CN108844626B - Device and method for testing dynamic minimum distinguishable contrast of television viewing and aiming system - Google Patents
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Abstract
The invention provides a device and a method for testing the dynamic minimum distinguishable contrast of a television viewing and aiming system. The automatic continuous adjustment of the output light intensity of the light source system is realized by controlling the light cone angle of the light source entering the integrating sphere, and the defect that the variation range of the target optical contrast cannot be accurately and continuously adjusted by adjusting the voltage and an optical device is overcome. And a discrete collimation system is adopted, and the off-axis parabolic mirror is matched according to the focal distance of the detected camera, so that the defects that the integrated collimation lens cannot be replaced and the matching performance is poor are overcome. The tested system is placed in the collimation optical system, an infinite low-contrast target is simulated, and various motion states are simulated by combining the single-axis rotation or the precise vibration generated by the dynamic simulation platform, so that the television viewing and aiming system in the laboratory can carry out dynamic minimum distinguishable contrast measurement. When the dynamic simulation platform is not moved, the invention has the function of static MRC measurement, is convenient for comparing the measurement results of the dynamic MRC and the static MRC, and quantitatively analyzes the degree of imaging quality reduction caused by motion.
Description
Technical Field
The invention relates to the field of optical measurement and measurement, in particular to a device and a method for testing dynamic minimum distinguishable contrast of a television viewing and aiming system.
Background
The television viewing system is mainly used for searching, detecting, identifying, aiming and other functions of the target. The performance of the photoelectric imaging system is the key for determining the action distance and the striking precision of the photoelectric imaging system, so that the imaging performance of the television viewing system must be accurately measured and evaluated.
The Minimum Resolvable Contrast (MRC-Minimum Resolvable Contrast) can quantitatively give the Resolvable threshold Contrast of the television viewing system, integrates the factors such as system sensitivity, noise, target spatial frequency, human visual characteristics and the like, and can comprehensively reflect the limit performance of the photoelectric imaging system. Therefore, MRC is an important index for evaluating the imaging performance of the imaging system.
For the measurement of MRC, chinese patent ZL 201410353411.9 discloses a minimum resolvable contrast test system for near infrared cameras. The testing system adopts a single integrating sphere as a target light source, and realizes the adjustment of target contrast through a steady flow source and a diaphragm. The device has the disadvantages that the background brightness is not controlled, the actual situation that the target and the background are variable under the actual practical situation is difficult to simulate, the applicability range of the test system is small, and the test requirements of devices such as a television viewing system and a low-light-level camera cannot be met.
In Vol.27, No. 1, P32-35, 2006, Lewenjuan et al developed a portable adjustable contrast target source target generator device using the overlap integrating sphere method. The device mainly comprises a background integrating sphere, a target integrating sphere and a light splitting system, and a light source is adopted to provide illumination for each integrating sphere in a light splitting mode. The device utilizes an external adjustable rheostat to change the voltage value so that the light source brightness of the integrating sphere can be 0.3-200 cd/m2Within a range. The defects of the device are mainly reflected in that:
(1) because the target optical contrast is adjustable by adopting a method of adjusting the voltage of the light source and an optical device (such as an attenuation sheet), the color temperature stability of the target source is short of effective guarantee, and the variation range of the target optical contrast cannot be precisely and continuously adjustable.
(2) Because the collimating lens is integrated on the background integrating sphere, only when the focal distance of the tested camera and the focal distance of the collimating lens meet the proper magnification matching relation, the tested image with proper proportion can be received on the monitor, and if the focal distance of the tested camera does not meet the condition, the testing device needs to be redesigned and processed, which wastes time and labor.
(3) The device only considers the MRC measuring mode under the static condition in the design process. In practical application, most targets are in a motion state, the measurement of a television viewing system on the dynamic targets is dominant, and the test systems reported above cannot reflect the test capability of the television viewing system on the dynamic targets.
In order to solve the above problems, and with the continuous improvement of tracking and aiming accuracy of the television viewing system, it is urgently needed to develop a new device and method for measuring the dynamic minimum distinguishable contrast of the television viewing system, so as to improve the accuracy of imaging quality evaluation under the actual application condition of the television viewing system.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a device and a method for testing the dynamic minimum distinguishable contrast of a television viewing system.
