CN213812592U - Multispectral imaging device for stroboscopic mobile phone - Google Patents
Multispectral imaging device for stroboscopic mobile phone Download PDFInfo
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- CN213812592U CN213812592U CN202022695907.8U CN202022695907U CN213812592U CN 213812592 U CN213812592 U CN 213812592U CN 202022695907 U CN202022695907 U CN 202022695907U CN 213812592 U CN213812592 U CN 213812592U
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Abstract
The utility model discloses a multi-spectral imaging device for mobile phone stroboscopic, which is characterized in that a LED array light source and an imaging control component are arranged under a mobile phone lens, the imaging control component is in Bluetooth wireless connection with a smart phone, and the imaging control component consists of a micro singlechip, a power supply conversion module, an LED driving module, a key module and a Bluetooth module which are connected by wiring; the LED array light source is a stroboscopic multispectral array with nine LED lamps in different wave bands distributed in a circular shape; the imaging control assembly controls the LED array light source to realize time-sharing stroboflash of LED lamps with different spectral bands through APP software at the mobile phone end, and the imaging control assembly is matched with the smart phone to finish acquisition of multispectral images. Compared with the prior art, the utility model have the exposure of cell-phone camera lens cooperation LED lamp, can obtain multispectral image fast, greatly satisfied people to multispectral formation of image measuring actual need, the system installation is simple, easily integration, and response speed is fast.
Description
Technical Field
The utility model belongs to the technical field of multispectral imaging technique and specifically relates to a stroboscopic multispectral imaging device of cell-phone.
Background
The multispectral imaging technology is different from common full-spectrum or white-light imaging, and is to separate different spectrums to perform multiple imaging, while common full-spectrum imaging is to perform multiple-spectrum one-time imaging. The photoelectric technology is applied to machine vision, and is characterized in that a plurality of different imaging images are obtained by collecting the same object through the inconsistent degrees of absorption and reflection of the object under different spectrums, and then the images are processed by an algorithm of detail enhancement and feature extraction to find out different details. Camera-based imaging technology is the future of spectral imaging, which has great potential in all areas of imaging and image processing, since spectral imaging or spectral analysis is the ultimate physical footprint of any substance. In the search for such spectral footprints, multispectral imaging techniques will continue to evolve.
At present, the application market of multispectral cameras is more and more wide, and according to different applications, the following three types of multispectral cameras are mainly used: 1) a multi-lens multi-spectrum camera has multiple lenses, each lens has a filter, the multiple lenses shoot the same scene at the same time, and record the image information of several different spectral bands, such as Sequoia multi-spectrum camera of Parrot company, France, RedEdge-MX and ALTUM multi-spectrum camera of Micasense company, USA, etc. 2) A multi-phase multi-spectrum camera is composed of several cameras, each with different filters for receiving the information of different spectral bands of scenery and shooting the same scenery to obtain a set of film with specific spectral bands. 3) A single-lens multispectral camera adopts a lens to shoot scenery, and filter films with different wave bands are respectively plated on pixels of a detector to realize multispectral imaging. Like the SILIOS corporation 9 channel multispectral camera, the XIMEA corporation 16 and 25 channel multispectral cameras. Among the three types of multispectral cameras, the single-lens mosaic type multispectral camera has the advantages of simple structure and high image overlapping precision, and the multi-lens and multi-camera type cameras mainly consider that the cameras are difficult to accurately align at the same place in a short distance, but are widely used in the field of near-earth-air remote sensing.
The three multispectral image methods have the defects of complex system structure, high system cost, low flexibility and the like, and the technology cannot meet the standard of most industrial detection applications. In the prior art, a full-automatic multispectral imaging high-resolution solution is provided by Phase One, light with multiple wavelengths is shot by using a special camera, a light source and a filter turntable to form multiple images, and the obtained multiple images are used for analyzing the substances and the surfaces of cultural relics, so that the readability, the authenticity, the age and the material characteristic distribution are determined, and the whole set of equipment is large in size, numerous in structure and very expensive in cost. In addition, the multispectral technology is rarely combined with a mobile phone, an electric rotary multispectral imaging device (application number: 201710760260.2) is adopted in the existing patent, the wavelength entering an imaging camera of the smart phone is selected through a rotary disc, so that different spectrums are imaged, the whole system is complex in structure, and meanwhile, the imaging process is complex and difficult to operate.
