110349154 A CN110349154 A CN 110349154A
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- pressure sore
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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
- A61B5/1072—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring distances on the body, e.g. measuring length, height or thickness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30088—Skin; Dermal
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Abstract
The invention discloses a kind of pressure sore wound measurement methods and device based on machine vision, this method comprises the following steps: acquisition pressure sore wound image；Image segmentation is carried out to collected pressure sore image；Pressure sore color after image segmentation is identified；Image after identifying to color carries out pressure sore dimensional measurement.Doctor's openable mobile phone when using realizes the contactless assessment to patient's pressure sore wound by the unitary coin for being placed on side as reference substance.This method precision is high, contactless to the wound of patient, easy to use, learning cost is low, convenient for popularization and use.
Description
Technical field
The present invention relates to a kind of pressure sore wound assessment method, especially a kind of pressure sore wound measurement side based on machine vision
Method and device.
Background technique
Pressure sore since local organization is pressurized for a long time, occur continuous ischemia, anoxic, malnutrition and cause tissue fester downright bad.
Clinically, doctor is the basic document for obtaining wound, formulates treatment and nursing care plan, needs to assess the pressure sore of patient.
Existing appraisal procedure is to observe the color of wound and measure wound size with ruler to be assessed, the disadvantage is that easily causing sense mostly
Dye, while measuring that there are certain subjectivity and ambiguities.
Summary of the invention
The existing pressure sore wound assessment method in above-mentioned background technique there are aiming at the problem that, the present invention provides a kind of bases
In the pressure sore wound measurement methods and device of machine vision, this method precision is high, user contactless to the wound of patient
Just, learning cost is low, is convenient for promoting the use of.
Specific technical solution of the present invention is: a kind of pressure sore wound measurement methods based on machine vision, the party
Method includes the following steps:
Acquire pressure sore wound image；
Image segmentation is carried out to collected pressure sore image；
Pressure sore color after image segmentation is identified；
Image after identifying to color carries out pressure sore dimensional measurement.
Further, described image segmentation uses Level Set Method.
Further, the pressure sore color, which is identified using the intensity value in hsv color space, identifies wound.
Further, standard reference material is used in pressure sore dimensional measurement, when use is placed on pressure sore wound same plane
On any position.
Further, standard reference material selects unitary coin.
Further, pressure sore dimensional measurement is specific as follows: the 3D coordinate for obtaining referential matter for camera is resolved using PNP
Information to extrapolate the 3D coordinate information of pressure sore wound after segmentation, and then obtains measurement result.
Further, pressure sore dimensional measurement is specific as follows: obtaining one using Hough loop truss and edge detection in the picture
The 2D information of the upper mark point of first coin, and the practical relative position between mark point is known, and then can pass through PNP algorithm
Referential matter is solved for the 3D coordinate of camera coordinates system.Since reference substance and pressure sore wound are in the same plane, therefore easily
Know the 3D information of pressure sore profile.
It is a further object of the present invention to provide a kind of pressure sore wound measurement devices based on machine vision, comprising:
Acquisition module, for acquiring pressure sore wound image；
Divide module, for carrying out image segmentation to collected pressure sore image；
Color identification module, for identifying to the pressure sore color after image segmentation；
Measurement module carries out pressure sore dimensional measurement for the image after identifying to color.
Further, the image that the acquisition module uses monocular vision to obtain.
Further, the acquisition module is mobile phone camera.
Compared with the existing technology, beneficial effects of the present invention are as follows: using eye observation manually compared to traditional doctor, use ruler
Measurement, noncontacting measurement can be carried out method of the invention to patient and precision is high, easy to use, learning cost is low, convenient for pushing away
It is wide to use.
Detailed description of the invention
Fig. 1 is method frame schematic diagram of the invention；
Fig. 2 is the evolutionary process of envelope curve in segmentation module of the invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
As shown in Figure 1, the application provides a kind of pressure sore wound measurement methods based on machine vision, this method includes as follows
Step:
S001, acquisition pressure sore wound image；The image of monocular vision acquisition can be used in acquisition pressure sore wound image, can also
Use mobile phone camera.
S002, image segmentation is carried out to collected pressure sore image；Described image segmentation uses Level Set Method, and Fig. 2 is
One example, from up to down in the evolutionary process of the driving lower enveloping curve of gradient, four figures respectively indicate original state in figure
Envelope ((a) in Fig. 2), the envelope ((b) in Fig. 2) that the number of iterations is 80 times, the envelope that the number of iterations is 135
The final envelope ((d) in Fig. 2) that ((c) in Fig. 2), the number of iterations are 310 times.
S003, the pressure sore color after image segmentation is identified；The pressure sore color identify empty using hsv color
Between intensity value identify wound, for pressure sore wound under hsv color space, H is red, V is illuminated by the light intensity effect and becomes
Change, the depth that only saturation value S is able to reflect color, the i.e. severity of wound.
S004, pressure sore dimensional measurement is carried out to the image after color identification.Canonical reference is used in pressure sore dimensional measurement
Object, when use, are placed on any position on pressure sore wound same plane.Standard reference material can select unitary coin.It uses
PNP resolves the 3D coordinate information for obtaining referential matter for camera, so that the 3D coordinate information of pressure sore wound after segmentation is extrapolated,
And then obtain measurement result.Specific method is to obtain the subscript of unitary coin using Hough loop truss and edge detection in the picture
Remember the 2D information of point, and the practical relative position between mark point is known, and then can solve reference substance by PNP algorithm
3D coordinate relative to camera coordinates system.Since reference substance and pressure sore wound are in the same plane, therefore it is apparent from pressure sore profile
3D information.