The technical scheme of the invention is as follows:
the dynamic minimum distinguishable contrast testing device for the television viewing and aiming system is characterized in that: the device comprises a target integrating sphere (1), a target light source system (2), a target monitoring illuminometer (3), a target rotating wheel (4), a background integrating sphere (5), a background light source system (6), a background monitoring illuminometer (7), a filter set (8), a collimating optical system, a dynamic simulation platform (12) and a monitor (13);
the output light intensity of the target integrating sphere (1) is continuously adjustable, and the target monitoring illuminometer (3) is positioned on the side wall of the target integrating sphere (1) and can monitor and feed back the illumination of the target integrating sphere (1) in real time;
the output light intensity of the background integrating sphere (5) is continuously adjustable, and the background monitoring illuminometer (7) is positioned on the side wall of the background integrating sphere (5) and can monitor and feed back the illumination of the background integrating sphere (5) in real time;
the target rotating wheel (4) is positioned between the target integrating sphere (1) and the background integrating sphere (5), and after the target rotating wheel is illuminated by the target integrating sphere (1), a target image enters the background integrating sphere (5) to generate a target with required contrast; the target rotating wheel (4) consists of a plurality of groups of targets which are black and white and alternate, have equal line width, different spatial frequencies and different sizes, and the targets with corresponding frequencies are selected to rotate to the light passing position between the target integrating sphere (1) and the background integrating sphere (5) according to the test requirements;
the outlet position of the background integrating sphere (5) is positioned at the focal plane position of the collimating optical system;
the filter set (8) is positioned at the outlet position of the background integrating sphere (5);
the dynamic simulation platform (12) is used for fixing the tested television viewing system (11) and can simulate the application state of rotation or vibration of the television viewing system;
the monitor (13) is connected with the tested television viewing system (11), the tested television viewing system (11) receives the parallel light output by the collimating optical system, the target image is output to the monitor (13), and the minimum distinguishable contrast is distinguished by human eyes or computer software.
In a further preferred embodiment, the device for testing dynamic minimum resolvable contrast of a television viewing system is characterized in that: the collimation optical system consists of a plane reflector (9) and an off-axis parabolic reflector (10); the outlet position of the background integrating sphere (5) is positioned at the focal plane position of the off-axis parabolic reflector (10).
In a further preferred embodiment, the device for testing dynamic minimum resolvable contrast of a television viewing system is characterized in that: the target light source system (2) and the background light source system (6) have the same structure and are composed of a fan, a reflecting condenser, a light source, a stepping motor, a guide rail and a telescopic cylinder; the telescopic cylinder is controlled to move back and forth through the stepping motor, the light cone angle of the light source entering the integrating sphere is controlled, and the continuous adjustment of the output illumination of the integrating sphere is realized.
In a further preferred embodiment, the device for testing dynamic minimum resolvable contrast of a television viewing system is characterized in that: the color temperature and the color coordinate of the light source in the target light source system (2) and the background light source system (6) are calibrated and verified, and the output spectral power distribution and the color temperature output stability are ensured through the control of a precise voltage and current stabilizing power supply.
In a further preferred embodiment, the device for testing dynamic minimum resolvable contrast of a television viewing system is characterized in that: the tested television observation and aiming system (11) is placed in the collimation light path, and the collimation optical system with the corresponding focal length is matched according to the focal length of the tested television observation and aiming system, so that an observation image with the required multiplying power can be obtained on a monitor.
In a further preferred embodiment, the device for testing dynamic minimum resolvable contrast of a television viewing system is characterized in that: the dynamic simulation platform (12) can realize single-axis rotation or precise vibration and simulate the motion states of uniform motion, motion acceleration motion, simple harmonic motion and vibration.
