CN109506900B - Imaging frame rate detection system and detection method for near infrared camera - Google Patents
Imaging frame rate detection system and detection method for near infrared camera Download PDFInfo
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- CN109506900B CN109506900B CN201811309967.2A CN201811309967A CN109506900B CN 109506900 B CN109506900 B CN 109506900B CN 201811309967 A CN201811309967 A CN 201811309967A CN 109506900 B CN109506900 B CN 109506900B
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- 238000003384 imaging method Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract 5
- 238000005286 illumination Methods 0.000 claims description 24
- 229910052736 halogen Inorganic materials 0.000 claims description 12
- 150000002367 halogens Chemical class 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 12
- 230000003595 spectral effect Effects 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
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Abstract
The invention discloses an imaging frame rate detection system and a detection method for a near infrared camera. The near infrared camera to be measured is placed in an observation area of the bar code rotary drum, the bar code rotary drum is irradiated after being dimmed by the driving control card, the servo motor drives the bar code rotary drum to rotate at a constant speed, the near infrared camera signal acquisition card can acquire and output bright field irradiation bar code information on the rotary drum acquired by the near infrared camera to be measured to the image workstation, and the image workstation acquires the bar code information through a code reading program and is correctly compared with the standard library. In the process, the rotating speed of a servo motor of the bar code rotary drum is continuously increased until the near infrared camera to be detected cannot acquire correct bar code information, namely the imaging frame rate limit of the camera is reached, and imaging frame rate data can be acquired according to parameter calculation such as the rotating speed of the servo motor and the size of the bar code rotary drum, so that the imaging frame rate detection of the near infrared camera to be detected is realized.
Description
Technical Field
The invention relates to the technical field of imaging frame rate detection, in particular to an imaging frame rate detection system and an imaging frame rate detection method for a near infrared camera.
Background
At present, the imaging frame rate detection of the near-infrared camera is mainly obtained by a user through a manual photographing and collecting mode, and due to the influence of ambient light and a sample spectrum, multiple operations are required to be performed to obtain more accurate data, so that the operation is very inconvenient, and a large amount of scientific research time is wasted. However, at present, no imaging frame rate detection system of a near infrared camera for practical application exists at home and abroad.
The scheme of the invention aims at improving the imaging frame rate detection system of the existing near infrared camera.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an imaging frame rate detection system and an imaging frame rate detection method for a near infrared camera, which effectively solve the problems of the prior art that manual repeated acquisition is needed, the operation is inconvenient and the efficiency is low.
In order to achieve the above object, the technical scheme adopted for solving the technical problems is as follows:
the invention discloses an imaging frame rate detection system for a near infrared camera, which comprises an illumination light source, a bar code rotary drum, a near infrared camera to be detected, a near infrared camera signal acquisition card, an image workstation, a driving control card and a servo motor, wherein the driving control card comprises a driving control module, a driving control module and a driving control module, wherein the driving control module comprises a driving control module, the driving control module comprises a driving control module and a driving control module, and the driving control module comprises a driving control module, wherein the driving control:
the illumination light source is electrically connected with the drive control card and is used for providing an collectable spectrum band for the near infrared camera to be measured;
the bar code rotary drum is electrically connected with the servo motor and is used for providing a bright field image with bar code information for the near infrared camera to be tested;
the near infrared camera signal acquisition card is respectively and electrically connected with the near infrared camera to be detected and the image workstation, and is used for acquiring bar code information acquired by the near infrared camera to be detected and outputting the bar code information to the image workstation;
the image workstation is respectively and electrically connected with the near infrared camera signal acquisition card and the drive control card, and is used for compiling bar code information acquired by the near infrared camera to be detected through a code reading program, carrying out correct comparison with a standard library and simultaneously communicating with the drive control card;
one end of the driving control card is electrically connected with the image workstation, and the other end of the driving control card is respectively electrically connected with the illumination light source and the servo motor and is used for receiving a driving signal sent by the image workstation, dimming the illumination light source and controlling the servo motor;
the servo motor is respectively and electrically connected with the bar code rotary drum and the driving control card and is used for driving the bar code rotary drum to rotate at a constant speed.
Further, the illumination light source is a dimmable halogen lamp.
Further, the lamplight of the adjustable halogen lamp comprises a large number of spectrum bands which can be collected by the near infrared camera to be detected.
Further, the spectrum band is 780-2200nm.
Further, the wavelength of the signal responded by the near infrared camera to be detected is 780-2200nm.
