CN105125175B - A kind of vein developing method and vein imaging system - Google Patents
A kind of vein developing method and vein imaging system Download PDFInfo
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- CN105125175B CN105125175B CN201510606622.3A CN201510606622A CN105125175B CN 105125175 B CN105125175 B CN 105125175B CN 201510606622 A CN201510606622 A CN 201510606622A CN 105125175 B CN105125175 B CN 105125175B
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Abstract
The invention discloses a kind of vein developing methods and vein imaging system, method to include：Infrared light is irradiated to target object；The infrared image of the target object is acquired by infrared eye, wherein the infrared image presents the picture of the vein of the target object；By projection arrangement by can light see in the form of to the target object project the infrared image, wherein the projection of the infrared image coincides with target object, on the position where the image projection to the vein of the target object of the vein of the target object.By the above-mentioned means, the present invention can be where the vein in target object position show the picture of vein, the vein of easy-to-look-up target object.
Description
Technical field
The present invention relates to field of medical device, more particularly to a kind of vein developing method and vein imaging system.
Background technology
In modern medicine, the method that is usually injected intravenously treats the disease of patient, since intravenous injection is directly will
Liquid medicine is injected directly into the blood of patient, can be improved the recovery efficiency of patient, be shortened the recovery time of patient.
But before being injected intravenously, needs to carry out venipuncture to patient, the vein of patient is inserted into injection head
In.And traditional vein identification method relies primarily on naked eyes and the experience of medical staff to identify, in the vein spy of skin surface
Levy it is unconspicuous in the case of be difficult to realize, it is even more impossible to accomplish the accurate reliable differentiation of deep vein, be easy to cause puncture lose
It loses rate to remain high always, needs medical staff to carry out multiple venipuncture to patient, increase the pain of patient.It is provided according to statistics
Material shows：The rate of puncture failure for the first time of average adult's intravenous injection is 28%；The rate of puncture failure for the first time of children intravenous injection is
44%；It needs to attempt to puncture 3 above ratios that could be injected intravenously in children to be 43%；When intravenous injection, " leakage occurs
The ratio of needle " phenomenon is 23-28%；It is 12% that the ratio to fall flat is punctured in cancer patient.
Therefore, it is necessary to a kind of system for capableing of medical assistance people finder patient's vein occur.
Invention content
The invention mainly solves the technical problem of providing a kind of vein developing method and vein imaging system, Neng Gou
Position where the vein of target object shows the picture of vein, the vein of easy-to-look-up target object.
In order to solve the above technical problems, one aspect of the present invention is：A kind of vein developing method is provided, is wrapped
It includes：Infrared light is irradiated to target object；The infrared image of the target object is acquired by infrared eye, wherein described
Infrared image presents the picture of the vein of the target object；By projection arrangement by can light see in the form of to the target pair
As projecting the infrared image, wherein the projection of the infrared image coincides with target object, the vein of the target object
Image projection to the vein of the target object where position on.
Wherein, after the infrared image of the acquisition target object the step of, the method further includes：Enhancing institute
The contrast of infrared image is stated, initial enhancing image is generated；Identify the target pair shown in the initial enhancing image
The picture of the vein of elephant；The picture of the vein of the target object is carried out to highlight processing, generates final enhancing image；It is described logical
Cross projection arrangement by can light see in the form of to the target object project the infrared image, and make the projection of the infrared image
It coincides with target object, so that the vein of the target object presented in the infrared image is presented on the target pair
Step on the position of the vein of elephant, specifically：By projection arrangement by can light see in the form of to the target object projection described in
Final enhancing image, and the projection of the final enhancing image is made to coincide with target object, so that the final enhancing image
In the vein of the shown target object be presented on the position where the vein of the target object.
Wherein, the step of contrast of the infrared image of the enhancing target object, including:By the infrared image
Each pixel gray value map to 0~1 interval range, generate the first intermediate image；By first intermediate image
Low-pass filtering is carried out, so that first intermediate image is blurred, generates the second intermediate image；By first intermediate image with
The gray value of each corresponding pixel points of second intermediate image is subtracted each other, and third intermediate image is generated；Take the third middle graph
The absolute value of the gray value of each pixel as in, generates the 4th intermediate image；By second intermediate image and the 4th middle graph
The gray value of each corresponding pixel is multiplied as in, generates the 5th intermediate image；By each of the 5th intermediate image
The gray value of pixel maps to 0~255 interval range, generates initial enhancing image.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of vein imaging system is provided,
Including infrared light supply, infrared eye and projection arrangement；The infrared light supply is for emitting infrared light, wherein described infrared
Light source coverage goal object；Infrared eye is used to acquire the infrared image of the target object, wherein the infrared image
Present the vein picture of the target object；Projection arrangement, for projecting institute to the target object in the form of visible light
State infrared image, wherein the projection of the infrared image coincides with the target object, is presented in the infrared image
On position where the image projection of the vein of the target object to the vein of the target object.
