CN108844901B - Multispectral image acquisition device - Google Patents
Multispectral image acquisition device Download PDFInfo
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- CN108844901B CN108844901B CN201810664789.9A CN201810664789A CN108844901B CN 108844901 B CN108844901 B CN 108844901B CN 201810664789 A CN201810664789 A CN 201810664789A CN 108844901 B CN108844901 B CN 108844901B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
Abstract
The present disclosure discloses a multispectral image acquisition device, comprising: casing, light source, put thing board and image acquisition hole, wherein: the light source and the object placing plate are positioned in a space formed by the shell; the light source is arranged at the bottom of the shell and used for generating irradiation light; the object placing plate is arranged in the middle of the shell and used for bearing the detected object; the object placing plate is provided with an irradiation hole for transmitting irradiation light, and the object to be detected is placed above the irradiation hole, so that the irradiation light irradiates the object to be detected; and an image acquisition hole is formed in one end, far away from the light source, of the shell and used for acquiring an image formed after the irradiation light irradiates the detected object. The invention utilizes different light sources to generate different wavelengths to irradiate the detected object, and utilizes the multispectral camera to shoot pictures with different wavelengths to obtain images with different spectrums, thereby avoiding a complex optical structure, reducing the cost, effectively avoiding the interference of an external light source and ensuring that all light rays entering the camera completely pass through the detected object.
Description
Technical Field
The disclosure relates to the technical field of analytical instruments, in particular to a transmission type absorption multispectral image acquisition device.
Background
The multispectral imaging technology is widely applied, is widely used in the fields of military affairs such as missile early warning, investigation, ocean monitoring, guidance, military mapping, meteorological detection and the like, and is also widely applied in a series of fields such as geology, resource investigation, agriculture and forestry, hydrology, ocean, medical treatment, environmental monitoring, scientific experiments and the like. Therefore, the acquisition of multispectral images becomes very important.
In the prior art, a multispectral image capturing device generally uses a light splitting device to split an incident full-band or wide-band optical signal into a plurality of narrow-band light beams, and then images the light beams on corresponding detectors respectively, so as to obtain images of different spectral bands. At present, the light splitting equipment mainly adopts methods such as grating light splitting, Michelson double-beam interference light splitting and the like, but the methods all need to use complex and precise optical structures, so that a multispectral image acquisition device is high in cost and price.
Disclosure of Invention
In order to solve the problems in the prior art, the present disclosure provides a multispectral image collecting device, which utilizes different light sources to generate different wavelengths to irradiate a detected object, thereby obtaining images with different spectrums, avoiding a complex optical structure, and reducing cost.
According to an aspect of the present disclosure, a multispectral image acquisition device is provided, the multispectral image acquisition device comprising: casing, light source, put thing board and image acquisition hole, wherein:
the light source and the object placing plate are positioned in a space formed by the shell;
the light source is arranged at the bottom of the shell and used for generating irradiation light;
the object placing plate is arranged in the middle of the shell and used for bearing the detected object;
the object placing plate is provided with an irradiation hole for transmitting the irradiation light, and the detected object is placed above the irradiation hole so that the irradiation light can irradiate the detected object;
and an image acquisition hole is formed in one end, far away from the light source, of the shell and used for acquiring an image formed after the irradiated light irradiates the detected object.
Optionally, the light source is an LED light source capable of generating illumination light of multiple spectra.
Optionally, the light source is a single color LED light source with different wavelengths, which can generate illumination light of multiple wavelengths.
Optionally, the light source is connected with a light condensing device, and the light condensing device is located between the light source and the object placing plate and is used for condensing the irradiation light generated by the light source to the irradiation hole.
Optionally, the horizontal cross-sectional area of one end of the light-focusing device in contact with the light source is smaller than the horizontal cross-sectional area of the other end.
Optionally, the inner surface of the light-focusing device is provided with a reflective substance.
Optionally, the mobile terminal further comprises an image collecting hole cover, wherein the image collecting hole cover is detachably mounted on the shell at a position close to the image collecting hole so as to cover the image collecting hole.