Besides the patent, no patent technology combining the mobile phone and the multispectral imaging technology and the published reports of similar documents at home and abroad are available. Due to the fact that in a specific scene, such as a safety field, people hope to shoot the interior of an object through multispectral imaging and find out the interior problems of a product. Therefore, there is a need to develop a multispectral imaging system that can meet various application requirements and is low in cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a to the not enough of prior art and the stroboscopic multispectral imaging device of a cell-phone that designs, adopt LED stroboscopic exposure and the cell-phone function of shooing from the area to combine together, the multispectral imaging device of constitution, the spectrum spectral band through miniature singlechip selection formation of image, utilize camera lens and the supporting circuit who has got rid of infrared filter, combine cell-phone end APP to accomplish to carry out luminance to LED, interactive control such as time, finally show multispectral image on the screen, system installation is simple, easily integration, response speed is fast, the exposure of cell-phone camera lens cooperation LED lamp, can obtain multispectral image fast, moreover, the steam generator is compact in structure, small and exquisite and portable, higher flexibility has been had, people's actual need to multispectral imaging measurement has greatly been satisfied.
The purpose of the utility model is realized like this: a multispectral imaging device for mobile phone stroboscopic is characterized in that an LED array light source and an imaging control component are arranged below a camera lens of a smart phone, the LED array light source is connected with the imaging control component through a control line, the imaging control component is in Bluetooth wireless connection with the smart phone, and the imaging control component is composed of a micro single chip microcomputer, a power supply conversion module, an LED driving module, a key module, a Bluetooth module and a jumper wire interface which are connected through wiring; the LED array light source is a stroboscopic multispectral array with nine LED lamps in different wave bands distributed in a circular shape; the imaging control assembly controls the LED array light source to realize time-sharing stroboflash of LED lamps with different spectral bands through APP software at the mobile phone end, and the imaging control assembly is matched with the smart phone to finish acquisition of multispectral images.
The power supply conversion module supplies power to each functional module and the LED array light source.
The imaging control assembly is communicated with the smart phone through the Bluetooth module, and interactive control of brightness and time of the LED lamp is achieved.
The LED array light source consists of nine different wave bands of LED lamps, namely ultraviolet light with the wavelength of 365nm, purple light with the wavelength of 390nm, blue light with the wavelength of 460nm, green light with the wavelength of 515nm, yellow light with the wavelength of 585nm, red light with the wavelength of 620nm, deep red light with the wavelength of 650nm, far red light with the wavelength of 730nm and infrared light with the wavelength of 950nm, and the LED lamps are arranged in a circular shape at equal intervals.
The micro single chip microcomputer controls the on and off of the LED lamp and the interactive control of the brightness and time by using a programmable LED driving module controlled by an I2C bus.
The LED driving module and the smart phone are communicated with each other according to an I2C protocol, any LED lamp on a calling bus can be set through an I2C bus, and further the state of LED driving output is set through software programming of an output state register, so that the LED lamps are set to be turned on and turned off in turn.
The LED array light source changes the duty ratio by setting the value of a brightness control register to adjust the brightness of an LED lamp, the lamp is brighter when the duty ratio is larger, in addition, the value of GRPPWM is set to adjust the duty ratio to change from 0% -99.6%, and the longer the duty ratio value is, the longer the lamp is on; the brightness and the time of the LED lamp can be adjusted according to different requirements of actual application environments and measured objects.
The smart phone realizes serial port communication with the micro single chip microcomputer by using mobile phone application software, controls the time-sharing exposure of LED lamps with different spectral bands by setting values of different registers of the LED controller, and completes multispectral image acquisition by matching with a smart phone camera.
Compared with the prior art, the utility model following profitable technological effect has and show the progress:
1) the multispectral imaging device is easy to integrate, and the system is simple to install;
2) the response speed is high, and the multispectral image can be quickly obtained by matching the mobile phone lens with the exposure of the LED lamp;
3) the flexibility is high, a user can be allowed to adjust the multispectral imaging system according to the requirements of practical application, and the system can stably image and has good stability through the design of an anti-shake algorithm;
4) the time division multiplexing method is used for controlling the respective exposure of LEDs and the like in different wave bands, so that the adjustability of the number of the wave bands of a spectrum can be realized, namely, the specific wave bands can be accurately identified;
5) the cost of the multispectral imaging system is lower than that of multispectral cameras on the market, and used components are low in price, close to the consumption expectation of terminal consumers, and meet the actual requirements of people on multispectral imaging measurement.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of an imaging control module;
FIG. 3 is a schematic diagram of an LED array light source structure;
fig. 4 is a schematic diagram of the application of the present invention.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
Referring to the attached drawing 1, the utility model comprises a smart phone 1, and an LED array light source 2 and an imaging control component 4 which are arranged below a camera lens 11, wherein the LED array light source 2 is connected with the imaging control component 4 by a control line 3, and the imaging control component 4 is in Bluetooth wireless connection with the smart phone 1; the imaging control component 4 controls the LED array light source 2 to realize time-sharing exposure of LED lamps with different spectral bands through mobile phone end APP software, and completes acquisition of multispectral images in cooperation with the smart phone 1.