Wherein, the step of processor is used to enhance the contrast of the infrared image, and generation initially enhances image has
Body is：The gray value of each pixel of the infrared image is mapped to 0~1 interval range, generates the first intermediate image；
First intermediate image is subjected to low-pass filtering, so that first intermediate image is blurred, generates the second intermediate image；It will
First intermediate image and the gray value of each corresponding pixel points of the second intermediate image are subtracted each other, and third middle graph is generated
Picture；The absolute value of the gray value of each pixel in the third intermediate image is taken, the 4th intermediate image is generated；It will be in described second
Between in image and the 4th intermediate image the gray value of each corresponding pixel be multiplied, generate the 5th intermediate image；It will be described
The gray value of each pixel of 5th intermediate image maps to 0~255 interval range, generates the initial enhancing image.
Wherein, the vein imaging system further includes heat mirror；The reflecting surface of the heat mirror and the infrared eye phase
It is corresponding, for reflecting the infrared light that the target object is reflected, transparent transmission face and the projection of the heat mirror to infrared eye
Device is corresponding, the visible light sent out for projection arrangement described in transparent transmission.
Wherein, the vein imaging system further includes optical filter；The optical filter is set to the infrared eye
On viewing lens.
Wherein, the optical filter is used to filter the light other than 840 nanometers~860 nano wave lengths.
Wherein, the wavelength for the infrared light that the infrared light supply is emitted is 850 nanometers.
The beneficial effects of the invention are as follows：The case where being different from the prior art acquires target pair in embodiments of the present invention
The infrared image of elephant, wherein infrared image presents the picture of the vein of target object, by projection arrangement with the shape of visible light
Formula projects infrared image to target object, and the projection of infrared image coincides with target object, so that the vein of target object
Image projection to the vein of target object where position on, the position where being equivalent to the vein in target object shows quiet
The picture of arteries and veins, user can be visually observed that the vein position of target object, the vein of easy-to-look-up target object.
Description of the drawings
Fig. 1 is the flow chart of vein developing method embodiment of the present invention；
Fig. 2 is the flow chart that vein developing method embodiment of the present invention carries out infrared image enhancing processing；
Fig. 3 is the flow chart for the contrast that vein developing method embodiment of the present invention specifically enhances infrared image；
Fig. 4 is the schematic diagram of vein imaging system embodiment of the present invention.
Specific implementation mode
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, vein developing method includes：
Step S201：Infrared light is irradiated to target object；
When target object is located at through under outer light, the different biological tissues of target object can absorb infrared light, and absorb
It is reflected away again after complete infrared light, and the different biological tissues of target object differ not the spectral absorption characteristics of infrared light
Together, the amount of the reflected away infrared light of different biological tissues of target object is also different, and therefore, target object is reflected
Feux rouges light include target object each biological tissue information.
Step S202：The infrared image of target object is acquired by infrared eye, wherein infrared image presents mesh
Mark the picture of the vein of object；
It, can be by acquiring target since the amount of the reflected away infrared light of different biological tissues of target object is different
The infrared light that each biological tissue of object is reflected, constructs the infrared image of target object.By each institute of biological tissue
The amount of the infrared light of reflection differs, therefore only different brightness is presented in each group of target object in infrared image, leads to
Different biological tissues can be distinguished by crossing brightness and shape.
Step S203：By projection arrangement by can light see in the form of to target object project infrared image, wherein infrared figure
The projection of picture coincides with target object, the position where the image projection to the vein of target object of the vein of target object
On；
Infrared light loses for a user, it is seen that light is visible for a user, and projection arrangement passes through in mesh
It marks on object with the form flash infrared image of visible light, then user can be visually seen infrared image, and the throwing of infrared image
Shadow coincides with target object, then the vein of the target object presented in infrared image is projected to where the vein of target object
Position on, show the same just as the entity vein of target object, user can be visually observed that vein position,
User is facilitated to search the vein of target object.