Optionally, the image capturing orifice cover is provided with a locking device to lock the image capturing orifice cover to the housing.
Optionally, the side of the housing is further provided with an operation hole for a worker to operate on the detected object through the operation hole.
Optionally, the operation hole is further connected with a shading assembly to shade external light.
The multispectral image acquisition device disclosed by the invention uses light sources with different wavelengths to replace the light splitting equipment of the traditional multispectral imaging device, different wavelengths are generated by using different light sources to irradiate the detected object, the multispectral camera is used for shooting pictures with different wavelengths to obtain images with different spectrums, and the multispectral image acquisition of the object is completed, so that a complex optical structure is avoided, and the cost is reduced. The multispectral image acquisition device also designs an illumination space and an object darkroom space, thereby avoiding the interference of an external light source, ensuring that all light rays entering the camera completely pass through the detected object and not influencing the measurement result. In addition, the multispectral image acquisition device can realize combined illumination of different wavelengths in a programming mode, and sparse sampling of image spectrums is realized. The multispectral image acquisition device can be widely applied to analysis of internal components of objects or conversion of substances in a chemical reaction process.
Drawings
Fig. 1 is a schematic structural diagram of a multispectral image acquisition device according to an embodiment of the present disclosure.
Detailed Description
Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for the sake of clarity, parts not relevant to the description of the exemplary embodiments are omitted in the drawings.
In the present disclosure, it is to be understood that terms such as "including" or "having," etc., are intended to indicate the presence of the disclosed features, numbers, steps, behaviors, components, parts, or combinations thereof, and are not intended to preclude the possibility that one or more other features, numbers, steps, behaviors, components, parts, or combinations thereof may be present or added.
It should be further noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to an aspect of the present disclosure, a multispectral image acquisition device is provided, as shown in fig. 1, the multispectral image acquisition device including: casing 1, light source 2, put thing board 3 and image acquisition hole 4, wherein:
the light source 2 and the object placing plate 3 are positioned in a space formed by the shell 1;
the light source 2 is arranged at the bottom of the shell 1 and used for generating irradiation light;
the object placing plate 3 is arranged in the middle of the shell 1 and used for bearing an object to be detected;
the object placing plate 3 is provided with an irradiation hole 5 for transmitting the irradiation light, and the detected object is placed above the irradiation hole 5, so that the irradiation light can irradiate the detected object;
an image collecting hole 4 is formed in one end, far away from the light source 2, of the shell 1 and used for collecting images formed after the detected object is irradiated by irradiating light.
In an embodiment of the present invention, the housing 1 may be in various regular shapes such as a cube, a cylinder, a cone, a sphere, an ellipsoid, and the like, and of course, may also be in various irregular shapes as long as the housing can stably set the light source, the object placing plate, and the image collecting hole, and the specific shape of the housing is not particularly limited in the present disclosure.
In an embodiment of the present invention, the light source 2 is an LED light source, and can generate illumination light with various spectrums.
In an embodiment of the present invention, the light source 2 is a single-color LED light source with different wavelengths, and can generate illumination light with multiple wavelengths.
In an embodiment of the present invention, a light condensing device 6 is connected to the light source 2, and the light condensing device 6 is located between the light source 2 and the object placing plate 3, and is configured to condense the irradiation light generated by the light source 2 to the irradiation hole 5, and further irradiate the irradiation hole 5 to the detected object placed on the irradiation hole 5.
In an embodiment of the present invention, a horizontal cross-sectional area of one end of the light-gathering device 6 contacting the light source 2 is smaller than a horizontal cross-sectional area of the other end to achieve the light-gathering effect, for example, the light-gathering device 6 may be in a shape of a semi-sphere, a cone, a cylinder, or the like, and may also be in a polyhedral shape with a trapezoidal or trapezoid-like cross-section.