The invention further discloses an imaging frame rate detection method for the near infrared camera, which adopts the imaging frame rate detection system to detect, and comprises the following steps:
step 1: placing a near infrared camera to be detected in an observation area of a bar code rotary drum, controlling an illumination light source to adjust light through a drive control card, and irradiating the light onto the bar code rotary drum, wherein the light comprises a large number of spectrum bands which can be collected by the near infrared camera to be detected;
step 2: the servo motor drives the bar code rotary drum to rotate at a constant speed, and the bright field irradiation bar code information on the bar code rotary drum is acquired and output to the image workstation through the near infrared camera signal acquisition card;
step 3: the image workstation acquires bar code information through a code reading program and performs correct comparison with a standard library;
step 4: continuously increasing the rotating speed of a servo motor of the bar code rotary drum until the near infrared camera to be detected cannot acquire correct bar code information, namely the imaging frame rate limit of the near infrared camera to be detected is reached;
step 5: and obtaining imaging frame frequency data according to parameter calculation such as the rotating speed of the servo motor and the size of the bar code rotary drum, thereby realizing imaging frame frequency detection of the near infrared camera to be detected.
Further, in step 1, the illumination light source is a dimmable halogen lamp.
Further, the lamplight of the adjustable halogen lamp comprises a large number of spectrum bands which can be collected by the near infrared camera to be detected.
Further, the spectrum band is 780-2200nm.
Further, in step 1, the wavelength of the signal responded by the near infrared camera to be detected is 780-2200nm.
Compared with the prior art, the invention has the following advantages and positive effects due to the adoption of the technical scheme:
the imaging frame rate detection system for the near infrared camera provided by the invention can be used for practical use, is convenient to operate, overcomes the inconvenience of manual operation in the prior art, has the characteristics of high working efficiency and simple structure, and has good economic and social benefits.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the invention and that other drawings may be obtained from these drawings by those skilled in the art without inventive effort. In the accompanying drawings:
FIG. 1 is a schematic diagram of a system architecture of an imaging frame rate detection system for a near infrared camera according to the present invention;
fig. 2 is a flow chart of an imaging frame rate detection method for a near infrared camera according to the present invention.
[ Main symbol description ]
1-an illumination source;
2-bar code drum;
3-a near infrared camera to be measured;
4-a near infrared camera signal acquisition card;
5-an image workstation;
6-driving the control card;
7-servo motor.
Detailed Description
The following description and the discussion of the embodiments of the present invention will be made more complete and less in view of the accompanying drawings, in which it is to be understood that the invention is not limited to the embodiments of the invention disclosed and that it is intended to cover all such modifications as fall within the scope of the invention.
Example 1
As shown in fig. 1, the invention discloses an imaging frame rate detection system for a near infrared camera, which comprises an illumination light source 1, a bar code drum 2, a near infrared camera 3 to be detected, a near infrared camera signal acquisition card 4, an image workstation 5, a driving control card 6 and a servo motor 7, wherein:
the illumination light source 1 is electrically connected with the drive control card 6 and is used for providing an collectable spectrum band for the near infrared camera 3 to be measured;
the bar code rotary drum 2 is electrically connected with the servo motor 7 and is used for providing a bright field image with bar code information for the near infrared camera 3 to be tested;
the near infrared camera signal acquisition card 4 is respectively and electrically connected with the near infrared camera 3 to be detected and the image workstation 5, and is used for acquiring bar code information acquired by the near infrared camera 3 to be detected and outputting the bar code information to the image workstation 5;
the image workstation 5 is respectively and electrically connected with the near infrared camera signal acquisition card 4 and the drive control card 6, and is used for compiling bar code information acquired by the near infrared camera 3 to be detected through a code reading program, carrying out correct comparison with a standard library and simultaneously communicating with the drive control card 6;
one end of the driving control card 6 is electrically connected with the image workstation 5, and the other end of the driving control card is respectively electrically connected with the illumination light source 1 and the servo motor 7, and is used for receiving a driving signal sent by the image workstation 5, dimming the illumination light source 1 and controlling the servo motor 7;
the servo motor 7 is electrically connected with the bar code rotary drum 2 and the driving control card 6 respectively, and is used for driving the bar code rotary drum 2 to rotate at a constant speed.
Further, the illumination light source 1 is a dimmable halogen lamp. The lamplight of the dimmable halogen lamp comprises a large number of spectral bands which can be collected by the near infrared camera 3 to be measured. The spectrum band is 780-2200nm.
Further, the barcode drum 2, in combination with the illumination light source 1, contains bright field barcode information that can be collected by the near infrared camera 3 to be measured, and the wavelength of the signal responded by the near infrared camera 3 to be measured includes, but is not limited to, 780-2200nm.