The method for testing the dynamic minimum distinguishable contrast of the television viewing and aiming system by adopting the device is characterized by comprising the following steps of: the method comprises the following steps:
firstly, initializing working parameters of a detected television viewing system (11);
secondly, acquiring a background image F of the observation and aiming system (11) of the tested television according to the instructionbAnd stored in a memory;
thirdly, setting the brightness of the target light source system (2) to be L according to the instructiontThe brightness of the background light source system (6) is LbTo make it work in the working range of the observation and aiming system (11) of the tested television; rotating a target rotating wheel (4), and selecting a corresponding target to be detected to rotate to a light-passing position;
fourthly, acquiring a contrast image F of the observation and aiming system (11) of the tested television under the static statesRecall background image F from memorybContrast image F in the static statesDeducting background image F according to pixel corresponding modebObtaining the gray value of each pixel point to obtain a test image Fs', simultaneously displaying the image on a monitor (13);
resolving the stripe target pattern through a monitor (13), and recording the serial numbers (i, j) of the target line units corresponding to the finest stripe target pattern which can be resolved; looking up the line width of the target line unit with the serial number (i, j) by a table lookup, and calculating the corresponding spatial frequency f according to the following formula, wherein the unit is line pair per millimeter (lp/mm):
f(lp/mm)＝2i+(j-1)/6
in the formula, i and j are respectively the group number and the unit number corresponding to the target;
fifthly, selecting a working area for image processing according to the serial number of the target line unit selected in the fourth step, and enabling the working area to be inTest image F1And storing the gray matrix into a memory; the gray values in the gray matrix are sorted, and the maximum value L in the gray matrix is foundmaxAnd a minimum value LminThe spatial frequency f and the average scene brightness L are calculated according to the following formulam＝ (Lb+Lt) Minimum resolvable contrast MRC at/2:
sixthly, setting dynamic parameters of the dynamic simulation platform (13) according to requirements, and acquiring a contrast image F of the tested television viewing system (11) in a dynamic state2And storing the data into a memory;
the seventh step, with F1The image gray matrix is used as a template to traverse the whole dynamic image F in a line-by-line and pixel-by-pixel mode2And calculating a cross-correlation coefficient between the two by:
wherein M and N are each F1Image template in moving image F2Number of rows and columns, F, of middle traversal1(xi，yj) Corresponds to F1In the image template (x)i，yj) Grey value of the position, F2(xi，yj) Corresponds to F2In the image (x)i，yj) The gray value of the location is,
and
are respectively a template F1Image sum F2Average value of pixel gray levels in the image;
eighthly, finding out the maximum value rho in the cross correlation coefficientmaxAnd the corresponding serial number (i ', j'), selecting the image processing area according to the matching unit serial number (i ', j'), and processing the image processing areaTest image F3And storing the gray level of the gray level matrix into a memory, sequencing the gray level values in the gray level matrix, and finding out a maximum value L'maxAnd a minimum value L'minThe minimum resolvable contrast under dynamic conditions is calculated according to the following formula.
And ninthly, changing the brightness of the target light source system (2) and the background light source system (6) within the working range of the observation and aiming system (11) of the detected television, and repeating the third step to the eighth step to obtain a series of MRC values under different scene average brightness.
Advantageous effects
The whole technical effect of the invention is embodied in the following aspects:
the invention adopts a program control type telescopic light source technology, realizes the automatic continuous adjustment of the output light intensity of a light source system by controlling the light cone angle of a light source entering an integrating sphere, and overcomes the defect that the variation range of the target optical contrast cannot be accurately and continuously adjusted by a method of adjusting voltage and an optical device (such as an attenuation sheet).
The invention adopts the discrete collimation system, can match the off-axis parabolic mirrors with different focal lengths according to the focal length of the detected camera, has convenient replacement and wide application range, and overcomes the defects that the integrated collimation lens can not be replaced and has poor matching performance.
The tested television viewing system is placed in the collimation optical system, an infinite low-contrast target can be simulated, and a dynamic simulation platform is combined to generate single-axis rotation or precision vibration, so that various motion states such as uniform motion, motion acceleration motion, simple harmonic motion, vibration and the like are simulated, and the dynamic minimum distinguishable contrast measurement of the television viewing system in a laboratory is realized.
And fourthly, when the dynamic simulation platform is not moved, the measuring device has the measuring function of the static MRC, so that scientific researchers can conveniently compare the measuring results of the dynamic MRC and the static MRC, and the degree of imaging quality reduction caused by motion is quantitatively analyzed.
Drawings
FIG. 1 is a schematic diagram of the dynamic minimum resolvable contrast testing apparatus according to the present invention.
FIG. 2 is a schematic diagram of the target illumination source system of the dynamic minimum resolvable contrast testing apparatus according to the present invention.
FIG. 3 is a schematic diagram of a commonly used USAF1951 test target for the dynamic minimum resolvable contrast test device of the present invention.
Detailed Description
The invention will be further described in detail with reference to the drawings and preferred embodiments.
As shown in fig. 1, the dynamic minimum resolvable contrast testing apparatus in this embodiment includes an object integrating sphere (1), an object light source system (2), an object monitoring illuminometer (3), a target rotating wheel (4), a background integrating sphere (5), a background light source system (6), a background monitoring illuminometer (7), a filter set (8), a plane mirror (9), an off-axis parabolic mirror (10), a dynamic simulation platform (12), and a monitor (13).