Referring to fig. 2, the imaging control assembly 4 is composed of a micro single chip 41, a power conversion module 42, an LED driving module 43, a key module 44, a bluetooth module 45 and a jumper interface 46, which are connected by wiring, and the micro single chip 41 realizes instruction control, and the power conversion module 42 supplies power to each functional module and the LED lamp; communication is established between the Bluetooth module 45 and the smart phone 1, and the control of the LED array light source 2 by the phone end APP is realized; the key module 44 can independently realize on-off control of the LED lamp.
Referring to fig. 3, the LED array light source 2 is a stroboscopic multispectral array in which nine LED lamps with different wave bands are circularly distributed, and the interval distances of the LED lamps are equal, where the nine different wave bands are respectively: ultraviolet light 21 (wavelength 365 nm), violet light 22 (wavelength 390nm), blue light 23 (wavelength 460nm), green light 24 (wavelength 515nm), yellow light 25 (wavelength 585nm), red light 26 (wavelength 620 nm), deep red light 27 (wavelength 650nm), far-red light 28 (wavelength 730nm), and infrared light 29 (wavelength 950 nm).
The utility model discloses the main device that adopts describes as follows:
1) the smart phone 1 adopts a smart phone which has a photographing function and a professional mode for photographing;
2) the LED array light source 2 comprises an LED driving chip and nine LED lamp bead chips with different wavelengths, wherein the LED lamp bead chips respectively use ultraviolet light 21 (with the wavelength of 365 nm), purple light 22 (with the wavelength of 390nm), blue light 23 (with the wavelength of 460nm), green light 24 (with the wavelength of 515nm), yellow light 25 (with the wavelength of 585nm), red light 26 (with the wavelength of 620 nm), deep red light 27 (with the wavelength of 650nm), far red light 28 (with the wavelength of 730nm) and infrared light 29 (with the wavelength of 950nm), and the luminous intensity of the used LED lamp beads can reach 50 mcd.
3) The imaging control assembly 4 is composed of a micro single chip microcomputer 41, a power supply conversion module 42, an LED drive module 43, a key module 44, a Bluetooth module 45 and a jumper interface 46, wherein the micro single chip microcomputer 41 is connected with the LED array light source 2 through a control line 3 and realizes control.
The utility model discloses a smart mobile phone 1 is from taking camera lens 11, and protection film, lens group, focus motor, coating white glass, CMOS image sensor and circuit connection base plate several parts and constitute. The optical filter used in the camera of the smartphone 1 is an infrared optical filter, and in order to ensure that infrared light can be captured normally, coated white glass with the same thickness and size is used for replacement, so that normal imaging is performed, and ultraviolet light, visible light, near infrared light and far infrared light are obtained by the camera of the smartphone. The smart phone 1 is in information communication with the control terminal in a Bluetooth and other wireless transmission mode, the software sends control information to the control unit, the control unit operates according to instructions, and particularly, the LED lamp of a certain spectrum can be controlled to be turned on through a visual software interface, the flashing frequency is controlled, and time-sharing stroboscopic is achieved. The LED array light source 2 is adjusted in brightness, time, and on/off by the LED driving module 43 through setting the value of the brightness register, the value of GRPWM, and the value of the output register.
Referring to fig. 4, the present invention is configured as follows: the LED array light source 2 and the imaging control component 4 are fixed below a camera lens 11 of the smart phone 1, so that the shooting effect of the lens is not affected, and then the control line 3 of the LED array light source 2 is connected with the imaging control module 4 to complete the setting of the imaging device.
Referring to fig. 4, the present invention collects multispectral images according to the following steps:
1) the imaging target 5 is placed in front of the camera lens 11, and the focal length is adjusted to enable the target to be imaged clearly.