The biological tissue of usual target object is very more, cause the quantity of the line presented in infrared image very greatly and
Bar line it is bright very close, facilitate user to distinguish different biological tissues.It needs to carry out enhancing processing to infrared image, then exists
After the step of acquiring the infrared image of target object, as shown in Fig. 2, method further includes：
Step S204：Enhance the contrast of infrared image, generates initial enhancing image；
User is facilitated to distinguish different biological tissues by enhancing contrast.Wherein, enhance the contrast of infrared image
Method and a variety of, the preferable processing method of one of which of illustrating below, as shown in figure 3, then step S204 includes：
Step S2041：The gray value of each pixel of infrared image is mapped to 0~1 interval range, generates first
Intermediate image；
It should be noted that：The standard of the output signal of infrared eye includes analog system and digital system, for
The infrared photography of analog system fills the form output infrared image of its analog signal, and therefore, it is necessary to analog signal is converted to number
Word signal enters back into step S2041 processing so that the infrared image of simulation is converted to the infrared image of number.It is right
In digital system infrared eye its directly export the infrared image of number, therefore need not be converted.
Step S2042：First intermediate image is subjected to low-pass filtering, so that the first intermediate image is blurred, generates second
Intermediate image；
The mode of low-pass filtering includes gaussian filtering and mean filter.
Step S2043：First intermediate image and the gray value of each corresponding pixel points of the second intermediate image are subtracted each other,
Generate third intermediate image；
Step S2044：The absolute value of the gray value of each pixel in third intermediate image is taken, the 4th intermediate image is generated；
Step S2045：The gray value of each corresponding pixel in second intermediate image and the 4th intermediate image is subjected to phase
Multiply, generates the 5th intermediate image；
Step S2046：The gray value of each pixel of 5th intermediate image is mapped into 0~255 interval range, is generated
Initial enhancing image.
It is worth noting that：Above-mentioned first to the 5th intermediate image, usually will be in storage as default storage when generating
Space is extracted when subsequently needing to use directly from corresponding memory space.
Step S205：The picture of the vein of shown target object in the initial enhancing image of identification, and to target object
The picture of vein highlight processing, generate final enhancing image；
Due to different biological tissues its reflection infrared light be it is different, can be known according to the infrared light of reflection
Do not go out which light comes from vein, and record its position in infrared image, carries out highlighting processing in infrared image.Or
Infrared image is being generated, vein is gone out by brightness in infrared image and shape recognition, and to vein that infrared image is shown
It carries out highlighting processing.It includes keeping vein displaying bright or to vein full-filling color etc. to highlight processing.
Step S203 again be specially：By projection arrangement by can light see in the form of to target object project final enhancing figure
Picture, and the projection for finally enhancing image is made to coincide with target object, so that finally target object shown in enhancing image
Vein be presented on the position where the vein of the target object；
In embodiments of the present invention, the infrared image of target object is acquired, wherein infrared image presents target object
Vein picture, infrared image, and the throwing of infrared image are projected to target object in the form of visible light by projection arrangement
Shadow coincides with target object, so that on the position where the image projection to the vein of target object of the vein of target object,
Position where being equivalent to the vein in target object shows that the picture of vein, user can be visually observed that target object
Vein position, the vein of easy-to-look-up target object.
The present invention provides vein imaging system embodiment again.Referring to Fig. 4, vein imaging system 40 includes infrared light supply
41, infrared eye 42 and projection arrangement 43.
Infrared light supply 41 is for emitting infrared light, wherein 41 coverage goal pair of infrared light supply that infrared light supply 41 is emitted
As 50.Wherein, infrared light can preferably penetrate the biological tissues such as epidermis and the corium of target object 50, and in the blood in vein
Hemoglobin is different from surrounding biological tissue, and its absorption infrared light of different biological tissues to the spectral absorption characteristics of infrared light
Spectral absorption characteristics be also different, therefore, target object 50 includes vein letter absorbing the infrared light that reflects away again
Breath.