The target integrating sphere (1) and the background integrating sphere (5) are key for forming a diffuse reflection light source and are composed of hemispherical shells with white diffuse reflection layers coated on the inner walls, relevant parameters of the integrating sphere in the invention are determined by an illuminance diffusion calculation formula, the diameter of the target integrating sphere is 120mm, the diameter of the background integrating sphere is 500mm, and the effective clear aperture is 50 mm.
The target light source system (2) is composed of a fan (2-1), a reflection condenser (2-2), a light source (2-3), a stepping motor (2-4), a guide rail (2-5) and a telescopic cylinder (2-6). The telescopic cylinder is controlled to move back and forth through the stepping motor, the light ray cone angle of the light source entering the integrating sphere is controlled, and the continuous adjustment of the output illumination of the target integrating sphere (1) is realized; the structure and function of the background light source system (6) are the same as those of the target light source system (2). In this embodiment, the fan (2-1) is generally powered by 12V DC, and the rotation speed is 700 to 1400+ 15% RPM; the surface of the reflecting condenser (2-2) is a paraboloid, and the surface is plated with a high-reflection film; the light source adopts a 100W halogen tungsten lamp, and the spectral range is as follows: 380-; the model of the stepping motor is LMA-TR-200-G10, the stroke is 200mm, and the repeated positioning precision is less than 3 μm.
The target rotating wheel (4) is positioned between the target integrating sphere (1) and the background integrating sphere (5), and enters the background integrating sphere (5) after being illuminated by the target integrating sphere (1) to generate a required contrast target; in the preferred embodiment, the target is a USAF1951 resolution target with 6 groups of target line units, namely, light and dark stripes with equal width and equal spacing are formed on the target surface, each group of target line units is composed of three horizontal target lines and three vertical target lines with equal length, the length of the target line is five times of the width of the target line, the width of the target line is equal to the spacing between adjacent target lines, the spacing between the horizontal target line and the vertical target line is twice of the width of the target line, and from the largest group of target line units, every two groups of target line units with close sizes are arranged according to the same size
The ratio of (a) to (b) is reduced.
The plane reflector (9) and the off-axis parabolic reflector (10) form a collimating optical system, and the filter set (8) is located at the focal position of the off-axis parabolic reflector (10). In the embodiment, the caliber of the off-axis parabolic reflector (10) is 210mm, and the focal length is 2000 mm. The filter set (1-4) consists of two pieces, the first filter is a narrow-band filter, the central wavelength is 546nm, and the half-band width is 10 nm; the second optical filter is a band-pass optical filter, the spectral range is 400 nm-780 nm, and the bandwidth is 380 nm.
The dynamic simulation platform (12) is used for fixing the tested television viewing system (11) and simulating the application state of rotation or vibration of the television viewing system. In the preferred embodiment, a J-21036 vibration table is selected, and the vibration frequency of the vibration table is as follows: 2-100 Hz; vibration amplitude: 0.01-5 degrees; the direction is as follows: the direction of rolling; a target; and (3) motion state: various motion states such as uniform motion, acceleration motion, simple harmonic motion, vibration and the like.
The monitor (13) is connected with the tested television viewing system (11), the tested television viewing system (11) receives the parallel light output by the collimating optical system, the target image is output to the monitor (13), and the minimum distinguishable contrast is distinguished by human eyes or computer software.
The television viewing system dynamic minimum distinguishable contrast testing device realizes MRC measuring method, which is characterized in that: the method comprises the following steps:
firstly, initializing working parameters of a detected television viewing system (11);
secondly, acquiring a background image F of the detected television viewing system (11) according to a keyboard instructionbAnd stored in a memory;
thirdly, setting the brightness of the target light source system (2) to be L according to the keyboard instructiontThe brightness of the background light source system (6) is LbThe system is enabled to work in the working range of the observation and aiming system (11) of the tested television; rotating a target rotating wheel (4), and selecting a proper target to be detected to rotate to a light-passing position;
fourthly, acquiring a contrast image F of the observation and aiming system (11) of the tested television under the static statesRecall background image F from memorybContrast image F in the static statesDeducting background image F according to pixel corresponding modebObtaining the gray value of each pixel point to obtain a test image Fs', while the image is displayed on the monitor (13). When an observer can just distinguish (50% probability) the strip target pattern through the monitor (13), recording the serial numbers (i, j) of the corresponding matching target line units; from the (i, j) read by the viewer, the width of the line is looked up by a look-up table and the corresponding spatial frequency f is calculated from the following equation in pairs per millimeter (lp/mm).
f(lp/mm)＝2i+(j-1)/6(1)
In the formula, i and j are the number of groups and the number of units corresponding to the target, respectively.