Example two
As shown in fig. 2, the present invention further discloses an imaging frame rate detection method for a near infrared camera, which uses the imaging frame rate detection system to detect, and includes the following steps:
step 1: placing a near infrared camera 3 (780-2200 nm wave band) to be detected in an observation area of the bar code rotary drum 2, controlling the illumination light source 1 to adjust light through the drive control card 6, and irradiating the light onto the bar code rotary drum 2, wherein the light comprises a large number of spectrum wave bands which can be collected by the near infrared camera 3 to be detected;
step 2: the servo motor 7 drives the bar code rotary drum 2 to rotate at a constant speed, and the bright field irradiation bar code information on the bar code rotary drum 2 is acquired and output to the image workstation 5 through the near infrared camera signal acquisition card 4;
step 3: the image workstation 5 acquires bar code information through a code reading program and performs correct comparison with a standard library;
step 4: the rotating speed of the servo motor 7 of the bar code rotary drum 2 is continuously increased until the near infrared camera 3 to be detected cannot acquire correct bar code information, and the imaging frame rate limit of the near infrared camera 3 to be detected is reached;
step 5: and the imaging frame frequency data can be obtained according to the rotation speed of the servo motor 7, the size and other parameters of the bar code rotary drum 2, so that the imaging frame frequency detection of the near infrared camera 3 to be detected is realized.
Further, in step 1, the illumination light source 1 is a tunable halogen lamp, and the light of the tunable halogen lamp includes a plurality of spectral bands that can be collected by the near infrared camera 3 to be measured, and the spectral bands are 780-2200nm.
Further, in step 1, the barcode drum 2 cooperates with the illumination light source 1 to include bright field barcode information that can be collected by the near infrared camera 3 to be detected, and the wavelength of the signal responded by the near infrared camera 3 to be detected includes, but is not limited to, 780-2200nm.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The imaging frame rate detection system for the near-infrared camera is characterized by comprising an illumination light source, a bar code rotary drum, a near-infrared camera to be detected, a near-infrared camera signal acquisition card, an image workstation, a driving control card and a servo motor, wherein:
the illumination light source is electrically connected with the drive control card and is used for providing an collectable spectrum band for the near infrared camera to be measured;
the bar code rotary drum is electrically connected with the servo motor and is used for providing a bright field image with bar code information for the near infrared camera to be tested;
the near infrared camera signal acquisition card is respectively and electrically connected with the near infrared camera to be detected and the image workstation, and is used for acquiring bar code information acquired by the near infrared camera to be detected and outputting the bar code information to the image workstation;
the image workstation is respectively and electrically connected with the near infrared camera signal acquisition card and the drive control card, and is used for compiling bar code information acquired by the near infrared camera to be detected through a code reading program, carrying out correct comparison with a standard library and simultaneously communicating with the drive control card;
one end of the driving control card is electrically connected with the image workstation, and the other end of the driving control card is respectively electrically connected with the illumination light source and the servo motor and is used for receiving a driving signal sent by the image workstation, dimming the illumination light source and controlling the servo motor;
the servo motor is respectively and electrically connected with the bar code rotary drum and the driving control card and is used for driving the bar code rotary drum to rotate at a constant speed.
2. The imaging frame rate detection system for a near infrared camera of claim 1, wherein the illumination source is a dimmable halogen lamp.
3. An imaging frame rate detection system for a near infrared camera according to claim 2, wherein the light of the dimmable halogen lamp comprises a plurality of spectral bands that can be collected by the near infrared camera under test.
4. An imaging frame rate detection system for a near infrared camera according to claim 3, wherein said spectral band is 780-2200nm.
5. An imaging frame rate detection system for a near infrared camera according to claim 1, wherein the wavelength of the signal to which the near infrared camera to be detected is responsive is between 780-2200nm.
6. An imaging frame rate detection method for a near infrared camera, characterized in that detection is performed using the imaging frame rate detection system according to any one of claims 1 to 5, comprising the steps of:
step 1: placing a near infrared camera to be detected in an observation area of a bar code rotary drum, controlling an illumination light source to adjust light through a drive control card, and irradiating the light onto the bar code rotary drum, wherein the light comprises a large number of spectrum bands which can be collected by the near infrared camera to be detected;
step 2: the servo motor drives the bar code rotary drum to rotate at a constant speed, and the bright field irradiation bar code information on the bar code rotary drum is acquired and output to the image workstation through the near infrared camera signal acquisition card;
step 3: the image workstation acquires bar code information through a code reading program and performs correct comparison with a standard library;
step 4: continuously increasing the rotating speed of a servo motor of the bar code rotary drum until the near infrared camera to be detected cannot acquire correct bar code information, namely the imaging frame rate limit of the near infrared camera to be detected is reached;
step 5: and obtaining imaging frame frequency data according to the rotating speed of the servo motor and the size parameter of the bar code drum, thereby realizing imaging frame frequency detection of the near infrared camera to be detected.
7. The method according to claim 6, wherein in step 1, the illumination light source is a dimmable halogen lamp.
8. The method of claim 7, wherein the light of the dimmable halogen lamp comprises a plurality of spectral bands that can be collected by the near infrared camera under test.
9. The method for near infrared camera imaging frame rate detection of claim 8, wherein the spectral band is 780-2200nm.
10. The method according to claim 6, wherein in step 1, the signal wavelength to which the near infrared camera to be measured responds is 780-2200nm.
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| CN110493593B (en) * | 2019-07-30 | 2020-09-29 | 中国科学院西安光学精密机械研究所 | Camera device frame frequency test system and test method thereof |
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