Infrared eye 42 is used to acquire the infrared image of target object 50, wherein infrared image presents target pair
As 50 vein picture.Since the spectral absorption characteristics that each biological tissue of target object 50 absorbs infrared light differ, then
Infrared image also presents the other biological tissue of target object 50 other than the vein picture for presenting target object 50
Picture.Projection arrangement 43 is used to project infrared image to target object 50 in the form of visible light, wherein the projection of infrared image
It coincides with target object 50, the vein image projection of the target object 50 presented in infrared image to the target object 50
Vein where position on.It is equivalent to and the entity vein of target object 50 is shown that equally user can intuitively see
Observe vein position, the vein of easy-to-look-up target object 50.
The vein of target object 50, vein imaging are found from 42 collected infrared image of infrared eye for convenience
System 40 further includes processor 44.
Processor 44 enhances the comparison of infrared image for obtaining 42 collected infrared images of infrared eye
Degree generates initial enhancing image, the picture of the vein of the target object 50 presented in initial enhancing image is identified, to target pair
As the picture of 50 vein highlight processing, final enhancing image is generated, and final enhancing figure is sent to projection arrangement 43
Picture.Projection arrangement 43 is specifically used for projecting the final enhancing image to target object 50 in the form of visible light, wherein infrared
The projection of image coincides with target object 50, and the vein image projection of the target object 50 presented in infrared image is extremely
On position where the vein of the target object 50.
Specifically, the step of processor 44 enhances the contrast of infrared image, and generation initially enhances image is：By infrared figure
The gray value of each pixel of picture maps to 0~1 interval range, generates the first intermediate image；By the first intermediate image into
Row low-pass filtering generates the second intermediate image so that the first intermediate image is blurred；By the first intermediate image and the second middle graph
The gray value of each corresponding pixel points of picture is subtracted each other, and third intermediate image is generated；Take each pixel in third intermediate image
The absolute value of gray value generates the 4th intermediate image；By each corresponding pixel in the second intermediate image and the 4th intermediate image
Gray value be multiplied, generate the 5th intermediate image；The gray value of each pixel of 5th intermediate image is converted into 0~
255 interval ranges generate initial enhancing image.
Vein imaging system 40 further includes heat mirror 45 and optical filter 46.
The reflecting surface of heat mirror 45 is corresponding with infrared eye 42, is used for 42 reflectance target object of infrared eye
The transparent transmission face of 50 infrared lights reflected, heat mirror 45 is corresponding with projection arrangement 43, is sent out for transparent transmission projection arrangement 43
Visible light.Wherein, the infrared light that the visible light after transparent transmission is reflected along target object 50 is transmitted to the optic path of heat mirror 45, from
And realize that infrared image is projected to target object 50, and infrared image is made to be overlapped with target object 50.Heat mirror 45 and target object
The angle that 50 infrared lights reflected are transmitted between the light path of heat mirror 45 is 45 degree.
Optical filter 46 is set on the viewing lens of infrared eye 42, wherein optical filter 46 is for filtering 840 nanometers
Light other than~860 nano wave lengths, to reduce other ambient lights other than the infrared light that target object 50 is reflected
Line enters infrared eye 42, reduces influence of the ambient light to infrared image.
It is worth noting that：Infrared eye 42, processor 44 and projection arrangement 43 can be handled in real time, work as mesh
When marking the movement of object 50, it still can ensure the position where vein image projection to the vein of target object 50, avoid vein
Image projection is to otherwise.
In embodiments of the present invention, the infrared image of target object is acquired, wherein infrared image presents target object
Vein picture, infrared image is projected to target object in the form of visible light by projection arrangement 43, and infrared image
Projection coincides with target object, so that the position where the image projection to the vein of target object of the vein of target object
On, the position where being equivalent to the vein in target object shows that the picture of vein, user can be visually observed that target pair
The vein position of elephant, the vein of easy-to-look-up target object.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (5)
1. a kind of vein developing method, which is characterized in that including：
Infrared light is irradiated to target object；
The infrared image of the target object is acquired by infrared eye, wherein the infrared image presents the mesh
Mark the picture of the vein of object；
After the infrared image of the acquisition target object the step of, the method further includes：
The gray value of each pixel of the infrared image is mapped to 0~1 interval range, generates the first intermediate image；
First intermediate image is subjected to low-pass filtering, so that first intermediate image is blurred, generates the second middle graph
Picture；
First intermediate image and the gray value of each corresponding pixel points of the second intermediate image are subtracted each other, generated in third
Between image；
The absolute value of the gray value of each pixel in the third intermediate image is taken, the 4th intermediate image is generated；
The gray value of each corresponding pixel in second intermediate image and the 4th intermediate image is multiplied, generates the 5th
Intermediate image；
The gray value of each pixel of 5th intermediate image is mapped into 0~255 interval range, generates initial enhancing figure
Picture；
Identify the picture of the vein of the shown target object in the initial enhancing image；
The picture of the vein of the target object is carried out to highlight processing, generates final enhancing image；
By projection arrangement by can light see in the form of to the target object project the final enhancing image, and make described final
The projection of enhancing image coincides with target object, so that the target object shown by the final enhancing image is quiet
Arteries and veins is presented on the position where the vein of the target object.