Fifthly, selecting a working area for image processing according to the serial number of the matching target line unit selected by the observer, and testing an image F of the working area1And storing the gray matrix in a memory. For gray in gray matrixThe values are sorted to find out the maximum value LmaxAnd a minimum value LminThe spatial frequency f and the average scene brightness L are calculated according to the following formulam＝(Lb+Lt) Minimum resolvable contrast MRC at/2.
Sixthly, setting dynamic parameters of the dynamic simulation platform (13) according to requirements, and acquiring a contrast image F of the tested television viewing system (11) in a dynamic state2And storing the data into a memory;
the seventh step, with F1The image gray matrix is used as a template to traverse the whole dynamic image F in a line-by-line and pixel-by-pixel mode2And calculating a cross-correlation coefficient between the two by:
wherein M and N are each F1Image template in moving image F2Number of rows and columns, F, of middle traversal1(xi，yj) Corresponds to F1In the image template (x)i，yj) Grey value of the position, F2(xi，yj) Corresponds to F2In the image (x)i，yj) The gray value of the location is,
and
are respectively a template F1Image sum F2Average value of pixel gray levels in the image;
eighthly, finding out the maximum value rho in the cross correlation coefficientmaxAnd the serial number (i ', j') of the corresponding matching target line unit, selecting an image processing area according to the serial number (i ', j') of the matching unit, and testing the image F of the processing area3And storing the gray scale of the image data in a memorySorting the gray values in the degree matrix to find out a maximum value L'maxAnd a minimum value L'minThe minimum resolvable contrast under dynamic conditions is calculated according to equation (4).
And ninthly, changing the brightness of the target light source system (2) and the background light source system (6) within the working range of the observation and aiming system (11) of the detected television, and repeating the third step to the eighth step to obtain a series of MRC values under different scene average brightness. And then, the series of MRC values can be used for providing support for the estimation of the range of the television viewing system.
Claims (6)
1. A method for testing the dynamic minimum distinguishable contrast of a television viewing system is characterized in that: the method is realized by a device which comprises a target integrating sphere (1), a target light source system (2), a target monitoring illuminometer (3), a target rotating wheel (4), a background integrating sphere (5), a background light source system (6), a background monitoring illuminometer (7), a filter set (8), a collimating optical system, a dynamic simulation platform (12) and a monitor (13);
the output light intensity of the target integrating sphere (1) is continuously adjustable, and the target monitoring illuminometer (3) is positioned on the side wall of the target integrating sphere (1) and can monitor and feed back the illumination of the target integrating sphere (1) in real time;
the output light intensity of the background integrating sphere (5) is continuously adjustable, and the background monitoring illuminometer (7) is positioned on the side wall of the background integrating sphere (5) and can monitor and feed back the illumination of the background integrating sphere (5) in real time;
the target rotating wheel (4) is positioned between the target integrating sphere (1) and the background integrating sphere (5), and after the target rotating wheel is illuminated by the target integrating sphere (1), a target image enters the background integrating sphere (5) to generate a target with required contrast; the target rotating wheel (4) consists of a plurality of groups of targets which are black and white and alternate, have equal line width, different spatial frequencies and different sizes, and the targets with corresponding frequencies are selected to rotate to the light passing position between the target integrating sphere (1) and the background integrating sphere (5) according to the test requirements;
the outlet position of the background integrating sphere (5) is positioned at the focal plane position of the collimating optical system;
the filter set (8) is positioned at the outlet position of the background integrating sphere (5);
the dynamic simulation platform (12) is used for fixing the tested television viewing system (11) and can simulate the application state of rotation or vibration of the tested television viewing system;
the monitor (13) is connected with the tested television viewing system (11), the tested television viewing system (11) receives the parallel light output by the collimating optical system, a target image is output to the monitor (13), and the minimum distinguishable contrast is distinguished by human eyes or computer software;
the method comprises the following steps:
firstly, initializing working parameters of a detected television viewing system (11);
secondly, acquiring a background image F of the observation and aiming system (11) of the tested television according to the instructionbAnd stored in a memory;