In an embodiment of the present invention, the inner surface of the light-gathering device 6 is disposed with a reflective substance, such as a reflective film, or coated with a reflective material, etc., so as to reflect the irradiation light generated by the light source to the irradiation holes as much as possible, pass through the irradiation holes as much as possible, and irradiate on the detected object.
In an embodiment of the present invention, the position of the irradiation hole 5 on the object placing plate 3 corresponds to the position of the light source 2, or the irradiation hole 5 and the light source 2 are on the same vertical line perpendicular to the horizontal plane, for example, when the light source 2 is located at the middle position of the bottom of the housing 1, the irradiation hole 5 is also located at the middle position of the object placing plate 3.
In an embodiment of the present invention, the image capturing holes 4 may be one or more.
In an embodiment of the present invention, a space formed by the housing 1 is a closed space to prevent external light from entering the multispectral image capturing device, and only light passing through an object to be detected in the housing is captured without being interfered by other light, wherein an illumination space is formed between the light source 2 and the object placing plate 3, and a darkroom space is formed between the object placing plate 3 and the image capturing hole 4.
In an embodiment of the present invention, the multispectral image capturing device further includes an image capturing hole cover 7, and the image capturing hole cover 7 is detachably installed on the housing 1 at a position close to the image capturing hole 4 to cover the image capturing hole 4, so as to prevent dust from entering the multispectral image capturing device when the multispectral image capturing device is not in operation.
In an embodiment of the present invention, the image collecting hole cover 7 is provided with a locking device, so that when the multispectral image collecting device does not work, the image collecting hole cover 7 is locked on the housing 1, and the multispectral image collecting device is tightly protected.
In an embodiment of the present invention, an operation hole 8 is further disposed on a side surface of the housing 1, so that a worker can perform operations on an object to be detected through the operation hole 8, such as adding a reagent, stirring, and the like. In order to prevent external light from entering the housing, the operation hole 8 is further connected with a shading component for shading the external light, wherein the shading component can be made of dark flexible substance, such as black fabric and the like.
When the multispectral image acquisition device is used, the storage vessel is placed on the irradiation hole on the storage plate, the object to be detected is placed on the vessel, the wavelength of the light source is set, the wide-spectrum camera shoots the image under the wavelength through the image acquisition hole at the top of the shell, and the multispectral image of the object to be detected can be obtained by repeating the process. For example, when a multispectral image of a chemical reaction generated by a chemical substance is to be collected, the chemical reaction vessel is placed on the irradiation hole on the object placing plate, the chemical reaction substance is placed on the chemical reaction vessel, the wavelength of the light source is set, the wide-spectrum camera captures an image at the wavelength through the image collecting hole at the top of the shell, and the multispectral image of the chemical reaction generated by the substance can be obtained by repeating the above process. By analyzing images of different spectrums, the change of components in the object at different moments can be judged by utilizing the difference of the absorption capacity of different components to light rays with different wavelengths, so that the progress of the chemical reaction can be judged. In addition, the condition that the chemical reaction occurs at different positions can be researched according to the brightness space change of different wavelengths on the multispectral image.
In an embodiment of the present invention, the multispectral image capturing device further includes a controller, where the controller is connected to the light source and is configured to control the light source to generate irradiation light with a preset wavelength, and further cooperate with the camera to capture a photo under irradiation of irradiation light with different wavelengths, and obtain a corresponding multispectral image by multiple times of shooting, so as to implement combined illumination with different wavelengths in a programming manner, and implement sparse sampling of an image spectrum.
The controller can be a single chip microcomputer, a computer and other control equipment.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A multispectral image capture device, the multispectral image capture device comprising: casing, light source, put thing board and image acquisition hole, wherein:
the light source and the object placing plate are positioned in a space formed by the shell;
the light source is arranged at the bottom of the shell and used for generating irradiation light;
the object placing plate is arranged in the middle of the shell and used for bearing an object placing vessel;
the object placing plate is provided with an irradiation hole for transmitting the irradiation light, the object placing vessel is placed above the irradiation hole, and the object to be detected is placed on the vessel, so that the irradiation light can irradiate the object to be detected, wherein the object to be detected comprises a chemical reaction substance;
an image acquisition hole is formed in one end, far away from the light source, of the shell and used for acquiring an image formed after the object to be detected is irradiated by irradiating light;
the light source and the object placing plate form a lighting space, and a darkroom space is formed between the object placing plate and the image collecting hole.