2. a kind of vein imaging system, which is characterized in that including infrared light supply, infrared eye, projection arrangement and processor；
The infrared light supply is for emitting infrared light, wherein the infrared light supply coverage goal object；
Infrared eye is used to acquire the infrared image of the target object, wherein the infrared image presents the mesh
Mark the vein picture of object；
Projection arrangement, for projecting the infrared image to the target object in the form of visible light, wherein the infrared figure
The projection of picture coincides with the target object, and the picture of the vein of the target object presented in the infrared image is thrown
On position where shadow to the vein of the target object；
The processor enhances the infrared image for obtaining the collected infrared image of infrared eye
Contrast generates initial enhancing image, the picture of the vein of the target object presented in the identification initial enhancing image
Face carries out the picture of the vein of the target object to highlight processing, generates final enhancing image, and send to projection arrangement
The final enhancing image；
The projection arrangement is specifically used for projecting the final enhancing image to the target object in the form of visible light,
In, the projection of the infrared image coincides with the target object, the target presented in the final enhancing image
On position where the vein image projection to the vein of the target object of object；
The processor is used to enhance the contrast of the infrared image, and the step of generating initial enhancing image is specially：
The gray value of each pixel of the infrared image is mapped to 0~1 interval range, generates the first intermediate image；
First intermediate image is subjected to low-pass filtering, so that first intermediate image is blurred, generates the second middle graph
Picture；
First intermediate image and the gray value of each corresponding pixel points of the second intermediate image are subtracted each other, generated in third
Between image；
The absolute value of the gray value of each pixel in the third intermediate image is taken, the 4th intermediate image is generated；
The gray value of each corresponding pixel in second intermediate image and the 4th intermediate image is multiplied, generates the 5th
Intermediate image；
The gray value of each pixel of 5th intermediate image is mapped into 0~255 interval range, generates the initial increasing
Strong image.
3. vein imaging system according to claim 2, which is characterized in that the vein imaging system further includes heat mirror；
The reflecting surface of the heat mirror is corresponding with the infrared eye, for reflecting the target pair to infrared eye
As the infrared light reflected, the transparent transmission face of the heat mirror is corresponding with projection arrangement, is sent out for projection arrangement described in transparent transmission
Visible light.
4. vein imaging system according to claim 2, which is characterized in that the vein imaging system further includes filtering
Piece；
The optical filter is set on the viewing lens of the infrared eye.
5. vein imaging system according to claim 4, which is characterized in that
The optical filter is used to filter the light other than 840 nanometers~860 nano wave lengths.
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| CN107837076B (en) * | 2017-11-27 | 2020-09-11 | 东北大学 | Near-infrared self-registration vein imaging device and method |
| CN108703745A (en) * | 2018-06-07 | 2018-10-26 | 中国计量大学 | Vein developing method based on structure light and vein imaging system |
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| US8730321B2 (en) * | 2007-06-28 | 2014-05-20 | Accuvein, Inc. | Automatic alignment of a contrast enhancement system |
| WO2009125887A1 (en) * | 2008-04-11 | 2009-10-15 | Seong Keun Kim | Hypodermic vein detection imaging apparatus based on infrared optical system |
| CN203138450U (en) * | 2012-11-06 | 2013-08-21 | 中国计量学院 | Hand vein image display |
| CN203263366U (en) * | 2013-06-03 | 2013-11-06 | 无锡拜尔医疗科技有限公司 | Vein imaging instrument |
| CN203408033U (en) * | 2013-06-27 | 2014-01-29 | 西安交通大学 | Dual optical path combined system applied to periphery vessel vein development device |
| CN104146683A (en) * | 2014-04-24 | 2014-11-19 | 深圳大学 | Vein viewing instrument and imaging method thereof |
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