It is corresponding with a kind of aforementioned embodiment of pressure sore wound measurement methods based on machine vision, present invention also provides
A kind of embodiment of the pressure sore wound measurement devices based on machine vision.
A kind of embodiment of the pressure sore wound measurement devices based on machine vision of the present patent application can be applied in intelligent hand
On machine.Specific implementation can also be realized by software realization by way of hardware or software and hardware combining.With software reality
For existing, as the device on a logical meaning, being will be right in nonvolatile memory by the processor of its interior of mobile phone
The computer program instructions answered are read into memory what operation was formed, are specifically exactly APP workable for a mobile phone.From hard
For part level, other than processor, memory, interface, camera, screen and nonvolatile memory, filled in embodiment
Processor where setting can also include other hardware, repeat no more to this generally according to its actual functional capability.
The application provides a kind of pressure sore wound measurement devices based on machine vision, comprising:
Acquisition module, for acquiring pressure sore wound image；
Divide module, for carrying out image segmentation to collected pressure sore image；
Color identification module, for identifying to the pressure sore color after image segmentation；
Measurement module carries out pressure sore dimensional measurement for the image after identifying to color；
It can also include human-computer interaction module, manipulation and display when being used for user.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of pressure sore wound measurement methods based on machine vision, which is characterized in that this method comprises the following steps:
Acquire pressure sore wound image；
Image segmentation is carried out to collected pressure sore image；
Pressure sore color after image segmentation is identified.
Image after identifying to color carries out pressure sore dimensional measurement.
2. a kind of pressure sore wound measurement methods based on machine vision as described in claim 1, which is characterized in that described image
Segmentation uses Level Set Method.
3. a kind of pressure sore wound measurement methods based on machine vision as claimed in claim 2, which is characterized in that the pressure sore
Color, which is identified using the intensity value in hsv color space, identifies wound.
4. a kind of pressure sore wound measurement methods based on machine vision as claimed in claim 3, which is characterized in that in pressure sore ruler
Standard reference material is used when very little measurement, when use is placed on any position on pressure sore wound same plane.
5. a kind of pressure sore wound measurement methods based on machine vision as claimed in claim 4, which is characterized in that canonical reference
Object selects unitary coin.
6. a kind of pressure sore wound measurement methods based on machine vision as claimed in claim 5, which is characterized in that pressure sore size
It measures specific as follows: resolving the 3D coordinate information for obtaining referential matter for camera using PNP, to extrapolate pressure sore after segmentation
The 3D coordinate information of wound, and then obtain measurement result.
7. a kind of pressure sore wound measurement methods based on machine vision as claimed in claim 5, which is characterized in that pressure sore size
It measures specific as follows: obtaining the 2D information of the upper mark point of unitary coin using Hough loop truss and edge detection in the picture,
And the practical relative position between mark point is known, and then can solve referential matter by PNP algorithm and camera is sat
Mark the 3D coordinate of system.Since reference substance and pressure sore wound are in the same plane, therefore it is apparent from the 3D information of pressure sore profile.
8. a kind of pressure sore wound measurement devices based on machine vision characterized by comprising
Acquisition module, for acquiring pressure sore wound image；
Divide module, for carrying out image segmentation to collected pressure sore image；
Color identification module, for identifying to the pressure sore color after image segmentation；
Measurement module carries out pressure sore dimensional measurement for the image after identifying to color.
9. a kind of pressure sore wound measurement devices based on machine vision as claimed in claim 8, which is characterized in that the acquisition
The image that module uses monocular vision to obtain.
10. a kind of pressure sore wound measurement devices based on machine vision as claimed in claim 8, which is characterized in that described to adopt
Integrate module as mobile phone camera.
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| CN201910681876.XA CN110349154A (en) | 2019-07-26 | 2019-07-26 | A kind of pressure sore wound measurement methods and device based on machine vision |
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| CN201910681876.XA CN110349154A (en) | 2019-07-26 | 2019-07-26 | A kind of pressure sore wound measurement methods and device based on machine vision |
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Cited By (4)
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|---|---|---|---|---|
| CN111297363A (en) * | 2020-01-20 | 2020-06-19 | 浙江同花顺智能科技有限公司 | Wound measuring system and wound measuring method |
| CN111862118A (en) * | 2020-07-20 | 2020-10-30 | 四川大学 | Pressure sore staging training method, staging method and staging system |
| CN112370044A (en) * | 2020-09-16 | 2021-02-19 | 湘南学院附属医院 | Pressure sore wound measuring method and device based on machine vision |
| CN113303787A (en) * | 2021-03-12 | 2021-08-27 | 复旦大学附属中山医院 | Pressure sore wound detection and calculation system based on infrared imaging technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297363A (en) * | 2020-01-20 | 2020-06-19 | 浙江同花顺智能科技有限公司 | Wound measuring system and wound measuring method |
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| CN113303787A (en) * | 2021-03-12 | 2021-08-27 | 复旦大学附属中山医院 | Pressure sore wound detection and calculation system based on infrared imaging technology |
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