2. The multispectral image capture device of claim 1, wherein the light source is an LED light source capable of producing illumination light of a plurality of spectra.
3. The multispectral image capture device of claim 1, wherein the light source is a monochromatic LED light source having different wavelengths capable of producing multiple wavelengths of illumination light.
4. The multispectral image capture device of claim 1, wherein a light collection device is connected to the light source, the light collection device being positioned between the light source and the object holder for collecting the illumination light generated by the light source to the illumination hole.
5. The multispectral image capture device of claim 4, wherein the light gathering device has a smaller horizontal cross-sectional area at one end in contact with the light source than at the other end.
6. The multispectral image capture device of claim 4, wherein the light gathering device has a reflective material disposed on an inner surface thereof.
7. The multispectral image capture device of claim 1, further comprising an image capture well cover removably mounted on the housing proximate the image capture well to cover the image capture well.
8. The multispectral image capture device of claim 7, wherein the image capture well cover is provided with a locking device to lock the image capture well cover to the housing.
9. The multispectral image capture device of claim 1, wherein the housing further comprises an operation hole on a side surface thereof, and a worker can operate on the object to be detected through the operation hole.
10. The multispectral image capture device of claim 9, wherein the access port further comprises a light blocking element for blocking external light.
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| CN201810664789.9A CN108844901B (en) | 2018-06-25 | 2018-06-25 | Multispectral image acquisition device |
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| CN201810664789.9A CN108844901B (en) | 2018-06-25 | 2018-06-25 | Multispectral image acquisition device |
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| CN108844901B true CN108844901B (en) | 2021-08-13 |
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| CN111835956B (en) * | 2019-04-16 | 2022-07-12 | 北京地平线机器人技术研发有限公司 | Camera control method and device, image acquisition equipment and electronic equipment |
| CN110567850A (en) * | 2019-08-26 | 2019-12-13 | 苏州双刘精密仪器有限公司 | High-sensitivity optical fiber sensing system based on big data analysis |
| CN112901935B (en) * | 2021-01-20 | 2023-06-16 | 南京工程学院 | Data acquisition device capable of being remotely monitored and application method thereof |
| CN114754694B (en) * | 2022-06-13 | 2022-09-02 | 新乡职业技术学院 | Material deformation detection equipment based on it is multispectral |
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| FR2989472B1 (en) * | 2012-04-13 | 2015-09-25 | Bioaxial | METHOD AND OPTICAL DEVICE |
| CN203572769U (en) * | 2013-11-01 | 2014-04-30 | 华中农业大学 | Diffuse-transmission hyperspectral image acquisition device of potatoes |
| CN204389408U (en) * | 2015-02-09 | 2015-06-10 | 华中农业大学 | The potato transmission high spectrum image collector that light source parameters is adjustable |
| CN105158186B (en) * | 2015-09-17 | 2017-09-22 | 南京农业大学 | A kind of method detected based on high spectrum image to ternip evil mind |
| WO2017127844A1 (en) * | 2016-01-22 | 2017-07-27 | Hera Systems, Inc. | Imaging system optimized for nanosatellites with multiple cameras and image stabilization and pixel shifting |
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| CN201233362Y (en) * | 2008-06-04 | 2009-05-06 | 江西农业大学 | Multi optical spectrum imaging device for detecting fruit quality |
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Application publication date: 20181120 Assignee: Jiangsu Nangong Testing Co.,Ltd. Assignor: NANJING INSTITUTE OF TECHNOLOGY Contract record no.: X2024980001802 Denomination of invention: Multispectral image acquisition device Granted publication date: 20210813 License type: Common License Record date: 20240202 |
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