2) Opening a multispectral imaging APP of the mobile phone, setting proper lens shutter time and LED flash frequency, debugging to a normal working state, selecting a spectrum section needing imaging according to actual requirements, lighting an LED of the required spectrum section according to certain frequency according to program control, obtaining images of a plurality of spectrum sections of an imaging target, and respectively storing the corresponding LED spectrum section and the corresponding image in the mobile phone according to mobile phone software prompt.
3) And selecting a data preprocessing option in the mobile phone multispectral imaging APP software to finish preprocessing of multispectral images, effectively reducing imaging errors caused by an imaging module, and then placing all spectral band images corresponding to the detected target in the same folder.
4) And calling an application analysis model, and analyzing and processing the obtained multispectral image.
In the industrial application such as PCB detection, the utility model has the advantages that multispectral imaging is helpful for detecting surface components such as capacitors and transistors, and is also helpful for detecting metal wires such as copper wires embedded inside, and in addition, when electronic products are recycled, the multispectral imaging is also very useful for accurately detecting precious metals, parts and the like; meanwhile, in the spinning and printing detection, the multispectral camera can help accurately reproduce and measure the color, not only can accurately match the color of a sample, but also can accurately identify various clothing materials such as leather, resin, plastic, silk threads, metal, polyester and the like, and in addition, the multispectral camera can also be widely applied to the fields of identification of cultural relics and material evidences, quality detection of agricultural products, identification of counterfeit goods and the like.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the claims of the present invention.
Claims (4)
1. The multispectral imaging device for the stroboscopic mobile phone is characterized in that an LED array light source (2) and an imaging control component (4) are arranged below a camera lens (11) of a smart mobile phone (1), the LED array light source (2) is connected with the imaging control component (4) through a control line (3), the imaging control component (4) is in Bluetooth wireless connection with the smart mobile phone (1), and the imaging control component (4) is composed of a micro single chip microcomputer (41), a power supply conversion module (42), an LED driving module (43), a key module (44) and a Bluetooth module (45), wherein the micro single chip microcomputer, the power supply conversion module, the LED driving module, the key module and the Bluetooth module are connected through wiring; the LED array light source (2) is a stroboscopic multispectral array with nine LED lamps of different wave bands distributed in a circular shape; the imaging control assembly (4) controls the LED array light source (2) to realize time-sharing stroboflash of LED lamps with different spectral bands through mobile phone end APP application software, and the intelligent mobile phone (1) is matched to complete collection of multispectral images.
2. The stroboscopic multispectral imaging device according to claim 1, wherein the power conversion module (42) supplies power to each functional module and the LED array light source (2).
3. The multispectral mobile phone stroboscopic imaging device according to claim 1, wherein the imaging control module (4) communicates with the smartphone (1) via the bluetooth module (45) to perform interactive brightness and time control on the LED lamp.
4. The multispectral imaging device for stroboscopic mobile phone imaging according to claim 1, wherein the LED array light source (2) is composed of nine different bands of LED lamps, i.e. uv light (21) with 365nm wavelength, violet light (22) with 390nm wavelength, blue light (23) with 460nm wavelength, green light (24) with 515nm wavelength, yellow light (25) with 585nm wavelength, red light (26) with 620nm wavelength, deep red light (27) with 650nm wavelength, far red light (28) with 730nm wavelength and infrared light (29) with 950nm wavelength, and they are arranged in a circle at equal distances.
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| CN202022695907.8U CN213812592U (en) | 2020-11-20 | 2020-11-20 | Multispectral imaging device for stroboscopic mobile phone |
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| CN202022695907.8U CN213812592U (en) | 2020-11-20 | 2020-11-20 | Multispectral imaging device for stroboscopic mobile phone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374792A (en) * | 2021-12-13 | 2022-04-19 | 中国科学院深圳先进技术研究院 | LED illumination multispectral imaging control system |
| CN117074321A (en) * | 2023-08-15 | 2023-11-17 | 浙江大学 | Method for detecting chemical components of extracting solution based on infrared light information smart phone |
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2020
- 2020-11-20 CN CN202022695907.8U patent/CN213812592U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374792A (en) * | 2021-12-13 | 2022-04-19 | 中国科学院深圳先进技术研究院 | LED illumination multispectral imaging control system |
| CN114374792B (en) * | 2021-12-13 | 2024-02-02 | 中国科学院深圳先进技术研究院 | LED illumination multispectral imaging control system |
| CN117074321A (en) * | 2023-08-15 | 2023-11-17 | 浙江大学 | Method for detecting chemical components of extracting solution based on infrared light information smart phone |
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