thirdly, setting the brightness of the target light source system (2) to be L according to the instructiontThe brightness of the background light source system (6) is LbEnabling the target light source system (2) and the background light source system (6) to work within the working range of the observation and aiming system (11) of the tested television; rotating a target rotating wheel (4), and selecting a corresponding target to be detected to rotate to a light-passing position;
fourthly, acquiring a contrast image F of the observation and aiming system (11) of the tested television under the static statesRecall background image F from memorybContrast image F in the static statesDeducting background image F according to pixel corresponding modebObtaining the gray value of each pixel point to obtain a test image Fs', while displaying the test image F on the monitor (13)s’；
Resolving the stripe target pattern through a monitor (13), and recording the serial numbers (i, j) of the target line units corresponding to the finest stripe target pattern which can be resolved; looking up the line width of the target line unit with the serial number (i, j), and calculating the corresponding spatial frequency f according to the following formula, wherein the unit is line pair per millimeter:
f(lp/mm)＝2i+(j-1)/6
in the formula, i and j are the number of groups and the number of units corresponding to the target line units respectively;
fifthly, selecting a working area for image processing according to the serial number of the target line unit selected in the fourth step, and testing an image F of the working area1And storing the gray matrix into a memory; the gray values in the gray matrix are sorted, and the maximum value L in the gray matrix is foundmaxAnd a minimum value LminThe spatial frequency f and the average scene brightness L are calculated according to the following formulam＝(Lb+Lt) Minimum resolvable contrast MRC at/2:
sixthly, setting dynamic parameters of the dynamic simulation platform (12) according to requirements, and acquiring a contrast image F of the tested television viewing system (11) under the dynamic condition2And storing the data into a memory;
the seventh step, with F1The image gray matrix is used as a template to traverse the whole dynamic image F in a line-by-line and pixel-by-pixel mode2And calculating a cross-correlation coefficient between the two by:
wherein M and N are each F1Image template in moving image F2Number of rows and columns, F, of middle traversal1(xi,yj) Corresponds to F1In the image template (x)i,yj) Grey value of the position, F2(xi,yj) Corresponds to F2In the image (x)i,yj) The gray value of the location is,
and
are respectively a template F1Image sum F2Average value of pixel gray levels in the image;
eighthly, finding out the maximum value rho in the cross correlation coefficientmaxAnd the corresponding serial number (i ', j'), selecting an image processing area according to the serial number (i ', j') of the matching unit, and processing the test image F of the image processing area3And storing the gray level of the gray level matrix into a memory, sequencing the gray level values in the gray level matrix, and finding out a maximum value L'maxAnd a minimum value L'minThe minimum resolvable contrast MRC' under dynamic conditions is calculated according to the following formula:
and ninthly, changing the brightness of the target light source system (2) and the background light source system (6) within the working range of the observation and aiming system (11) of the detected television, and repeating the third step to the eighth step to obtain a series of MRC values under different scene average brightness.
2. The method of claim 1, wherein the method comprises: the collimation optical system consists of a plane reflector (9) and an off-axis parabolic reflector (10); the outlet position of the background integrating sphere (5) is positioned at the focal plane position of the off-axis parabolic reflector (10).
3. The method according to claim 1 or 2, wherein the method comprises the following steps: the target light source system (2) and the background light source system (6) have the same structure and are composed of a fan, a reflecting condenser, a light source, a stepping motor, a guide rail and a telescopic cylinder; the telescopic cylinder is controlled to move back and forth through the stepping motor, the light cone angle of the light source entering the integrating sphere is controlled, and the continuous adjustment of the output illumination of the integrating sphere is realized.
4. The method of claim 3, wherein the method comprises: the color temperature and the color coordinate of the light source in the target light source system (2) and the background light source system (6) are calibrated and verified, and the output spectral power distribution and the color temperature output stability are ensured through the control of a precise voltage and current stabilizing power supply.
5. The method of claim 1, wherein the method comprises: the tested television observation and aiming system (11) is placed in the collimation light path, and the collimation optical system with the corresponding focal length is matched according to the focal length of the tested television observation and aiming system, so that an observation image with the required multiplying power can be obtained on a monitor.
6. The method of claim 1, wherein the method comprises: the dynamic simulation platform (12) can realize single-axis rotation or precise vibration and simulate the motion states of uniform motion, motion acceleration motion, simple harmonic motion and vibration.
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